Merge pull request 'Updated to 4.4-rc1 & better justfile' (#1) from Sara/godot-module-template:development into development

Reviewed-on: hertog/godot-module-template#1
2025-02-23 18:05:36 +00:00 · 2025-02-23 18:05:36 +00:00 · d08586768d
parent ee00efde1f 4e541b1128
commit d08586768d
5460 changed files with 1128840 additions and 198309 deletions
--- a/engine/.clang-format
+++ b/engine/.clang-format
@ -1,27 +1,52 @@
 # Commented out parameters are those with the same value as base LLVM style.
 # We can uncomment them if we want to change their value, or enforce the
-# chosen value in case the base style changes (last sync: Clang 14.0).
+# chosen value in case the base style changes (last sync: Clang 17.0.6).
---
+BasedOnStyle: LLVM
 ### General config, applies to all languages ###
 BasedOnStyle:  LLVM
 AccessModifierOffset: -4
 AlignAfterOpenBracket: DontAlign
 # AlignArrayOfStructures: None
-# AlignConsecutiveMacros: None
+# AlignConsecutiveAssignments:
-# AlignConsecutiveAssignments: None
+#   Enabled: false
-# AlignConsecutiveBitFields: None
+#   AcrossEmptyLines: false
-# AlignConsecutiveDeclarations: None
+#   AcrossComments: false
 #   AlignCompound: false
 #   PadOperators: true
 # AlignConsecutiveBitFields:
 #   Enabled: false
 #   AcrossEmptyLines: false
 #   AcrossComments: false
 #   AlignCompound: false
 #   PadOperators: false
 # AlignConsecutiveDeclarations:
 #   Enabled: false
 #   AcrossEmptyLines: false
 #   AcrossComments: false
 #   AlignCompound: false
 #   PadOperators: false
 # AlignConsecutiveMacros:
 #   Enabled: false
 #   AcrossEmptyLines: false
 #   AcrossComments: false
 #   AlignCompound: false
 #   PadOperators: false
 # AlignConsecutiveShortCaseStatements:
 #   Enabled: false
 #   AcrossEmptyLines: false
 #   AcrossComments: false
 #   AlignCaseColons: false
 # AlignEscapedNewlines: Right
-AlignOperands:   DontAlign
+AlignOperands: DontAlign
-AlignTrailingComments: false
+AlignTrailingComments:
  Kind: Never
  OverEmptyLines: 0
 # AllowAllArgumentsOnNextLine: true
 AllowAllParametersOfDeclarationOnNextLine: false
 # AllowShortEnumsOnASingleLine: true
 # AllowShortBlocksOnASingleLine: Never
 # AllowShortCaseLabelsOnASingleLine: false
-# AllowShortFunctionsOnASingleLine: All
+# AllowShortEnumsOnASingleLine: true
-# AllowShortLambdasOnASingleLine: All
+AllowShortFunctionsOnASingleLine: Inline
 # AllowShortIfStatementsOnASingleLine: Never
 # AllowShortLambdasOnASingleLine: All
 # AllowShortLoopsOnASingleLine: false
 # AlwaysBreakAfterDefinitionReturnType: None
 # AlwaysBreakAfterReturnType: None
@ -31,50 +56,48 @@ AllowAllParametersOfDeclarationOnNextLine: false
 #   - __capability
 # BinPackArguments: true
 # BinPackParameters: true
 # BitFieldColonSpacing: Both
 # BraceWrapping:
-#   AfterCaseLabel:  false
+#   AfterCaseLabel: false
-#   AfterClass:      false
+#   AfterClass: false
 #   AfterControlStatement: Never
-#   AfterEnum:       false
+#   AfterEnum: false
-#   AfterFunction:   false
+#   AfterFunction: false
-#   AfterNamespace:  false
+#   AfterNamespace: false
 #   AfterObjCDeclaration: false
-#   AfterStruct:     false
+#   AfterStruct: false
-#   AfterUnion:      false
+#   AfterUnion: false
 #   AfterExternBlock: false
-#   BeforeCatch:     false
+#   BeforeCatch: false
-#   BeforeElse:      false
+#   BeforeElse: false
 #   BeforeLambdaBody: false
-#   BeforeWhile:     false
+#   BeforeWhile: false
-#   IndentBraces:    false
+#   IndentBraces: false
 #   SplitEmptyFunction: true
 #   SplitEmptyRecord: true
 #   SplitEmptyNamespace: true
 # BreakAfterAttributes: Never
 # BreakAfterJavaFieldAnnotations: false
 # BreakArrays: true
 # BreakBeforeBinaryOperators: None
 # BreakBeforeConceptDeclarations: true
 # BreakBeforeBraces: Attach
-# BreakBeforeInheritanceComma: false
+# BreakBeforeConceptDeclarations: Always
-# BreakInheritanceList: BeforeColon
+# BreakBeforeInlineASMColon: OnlyMultiline
 # BreakBeforeTernaryOperators: true
 # BreakConstructorInitializersBeforeComma: false
 BreakConstructorInitializers: AfterColon
 # BreakInheritanceList: BeforeColon
 # BreakStringLiterals: true
-ColumnLimit:     0
+ColumnLimit: 0
-# CommentPragmas:  '^ IWYU pragma:'
+# CommentPragmas: "^ IWYU pragma:"
 # QualifierAlignment: Leave
 # CompactNamespaces: false
 ConstructorInitializerIndentWidth: 8
 ContinuationIndentWidth: 8
 Cpp11BracedListStyle: false
 # DeriveLineEnding: true
 # DerivePointerAlignment: false
-# DisableFormat:   false
+# DisableFormat: false
 # EmptyLineAfterAccessModifier: Never
 # EmptyLineBeforeAccessModifier: LogicalBlock
 # ExperimentalAutoDetectBinPacking: false
 # PackConstructorInitializers: BinPack
 ConstructorInitializerAllOnOneLineOrOnePerLine: true
 # AllowAllConstructorInitializersOnNextLine: true
 # FixNamespaceComments: true
 # ForEachMacros:
 #   - foreach
@ -82,34 +105,61 @@ ConstructorInitializerAllOnOneLineOrOnePerLine: true
 #   - BOOST_FOREACH
 # IfMacros:
 #   - KJ_IF_MAYBE
-# IncludeBlocks:   Preserve
+# IncludeBlocks: Preserve
 IncludeCategories:
-  - Regex:           '".*"'
+  - Regex: ^".*"$
-    Priority:        1
+    Priority: 1
-  - Regex:           '^<.*\.h>'
+  - Regex: ^<.*\.h>$
-    Priority:        2
+    Priority: 2
-  - Regex:           '^<.*'
+  - Regex: ^<.*>$
-    Priority:        3
+    Priority: 3
-# IncludeIsMainRegex: '(Test)?$'
+# IncludeIsMainRegex: (Test)?$
-# IncludeIsMainSourceRegex: ''
+# IncludeIsMainSourceRegex: ""
 # IndentAccessModifiers: false
 IndentCaseLabels: true
 # IndentCaseBlocks: false
 IndentCaseLabels: true
 # IndentExternBlock: AfterExternBlock
 # IndentGotoLabels: true
 # IndentPPDirectives: None
-# IndentExternBlock: AfterExternBlock
+# IndentRequiresClause: true
-# IndentRequires:  false
+IndentWidth: 4
 IndentWidth:     4
 # IndentWrappedFunctionNames: false
 InsertBraces: true
 # InsertNewlineAtEOF: false
 # InsertTrailingCommas: None
 # IntegerLiteralSeparator:
 #   Binary: 0
 #   BinaryMinDigits: 0
 #   Decimal: 0
 #   DecimalMinDigits: 0
 #   Hex: 0
 #   HexMinDigits: 0
 JavaImportGroups:
  - org.godotengine
  - android
  - androidx
  - com.android
  - com.google
  - java
  - javax
 # JavaScriptQuotes: Leave
 # JavaScriptWrapImports: true
 # KeepEmptyLinesAtEOF: false
 KeepEmptyLinesAtTheStartOfBlocks: false
 # LambdaBodyIndentation: Signature
-# MacroBlockBegin: ''
+# Language: Cpp
-# MacroBlockEnd:   ''
+# LineEnding: DeriveLF
 # MacroBlockBegin: ""
 # MacroBlockEnd: ""
 # MaxEmptyLinesToKeep: 1
 # NamespaceIndentation: None
 # ObjCBinPackProtocolList: Auto
 ObjCBlockIndentWidth: 4
 # ObjCBreakBeforeNestedBlockParam: true
 # ObjCSpaceAfterProperty: false
 # ObjCSpaceBeforeProtocolList: true
 # PPIndentWidth: -1
 PackConstructorInitializers: NextLine
 # PenaltyBreakAssignment: 2
 # PenaltyBreakBeforeFirstCallParameter: 19
 # PenaltyBreakComment: 300
@ -118,82 +168,71 @@ KeepEmptyLinesAtTheStartOfBlocks: false
 # PenaltyBreakString: 1000
 # PenaltyBreakTemplateDeclaration: 10
 # PenaltyExcessCharacter: 1000000
 # PenaltyReturnTypeOnItsOwnLine: 60
 # PenaltyIndentedWhitespace: 0
 # PenaltyReturnTypeOnItsOwnLine: 60
 # PointerAlignment: Right
-# PPIndentWidth:   -1
+# QualifierAlignment: Leave
 # ReferenceAlignment: Pointer
-# ReflowComments:  true
+# ReflowComments: true
 # RemoveBracesLLVM: false
 # RemoveParentheses: Leave
 RemoveSemicolon: true
 # RequiresClausePosition: OwnLine
 # RequiresExpressionIndentation: OuterScope
 # SeparateDefinitionBlocks: Leave
 # ShortNamespaceLines: 1
-# SortIncludes:    CaseSensitive
+# SortIncludes: CaseSensitive
 # SortJavaStaticImport: Before
-# SortUsingDeclarations: true
+# SortUsingDeclarations: LexicographicNumeric
 # SpaceAfterCStyleCast: false
 # SpaceAfterLogicalNot: false
 # SpaceAfterTemplateKeyword: true
 # SpaceAroundPointerQualifiers: Default
 # SpaceBeforeAssignmentOperators: true
 # SpaceBeforeCaseColon: false
 # SpaceBeforeCpp11BracedList: false
 # SpaceBeforeCtorInitializerColon: true
 # SpaceBeforeInheritanceColon: true
 # SpaceBeforeJsonColon: false
 # SpaceBeforeParens: ControlStatements
 # SpaceBeforeParensOptions:
 #   AfterControlStatements: true
 #   AfterForeachMacros: true
 #   AfterFunctionDefinitionName: false
 #   AfterFunctionDeclarationName: false
-#   AfterIfMacros:   true
+#   AfterFunctionDefinitionName: false
 #   AfterIfMacros: true
 #   AfterOverloadedOperator: false
 #   AfterRequiresInClause: false
 #   AfterRequiresInExpression: false
 #   BeforeNonEmptyParentheses: false
 # SpaceAroundPointerQualifiers: Default
 # SpaceBeforeRangeBasedForLoopColon: true
 # SpaceInEmptyBlock: false
 # SpaceInEmptyParentheses: false
 # SpacesBeforeTrailingComments: 1
 # SpacesInAngles:  Never
 # SpacesInConditionalStatement: false
 # SpacesInContainerLiterals: true
 # SpacesInCStyleCastParentheses: false
 ## Godot TODO: We'll want to use a min of 1, but we need to see how to fix
 ## our comment capitalization at the same time.
 SpacesInLineCommentPrefix:
  Minimum:         0
  Maximum:         -1
 # SpacesInParentheses: false
 # SpacesInSquareBrackets: false
 # SpaceBeforeSquareBrackets: false
-# BitFieldColonSpacing: Both
+# SpaceInEmptyBlock: false
 # SpacesBeforeTrailingComments: 1
 # SpacesInAngles: Never
 # SpacesInContainerLiterals: true
 SpacesInLineCommentPrefix:
  Minimum: 0 # We want a minimum of 1 for comments, but allow 0 for disabled code.
  Maximum: -1
 # SpacesInParens: Never
 # SpacesInParensOptions:
 #   InConditionalStatements: false
 #   InCStyleCasts: false
 #   InEmptyParentheses: false
 #   Other: false
 # SpacesInSquareBrackets: false
 Standard: c++20
 # StatementAttributeLikeMacros:
 #   - Q_EMIT
 # StatementMacros:
 #   - Q_UNUSED
 #   - QT_REQUIRE_VERSION
-TabWidth:        4
+TabWidth: 4
-# UseCRLF:         false
+UseTab: Always
-UseTab:          Always
+# VerilogBreakBetweenInstancePorts: true
 # WhitespaceSensitiveMacros:
 #   - STRINGIZE
 #   - PP_STRINGIZE
 #   - BOOST_PP_STRINGIZE
 #   - NS_SWIFT_NAME
 #   - CF_SWIFT_NAME
---
+#   - NS_SWIFT_NAME
-### C++ specific config ###
+#   - PP_STRINGIZE
-Language:        Cpp
+#   - STRINGIZE
 Standard:        c++17
 ---
 ### ObjC specific config ###
 Language:        ObjC
 # ObjCBinPackProtocolList: Auto
 ObjCBlockIndentWidth: 4
 # ObjCBreakBeforeNestedBlockParam: true
 # ObjCSpaceAfterProperty: false
 # ObjCSpaceBeforeProtocolList: true
 ---
 ### Java specific config ###
 Language:        Java
 # BreakAfterJavaFieldAnnotations: false
 JavaImportGroups: ['org.godotengine', 'android', 'androidx', 'com.android', 'com.google', 'java', 'javax']
 ...
--- a/engine/.clang-tidy
+++ b/engine/.clang-tidy
@ -1,15 +1,13 @@
---
+Checks:
-Checks: >-
+  - -*
-  -*,
+  - cppcoreguidelines-pro-type-member-init
-  cppcoreguidelines-pro-type-member-init,
+  - modernize-redundant-void-arg
-  modernize-redundant-void-arg,
+  - modernize-use-bool-literals
-  modernize-use-bool-literals,
+  - modernize-use-default-member-init
-  modernize-use-default-member-init,
+  - modernize-use-nullptr
-  modernize-use-nullptr,
+  - readability-braces-around-statements
-  readability-braces-around-statements,
+  - readability-redundant-member-init
-  readability-redundant-member-init
+HeaderFileExtensions: ["", h, hh, hpp, hxx, inc, glsl]
 WarningsAsErrors: ''
 HeaderFileExtensions: ['', h, hh, hpp, hxx, inc, glsl]
 ImplementationFileExtensions: [c, cc, cpp, cxx, m, mm, java]
 HeaderFilterRegex: (core|doc|drivers|editor|main|modules|platform|scene|servers|tests)/
 FormatStyle: file
@ -19,4 +17,3 @@ CheckOptions:
  modernize-use-bool-literals.IgnoreMacros: false
  modernize-use-default-member-init.IgnoreMacros: false
  modernize-use-default-member-init.UseAssignment: true
 ...
--- a/engine/.clangd
+++ b/engine/.clangd
@ -0,0 +1,31 @@
 # https://clangd.llvm.org/config
 ---
 # Default conditions, apply everywhere.
 Diagnostics:
  Includes:
    IgnoreHeader:
      - core/typedefs\.h # Our "main" header, featuring transitive includes; allow everywhere.
      - \.compat\.inc
 ---
 # Header-specific conditions.
 If:
  PathMatch: .*\.(h|hh|hpp|hxx|inc)
 # Exclude certain, noisy warnings that lack full context. Replace with lowered severity if/when
 # clangd gets diagnostic severity support. (See: https://github.com/clangd/clangd/issues/1937)
 CompileFlags:
  Add:
    - -Wno-unneeded-internal-declaration
    - -Wno-unused-const-variable
    - -Wno-unused-function
    - -Wno-unused-variable
 ---
 # Suppress all third-party warnings.
 If:
  PathMatch: thirdparty/.*
 Diagnostics:
  Suppress: "*"
--- a/engine/.editorconfig
+++ b/engine/.editorconfig
@ -3,24 +3,18 @@ root = true
 [*]
 charset = utf-8
 end_of_line = lf
 indent_size = 4
 indent_style = tab
 insert_final_newline = true
-
+max_line_length = 120
 [*.{cpp,hpp,c,h,mm}]
 trim_trailing_whitespace = true
 [{*.gradle,AndroidManifest.xml}]
 indent_style = space
 indent_size = 4
 [{*.py,SConstruct,SCsub}]
 indent_style = space
 indent_size = 4
-# YAML requires indentation with spaces instead of tabs.
+[{*.{yml,yaml},.clang{-format,-tidy,d}}]
 [*.{yml,yaml}]
 indent_style = space
 indent_size = 2
 indent_style = space
 [*.svg]
 insert_final_newline = false
--- a/engine/.git-blame-ignore-revs
+++ b/engine/.git-blame-ignore-revs
@ -54,3 +54,15 @@ df61dc4b2bd54a5a40c515493c76f5a458e5b541
 # Enforce template syntax `typename` over `class`
 9903e6779b70fc03aae70a37b9cf053f4f355b91
 # Style: Apply new `clang-format` fixes
 b37fc1014abf7adda70dc30b0822d775b3a4433f
 # Set clang-format `RemoveSemicolon` rule to `true`
 0d350e71086fffce0553811739aae9f6ad66136c
 # Style: Apply clang-tidy fixes (superficial)
 bb5f390fb9b466be35a5df7651323d7e66afca31
 # Style: Enforce `AllowShortFunctionsOnASingleLine`
 e06d83860d798b6766b23d6eae48557387a7db85
--- a/engine/.gitattributes
+++ b/engine/.gitattributes
@ -1,6 +1,6 @@
 # Properly detect languages on Github
-*.h linguist-language=cpp
+*.h linguist-language=C++
-*.inc linguist-language=cpp
+*.inc linguist-language=C++
 thirdparty/* linguist-vendored
 # Normalize EOL for all files that Git considers text files
--- a/engine/.gitignore
+++ b/engine/.gitignore
@ -36,8 +36,8 @@ compile_commands.json
 platform/windows/godot_res.res
 # Ninja build files
-build.ninja
+*.ninja
-.ninja
+.ninja/
 run_ninja_env.bat
 # Generated by Godot binary
@ -77,6 +77,9 @@ venv
 __pycache__/
 *.pyc
 # Python modules
 .*_cache/
 # Documentation
 doc/_build/
@ -164,9 +167,6 @@ gmon.out
 # Kdevelop
 *.kdev4
 # Mypy
 .mypy_cache
 # Qt Creator
 *.config
 *.creator
@ -216,6 +216,7 @@ xcuserdata/
 *.xcscmblueprint
 *.xccheckout
 *.xcodeproj/*
 !misc/misc/dist/ios_xcode/godot_ios.xcodeproj/project.pbxproj
 ##############################
 ### Visual Studio specific ###
@ -362,6 +363,7 @@ cpp.hint
 # macOS
 .DS_Store
 __MACOSX
 Godot.app
 # Windows
 # https://github.com/github/gitignore/blob/main/Global/Windows.gitignore
--- a/engine/.mailmap
+++ b/engine/.mailmap
@ -84,6 +84,7 @@ Jean-Michel Bernard <jmb462@gmail.com>
 Jérôme Gully <jerome.gully0@gmail.com>
 JFonS <joan.fonssanchez@gmail.com>
 jitspoe <jitspoe@yahoo.com> <jitspoeAyahoooDcom>
 Johan Aires Rastén <johan@oljud.se>
 Juan Linietsky <reduzio@gmail.com>
 Juan Linietsky <reduzio@gmail.com> <juan@godotengine.org>
 Juan Linietsky <reduzio@gmail.com> <juan@okamstudio.com>
@ -97,6 +98,7 @@ karroffel <therzog@mail.de> <thomas.herzog@simedis.com>
 Kelly Thomas <kelly.thomas@hotmail.com.au>
 Kongfa Waroros <gongpha@hotmail.com>
 K. S. Ernest (iFire) Lee <ernest.lee@chibifire.com>
 K. S. Ernest (iFire) Lee <ernest.lee@chibifire.com> <fire@users.noreply.github.com>
 kleonc <9283098+kleonc@users.noreply.github.com> <kleonc@users.noreply.github.com>
 Leon Krause <lk@leonkrause.com> <eska@eska.me>
 Leon Krause <lk@leonkrause.com> <eska014@users.noreply.github.com>
@ -142,6 +144,7 @@ Pieter-Jan Briers <pieterjan.briers+git@gmail.com>
 Pieter-Jan Briers <pieterjan.briers+git@gmail.com> <pieterjan.briers@gmail.com>
 Poommetee Ketson <poommetee@protonmail.com>
 Przemysław Gołąb (n-pigeon) <golab.przemyslaw@gmail.com>
 Radiant <69520693+RadiantUwU@users.noreply.github.com> <i.like.using.discord@gmail.com>
 Rafał Mikrut <mikrutrafal@protonmail.com>
 Rafał Mikrut <mikrutrafal@protonmail.com> <mikrutrafal54@gmail.com>
 Ralf Hölzemer <r.hoelzemer@posteo.de> <rollenrolm@posteo.de>
--- a/engine/.pre-commit-config.yaml
+++ b/engine/.pre-commit-config.yaml
@ -4,21 +4,25 @@ default_language_version:
 exclude: |
  (?x)^(
    .*thirdparty/.*|
-    .*-so_wrap\.(h|c)$
+    .*-so_wrap\.(h|c)|
-  )
+    platform/android/java/editor/src/main/java/com/android/.*|
    platform/android/java/lib/src/com/google/.*
  )$
 repos:
  - repo: https://github.com/pre-commit/mirrors-clang-format
-    rev: v17.0.6
+    rev: v19.1.3
    hooks:
      - id: clang-format
-        files: \.(c|h|cpp|hpp|cc|hh|cxx|hxx|m|mm|inc|java|glsl)$
+        files: \.(c|h|cpp|hpp|cc|hh|cxx|hxx|m|mm|inc|java)$
        types_or: [text]
-        exclude: |
+        exclude: ^tests/python_build/.*
-          (?x)^(
+      - id: clang-format
-            tests/python_build/.*|
+        name: clang-format-glsl
-            platform/android/java/lib/src/com/.*
+        files: \.glsl$
-          )
+        types_or: [text]
        exclude: ^tests/python_build/.*
        args: [-style=file:misc/utility/clang_format_glsl.yml]
  - repo: https://github.com/pocc/pre-commit-hooks
    rev: v1.3.5
@ -27,24 +31,24 @@ repos:
        files: \.(c|h|cpp|hpp|cc|hh|cxx|hxx|m|mm|inc|java|glsl)$
        args: [--fix, --quiet, --use-color]
        types_or: [text]
-        exclude: |
+        exclude: ^tests/python_build/.*
-          (?x)^(
+        additional_dependencies: [clang-tidy==19.1.0]
            tests/python_build/.*|
            platform/android/java/lib/src/com/.*
          )
        additional_dependencies: [clang-tidy==18.1.1]
        require_serial: true
        stages: [manual] # Not automatically triggered, invoked via `pre-commit run --hook-stage manual clang-tidy`
  - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: v0.4.4
+    rev: v0.9.4
    hooks:
      - id: ruff
        args: [--fix]
        files: (\.py|SConstruct|SCsub)$
        types_or: [text]
      - id: ruff-format
        files: (\.py|SConstruct|SCsub)$
        types_or: [text]
  - repo: https://github.com/pre-commit/mirrors-mypy
-    rev: v0.971
+    rev: v1.14.1
    hooks:
      - id: mypy
        files: \.py$
@ -80,7 +84,7 @@ repos:
        name: doc-status
        language: python
        entry: python doc/tools/doc_status.py
-        args: [doc/classes, modules/*/doc_classes, platform/*/doc_classes]
+        args: [doc/classes, modules/*/doc_classes, platform/*/doc_classes, -c]
        pass_filenames: false
        files: ^(doc/classes|.*/doc_classes)/.*\.xml$
@ -89,16 +93,21 @@ repos:
        language: node
        entry: eslint
        files: ^(platform/web/js/|modules/|misc/dist/html/).*\.(js|html)$
-        args: [--fix, --no-warn-ignored, --no-config-lookup, --config, platform/web/eslint.config.cjs]
+        args:
          - --fix
          - --no-warn-ignored
          - --no-config-lookup
          - --config
          - platform/web/eslint.config.cjs
        additional_dependencies:
-          - '@eslint/js@^9.3.0'
+          - "@eslint/js@^9.3.0"
-          - '@html-eslint/eslint-plugin@^0.24.1'
+          - "@html-eslint/eslint-plugin@^0.24.1"
-          - '@html-eslint/parser@^0.24.1'
+          - "@html-eslint/parser@^0.24.1"
-          - '@stylistic/eslint-plugin@^2.1.0'
+          - "@stylistic/eslint-plugin@^2.1.0"
-          - 'eslint@^9.3.0'
+          - eslint@^9.3.0
-          - 'eslint-plugin-html@^8.1.1'
+          - eslint-plugin-html@^8.1.1
-          - 'globals@^15.3.0'
+          - globals@^15.3.0
-          - 'espree@^10.0.1'
+          - espree@^10.0.1
      - id: jsdoc
        name: jsdoc
@ -112,11 +121,11 @@ repos:
          - platform/web/js/engine/config.js
          - platform/web/js/engine/features.js
          - --destination
-          - ''
+          - ""
          - -d
          - dry-run
        pass_filenames: false
-        additional_dependencies: ['jsdoc@^4.0.3']
+        additional_dependencies: [jsdoc@^4.0.3]
      - id: svgo
        name: svgo
@ -124,7 +133,7 @@ repos:
        entry: svgo
        files: \.svg$
        args: [--quiet, --config, misc/utility/svgo.config.mjs]
-        additional_dependencies: ["svgo@3.3.2"]
+        additional_dependencies: [svgo@3.3.2]
      - id: copyright-headers
        name: copyright-headers
@ -133,20 +142,19 @@ repos:
        files: \.(c|h|cpp|hpp|cc|hh|cxx|hxx|m|mm|inc|java)$
        exclude: |
          (?x)^(
-            core/math/bvh_.*\.inc$|
+            core/math/bvh_.*\.inc|
            platform/(?!android|ios|linuxbsd|macos|web|windows)\w+/.*|
-            platform/android/java/lib/src/com/.*|
+            platform/android/java/lib/src/org/godotengine/godot/gl/GLSurfaceView\.java|
-            platform/android/java/lib/src/org/godotengine/godot/gl/GLSurfaceView\.java$|
+            platform/android/java/lib/src/org/godotengine/godot/gl/EGLLogWrapper\.java|
-            platform/android/java/lib/src/org/godotengine/godot/gl/EGLLogWrapper\.java$|
+            platform/android/java/lib/src/org/godotengine/godot/utils/ProcessPhoenix\.java
-            platform/android/java/lib/src/org/godotengine/godot/utils/ProcessPhoenix\.java$
+          )$
          )
      - id: header-guards
        name: header-guards
        language: python
        entry: python misc/scripts/header_guards.py
        files: \.(h|hpp|hh|hxx)$
-        exclude: ^.*/(thread|platform_config|platform_gl)\.h$
+        exclude: ^.*/(dummy|thread|platform_config|platform_gl)\.h$
      - id: file-format
        name: file-format
@ -155,22 +163,22 @@ repos:
        types_or: [text]
        exclude: |
          (?x)^(
-            .*\.test\.txt$|
+            .*\.test\.txt|
-            .*\.svg$|
+            .*\.svg|
-            .*\.patch$|
+            .*\.patch|
-            .*\.out$|
+            .*\.out|
-            modules/gdscript/tests/scripts/parser/features/mixed_indentation_on_blank_lines\.gd$|
+            modules/gdscript/tests/scripts/parser/features/mixed_indentation_on_blank_lines\.gd|
-            modules/gdscript/tests/scripts/parser/warnings/empty_file_newline_comment\.notest\.gd$|
+            modules/gdscript/tests/scripts/parser/warnings/empty_file_newline_comment\.norun\.gd|
-            modules/gdscript/tests/scripts/parser/warnings/empty_file_newline\.notest\.gd$|
+            modules/gdscript/tests/scripts/parser/warnings/empty_file_newline\.norun\.gd|
-            platform/android/java/lib/src/com/google/.*
+            tests/data/.*\.bin
-          )
+          )$
      - id: dotnet-format
        name: dotnet-format
        language: python
        entry: python misc/scripts/dotnet_format.py
        types_or: [c#]
-
+#
 # End of upstream Godot pre-commit hooks.
 #
 # Keep this separation to let downstream forks add their own hooks to this file,
--- a/engine/AUTHORS.md
+++ b/engine/AUTHORS.md
@ -1,11 +1,17 @@
 # Godot Engine authors
 Godot Engine is developed by a community of voluntary contributors who
-contribute code, bug reports, documentation, artwork, support, etc.
+contribute code, bug reports, documentation, translations, support, etc.,
 across multiple repositories.
 It is impossible to list them all; nevertheless, this file aims at listing
-the developers who contributed significant patches to this MIT licensed
+the developers who contributed significant improvements to the engine code.
-source code. "Significant" is arbitrarily decided, but should be fair :)
+
 To keep the list curated, we use a threshold of a minimum of 11 commits.
 This file does not strictly reflect copyright ownership for the engine
 source code. For this, refer to the Git history to know which contributor
 wrote which part of the codebase.
 GitHub usernames are indicated in parentheses, or as sole entry when no other
 name is available.
@ -25,8 +31,6 @@ name is available.
 ## Developers
 (in alphabetical order, with over 10 commits excluding merges)
    Aaron Franke (aaronfranke)
    Aaron Pagano (aaronp64)
    Aaron Record (LightningAA)
@ -38,6 +42,7 @@ name is available.
    Alfred Reinold Baudisch (alfredbaudisch)
    Alistair Leslie-Hughes (alesliehughes)
    Alket Rexhepi (alketii)
    Alvin Wong (alvinhochun)
    Andrea Catania (AndreaCatania)
    Andreia Gaita (shana)
    Andrii Doroshenko (Xrayez)
@ -46,11 +51,13 @@ name is available.
    Angad Kambli (angad-k)
    Anilforextra (AnilBK)
    Anish Bhobe (KidRigger)
    Anni Ryynänen (anniryynanen)
    Anton Yabchinskiy (a12n)
    Anutrix
    Aren Villanueva (kurikaesu)
    Ariel Manzur (punto-)
    Arman Elgudzhyan (puchik)
    Arseny Kapoulkine (zeux)
    AThousandShips
    aXu-AP
    Bartłomiej T. Listwon (Listwon)
@ -72,6 +79,7 @@ name is available.
    Carter Anderson (cart)
    ChibiDenDen
    Chris Bradfield (cbscribe)
    Chris Cranford (Naros)
    Christian Kaiser (ckaiser)
    Clay John (clayjohn)
    ConteZero
@ -86,7 +94,9 @@ name is available.
    David Cambré (Gallilus)
    David Sichma (DavidSichma)
    David Snopek (dsnopek)
    derammo
    Dharkael (lupoDharkael)
    Dirk Steinmetz (rsjtdrjgfuzkfg)
    Dmitry Koteroff (Krakean)
    Dmitry Maganov (vonagam)
    Dominik Jasiński (dreamsComeTrue)
@ -117,6 +127,7 @@ name is available.
    Geequlim
    George Marques (vnen)
    Gerrit Großkopf (Grosskopf)
    Giganzo
    Gilles Roudiere (groud)
    Gordon MacPherson (RevoluPowered)
    Guilherme Felipe de C. G. da Silva (guilhermefelipecgs)
@ -126,7 +137,6 @@ name is available.
    Hein-Pieter van Braam-Stewart (hpvb)
    Hendrik Brucker (Geometror)
    Hilderin
    hilfazer
    Hiroshi Ogawa (hi-ogawa)
    HolonProduction
    homer666
@ -151,6 +161,7 @@ name is available.
    Jia Jun Chai (SkyLucilfer)
    jitspoe
    Joan Fons Sanchez (JFonS)
    Johan Aires Rastén (JohanAR)
    Johan Manuel (29jm)
    Johannes Witt (HaSa1002)
    Jonathan Nicholl (jtnicholl)
@ -163,11 +174,13 @@ name is available.
    Jummit
    Justo Delgado (mrcdk)
    karroffel
    Kassandra Pucher (PucklaJ)
    Kelly Thomas (KellyThomas)
    kleonc
    Kongfa Waroros (gongpha)
    Kostadin Damyanov (Max-Might)
    K. S. Ernest (iFire) Lee (fire)
    Kyle Eichlin (likeich)
    lawnjelly
    Leon Krause (leonkrause)
    Liz Haas (27thLiz)
@ -185,6 +198,7 @@ name is available.
    Marcus Brummer (mbrlabs)
    Marcus Elg (MCrafterzz)
    Mariano Javier Suligoy (MarianoGnu)
    Mario Liebisch (MarioLiebisch)
    Mario Schlack (hurikhan)
    Marios Staikopoulos (marstaik)
    Marius Hanl (Maran23)
@ -198,6 +212,7 @@ name is available.
    Masoud BH (masoudbh3)
    Mateo Kuruk Miccino (kuruk-mm)
    Matias N. Goldberg (darksylinc)
    Matthew Murphy (mashumafi)
    Matthew (skyace65)
    Matthias Hölzl (hoelzl)
    Max Hilbrunner (mhilbrunner)
@ -209,9 +224,10 @@ name is available.
    MichiRecRoom (LikeLakers2)
    Micky (Mickeon)
    Mikael Hermansson (mihe)
    Mika Viskari (miv391)
    MinusKube
    MJacred
-    Morris "Tabor" Arroad (mortarroad)
+    Mounir Tohami (WhalesState)
    mrezai
    Muhammad Huri (CakHuri)
    muiroc
@ -234,6 +250,7 @@ name is available.
    Patrick Dawson (pkdawson)
    Patrick Exner (FlameLizard)
    Patrick (firefly2442)
    patwork
    Paul Batty (Paulb23)
    Paul Joannon (paulloz)
    Paul Trojahn (ptrojahn)
@ -245,6 +262,7 @@ name is available.
    Pieter-Jan Briers (PJB3005)
    Poommetee Ketson (Noshyaar)
    Przemysław Gołąb (n-pigeon)
    Radiant (RadiantUwU)
    Rafael M. G. (rafallus)
    Rafał Mikrut (qarmin)
    Raffaele Picca (RPicster)
@ -282,6 +300,7 @@ name is available.
    Stanislav Labzyuk (DarkMessiah)
    Stijn Hinlopen (hinlopen)
    stmSi
    Stuart Carnie (stuartcarnie)
    Swarnim Arun (minraws)
    TC (floppyhammer)
    TechnoPorg
@ -289,6 +308,7 @@ name is available.
    Thakee Nathees (ThakeeNathees)
    thebestnom
    Theo Hallenius (TheoXD)
    Thomas ten Cate (ttencate)
    Timo Schwarzer (timoschwarzer)
    Timothé Bonhoure (ajreckof)
    Timo (toger5)
--- a/engine/COPYRIGHT.txt
+++ b/engine/COPYRIGHT.txt
@ -1,42 +1,40 @@
 # Exhaustive licensing information for files in the Godot Engine repository
 # =========================================================================
 #
 # This file aims at documenting the copyright and license for every source
 # file in the Godot Engine repository, and especially outline the files
 # whose license differs from the MIT/Expat license used by Godot Engine.
 #
 # It is written as a machine-readable format following the debian/copyright
 # specification. Globbing patterns (e.g. "Files: *") mean that they affect
 # all corresponding files (also recursively in subfolders), apart from those
 # with a more explicit copyright statement.
 #
 # Licenses are given with their debian/copyright short name (or SPDX identifier
 # if no standard short name exists) and are all included in plain text at the
 # end of this file (in alphabetical order).
 #
 # Disclaimer for thirdparty libraries:
 # ------------------------------------
 #
 # Licensing details for thirdparty libraries in the 'thirdparty/' directory
 # are given in summarized form, i.e. with only the "main" license described
 # in the library's license statement. Different licenses of single files or
 # code snippets in thirdparty libraries are not documented here.
 # For example:
 #   Files: ./thirdparty/zlib/
 #   Copyright: 1995-2017, Jean-loup Gailly and Mark Adler
 #   License: Zlib
 # The exact copyright for each file in that library *may* differ, and some
 # files or code snippets might be distributed under other compatible licenses
 # (e.g. a public domain dedication), but as far as Godot Engine is concerned
 # the library is considered as a whole under the Zlib license.
 #
 # Note: When linking dynamically against thirdparty libraries instead of
 # building them into the Godot binary, you may remove the corresponding
 # license details from this file.
 -----------------------------------------------------------------------
 Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
 Comment:
 Exhaustive licensing information for files in the Godot Engine repository
 =========================================================================
 .
 This file aims at documenting the copyright and license for every source
 file in the Godot Engine repository, and especially outline the files
 whose license differs from the MIT/Expat license used by Godot Engine.
 .
 It is written as a machine-readable format following the debian/copyright
 specification. Globbing patterns (e.g. "Files: *") mean that they affect
 all corresponding files (also recursively in subfolders), apart from those
 with a more explicit copyright statement.
 .
 Licenses are given with their debian/copyright short name (or SPDX identifier
 if no standard short name exists) and are all included in plain text at the
 end of this file (in alphabetical order).
 .
 Disclaimer for thirdparty libraries:
 ------------------------------------
 .
 Licensing details for thirdparty libraries in the 'thirdparty/' directory
 are given in summarized form, i.e. with only the "main" license described
 in the library's license statement. Different licenses of single files or
 code snippets in thirdparty libraries are not documented here.
 For example:
   Files: thirdparty/zlib/*
   Copyright: 1995-2017, Jean-loup Gailly and Mark Adler
   License: Zlib
 The exact copyright for each file in that library *may* differ, and some
 files or code snippets might be distributed under other compatible licenses
 (e.g. a public domain dedication), but as far as Godot Engine is concerned
 the library is considered as a whole under the Zlib license.
 .
 Note: When linking dynamically against thirdparty libraries instead of
 building them into the Godot binary, you may remove the corresponding
 license details from this file.
 Upstream-Name: Godot Engine
 Upstream-Contact: Rémi Verschelde <contact@godotengine.org>
 Source: https://github.com/godotengine/godot
@ -47,222 +45,244 @@ Copyright: 2014-present, Godot Engine contributors
 2007-2014, Juan Linietsky, Ariel Manzur
 License: Expat
-Files: ./icon.png
+Files: icon.png
- ./icon.svg
+ icon.svg
- ./logo.png
+ logo.png
- ./logo.svg
+ logo.svg
 Comment: Godot Engine logo
 Copyright: 2017, Andrea Calabró
 License: CC-BY-4.0
-Files: ./core/math/convex_hull.cpp
+Files: core/math/convex_hull.cpp
- ./core/math/convex_hull.h
+ core/math/convex_hull.h
 Comment: Bullet Continuous Collision Detection and Physics Library
 Copyright: 2011, Ole Kniemeyer, MAXON, www.maxon.net
 2014-present, Godot Engine contributors
 2007-2014, Juan Linietsky, Ariel Manzur
 License: Expat and Zlib
-Files: ./modules/lightmapper_rd/lm_compute.glsl
+Files: modules/betsy/alpha_stitch.glsl
-Comment: Joint Non-Local Means (JNLM) denoiser
+ modules/betsy/bc1.glsl
-Copyright: 2020, Manuel Prandini
+ modules/betsy/bc4.glsl
- 2014-present, Godot Engine contributors
+ modules/betsy/bc6h.glsl
- 2007-2014, Juan Linietsky, Ariel Manzur
+ modules/betsy/CrossPlatformSettings_piece_all.glsl
 Comment: Betsy
 Copyright: 2020-2022, Matias N. Goldberg
 License: Expat
-Files: ./platform/android/java/lib/aidl/com/android/*
+Files: modules/godot_physics_2d/godot_joints_2d.cpp
 ./platform/android/java/lib/res/layout/status_bar_ongoing_event_progress_bar.xml
 ./platform/android/java/lib/src/com/google/android/*
 ./platform/android/java/lib/src/org/godotengine/godot/input/InputManagerCompat.java
 ./platform/android/java/lib/src/org/godotengine/godot/input/InputManagerV16.java
 Comment: The Android Open Source Project
 Copyright: 2008-2016, The Android Open Source Project
 2002, Google, Inc.
 License: Apache-2.0
 Files: ./platform/android/java/lib/src/org/godotengine/godot/utils/ProcessPhoenix.java
 Comment: ProcessPhoenix
 Copyright: 2015, Jake Wharton
 License: Apache-2.0
 Files: ./scene/animation/easing_equations.h
 Comment: Robert Penner's Easing Functions
 Copyright: 2001, Robert Penner
 2014-present, Godot Engine contributors
 2007-2014, Juan Linietsky, Ariel Manzur
 License: Expat
 Files: ./servers/physics_2d/godot_joints_2d.cpp
 Comment: Chipmunk2D Joint Constraints
 Copyright: 2007, Scott Lembcke
 License: Expat
-Files: ./servers/physics_3d/collision_solver_3d_sat.cpp
+Files: modules/godot_physics_3d/gjk_epa.cpp
-Comment: Open Dynamics Engine
+ modules/godot_physics_3d/joints/godot_generic_6dof_joint_3d.cpp
-Copyright: 2001-2003, Russell L. Smith, Alen Ladavac, Nguyen Binh
+ modules/godot_physics_3d/joints/godot_generic_6dof_joint_3d.h
-License: BSD-3-clause
+ modules/godot_physics_3d/joints/godot_hinge_joint_3d.cpp
-
+ modules/godot_physics_3d/joints/godot_hinge_joint_3d_sw.h
-Files: ./servers/physics_3d/gjk_epa.cpp
+ modules/godot_physics_3d/joints/godot_jacobian_entry_3d_sw.h
- ./servers/physics_3d/joints/generic_6dof_joint_3d_sw.cpp
+ modules/godot_physics_3d/joints/godot_pin_joint_3d.cpp
- ./servers/physics_3d/joints/generic_6dof_joint_3d_sw.h
+ modules/godot_physics_3d/joints/godot_pin_joint_3d.h
- ./servers/physics_3d/joints/hinge_joint_3d_sw.cpp
+ modules/godot_physics_3d/joints/godot_slider_joint_3d.cpp
- ./servers/physics_3d/joints/hinge_joint_3d_sw.h
+ modules/godot_physics_3d/joints/godot_slider_joint_3d.h
- ./servers/physics_3d/joints/jacobian_entry_3d_sw.h
+ modules/godot_physics_3d/godot_soft_body_3d.cpp
- ./servers/physics_3d/joints/pin_joint_3d_sw.cpp
+ modules/godot_physics_3d/godot_soft_body_3d.h
- ./servers/physics_3d/joints/pin_joint_3d_sw.h
+ modules/godot_physics_3d/godot_shape_3d.cpp
- ./servers/physics_3d/joints/slider_joint_3d_sw.cpp
+ modules/godot_physics_3d/godot_shape_3d.h
 ./servers/physics_3d/joints/slider_joint_3d_sw.h
 ./servers/physics_3d/soft_body_3d_sw.cpp
 ./servers/physics_3d/soft_body_3d_sw.h
 ./servers/physics_3d/shape_3d_sw.cpp
 ./servers/physics_3d/shape_3d_sw.h
 Comment: Bullet Continuous Collision Detection and Physics Library
 Copyright: 2003-2008, Erwin Coumans
 2014-present, Godot Engine contributors
 2007-2014, Juan Linietsky, Ariel Manzur
 License: Expat and Zlib
-Files: ./servers/physics_3d/joints/cone_twist_joint_3d_sw.cpp
+Files: modules/godot_physics_3d/godot_collision_solver_3d_sat.cpp
- ./servers/physics_3d/joints/cone_twist_joint_3d_sw.h
+Comment: Open Dynamics Engine
 Copyright: 2001-2003, Russell L. Smith, Alen Ladavac, Nguyen Binh
 License: BSD-3-clause
 Files: modules/godot_physics_3d/joints/godot_cone_twist_joint_3d.cpp
 modules/godot_physics_3d/joints/godot_cone_twist_joint_3d.h
 Comment: Bullet Continuous Collision Detection and Physics Library
 Copyright: 2007, Starbreeze Studios
 2014-present, Godot Engine contributors
 2007-2014, Juan Linietsky, Ariel Manzur
 License: Expat and Zlib
-Files: ./servers/rendering/renderer_rd/shaders/ss_effects_downsample.glsl
+Files: modules/jolt_physics/spaces/jolt_temp_allocator.cpp
- ./servers/rendering/renderer_rd/shaders/ssao_blur.glsl
+Comment: Jolt Physics
- ./servers/rendering/renderer_rd/shaders/ssao_importance_map.glsl
+Copyright: 2021, Jorrit Rouwe
- ./servers/rendering/renderer_rd/shaders/ssao_interleave.glsl
+ 2014-present, Godot Engine contributors
- ./servers/rendering/renderer_rd/shaders/ssao.glsl
+ 2007-2014, Juan Linietsky, Ariel Manzur
- ./servers/rendering/renderer_rd/shaders/ssil_blur.glsl
+License: Expat
- ./servers/rendering/renderer_rd/shaders/ssil_importance_map.glsl
+
- ./servers/rendering/renderer_rd/shaders/ssil_interleave.glsl
+Files: modules/lightmapper_rd/lm_compute.glsl
- ./servers/rendering/renderer_rd/shaders/ssil.glsl
+Comment: Joint Non-Local Means (JNLM) denoiser
 Copyright: 2020, Manuel Prandini
 2014-present, Godot Engine contributors
 2007-2014, Juan Linietsky, Ariel Manzur
 License: Expat
 Files: platform/android/java/editor/src/main/java/com/android/*
 platform/android/java/lib/aidl/com/android/*
 platform/android/java/lib/res/layout/status_bar_ongoing_event_progress_bar.xml
 platform/android/java/lib/src/com/google/android/*
 platform/android/java/lib/src/org/godotengine/godot/input/InputManagerCompat.java
 platform/android/java/lib/src/org/godotengine/godot/input/InputManagerV16.java
 Comment: The Android Open Source Project
 Copyright: 2008-2016, The Android Open Source Project
 2002, Google, Inc.
 License: Apache-2.0
 Files: platform/android/java/lib/src/org/godotengine/godot/utils/ProcessPhoenix.java
 Comment: ProcessPhoenix
 Copyright: 2015, Jake Wharton
 License: Apache-2.0
 Files: scene/animation/easing_equations.h
 Comment: Robert Penner's Easing Functions
 Copyright: 2001, Robert Penner
 2014-present, Godot Engine contributors
 2007-2014, Juan Linietsky, Ariel Manzur
 License: Expat
 Files: servers/rendering/renderer_rd/shaders/ss_effects_downsample.glsl
 servers/rendering/renderer_rd/shaders/ssao_blur.glsl
 servers/rendering/renderer_rd/shaders/ssao_importance_map.glsl
 servers/rendering/renderer_rd/shaders/ssao_interleave.glsl
 servers/rendering/renderer_rd/shaders/ssao.glsl
 servers/rendering/renderer_rd/shaders/ssil_blur.glsl
 servers/rendering/renderer_rd/shaders/ssil_importance_map.glsl
 servers/rendering/renderer_rd/shaders/ssil_interleave.glsl
 servers/rendering/renderer_rd/shaders/ssil.glsl
 Comment: Intel ASSAO and related files
 Copyright: 2016, Intel Corporation
 License: Expat
-Files: ./servers/rendering/renderer_rd/shaders/taa_resolve.glsl
+Files: servers/rendering/renderer_rd/shaders/effects/taa_resolve.glsl
 Comment: Temporal Anti-Aliasing resolve implementation
 Copyright: 2016, Panos Karabelas
 License: Expat
-Files: ./thirdparty/amd-fsr/
+Files: thirdparty/amd-fsr/*
 Comment: AMD FidelityFX Super Resolution
 Copyright: 2021, Advanced Micro Devices, Inc.
 License: Expat
-Files: ./thirdparty/amd-fsr2/
+Files: thirdparty/amd-fsr2/*
 Comment: AMD FidelityFX Super Resolution 2
 Copyright: 2022-2023, Advanced Micro Devices, Inc.
 License: Expat
-Files: ./thirdparty/angle/
+Files: thirdparty/angle/*
 Comment: ANGLE
 Copyright: 2018, The ANGLE Project Authors.
 License: BSD-3-clause
-Files: ./thirdparty/astcenc/
+Files: thirdparty/astcenc/*
 Comment: Arm ASTC Encoder
 Copyright: 2011-2024, Arm Limited
 License: Apache-2.0
-Files: ./thirdparty/basis_universal/
+Files: thirdparty/basis_universal/*
 Comment: Basis Universal
-Copyright: 2022, Binomial LLC.
+Copyright: 2019-2024, Binomial LLC.
 License: Apache-2.0
-Files: ./thirdparty/brotli/
+Files: thirdparty/brotli/*
 Comment: Brotli
 Copyright: 2009, 2010, 2013-2016 by the Brotli Authors.
 License: Expat
-Files: ./thirdparty/certs/ca-certificates.crt
+Files: thirdparty/certs/ca-certificates.crt
 Comment: CA certificates
 Copyright: Mozilla Contributors
 License: MPL-2.0
-Files: ./thirdparty/clipper2/
+Files: thirdparty/clipper2/*
 Comment: Clipper2
-Copyright: 2010-2023, Angus Johnson
+Copyright: 2010-2024, Angus Johnson
 License: BSL-1.0
-Files: ./thirdparty/cvtt/
+Files: thirdparty/cvtt/*
 Comment: Convection Texture Tools Stand-Alone Kernels
 Copyright: 2018, Eric Lasota
 2018, Microsoft Corp.
 License: Expat
-Files: ./thirdparty/d3d12ma/
+Files: thirdparty/d3d12ma/*
 Comment: D3D12 Memory Allocator
 Copyright: 2019-2022 Advanced Micro Devices, Inc.
 License: Expat
-Files: ./thirdparty/directx_headers/
+Files: thirdparty/directx_headers/*
 Comment: DirectX Headers
 Copyright: Microsoft Corporation
 License: Expat
-Files: ./thirdparty/doctest/
+Files: thirdparty/doctest/*
 Comment: doctest
 Copyright: 2016-2023, Viktor Kirilov
 License: Expat
-Files: ./thirdparty/embree/
+Files: thirdparty/embree/*
 Comment: Embree
 Copyright: 2009-2021 Intel Corporation
 License: Apache-2.0
-Files: ./thirdparty/enet/
+Files: thirdparty/enet/*
 Comment: ENet
 Copyright: 2002-2024, Lee Salzman
 License: Expat
-Files: ./thirdparty/etcpak/
+Files: thirdparty/etcpak/*
 Comment: etcpak
 Copyright: 2013-2022, Bartosz Taudul
 License: BSD-3-clause
-Files: ./thirdparty/fonts/DroidSans*.woff2
+Files: thirdparty/fonts/DroidSans*.woff2
 Comment: DroidSans font
 Copyright: 2008, The Android Open Source Project
 License: Apache-2.0
-Files: ./thirdparty/fonts/JetBrainsMono_Regular.woff2
+Files: thirdparty/fonts/JetBrainsMono_Regular.woff2
 Comment: JetBrains Mono font
 Copyright: 2020, JetBrains s.r.o.
 License: OFL-1.1
-Files: ./thirdparty/fonts/NotoSans*.woff2
+Files: thirdparty/fonts/NotoSans*.woff2
 Comment: Noto Sans font
 Copyright: 2012, Google Inc.
 License: OFL-1.1
-Files: ./thirdparty/freetype/
+Files: thirdparty/fonts/Vazirmatn*.woff2
 Comment: Vazirmatn font
 Copyright: 2015, The Vazirmatn Project Authors.
 License: OFL-1.1
 Files: thirdparty/freetype/*
 Comment: The FreeType Project
 Copyright: 1996-2023, David Turner, Robert Wilhelm, and Werner Lemberg.
 License: FTL
-Files: ./thirdparty/glad/
+Files: thirdparty/glad/*
 Comment: glad
 Copyright: 2013-2022, David Herberth
 2013-2020, The Khronos Group Inc.
 License: CC0-1.0 and Apache-2.0
-Files: ./thirdparty/glslang/
+Files: thirdparty/glslang/*
 Comment: glslang
 Copyright: 2015-2020, Google, Inc.
  2014-2020, The Khronos Group Inc
  2002, NVIDIA Corporation.
 License: glslang
-Files: ./thirdparty/graphite/
+Files: thirdparty/graphite/*
 Comment: Graphite engine
 Copyright: 2010, SIL International
 License: Expat
-Files: ./thirdparty/harfbuzz/
+Files: thirdparty/harfbuzz/*
 Comment: HarfBuzz text shaping library
 Copyright: 2010-2022, Google, Inc.
 2015-2020, Ebrahim Byagowi
@ -283,248 +303,263 @@ Copyright: 2010-2022, Google, Inc.
 2013-2015, Alexei Podtelezhnikov
 License: HarfBuzz
-Files: ./thirdparty/icu4c/
+Files: thirdparty/icu4c/*
 Comment: International Components for Unicode
 Copyright: 2016-2024, Unicode, Inc.
 License: Unicode
-Files: ./thirdparty/jpeg-compressor/
+Files: thirdparty/jolt_physics/*
 Comment: Jolt Physics
 Copyright: 2021, Jorrit Rouwe
 License: Expat
 Files: thirdparty/jpeg-compressor/*
 Comment: jpeg-compressor
 Copyright: 2012, Rich Geldreich
 License: public-domain or Apache-2.0
-Files: ./thirdparty/libbacktrace/
+Files: thirdparty/libbacktrace/*
 Comment: libbacktrace
 Copyright: 2012-2021, Free Software Foundation, Inc.
 License: BSD-3-clause
-Files: ./thirdparty/libktx/
+Files: thirdparty/libktx/*
 Comment: KTX
 Copyright: 2013-2020, Mark Callow
 2010-2020 The Khronos Group, Inc.
 License: Apache-2.0
-Files: ./thirdparty/libogg/
+Files: thirdparty/libogg/*
 Comment: OggVorbis
 Copyright: 2002, Xiph.org Foundation
 License: BSD-3-clause
-Files: ./thirdparty/libpng/
+Files: thirdparty/libpng/*
 Comment: libpng
-Copyright: 1995-2024, The PNG Reference Library Authors.
+Copyright: 1995-2025, The PNG Reference Library Authors.
- 2018-2024, Cosmin Truta.
+ 2018-2025, Cosmin Truta.
 2000-2002, 2004, 2006-2018 Glenn Randers-Pehrson.
 1996-1997, Andreas Dilger.
 1995-1996, Guy Eric Schalnat, Group 42, Inc.
 License: Zlib
-Files: ./thirdparty/libtheora/
+Files: thirdparty/libtheora/*
 Comment: OggTheora
 Copyright: 2002-2009, Xiph.org Foundation
 License: BSD-3-clause
-Files: ./thirdparty/libvorbis/
+Files: thirdparty/libvorbis/*
 Comment: OggVorbis
 Copyright: 2002-2015, Xiph.org Foundation
 License: BSD-3-clause
-Files: ./thirdparty/libwebp/
+Files: thirdparty/libwebp/*
 Comment: WebP codec
 Copyright: 2010, Google Inc.
 License: BSD-3-clause
-Files: ./thirdparty/mbedtls/
+Files: thirdparty/manifold/*
 Comment: Manifold
 Copyright: 2020-2024, The Manifold Authors
 License: Apache-2.0
 Files: thirdparty/mbedtls/*
 Comment: Mbed TLS
 Copyright: The Mbed TLS Contributors
 License: Apache-2.0
-Files: ./thirdparty/meshoptimizer/
+Files: thirdparty/meshoptimizer/*
 Comment: meshoptimizer
-Copyright: 2016-2023, Arseny Kapoulkine
+Copyright: 2016-2024, Arseny Kapoulkine
 License: Expat
-Files: ./thirdparty/mingw-std-threads/
+Files: thirdparty/mingw-std-threads/*
 Comment: mingw-std-threads
 Copyright: 2016, Mega Limited
 License: BSD-2-clause
-Files: ./thirdparty/minimp3/
+Files: thirdparty/minimp3/*
 Comment: MiniMP3
 Copyright: lieff
 License: CC0-1.0
-Files: ./thirdparty/miniupnpc/
+Files: thirdparty/miniupnpc/*
 Comment: MiniUPnP Project
 Copyright: 2005-2024, Thomas Bernard
 License: BSD-3-clause
-Files: ./thirdparty/minizip/
+Files: thirdparty/minizip/*
 Comment: MiniZip
 Copyright: 1998-2010, Gilles Vollant
 2007-2008, Even Rouault
 2009-2010, Mathias Svensson
 License: Zlib
-Files: ./thirdparty/misc/cubemap_coeffs.h
+Files: thirdparty/misc/bcdec.h
 Comment: bcdec
 Copyright: 2022, Sergii Kudlai
 License: Expat
 Files: thirdparty/misc/cubemap_coeffs.h
 Comment: Fast Filtering of Reflection Probes
 Copyright: 2016, Activision Publishing, Inc.
 License: Expat
-Files: ./thirdparty/misc/fastlz.c
+Files: thirdparty/misc/fastlz.c
- ./thirdparty/misc/fastlz.h
+ thirdparty/misc/fastlz.h
 Comment: FastLZ
 Copyright: 2005-2020, Ariya Hidayat
 License: Expat
-Files: ./thirdparty/misc/ifaddrs-android.cc
+Files: thirdparty/misc/FastNoiseLite.h
 ./thirdparty/misc/ifaddrs-android.h
 Comment: libjingle
 Copyright: 2012-2013, Google Inc.
 License: BSD-3-clause
 Files: ./thirdparty/misc/mikktspace.c
 ./thirdparty/misc/mikktspace.h
 Comment: Tangent Space Normal Maps implementation
 Copyright: 2011, Morten S. Mikkelsen
 License: Zlib
 Files: ./thirdparty/misc/ok_color.h
 ./thirdparty/misc/ok_color_shader.h
 Comment: OK Lab color space
 Copyright: 2021, Björn Ottosson
 License: Expat
 Files: ./thirdparty/noise/FastNoiseLite.h
 Comment: FastNoise Lite
 Copyright: 2023, Jordan Peck and contributors
 License: Expat
-Files: ./thirdparty/misc/pcg.cpp
+Files: thirdparty/misc/ifaddrs-android.cc
- ./thirdparty/misc/pcg.h
+ thirdparty/misc/ifaddrs-android.h
 Comment: libjingle
 Copyright: 2012-2013, Google Inc.
 License: BSD-3-clause
 Files: thirdparty/misc/mikktspace.c
 thirdparty/misc/mikktspace.h
 Comment: Tangent Space Normal Maps implementation
 Copyright: 2011, Morten S. Mikkelsen
 License: Zlib
 Files: thirdparty/misc/nvapi_minimal.h
 Comment: NVIDIA NVAPI (minimal excerpt)
 Copyright: 2019-2022, NVIDIA Corporation
 License: Expat
 Files: thirdparty/misc/ok_color.h
 thirdparty/misc/ok_color_shader.h
 Comment: OK Lab color space
 Copyright: 2021, Björn Ottosson
 License: Expat
 Files: thirdparty/misc/pcg.cpp
 thirdparty/misc/pcg.h
 Comment: Minimal PCG32 implementation
 Copyright: 2014, M.E. O'Neill
 License: Apache-2.0
-Files: ./thirdparty/misc/polypartition.cpp
+Files: thirdparty/misc/polypartition.cpp
- ./thirdparty/misc/polypartition.h
+ thirdparty/misc/polypartition.h
 Comment: PolyPartition / Triangulator
 Copyright: 2011-2021, Ivan Fratric and contributors
 License: Expat
-Files: ./thirdparty/misc/qoa.h
+Files: thirdparty/misc/qoa.h
 Comment: Quite OK Audio Format
 Copyright: 2023, Dominic Szablewski
 License: Expat
-Files: ./thirdparty/misc/r128.c
+Files: thirdparty/misc/r128.c
- ./thirdparty/misc/r128.h
+ thirdparty/misc/r128.h
 Comment: r128 library
 Copyright: Alan Hickman
 License: public-domain or Unlicense
-Files: ./thirdparty/misc/smaz.c
+Files: thirdparty/misc/smaz.c
- ./thirdparty/misc/smaz.h
+ thirdparty/misc/smaz.h
 Comment: SMAZ
 Copyright: 2006-2009, Salvatore Sanfilippo
 License: BSD-3-clause
-Files: ./thirdparty/misc/smolv.cpp
+Files: thirdparty/misc/smolv.cpp
- ./thirdparty/misc/smolv.h
+ thirdparty/misc/smolv.h
 Comment: SMOL-V
-Copyright: 2016-2020, Aras Pranckevicius
+Copyright: 2016-2024, Aras Pranckevicius
 License: public-domain or Unlicense or Expat
-Files: ./thirdparty/misc/stb_rect_pack.h
+Files: thirdparty/misc/stb_rect_pack.h
 Comment: stb libraries
 Copyright: Sean Barrett
 License: public-domain or Unlicense or Expat
-Files: ./thirdparty/misc/yuv2rgb.h
+Files: thirdparty/misc/yuv2rgb.h
 Comment: YUV2RGB
 Copyright: 2008-2011, Robin Watts
 License: BSD-2-clause
-Files: ./thirdparty/msdfgen/
+Files: thirdparty/msdfgen/*
 Comment: Multi-channel signed distance field generator
-Copyright: 2016-2022, Viktor Chlumsky
+Copyright: 2014-2024, Viktor Chlumsky
 License: Expat
-Files: ./thirdparty/nvapi/nvapi_minimal.h
+Files: thirdparty/openxr/*
 Comment: Stripped down version of "nvapi.h" from the NVIDIA NVAPI SDK
 Copyright: 2019-2022, NVIDIA Corporation
 License: Expat
 Files: ./thirdparty/openxr/
 Comment: OpenXR Loader
 Copyright: 2020-2023, The Khronos Group Inc.
 License: Apache-2.0
-Files: ./thirdparty/pcre2/
+Files: thirdparty/pcre2/*
 Comment: PCRE2
 Copyright: 1997-2024, University of Cambridge
 2009-2024, Zoltan Herczeg
 License: BSD-3-clause
-Files: ./thirdparty/recastnavigation/
+Files: thirdparty/recastnavigation/*
 Comment: Recast
 Copyright: 2009, Mikko Mononen
 License: Zlib
-Files: ./thirdparty/rvo2/
+Files: thirdparty/rvo2/*
 Comment: RVO2
 Copyright: 2016, University of North Carolina at Chapel Hill
 License: Apache-2.0
-Files: ./thirdparty/spirv-reflect/
+Files: thirdparty/spirv-cross/*
 Comment: SPIRV-Cross
 Copyright: 2015-2021, Arm Limited
 License: Apache-2.0 or Expat
 Files: thirdparty/spirv-reflect/*
 Comment: SPIRV-Reflect
 Copyright: 2017-2022, Google Inc.
 License: Apache-2.0
-Files: ./thirdparty/squish/
+Files: thirdparty/thorvg/*
 Comment: libSquish
 Copyright: 2006, Simon Brown
 License: Expat
 Files: ./thirdparty/thorvg/
 Comment: ThorVG
 Copyright: 2020-2024, The ThorVG Project
 License: Expat
-Files: ./thirdparty/tinyexr/
+Files: thirdparty/tinyexr/*
 Comment: TinyEXR
 Copyright: 2014-2021, Syoyo Fujita
  2002, Industrial Light & Magic, a division of Lucas Digital Ltd. LLC
 License: BSD-3-clause
-Files: ./thirdparty/ufbx/
+Files: thirdparty/ufbx/*
 Comment: ufbx
 Copyright: 2020, Samuli Raivio
 License: Expat
-Files: ./thirdparty/vhacd/
+Files: thirdparty/vhacd/*
 Comment: V-HACD
 Copyright: 2011, Khaled Mamou
  2003-2009, Erwin Coumans
 License: BSD-3-clause
-Files: ./thirdparty/volk/
+Files: thirdparty/volk/*
 Comment: volk
 Copyright: 2018-2024, Arseny Kapoulkine
 License: Expat
-Files: ./thirdparty/vulkan/
+Files: thirdparty/vulkan/*
 Comment: Vulkan Headers
 Copyright: 2014-2024, The Khronos Group Inc.
  2014-2024, Valve Corporation
  2014-2024, LunarG, Inc.
 License: Apache-2.0
-Files: ./thirdparty/vulkan/vk_mem_alloc.h
+Files: thirdparty/vulkan/vk_mem_alloc.h
 Comment: Vulkan Memory Allocator
 Copyright: 2017-2024, Advanced Micro Devices, Inc.
 License: Expat
-Files: ./thirdparty/wayland/
+Files: thirdparty/wayland/*
 Comment: Wayland core protocol
 Copyright: 2008-2012, Kristian Høgsberg
  2010-2012, Intel Corporation
@ -532,7 +567,7 @@ Copyright: 2008-2012, Kristian Høgsberg
  2012, Collabora, Ltd.
 License: Expat
-Files: ./thirdparty/wayland-protocols/
+Files: thirdparty/wayland-protocols/*
 Comment: Wayland protocols that add functionality not available in the core protocol
 Copyright: 2008-2013, Kristian Høgsberg
  2010-2013, Intel Corporation
@ -544,24 +579,24 @@ Copyright: 2008-2013, Kristian Høgsberg
  2015,      Red Hat Inc.
 License: Expat
-Files: ./thirdparty/wslay/
+Files: thirdparty/wslay/*
 Comment: Wslay
 Copyright: 2011, 2012, 2015, Tatsuhiro Tsujikawa
 License: Expat
-Files: ./thirdparty/xatlas/
+Files: thirdparty/xatlas/*
 Comment: xatlas
 Copyright: 2018-2020, Jonathan Young
  2013, Thekla, Inc
  2006, NVIDIA Corporation, Ignacio Castano
 License: Expat
-Files: ./thirdparty/zlib/
+Files: thirdparty/zlib/*
 Comment: zlib
 Copyright: 1995-2024, Jean-loup Gailly and Mark Adler
 License: Zlib
-Files: ./thirdparty/zstd/
+Files: thirdparty/zstd/*
 Comment: Zstandard
 Copyright: Meta Platforms, Inc. and affiliates.
 License: BSD-3-clause
@ -569,6 +604,196 @@ License: BSD-3-clause
 License: Apache-2.0
                               Apache License
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                      http://www.apache.org/licenses/
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--- a/engine/DONORS.md
+++ b/engine/DONORS.md
@ -12,12 +12,12 @@ generous deed immortalized in the next stable release of Godot Engine.
 ## Patrons
    Khronos® Group <https://www.khronos.org/>
    OSS Capital <https://oss.capital/>
    Re-Logic <https://re-logic.com/>
 ## Platinum sponsors
-    Google Play <https://play.google.com/>
+    Google Play <https://play.google.com>
    Ramatak <https://ramatak.com/>
    V-Sekai <https://github.com/V-Sekai>
    W4 Games <https://w4games.com/>
@ -25,53 +25,56 @@ generous deed immortalized in the next stable release of Godot Engine.
 ## Gold sponsors
    Mega Crit <https://www.megacrit.com/>
-    Pirate Software <https://gopiratesoftware.com/>
+    Pirate Software <https://gopiratesoftware.com>
-    Prehensile Tales <https://prehensile-tales.com/>
+    Prehensile Tales <https://prehensile-tales.com>
    Robot Gentleman <http://robotgentleman.com/>
 ## Silver sponsors
-    Broken Rules <https://brokenrul.es/>
+    Broken Rules <https://brokenrul.es>
-    Chasing Carrots <https://www.chasing-carrots.com/>
+    Chasing Carrots <https://www.chasing-carrots.com>
    Copia Wealth Studios <https://copiawealthstudios.com/>
    Indoor Astronaut <https://indoorastronaut.ch/>
-    Load Complete <https://loadcomplete.com/>
+    LoadComplete <https://loadcomplete.com/>
    Null <https://null.com/>
    Orbital Knight <https://www.orbitalknight.com/>
    Playful Studios <https://playfulstudios.com/>
    Re-Logic <https://re-logic.com/>
 ## Diamond members
    Bippinbits <http://domekeepergame.com/>
-    Sealow
+    Sylv <https://rankith.itch.io/unnamed-space-idle-prototype>
-    And 5 anonymous donors
+    And 3 anonymous donors
 ## Titanium members
-    Adriaan de Jongh <https://adriaan.games/>
+    Adriaan de Jongh <https://adriaan.games>
-    Anitya Space <https://www.anitya.space/>
+    Anitya Space <https://www.anitya.space>
    Basically Games
-    FDG Entertainment <https://www.fdg-entertainment.com/>
+    FDG Entertainment <https://www.fdg-entertainment.com>
-    Game Dev Artisan <https://gamedevartisan.com/>
+    Game Dev Artisan <https://gamedevartisan.com>
    Garry Newman
-    Isaiah Smith <https://www.isaiahsmith.dev/>
+    Kenney <https://kenney.nl/>
-    Libretrend <https://libretrend.com/>
+    Libretrend <https://libretrend.com>
    Life Art Studios <https://lifeartstudios.net/>
    Lucid Silence Games
    Matthew Campbell
    PolyMars <https://polymars.dev/>
    RPG in a Box <https://www.rpginabox.com/>
    Razenpok <https://www.youtube.com/watch?v=-QxI-RP6-HM>
-    Smirk Software <https://smirk.gg/>
+    RPG in a Box <https://www.rpginabox.com>
    Smirk Software <https://smirk.gg>
    Studio Sunshower <https://www.studiosunshower.com/>
    TrampolineTales <https://TrampolineTales.com/>
    粟二华 (Su Erhua)
-    And 6 anonymous donors
+    And 4 anonymous donors
 ## Platinum members
    Andy Touch
    BlockImperiumGames (BIG)
    Christoph Woinke
    Christopher Shifflett
    Christoph Woinke
    Cody Bentley
    Darrin Massena
    Edward Flick
@ -79,8 +82,8 @@ generous deed immortalized in the next stable release of Godot Engine.
    HP van Braam
    iCommitGames
    Jonah Stich
    Justo Delgado Baudí
    katnamag
    Marek Belski
    Matthew Ekenstedt
    Memories in 8Bit
    Mike King
@ -97,13 +100,14 @@ generous deed immortalized in the next stable release of Godot Engine.
    TigerJ
    Violin Iliev
    Vladimír Chvátil
-    And 16 anonymous donors
+    And 13 anonymous donors
 ## Gold members
    80px
    afreytes
    alMoo Games
    alMoo Games
    Alva Majo
    Antti Vesanen
    Asher Glick
@ -119,6 +123,8 @@ generous deed immortalized in the next stable release of Godot Engine.
    Bryce Dixon
    c64cosmin
    Carlo del Mundo
    Carl van der Geest
    Chocolate Software
    Cindy Trieu
    ClarkThyLord
    Codex404
@ -135,17 +141,21 @@ generous deed immortalized in the next stable release of Godot Engine.
    dgehrig
    dhanielk
    Distorted Realities
    Donkung
    Dono
    Don't You Know Who I Am? Inc.
    Dustuu
    Dylan P.
    Edelweiss
    Ends
    Eren Ogrul
    Eric Brand
    Eric Phy
    Faisal Al-Kubaisi (QatariGameDev)
    Felix Adam
    FeralBytes
    Festzeltgaming.de
    Frozen Fractal
    Gaudipern
    GlassBrick
    Grau
@ -153,6 +163,7 @@ generous deed immortalized in the next stable release of Godot Engine.
    Hayden Oliver
    hiulit
    Illyan
    Immaculate Lift Studio
    Ivan Tabashki
    Jacob (HACKhalo2 Studios)
    Jam
@ -160,13 +171,12 @@ generous deed immortalized in the next stable release of Godot Engine.
    Javier Roman
    Jeff Hungerford
    Jeronimo Schreyer
    Joel Martinez
    Johannes Wuensch
    John Gabriel
    Jonas Yamazaki
    Jonathan
    José Canepa
    Joshua Stelly
    Justin Sasso
    Kalydi Balázs
    KAR Games
    Kiri "ExpiredPopsicle" Artemis
@ -181,7 +191,9 @@ generous deed immortalized in the next stable release of Godot Engine.
    m1n1ster
    Manuel Requena
    Mara Huldra
    Marek Belski
    Martin Šenkeřík
    MHDante
    Michael Gooch
    Modus Ponens
    Moshe Harris
@ -190,6 +202,7 @@ generous deed immortalized in the next stable release of Godot Engine.
    Nassor Paulino da Silva
    nezticle
    Niklas Wahrman
    Nitzan Bueno
    Niwl Games
    NotNet
    Oathbringer
@ -207,6 +220,7 @@ generous deed immortalized in the next stable release of Godot Engine.
    re:thinc
    Richard Ivánek
    Rudi P
    Sam Leathers
    Samuel Judd
    ScoreSpace
    Shiny Shinken
@ -238,12 +252,12 @@ generous deed immortalized in the next stable release of Godot Engine.
    Zhu Li
    zikes
    嗯大爷
    潘彦圣
    Alex Khayrullin
    Algebrute
    Andriy
    Antanas Paskauskas
    anti666
    Ari
    Arisaka Mayuki
    Arthur S. Muszynski
@ -269,13 +283,11 @@ generous deed immortalized in the next stable release of Godot Engine.
    Liam Smyth
    LoparPanda
    Martin Gulliksson
    Martin Soucek
    Michael Dürwald
    Michael Policastro
    n00sh
    Nicolás Monner Sans
    Nikita Rotskov
    Nikola Whallon
    Oliver Dick
    Patrick Wuttke
    Pete Goodwin
@ -298,7 +310,6 @@ generous deed immortalized in the next stable release of Godot Engine.
    VoidPointer
    Yifan Lai
    Aaron Mayfield
    Adam Carr
    Adam Smeltzer
    Adisibio
@ -315,7 +326,6 @@ generous deed immortalized in the next stable release of Godot Engine.
    Ano Nim
    Arch Toasty
    Arda Erol
    A Really Tall Horse
    Arturo Rosales
    Ash K
    Aubrey Falconer
@ -343,6 +353,7 @@ generous deed immortalized in the next stable release of Godot Engine.
    Dakota Watkins
    Daniele Tolomelli
    Daniel Ramos
    Daren Scot Wilson
    Dave Jansen
    Davesnothere
    David Baker
@ -361,12 +372,11 @@ generous deed immortalized in the next stable release of Godot Engine.
    Eric Stokes
    Eric Williams
    Erkki Seppälä
    Ewan Holmes
    Felix Adam
    Frank
    Frying☆Pan
    Game Endeavor
    gamerminstrel
    Garrett S
    Gary Thomas
    gebba
    Greyson Richey
@ -385,7 +395,6 @@ generous deed immortalized in the next stable release of Godot Engine.
    Jamie Massey
    JARKKO PARVIAINEN
    Jason Evans
    Joakim Askenbäck
    Jonas
    Jonas Arndt
    Jonas Yamazaki
@ -421,7 +430,6 @@ generous deed immortalized in the next stable release of Godot Engine.
    Martin Holas
    Martin Liška
    Martin Trbola
    Matěj Drábek
    Mathieu
    Matt Edwards
    Maverick
@ -441,7 +449,6 @@ generous deed immortalized in the next stable release of Godot Engine.
    Neofytos Chimonas
    Nerdforge
    Nerdyninja
    Nick Eldrenkamp
    Nik Rudenko
    Noel Billig
    ozrk
@ -450,7 +457,6 @@ generous deed immortalized in the next stable release of Godot Engine.
    Patrick Nafarrete
    Paul Black
    Paul Gieske
    Paul Mozet
    Pete
    Phoenix Jauregui
    Pierre Caye
@ -462,7 +468,6 @@ generous deed immortalized in the next stable release of Godot Engine.
    Raghava Kovvali
    Ragnar Pettersson
    Rammeow
    Rebecca H
    Richard Hayes
    Riley
    RobotCritter
@ -508,7 +513,7 @@ generous deed immortalized in the next stable release of Godot Engine.
    ケルベロス
    貴宏 小松
-    And 181 anonymous donors
+    And 176 anonymous donors
 ## Silver and bronze donors
--- a/engine/SConstruct
+++ b/engine/SConstruct
@ -1,15 +1,14 @@
 #!/usr/bin/env python
 from misc.utility.scons_hints import *
-EnsureSConsVersion(3, 1, 2)
+EnsureSConsVersion(4, 0)
-EnsurePythonVersion(3, 6)
+EnsurePythonVersion(3, 8)
 # System
 import atexit
 import glob
 import os
 import pickle
 import sys
 import time
 from collections import OrderedDict
 from importlib.util import module_from_spec, spec_from_file_location
 from types import ModuleType
@ -51,37 +50,20 @@ _helper_module("platform_methods", "platform_methods.py")
 _helper_module("version", "version.py")
 _helper_module("core.core_builders", "core/core_builders.py")
 _helper_module("main.main_builders", "main/main_builders.py")
 _helper_module("misc.utility.color", "misc/utility/color.py")
 # Local
 import gles3_builders
 import glsl_builders
 import methods
 import scu_builders
-from methods import print_error, print_warning
+from misc.utility.color import STDERR_COLOR, print_error, print_info, print_warning
-from platform_methods import architecture_aliases, architectures
+from platform_methods import architecture_aliases, architectures, compatibility_platform_aliases
 if ARGUMENTS.get("target", "editor") == "editor":
    _helper_module("editor.editor_builders", "editor/editor_builders.py")
    _helper_module("editor.template_builders", "editor/template_builders.py")
 # Enable ANSI escape code support on Windows 10 and later (for colored console output).
 # <https://github.com/python/cpython/issues/73245>
 if sys.stdout.isatty() and sys.platform == "win32":
    try:
        from ctypes import WinError, byref, windll  # type: ignore
        from ctypes.wintypes import DWORD  # type: ignore
        stdout_handle = windll.kernel32.GetStdHandle(DWORD(-11))
        mode = DWORD(0)
        if not windll.kernel32.GetConsoleMode(stdout_handle, byref(mode)):
            raise WinError()
        mode = DWORD(mode.value | 4)
        if not windll.kernel32.SetConsoleMode(stdout_handle, mode):
            raise WinError()
    except Exception as e:
        methods._colorize = False
        print_error(f"Failed to enable ANSI escape code support, disabling color output.\n{e}")
 # Scan possible build platforms
 platform_list = []  # list of platforms
@ -91,8 +73,6 @@ platform_doc_class_path = {}
 platform_exporters = []
 platform_apis = []
 time_at_start = time.time()
 for x in sorted(glob.glob("platform/*")):
    if not os.path.isdir(x) or not os.path.exists(x + "/detect.py"):
        continue
@ -127,34 +107,21 @@ for x in sorted(glob.glob("platform/*")):
    sys.path.remove(tmppath)
    sys.modules.pop("detect")
 custom_tools = ["default"]
 platform_arg = ARGUMENTS.get("platform", ARGUMENTS.get("p", False))
 if platform_arg == "android":
    custom_tools = ["clang", "clang++", "as", "ar", "link"]
 elif platform_arg == "web":
    # Use generic POSIX build toolchain for Emscripten.
    custom_tools = ["cc", "c++", "ar", "link", "textfile", "zip"]
 elif os.name == "nt" and methods.get_cmdline_bool("use_mingw", False):
    custom_tools = ["mingw"]
 # We let SCons build its default ENV as it includes OS-specific things which we don't
-# want to have to pull in manually.
+# want to have to pull in manually. However we enforce no "tools", which we register
 # further down after parsing our platform-specific configuration.
 # Then we prepend PATH to make it take precedence, while preserving SCons' own entries.
-env = Environment(tools=custom_tools)
+env = Environment(tools=[])
 env.PrependENVPath("PATH", os.getenv("PATH"))
 env.PrependENVPath("PKG_CONFIG_PATH", os.getenv("PKG_CONFIG_PATH"))
 if "TERM" in os.environ:  # Used for colored output.
    env["ENV"]["TERM"] = os.environ["TERM"]
-env.disabled_modules = []
+env.disabled_modules = set()
 env.module_version_string = ""
 env.msvc = False
 env.scons_version = env._get_major_minor_revision(scons_raw_version)
 env.__class__.disable_module = methods.disable_module
 env.__class__.add_module_version_string = methods.add_module_version_string
 env.__class__.add_source_files = methods.add_source_files
@ -190,11 +157,7 @@ if profile:
 opts = Variables(customs, ARGUMENTS)
 # Target build options
-if env.scons_version >= (4, 3):
+opts.Add((["platform", "p"], "Target platform (%s)" % "|".join(platform_list), ""))
    opts.Add(["platform", "p"], "Target platform (%s)" % "|".join(platform_list), "")
 else:
    opts.Add("platform", "Target platform (%s)" % "|".join(platform_list), "")
    opts.Add("p", "Alias for 'platform'", "")
 opts.Add(EnumVariable("target", "Compilation target", "editor", ("editor", "template_release", "template_debug")))
 opts.Add(EnumVariable("arch", "CPU architecture", "auto", ["auto"] + architectures, architecture_aliases))
 opts.Add(BoolVariable("dev_build", "Developer build with dev-only debugging code (DEV_ENABLED)", False))
@ -217,11 +180,12 @@ opts.Add(BoolVariable("threads", "Enable threading support", True))
 opts.Add(BoolVariable("deprecated", "Enable compatibility code for deprecated and removed features", True))
 opts.Add(EnumVariable("precision", "Set the floating-point precision level", "single", ("single", "double")))
 opts.Add(BoolVariable("minizip", "Enable ZIP archive support using minizip", True))
-opts.Add(BoolVariable("brotli", "Enable Brotli for decompresson and WOFF2 fonts support", True))
+opts.Add(BoolVariable("brotli", "Enable Brotli for decompression and WOFF2 fonts support", True))
-opts.Add(BoolVariable("xaudio2", "Enable the XAudio2 audio driver", False))
+opts.Add(BoolVariable("xaudio2", "Enable the XAudio2 audio driver on supported platforms", False))
 opts.Add(BoolVariable("vulkan", "Enable the vulkan rendering driver", True))
 opts.Add(BoolVariable("opengl3", "Enable the OpenGL/GLES3 rendering driver", True))
-opts.Add(BoolVariable("d3d12", "Enable the Direct3D 12 rendering driver", False))
+opts.Add(BoolVariable("d3d12", "Enable the Direct3D 12 rendering driver on supported platforms", False))
 opts.Add(BoolVariable("metal", "Enable the Metal rendering driver on supported platforms (Apple arm64 only)", False))
 opts.Add(BoolVariable("openxr", "Enable the OpenXR driver", True))
 opts.Add(BoolVariable("use_volk", "Use the volk library to load the Vulkan loader dynamically", True))
 opts.Add(BoolVariable("disable_exceptions", "Force disabling exception handling code", True))
@ -229,11 +193,22 @@ opts.Add("custom_modules", "A list of comma-separated directory paths containing
 opts.Add(BoolVariable("custom_modules_recursive", "Detect custom modules recursively for each specified path.", True))
 # Advanced options
-opts.Add(BoolVariable("dev_mode", "Alias for dev options: verbose=yes warnings=extra werror=yes tests=yes", False))
+opts.Add(
    BoolVariable(
        "dev_mode", "Alias for dev options: verbose=yes warnings=extra werror=yes tests=yes strict_checks=yes", False
    )
 )
 opts.Add(BoolVariable("tests", "Build the unit tests", False))
 opts.Add(BoolVariable("fast_unsafe", "Enable unsafe options for faster rebuilds", False))
 opts.Add(BoolVariable("ninja", "Use the ninja backend for faster rebuilds", False))
 opts.Add(BoolVariable("ninja_auto_run", "Run ninja automatically after generating the ninja file", True))
 opts.Add("ninja_file", "Path to the generated ninja file", "build.ninja")
 opts.Add(BoolVariable("compiledb", "Generate compilation DB (`compile_commands.json`) for external tools", False))
 opts.Add(
    "num_jobs",
    "Use up to N jobs when compiling (equivalent to `-j N`). Defaults to max jobs - 1. Ignored if -j is used.",
    "",
 )
 opts.Add(BoolVariable("verbose", "Enable verbose output for the compilation", False))
 opts.Add(BoolVariable("progress", "Show a progress indicator during compilation", True))
 opts.Add(EnumVariable("warnings", "Level of compilation warnings", "all", ("extra", "all", "moderate", "no")))
@ -254,10 +229,13 @@ opts.Add(
    "",
 )
 opts.Add(BoolVariable("use_precise_math_checks", "Math checks use very precise epsilon (debug option)", False))
 opts.Add(BoolVariable("strict_checks", "Enforce stricter checks (debug option)", False))
 opts.Add(BoolVariable("scu_build", "Use single compilation unit build", False))
 opts.Add("scu_limit", "Max includes per SCU file when using scu_build (determines RAM use)", "0")
 opts.Add(BoolVariable("engine_update_check", "Enable engine update checks in the Project Manager", True))
 opts.Add(BoolVariable("steamapi", "Enable minimal SteamAPI integration for usage time tracking (editor only)", False))
 opts.Add("cache_path", "Path to a directory where SCons cache files will be stored. No value disables the cache.", "")
 opts.Add("cache_limit", "Max size (in GiB) for the SCons cache. 0 means no limit.", "0")
 # Thirdparty libraries
 opts.Add(BoolVariable("builtin_brotli", "Use the built-in Brotli library", True))
@ -285,7 +263,6 @@ opts.Add(BoolVariable("builtin_pcre2_with_jit", "Use JIT compiler for the built-
 opts.Add(BoolVariable("builtin_recastnavigation", "Use the built-in Recast navigation library", True))
 opts.Add(BoolVariable("builtin_rvo2_2d", "Use the built-in RVO2 2D library", True))
 opts.Add(BoolVariable("builtin_rvo2_3d", "Use the built-in RVO2 3D library", True))
 opts.Add(BoolVariable("builtin_squish", "Use the built-in squish library", True))
 opts.Add(BoolVariable("builtin_xatlas", "Use the built-in xatlas library", True))
 opts.Add(BoolVariable("builtin_zlib", "Use the built-in zlib library", True))
 opts.Add(BoolVariable("builtin_zstd", "Use the built-in Zstd library", True))
@ -309,6 +286,9 @@ opts.Add("rcflags", "Custom flags for Windows resource compiler")
 # in following code (especially platform and custom_modules).
 opts.Update(env)
 # Setup caching logic early to catch everything.
 methods.prepare_cache(env)
 # Copy custom environment variables if set.
 if env["import_env_vars"]:
    for env_var in str(env["import_env_vars"]).split(","):
@ -317,10 +297,7 @@ if env["import_env_vars"]:
 # Platform selection: validate input, and add options.
-if env.scons_version < (4, 3) and not env["platform"]:
+if not env["platform"]:
    env["platform"] = env["p"]
 if env["platform"] == "":
    # Missing `platform` argument, try to detect platform automatically
    if (
        sys.platform.startswith("linux")
@ -335,38 +312,29 @@ if env["platform"] == "":
    elif sys.platform == "win32":
        env["platform"] = "windows"
-    if env["platform"] != "":
+    if env["platform"]:
-        print(f'Automatically detected platform: {env["platform"]}')
+        print(f"Automatically detected platform: {env['platform']}")
-if env["platform"] == "osx":
+# Deprecated aliases kept for compatibility.
-    # Deprecated alias kept for compatibility.
+if env["platform"] in compatibility_platform_aliases:
-    print_warning('Platform "osx" has been renamed to "macos" in Godot 4. Building for platform "macos".')
+    alias = env["platform"]
-    env["platform"] = "macos"
+    platform = compatibility_platform_aliases[alias]
    print_warning(
        f'Platform "{alias}" has been renamed to "{platform}" in Godot 4. Building for platform "{platform}".'
    )
    env["platform"] = platform
-if env["platform"] == "iphone":
+# Alias for convenience.
-    # Deprecated alias kept for compatibility.
+if env["platform"] in ["linux", "bsd"]:
    print_warning('Platform "iphone" has been renamed to "ios" in Godot 4. Building for platform "ios".')
    env["platform"] = "ios"
 if env["platform"] in ["linux", "bsd", "x11"]:
    if env["platform"] == "x11":
        # Deprecated alias kept for compatibility.
        print_warning('Platform "x11" has been renamed to "linuxbsd" in Godot 4. Building for platform "linuxbsd".')
    # Alias for convenience.
    env["platform"] = "linuxbsd"
 if env["platform"] == "javascript":
    # Deprecated alias kept for compatibility.
    print_warning('Platform "javascript" has been renamed to "web" in Godot 4. Building for platform "web".')
    env["platform"] = "web"
 if env["platform"] not in platform_list:
    text = "The following platforms are available:\n\t{}\n".format("\n\t".join(platform_list))
    text += "Please run SCons again and select a valid platform: platform=<string>."
    if env["platform"] == "list":
        print(text)
-    elif env["platform"] == "":
+    elif not env["platform"]:
        print_error("Could not detect platform automatically.\n" + text)
    else:
        print_error(f'Invalid target platform "{env["platform"]}".\n' + text)
@ -375,8 +343,7 @@ if env["platform"] not in platform_list:
 # Add platform-specific options.
 if env["platform"] in platform_opts:
-    for opt in platform_opts[env["platform"]]:
+    opts.AddVariables(*platform_opts[env["platform"]])
        opts.Add(opt)
 # Platform-specific flags.
 # These can sometimes override default options, so they need to be processed
@ -432,12 +399,11 @@ for name, path in modules_detected.items():
    else:
        enabled = False
-    opts.Add(BoolVariable("module_" + name + "_enabled", "Enable module '%s'" % (name,), enabled))
+    opts.Add(BoolVariable(f"module_{name}_enabled", f"Enable module '{name}'", enabled))
    # Add module-specific options.
    try:
-        for opt in config.get_opts(env["platform"]):
+        opts.AddVariables(*config.get_opts(env["platform"]))
            opts.Add(opt)
    except AttributeError:
        pass
@ -450,6 +416,23 @@ env.modules_detected = modules_detected
 opts.Update(env, {**ARGUMENTS, **env.Dictionary()})
 Help(opts.GenerateHelpText(env))
 # FIXME: Tool assignment happening at this stage is a direct consequence of getting the platform logic AFTER the SCons
 # environment was already been constructed. Fixing this would require a broader refactor where all options are setup
 # ahead of time with native validator/converter functions.
 tmppath = "./platform/" + env["platform"]
 sys.path.insert(0, tmppath)
 import detect
 custom_tools = ["default"]
 try:  # Platform custom tools are optional
    custom_tools = detect.get_tools(env)
 except AttributeError:
    pass
 for tool in custom_tools:
    env.Tool(tool)
 # add default include paths
 env.Prepend(CPPPATH=["#"])
@ -496,14 +479,19 @@ else:
    # Disable assert() for production targets (only used in thirdparty code).
    env.Append(CPPDEFINES=["NDEBUG"])
 # This is not part of fast_unsafe because the only downside it has compared to
 # the default is that SCons won't mark files that were changed in the last second
 # as different. This is unlikely to be a problem in any real situation as just booting
 # up scons takes more than that time.
 # Renamed to `content-timestamp` in SCons >= 4.2, keeping MD5 for compat.
 env.Decider("MD5-timestamp")
 # SCons speed optimization controlled by the `fast_unsafe` option, which provide
 # more than 10 s speed up for incremental rebuilds.
 # Unsafe as they reduce the certainty of rebuilding all changed files, so it's
 # enabled by default for `debug` builds, and can be overridden from command line.
 # Ref: https://github.com/SCons/scons/wiki/GoFastButton
 if methods.get_cmdline_bool("fast_unsafe", env.dev_build):
    # Renamed to `content-timestamp` in SCons >= 4.2, keeping MD5 for compat.
    env.Decider("MD5-timestamp")
    env.SetOption("implicit_cache", 1)
    env.SetOption("max_drift", 60)
@ -526,10 +514,6 @@ if not env["deprecated"]:
 if env["precision"] == "double":
    env.Append(CPPDEFINES=["REAL_T_IS_DOUBLE"])
 tmppath = "./platform/" + env["platform"]
 sys.path.insert(0, tmppath)
 import detect
 # Default num_jobs to local cpu count if not user specified.
 # SCons has a peculiarity where user-specified options won't be overridden
 # by SetOption, so we can rely on this to know if we should use our default.
@ -537,16 +521,22 @@ initial_num_jobs = env.GetOption("num_jobs")
 altered_num_jobs = initial_num_jobs + 1
 env.SetOption("num_jobs", altered_num_jobs)
 if env.GetOption("num_jobs") == altered_num_jobs:
-    cpu_count = os.cpu_count()
+    num_jobs = env.get("num_jobs", "")
-    if cpu_count is None:
+    if str(num_jobs).isdigit() and int(num_jobs) > 0:
-        print_warning("Couldn't auto-detect CPU count to configure build parallelism. Specify it with the -j argument.")
+        env.SetOption("num_jobs", num_jobs)
    else:
-        safer_cpu_count = cpu_count if cpu_count <= 4 else cpu_count - 1
+        cpu_count = os.cpu_count()
-        print(
+        if cpu_count is None:
-            "Auto-detected %d CPU cores available for build parallelism. Using %d cores by default. You can override it with the -j argument."
+            print_warning(
-            % (cpu_count, safer_cpu_count)
+                "Couldn't auto-detect CPU count to configure build parallelism. Specify it with the `-j` or `num_jobs` arguments."
-        )
+            )
-        env.SetOption("num_jobs", safer_cpu_count)
+        else:
            safer_cpu_count = cpu_count if cpu_count <= 4 else cpu_count - 1
            print(
                "Auto-detected %d CPU cores available for build parallelism. Using %d cores by default. You can override it with the `-j` or `num_jobs` arguments."
                % (cpu_count, safer_cpu_count)
            )
            env.SetOption("num_jobs", safer_cpu_count)
 env.extra_suffix = ""
@ -566,7 +556,7 @@ env.Append(RCFLAGS=env.get("rcflags", "").split())
 # Feature build profile
 env.disabled_classes = []
 if env["build_profile"] != "":
-    print('Using feature build profile: "{}"'.format(env["build_profile"]))
+    print(f'Using feature build profile: "{env["build_profile"]}"')
    import json
    try:
@ -578,7 +568,7 @@ if env["build_profile"] != "":
            for c in dbo:
                env[c] = dbo[c]
    except json.JSONDecodeError:
-        print_error('Failed to open feature build profile: "{}"'.format(env["build_profile"]))
+        print_error(f'Failed to open feature build profile: "{env["build_profile"]}"')
        Exit(255)
 # 'dev_mode' and 'production' are aliases to set default options if they haven't been
@ -588,12 +578,18 @@ if env["dev_mode"]:
    env["warnings"] = ARGUMENTS.get("warnings", "extra")
    env["werror"] = methods.get_cmdline_bool("werror", True)
    env["tests"] = methods.get_cmdline_bool("tests", True)
    env["strict_checks"] = methods.get_cmdline_bool("strict_checks", True)
 if env["production"]:
    env["use_static_cpp"] = methods.get_cmdline_bool("use_static_cpp", True)
    env["debug_symbols"] = methods.get_cmdline_bool("debug_symbols", False)
    if env["platform"] == "android":
        env["swappy"] = methods.get_cmdline_bool("swappy", True)
    # LTO "auto" means we handle the preferred option in each platform detect.py.
    env["lto"] = ARGUMENTS.get("lto", "auto")
 if env["strict_checks"]:
    env.Append(CPPDEFINES=["STRICT_CHECKS"])
 # Run SCU file generation script if in a SCU build.
 if env["scu_build"]:
    max_includes_per_scu = 8
@ -613,28 +609,21 @@ detect.configure(env)
 print(f'Building for platform "{env["platform"]}", architecture "{env["arch"]}", target "{env["target"]}".')
 if env.dev_build:
-    print("NOTE: Developer build, with debug optimization level and debug symbols (unless overridden).")
+    print_info("Developer build, with debug optimization level and debug symbols (unless overridden).")
 # Enforce our minimal compiler version requirements
-cc_version = methods.get_compiler_version(env) or {
+cc_version = methods.get_compiler_version(env)
-    "major": None,
+cc_version_major = cc_version["major"]
-    "minor": None,
+cc_version_minor = cc_version["minor"]
-    "patch": None,
+cc_version_metadata1 = cc_version["metadata1"]
    "metadata1": None,
    "metadata2": None,
    "date": None,
 }
 cc_version_major = int(cc_version["major"] or -1)
 cc_version_minor = int(cc_version["minor"] or -1)
 cc_version_metadata1 = cc_version["metadata1"] or ""
-if methods.using_gcc(env):
+if cc_version_major == -1:
-    if cc_version_major == -1:
+    print_warning(
-        print_warning(
+        "Couldn't detect compiler version, skipping version checks. "
-            "Couldn't detect compiler version, skipping version checks. "
+        "Build may fail if the compiler doesn't support C++17 fully."
-            "Build may fail if the compiler doesn't support C++17 fully."
+    )
-        )
+elif methods.using_gcc(env):
-    elif cc_version_major < 9:
+    if cc_version_major < 9:
        print_error(
            "Detected GCC version older than 9, which does not fully support "
            "C++17, or has bugs when compiling Godot. Supported versions are 9 "
@ -650,45 +639,68 @@ if methods.using_gcc(env):
            "to switch to posix threads."
        )
        Exit(255)
    if env["debug_paths_relative"] and cc_version_major < 8:
        print_warning("GCC < 8 doesn't support -ffile-prefix-map, disabling `debug_paths_relative` option.")
        env["debug_paths_relative"] = False
 elif methods.using_clang(env):
    if cc_version_major == -1:
        print_warning(
            "Couldn't detect compiler version, skipping version checks. "
            "Build may fail if the compiler doesn't support C++17 fully."
        )
    # Apple LLVM versions differ from upstream LLVM version \o/, compare
    # in https://en.wikipedia.org/wiki/Xcode#Toolchain_versions
-    elif env["platform"] == "macos" or env["platform"] == "ios":
+    if methods.is_apple_clang(env):
-        vanilla = methods.is_vanilla_clang(env)
+        if cc_version_major < 10:
        if vanilla and cc_version_major < 6:
            print_warning(
                "Detected Clang version older than 6, which does not fully support "
                "C++17. Supported versions are Clang 6 and later."
            )
            Exit(255)
        elif not vanilla and cc_version_major < 10:
            print_error(
                "Detected Apple Clang version older than 10, which does not fully "
                "support C++17. Supported versions are Apple Clang 10 and later."
            )
            Exit(255)
-        if env["debug_paths_relative"] and not vanilla and cc_version_major < 12:
+        elif env["debug_paths_relative"] and cc_version_major < 12:
            print_warning(
                "Apple Clang < 12 doesn't support -ffile-prefix-map, disabling `debug_paths_relative` option."
            )
            env["debug_paths_relative"] = False
-    elif cc_version_major < 6:
+    else:
        if cc_version_major < 6:
            print_error(
                "Detected Clang version older than 6, which does not fully support "
                "C++17. Supported versions are Clang 6 and later."
            )
            Exit(255)
        elif env["debug_paths_relative"] and cc_version_major < 10:
            print_warning("Clang < 10 doesn't support -ffile-prefix-map, disabling `debug_paths_relative` option.")
            env["debug_paths_relative"] = False
 elif env.msvc:
    # Ensure latest minor builds of Visual Studio 2017/2019.
    # https://github.com/godotengine/godot/pull/94995#issuecomment-2336464574
    if cc_version_major == 16 and cc_version_minor < 11:
        print_error(
-            "Detected Clang version older than 6, which does not fully support "
+            "Detected Visual Studio 2019 version older than 16.11, which has bugs "
-            "C++17. Supported versions are Clang 6 and later."
+            "when compiling Godot. Use a newer VS2019 version, or VS2022."
        )
        Exit(255)
-    if env["debug_paths_relative"] and cc_version_major < 10:
+    if cc_version_major == 15 and cc_version_minor < 9:
-        print_warning("Clang < 10 doesn't support -ffile-prefix-map, disabling `debug_paths_relative` option.")
+        print_error(
-        env["debug_paths_relative"] = False
+            "Detected Visual Studio 2017 version older than 15.9, which has bugs "
            "when compiling Godot. Use a newer VS2017 version, or VS2019/VS2022."
        )
        Exit(255)
    if cc_version_major < 15:
        print_error(
            "Detected Visual Studio 2015 or earlier, which is unsupported in Godot. "
            "Supported versions are Visual Studio 2017 and later."
        )
        Exit(255)
 # Default architecture flags.
 if env["arch"] == "x86_32":
    if env.msvc:
        env.Append(CCFLAGS=["/arch:SSE2"])
    else:
        env.Append(CCFLAGS=["-msse2"])
 # Explicitly specify colored output.
 if methods.using_gcc(env):
    env.AppendUnique(CCFLAGS=["-fdiagnostics-color" if STDERR_COLOR else "-fno-diagnostics-color"])
 elif methods.using_clang(env) or methods.using_emcc(env):
    env.AppendUnique(CCFLAGS=["-fcolor-diagnostics" if STDERR_COLOR else "-fno-color-diagnostics"])
    if sys.platform == "win32":
        env.AppendUnique(CCFLAGS=["-fansi-escape-codes"])
 # Set optimize and debug_symbols flags.
 # "custom" means do nothing and let users set their own optimization flags.
@ -712,9 +724,15 @@ if env.msvc:
        env.Append(CCFLAGS=["/Od"])
 else:
    if env["debug_symbols"]:
-        # Adding dwarf-4 explicitly makes stacktraces work with clang builds,
+        if env["platform"] == "windows":
-        # otherwise addr2line doesn't understand them
+            if methods.using_clang(env):
-        env.Append(CCFLAGS=["-gdwarf-4"])
+                env.Append(CCFLAGS=["-gdwarf-4"])  # clang dwarf-5 symbols are broken on Windows.
            else:
                env.Append(CCFLAGS=["-gdwarf-5"])  # For gcc, only dwarf-5 symbols seem usable by libbacktrace.
        else:
            # Adding dwarf-4 explicitly makes stacktraces work with clang builds,
            # otherwise addr2line doesn't understand them
            env.Append(CCFLAGS=["-gdwarf-4"])
        if methods.using_emcc(env):
            # Emscripten only produces dwarf symbols when using "-g3".
            env.Append(CCFLAGS=["-g3"])
@ -730,7 +748,7 @@ else:
            project_path = Dir("#").abspath
            env.Append(CCFLAGS=[f"-ffile-prefix-map={project_path}=."])
    else:
-        if methods.using_clang(env) and not methods.is_vanilla_clang(env):
+        if methods.is_apple_clang(env):
            # Apple Clang, its linker doesn't like -s.
            env.Append(LINKFLAGS=["-Wl,-S", "-Wl,-x", "-Wl,-dead_strip"])
        else:
@ -766,13 +784,23 @@ if env["lto"] != "none":
 # This needs to come after `configure`, otherwise we don't have env.msvc.
 if not env.msvc:
    # Specifying GNU extensions support explicitly, which are supported by
-    # both GCC and Clang. Both currently default to gnu11 and gnu++14.
+    # both GCC and Clang. Both currently default to gnu17 and gnu++17.
-    env.Prepend(CFLAGS=["-std=gnu11"])
+    env.Prepend(CFLAGS=["-std=gnu17"])
    env.Prepend(CXXFLAGS=["-std=gnu++17"])
 else:
-    # MSVC doesn't have clear C standard support, /std only covers C++.
+    # MSVC started offering C standard support with Visual Studio 2019 16.8, which covers all
-    # We apply it to CCFLAGS (both C and C++ code) in case it impacts C features.
+    # of our supported VS2019 & VS2022 versions; VS2017 will only pass the C++ standard.
-    env.Prepend(CCFLAGS=["/std:c++17"])
+    env.Prepend(CXXFLAGS=["/std:c++17"])
    if cc_version_major < 16:
        print_warning("Visual Studio 2017 cannot specify a C-Standard.")
    else:
        env.Prepend(CFLAGS=["/std:c17"])
    # MSVC is non-conforming with the C++ standard by default, so we enable more conformance.
    # Note that this is still not complete conformance, as certain Windows-related headers
    # don't compile under complete conformance.
    env.Prepend(CCFLAGS=["/permissive-"])
    # Allow use of `__cplusplus` macro to determine C++ standard universally.
    env.Prepend(CXXFLAGS=["/Zc:__cplusplus"])
 # Disable exception handling. Godot doesn't use exceptions anywhere, and this
 # saves around 20% of binary size and very significant build time (GH-80513).
@ -785,44 +813,42 @@ elif env.msvc:
    env.Append(CXXFLAGS=["/EHsc"])
 # Configure compiler warnings
-if env.msvc:  # MSVC
+if env.msvc and not methods.using_clang(env):  # MSVC
-    if env["warnings"] == "no":
+    # Disable warnings which we don't plan to fix.
-        env.Append(CCFLAGS=["/w"])
+    disabled_warnings = [
-    else:
+        "/wd4100",  # C4100 (unreferenced formal parameter): Doesn't play nice with polymorphism.
-        if env["warnings"] == "extra":
+        "/wd4127",  # C4127 (conditional expression is constant)
-            env.Append(CCFLAGS=["/W4"])
+        "/wd4201",  # C4201 (non-standard nameless struct/union): Only relevant for C89.
-        elif env["warnings"] == "all":
+        "/wd4244",  # C4244 C4245 C4267 (narrowing conversions): Unavoidable at this scale.
-            # C4458 is like -Wshadow. Part of /W4 but let's apply it for the default /W3 too.
+        "/wd4245",
-            env.Append(CCFLAGS=["/W3", "/w34458"])
+        "/wd4267",
-        elif env["warnings"] == "moderate":
+        "/wd4305",  # C4305 (truncation): double to float or real_t, too hard to avoid.
-            env.Append(CCFLAGS=["/W2"])
+        "/wd4324",  # C4820 (structure was padded due to alignment specifier)
-        # Disable warnings which we don't plan to fix.
+        "/wd4514",  # C4514 (unreferenced inline function has been removed)
        "/wd4714",  # C4714 (function marked as __forceinline not inlined)
        "/wd4820",  # C4820 (padding added after construct)
    ]
-        env.Append(
+    if env["warnings"] == "extra":
-            CCFLAGS=[
+        env.Append(CCFLAGS=["/W4"] + disabled_warnings)
-                "/wd4100",  # C4100 (unreferenced formal parameter): Doesn't play nice with polymorphism.
+    elif env["warnings"] == "all":
-                "/wd4127",  # C4127 (conditional expression is constant)
+        # C4458 is like -Wshadow. Part of /W4 but let's apply it for the default /W3 too.
-                "/wd4201",  # C4201 (non-standard nameless struct/union): Only relevant for C89.
+        env.Append(CCFLAGS=["/W3", "/w34458"] + disabled_warnings)
-                "/wd4244",  # C4244 C4245 C4267 (narrowing conversions): Unavoidable at this scale.
+    elif env["warnings"] == "moderate":
-                "/wd4245",
+        env.Append(CCFLAGS=["/W2"] + disabled_warnings)
-                "/wd4267",
+    else:  # 'no'
-                "/wd4305",  # C4305 (truncation): double to float or real_t, too hard to avoid.
+        # C4267 is particularly finicky & needs to be explicitly disabled.
-                "/wd4514",  # C4514 (unreferenced inline function has been removed)
+        env.Append(CCFLAGS=["/w", "/wd4267"])
                "/wd4714",  # C4714 (function marked as __forceinline not inlined)
                "/wd4820",  # C4820 (padding added after construct)
            ]
        )
    if env["werror"]:
        env.Append(CCFLAGS=["/WX"])
        env.Append(LINKFLAGS=["/WX"])
 else:  # GCC, Clang
    common_warnings = []
    if methods.using_gcc(env):
        common_warnings += ["-Wshadow", "-Wno-misleading-indentation"]
        if cc_version_major == 7:  # Bogus warning fixed in 8+.
            common_warnings += ["-Wno-strict-overflow"]
        if cc_version_major < 11:
            # Regression in GCC 9/10, spams so much in our variadic templates
            # that we need to outright disable it.
@ -835,8 +861,11 @@ else:  # GCC, Clang
        # for putting them in `Set` or `Map`. We don't mind about unreliable ordering.
        common_warnings += ["-Wno-ordered-compare-function-pointers"]
    # clang-cl will interpret `-Wall` as `-Weverything`, workaround with compatibility cast
    W_ALL = "-Wall" if not env.msvc else "-W3"
    if env["warnings"] == "extra":
-        env.Append(CCFLAGS=["-Wall", "-Wextra", "-Wwrite-strings", "-Wno-unused-parameter"] + common_warnings)
+        env.Append(CCFLAGS=[W_ALL, "-Wextra", "-Wwrite-strings", "-Wno-unused-parameter"] + common_warnings)
        env.Append(CXXFLAGS=["-Wctor-dtor-privacy", "-Wnon-virtual-dtor"])
        if methods.using_gcc(env):
            env.Append(
@ -858,9 +887,9 @@ else:  # GCC, Clang
        elif methods.using_clang(env) or methods.using_emcc(env):
            env.Append(CCFLAGS=["-Wimplicit-fallthrough"])
    elif env["warnings"] == "all":
-        env.Append(CCFLAGS=["-Wall"] + common_warnings)
+        env.Append(CCFLAGS=[W_ALL] + common_warnings)
    elif env["warnings"] == "moderate":
-        env.Append(CCFLAGS=["-Wall", "-Wno-unused"] + common_warnings)
+        env.Append(CCFLAGS=[W_ALL, "-Wno-unused"] + common_warnings)
    else:  # 'no'
        env.Append(CCFLAGS=["-w"])
@ -895,7 +924,7 @@ env.module_icons_paths = []
 env.doc_class_path = platform_doc_class_path
 for name, path in modules_detected.items():
-    if not env["module_" + name + "_enabled"]:
+    if not env[f"module_{name}_enabled"]:
        continue
    sys.path.insert(0, path)
    env.current_module = name
@ -932,7 +961,7 @@ methods.sort_module_list(env)
 if env.editor_build:
    # Add editor-specific dependencies to the dependency graph.
-    env.module_add_dependencies("editor", ["freetype", "svg"])
+    env.module_add_dependencies("editor", ["freetype", "regex", "svg"])
    # And check if they are met.
    if not env.module_check_dependencies("editor"):
@ -969,8 +998,7 @@ if env["disable_3d"]:
 if env["disable_advanced_gui"]:
    if env.editor_build:
        print_error(
-            "Build option `disable_advanced_gui=yes` cannot be used for editor builds, "
+            "Build option `disable_advanced_gui=yes` cannot be used for editor builds, only for export template builds."
            "only for export template builds."
        )
        Exit(255)
    else:
@ -1002,36 +1030,22 @@ GLSL_BUILDERS = {
 }
 env.Append(BUILDERS=GLSL_BUILDERS)
 scons_cache_path = os.environ.get("SCONS_CACHE")
 if scons_cache_path is not None:
    CacheDir(scons_cache_path)
    print("Scons cache enabled... (path: '" + scons_cache_path + "')")
 if env["vsproj"]:
    env.vs_incs = []
    env.vs_srcs = []
 if env["compiledb"]:
    if env.scons_version < (4, 0, 0):
        # Generating the compilation DB (`compile_commands.json`) requires SCons 4.0.0 or later.
        print_error("The `compiledb=yes` option requires SCons 4.0 or later, but your version is %s." % scons_raw_version)
        Exit(255)
    env.Tool("compilation_db")
    env.Alias("compiledb", env.CompilationDatabase())
    env.NoCache(env.CompilationDatabase())
    if not env["verbose"]:
        env["COMPILATIONDB_COMSTR"] = "$GENCOMSTR"
 if env["ninja"]:
    if env.scons_version < (4, 2, 0):
-        print_error("The `ninja=yes` option requires SCons 4.2 or later, but your version is %s." % scons_raw_version)
+        print_error(f"The `ninja=yes` option requires SCons 4.2 or later, but your version is {scons_raw_version}.")
        Exit(255)
    SetOption("experimental", "ninja")
-    env.Tool("ninja")
+    env["NINJA_FILE_NAME"] = env["ninja_file"]
-
+    env["NINJA_DISABLE_AUTO_RUN"] = not env["ninja_auto_run"]
-    # By setting this we allow the user to run ninja by themselves with all
+    env.Tool("ninja", env["ninja_file"])
    # the flags they need, as apparently automatically running from scons
    # is way slower.
    SetOption("disable_execute_ninja", True)
 # Threads
 if env["threads"]:
@ -1070,35 +1084,9 @@ if "check_c_headers" in env:
            env.AppendUnique(CPPDEFINES=[headers[header]])
 # FIXME: This method mixes both cosmetic progress stuff and cache handling...
 methods.show_progress(env)
 # TODO: replace this with `env.Dump(format="json")`
 # once we start requiring SCons 4.0 as min version.
 methods.dump(env)
-
+methods.prepare_purge(env)
-
+methods.prepare_timer()
 def print_elapsed_time():
    elapsed_time_sec = round(time.time() - time_at_start, 2)
    time_centiseconds = round((elapsed_time_sec % 1) * 100)
    print(
        "{}[Time elapsed: {}.{:02}]{}".format(
            methods.ANSI.GRAY,
            time.strftime("%H:%M:%S", time.gmtime(elapsed_time_sec)),
            time_centiseconds,
            methods.ANSI.RESET,
        )
    )
 atexit.register(print_elapsed_time)
 def purge_flaky_files():
    paths_to_keep = ["ninja.build"]
    for build_failure in GetBuildFailures():
        path = build_failure.node.path
        if os.path.isfile(path) and path not in paths_to_keep:
            os.remove(path)
 atexit.register(purge_flaky_files)
--- a/engine/core/SCsub
+++ b/engine/core/SCsub
@ -1,4 +1,5 @@
 #!/usr/bin/env python
 from misc.utility.scons_hints import *
 Import("env")
@ -98,6 +99,8 @@ if env["builtin_zlib"]:
    env.Prepend(CPPPATH=[thirdparty_zlib_dir])
    if env.dev_build:
        env_thirdparty.Append(CPPDEFINES=["ZLIB_DEBUG"])
        # Affects headers so it should also be defined for Godot code
        env.Append(CPPDEFINES=["ZLIB_DEBUG"])
    env_thirdparty.add_source_files(thirdparty_obj, thirdparty_zlib_sources)
@ -140,7 +143,7 @@ if env["builtin_zstd"]:
        "decompress/zstd_decompress_block.c",
        "decompress/zstd_decompress.c",
    ]
-    if env["platform"] in ["android", "ios", "linuxbsd", "macos"]:
+    if env["platform"] in ["android", "ios", "linuxbsd", "macos"] and env["arch"] == "x86_64":
        # Match platforms with ZSTD_ASM_SUPPORTED in common/portability_macros.h
        thirdparty_zstd_sources.append("decompress/huf_decompress_amd64.S")
    thirdparty_zstd_sources = [thirdparty_zstd_dir + file for file in thirdparty_zstd_sources]
--- a/engine/core/config/SCsub
+++ b/engine/core/config/SCsub
@ -1,4 +1,5 @@
 #!/usr/bin/env python
 from misc.utility.scons_hints import *
 Import("env")
--- a/engine/core/config/engine.cpp
+++ b/engine/core/config/engine.cpp
@ -36,6 +36,7 @@
 #include "core/license.gen.h"
 #include "core/variant/typed_array.h"
 #include "core/version.h"
 #include "servers/rendering/rendering_device.h"
 void Engine::set_physics_ticks_per_second(int p_ips) {
 	ERR_FAIL_COND_MSG(p_ips <= 0, "Engine iterations per second must be greater than 0.");
@ -68,6 +69,11 @@ double Engine::get_physics_jitter_fix() const {
 void Engine::set_max_fps(int p_fps) {
 	_max_fps = p_fps > 0 ? p_fps : 0;
 	RenderingDevice *rd = RenderingDevice::get_singleton();
 	if (rd) {
 		rd->_set_max_fps(_max_fps);
 	}
 }
 int Engine::get_max_fps() const {
@ -110,6 +116,10 @@ void Engine::set_time_scale(double p_scale) {
 }
 double Engine::get_time_scale() const {
 	return freeze_time_scale ? 0 : _time_scale;
 }
 double Engine::get_unfrozen_time_scale() const {
 	return _time_scale;
 }
@ -238,6 +248,9 @@ String Engine::get_architecture_name() const {
 	return "ppc";
 #endif
 #elif defined(__loongarch64)
 	return "loongarch64";
 #elif defined(__wasm__)
 #if defined(__wasm64__)
 	return "wasm64";
@ -263,6 +276,24 @@ bool Engine::is_generate_spirv_debug_info_enabled() const {
 	return generate_spirv_debug_info;
 }
 bool Engine::is_extra_gpu_memory_tracking_enabled() const {
 	return extra_gpu_memory_tracking;
 }
 #if defined(DEBUG_ENABLED) || defined(DEV_ENABLED)
 bool Engine::is_accurate_breadcrumbs_enabled() const {
 	return accurate_breadcrumbs;
 }
 #endif
 void Engine::set_print_to_stdout(bool p_enabled) {
 	CoreGlobals::print_line_enabled = p_enabled;
 }
 bool Engine::is_printing_to_stdout() const {
 	return CoreGlobals::print_line_enabled;
 }
 void Engine::set_print_error_messages(bool p_enabled) {
 	CoreGlobals::print_error_enabled = p_enabled;
 }
@ -380,6 +411,18 @@ bool Engine::notify_frame_server_synced() {
 	return server_syncs > SERVER_SYNC_FRAME_COUNT_WARNING;
 }
 void Engine::set_freeze_time_scale(bool p_frozen) {
 	freeze_time_scale = p_frozen;
 }
 void Engine::set_embedded_in_editor(bool p_enabled) {
 	embedded_in_editor = p_enabled;
 }
 bool Engine::is_embedded_in_editor() const {
 	return embedded_in_editor;
 }
 Engine::Engine() {
 	singleton = this;
 }
--- a/engine/core/config/engine.h
+++ b/engine/core/config/engine.h
@ -34,7 +34,6 @@
 #include "core/os/main_loop.h"
 #include "core/string/ustring.h"
 #include "core/templates/list.h"
 #include "core/templates/vector.h"
 template <typename T>
 class TypedArray;
@ -72,6 +71,10 @@ private:
 	bool abort_on_gpu_errors = false;
 	bool use_validation_layers = false;
 	bool generate_spirv_debug_info = false;
 	bool extra_gpu_memory_tracking = false;
 #if defined(DEBUG_ENABLED) || defined(DEV_ENABLED)
 	bool accurate_breadcrumbs = false;
 #endif
 	int32_t gpu_idx = -1;
 	uint64_t _process_frames = 0;
@ -83,6 +86,8 @@ private:
 	bool editor_hint = false;
 	bool project_manager_hint = false;
 	bool extension_reloading = false;
 	bool embedded_in_editor = false;
 	bool recovery_mode_hint = false;
 	bool _print_header = true;
@ -95,6 +100,8 @@ private:
 	int server_syncs = 0;
 	bool frame_server_synced = false;
 	bool freeze_time_scale = false;
 public:
 	static Engine *get_singleton();
@ -126,6 +133,10 @@ public:
 	void set_time_scale(double p_scale);
 	double get_time_scale() const;
 	double get_unfrozen_time_scale() const;
 	void set_print_to_stdout(bool p_enabled);
 	bool is_printing_to_stdout() const;
 	void set_print_error_messages(bool p_enabled);
 	bool is_printing_error_messages() const;
@ -152,6 +163,9 @@ public:
 	_FORCE_INLINE_ void set_extension_reloading_enabled(bool p_enabled) { extension_reloading = p_enabled; }
 	_FORCE_INLINE_ bool is_extension_reloading_enabled() const { return extension_reloading; }
 	_FORCE_INLINE_ void set_recovery_mode_hint(bool p_enabled) { recovery_mode_hint = p_enabled; }
 	_FORCE_INLINE_ bool is_recovery_mode_hint() const { return recovery_mode_hint; }
 #else
 	_FORCE_INLINE_ void set_editor_hint(bool p_enabled) {}
 	_FORCE_INLINE_ bool is_editor_hint() const { return false; }
@ -161,6 +175,9 @@ public:
 	_FORCE_INLINE_ void set_extension_reloading_enabled(bool p_enabled) {}
 	_FORCE_INLINE_ bool is_extension_reloading_enabled() const { return false; }
 	_FORCE_INLINE_ void set_recovery_mode_hint(bool p_enabled) {}
 	_FORCE_INLINE_ bool is_recovery_mode_hint() const { return false; }
 #endif
 	Dictionary get_version_info() const;
@ -181,11 +198,19 @@ public:
 	bool is_abort_on_gpu_errors_enabled() const;
 	bool is_validation_layers_enabled() const;
 	bool is_generate_spirv_debug_info_enabled() const;
 	bool is_extra_gpu_memory_tracking_enabled() const;
 #if defined(DEBUG_ENABLED) || defined(DEV_ENABLED)
 	bool is_accurate_breadcrumbs_enabled() const;
 #endif
 	int32_t get_gpu_index() const;
 	void increment_frames_drawn();
 	bool notify_frame_server_synced();
 	void set_freeze_time_scale(bool p_frozen);
 	void set_embedded_in_editor(bool p_enabled);
 	bool is_embedded_in_editor() const;
 	Engine();
 	virtual ~Engine();
 };
--- a/engine/core/config/project_settings.cpp
+++ b/engine/core/config/project_settings.cpp
@ -39,7 +39,6 @@
 #include "core/io/marshalls.h"
 #include "core/io/resource_uid.h"
 #include "core/object/script_language.h"
 #include "core/os/keyboard.h"
 #include "core/templates/rb_set.h"
 #include "core/variant/typed_array.h"
 #include "core/variant/variant_parser.h"
@ -194,7 +193,7 @@ String ProjectSettings::localize_path(const String &p_path) const {
 		return cwd.replace_first(res_path, "res://");
 	} else {
-		int sep = path.rfind("/");
+		int sep = path.rfind_char('/');
 		if (sep == -1) {
 			return "res://" + path;
 		}
@ -214,36 +213,36 @@ String ProjectSettings::localize_path(const String &p_path) const {
 }
 void ProjectSettings::set_initial_value(const String &p_name, const Variant &p_value) {
-	ERR_FAIL_COND_MSG(!props.has(p_name), "Request for nonexistent project setting: " + p_name + ".");
+	ERR_FAIL_COND_MSG(!props.has(p_name), vformat("Request for nonexistent project setting: '%s'.", p_name));
 	// Duplicate so that if value is array or dictionary, changing the setting will not change the stored initial value.
 	props[p_name].initial = p_value.duplicate();
 }
 void ProjectSettings::set_restart_if_changed(const String &p_name, bool p_restart) {
-	ERR_FAIL_COND_MSG(!props.has(p_name), "Request for nonexistent project setting: " + p_name + ".");
+	ERR_FAIL_COND_MSG(!props.has(p_name), vformat("Request for nonexistent project setting: '%s'.", p_name));
 	props[p_name].restart_if_changed = p_restart;
 }
 void ProjectSettings::set_as_basic(const String &p_name, bool p_basic) {
-	ERR_FAIL_COND_MSG(!props.has(p_name), "Request for nonexistent project setting: " + p_name + ".");
+	ERR_FAIL_COND_MSG(!props.has(p_name), vformat("Request for nonexistent project setting: '%s'.", p_name));
 	props[p_name].basic = p_basic;
 }
 void ProjectSettings::set_as_internal(const String &p_name, bool p_internal) {
-	ERR_FAIL_COND_MSG(!props.has(p_name), "Request for nonexistent project setting: " + p_name + ".");
+	ERR_FAIL_COND_MSG(!props.has(p_name), vformat("Request for nonexistent project setting: '%s'.", p_name));
 	props[p_name].internal = p_internal;
 }
 void ProjectSettings::set_ignore_value_in_docs(const String &p_name, bool p_ignore) {
-	ERR_FAIL_COND_MSG(!props.has(p_name), "Request for nonexistent project setting: " + p_name + ".");
+	ERR_FAIL_COND_MSG(!props.has(p_name), vformat("Request for nonexistent project setting: '%s'.", p_name));
 #ifdef DEBUG_METHODS_ENABLED
 	props[p_name].ignore_value_in_docs = p_ignore;
 #endif
 }
 bool ProjectSettings::get_ignore_value_in_docs(const String &p_name) const {
-	ERR_FAIL_COND_V_MSG(!props.has(p_name), false, "Request for nonexistent project setting: " + p_name + ".");
+	ERR_FAIL_COND_V_MSG(!props.has(p_name), false, vformat("Request for nonexistent project setting: '%s'.", p_name));
 #ifdef DEBUG_METHODS_ENABLED
 	return props[p_name].ignore_value_in_docs;
 #else
@ -262,6 +261,12 @@ String ProjectSettings::globalize_path(const String &p_path) const {
 			return p_path.replace("res:/", resource_path);
 		}
 		return p_path.replace("res://", "");
 	} else if (p_path.begins_with("uid://")) {
 		const String path = ResourceUID::uid_to_path(p_path);
 		if (!resource_path.is_empty()) {
 			return path.replace("res:/", resource_path);
 		}
 		return path.replace("res://", "");
 	} else if (p_path.begins_with("user://")) {
 		String data_dir = OS::get_singleton()->get_user_data_dir();
 		if (!data_dir.is_empty()) {
@ -300,7 +305,7 @@ bool ProjectSettings::_set(const StringName &p_name, const Variant &p_value) {
 		}
 		{ // Feature overrides.
-			int dot = p_name.operator String().find(".");
+			int dot = p_name.operator String().find_char('.');
 			if (dot != -1) {
 				Vector<String> s = p_name.operator String().split(".");
@ -348,7 +353,6 @@ bool ProjectSettings::_get(const StringName &p_name, Variant &r_ret) const {
 	_THREAD_SAFE_METHOD_
 	if (!props.has(p_name)) {
 		WARN_PRINT("Property not found: " + String(p_name));
 		return false;
 	}
 	r_ret = props[p_name].variant;
@ -372,7 +376,7 @@ Variant ProjectSettings::get_setting_with_override(const StringName &p_name) con
 	}
 	if (!props.has(name)) {
-		WARN_PRINT("Property not found: " + String(name));
+		WARN_PRINT(vformat("Property not found: '%s'.", String(name)));
 		return Variant();
 	}
 	return props[name].variant;
@ -436,7 +440,7 @@ void ProjectSettings::_get_property_list(List<PropertyInfo> *p_list) const {
 	for (const _VCSort &E : vclist) {
 		String prop_info_name = E.name;
-		int dot = prop_info_name.find(".");
+		int dot = prop_info_name.find_char('.');
 		if (dot != -1 && !custom_prop_info.has(prop_info_name)) {
 			prop_info_name = prop_info_name.substr(0, dot);
 		}
@ -468,13 +472,30 @@ void ProjectSettings::_emit_changed() {
 	emit_signal("settings_changed");
 }
-bool ProjectSettings::_load_resource_pack(const String &p_pack, bool p_replace_files, int p_offset) {
+bool ProjectSettings::load_resource_pack(const String &p_pack, bool p_replace_files, int p_offset) {
 	return ProjectSettings::_load_resource_pack(p_pack, p_replace_files, p_offset, false);
 }
 bool ProjectSettings::_load_resource_pack(const String &p_pack, bool p_replace_files, int p_offset, bool p_main_pack) {
 	if (PackedData::get_singleton()->is_disabled()) {
 		return false;
 	}
-	bool ok = PackedData::get_singleton()->add_pack(p_pack, p_replace_files, p_offset) == OK;
+	if (p_pack == "res://") {
 		// Loading the resource directory as a pack source is reserved for internal use only.
 		return false;
 	}
 	if (!p_main_pack && !using_datapack && !OS::get_singleton()->get_resource_dir().is_empty()) {
 		// Add the project's resource file system to PackedData so directory access keeps working when
 		// the game is running without a main pack, like in the editor or on Android.
 		PackedData::get_singleton()->add_pack_source(memnew(PackedSourceDirectory));
 		PackedData::get_singleton()->add_pack("res://", false, 0);
 		DirAccess::make_default<DirAccessPack>(DirAccess::ACCESS_RESOURCES);
 		using_datapack = true;
 	}
 	bool ok = PackedData::get_singleton()->add_pack(p_pack, p_replace_files, p_offset) == OK;
 	if (!ok) {
 		return false;
 	}
@ -487,14 +508,17 @@ bool ProjectSettings::_load_resource_pack(const String &p_pack, bool p_replace_f
 		ResourceUID::get_singleton()->load_from_cache(false);
 	}
-	//if data.pck is found, all directory access will be from here
+	// If the data pack was found, all directory access will be from here.
-	DirAccess::make_default<DirAccessPack>(DirAccess::ACCESS_RESOURCES);
+	if (!using_datapack) {
-	using_datapack = true;
+		DirAccess::make_default<DirAccessPack>(DirAccess::ACCESS_RESOURCES);
 		using_datapack = true;
 	}
 	return true;
 }
 void ProjectSettings::_convert_to_last_version(int p_from_version) {
 #ifndef DISABLE_DEPRECATED
 	if (p_from_version <= 3) {
 		// Converts the actions from array to dictionary (array of events to dictionary with deadzone + events)
 		for (KeyValue<StringName, ProjectSettings::VariantContainer> &E : props) {
@ -508,6 +532,7 @@ void ProjectSettings::_convert_to_last_version(int p_from_version) {
 			}
 		}
 	}
 #endif // DISABLE_DEPRECATED
 }
 /*
@ -548,8 +573,8 @@ Error ProjectSettings::_setup(const String &p_path, const String &p_main_pack, b
 	// Attempt with a user-defined main pack first
 	if (!p_main_pack.is_empty()) {
-		bool ok = _load_resource_pack(p_main_pack);
+		bool ok = _load_resource_pack(p_main_pack, false, 0, true);
-		ERR_FAIL_COND_V_MSG(!ok, ERR_CANT_OPEN, "Cannot open resource pack '" + p_main_pack + "'.");
+		ERR_FAIL_COND_V_MSG(!ok, ERR_CANT_OPEN, vformat("Cannot open resource pack '%s'.", p_main_pack));
 		Error err = _load_settings_text_or_binary("res://project.godot", "res://project.binary");
 		if (err == OK && !p_ignore_override) {
@ -567,7 +592,7 @@ Error ProjectSettings::_setup(const String &p_path, const String &p_main_pack, b
 		// and if so, we attempt loading it at the end.
 		// Attempt with PCK bundled into executable.
-		bool found = _load_resource_pack(exec_path);
+		bool found = _load_resource_pack(exec_path, false, 0, true);
 		// Attempt with exec_name.pck.
 		// (This is the usual case when distributing a Godot game.)
@ -583,20 +608,20 @@ Error ProjectSettings::_setup(const String &p_path, const String &p_main_pack, b
 #ifdef MACOS_ENABLED
 		if (!found) {
 			// Attempt to load PCK from macOS .app bundle resources.
-			found = _load_resource_pack(OS::get_singleton()->get_bundle_resource_dir().path_join(exec_basename + ".pck")) || _load_resource_pack(OS::get_singleton()->get_bundle_resource_dir().path_join(exec_filename + ".pck"));
+			found = _load_resource_pack(OS::get_singleton()->get_bundle_resource_dir().path_join(exec_basename + ".pck"), false, 0, true) || _load_resource_pack(OS::get_singleton()->get_bundle_resource_dir().path_join(exec_filename + ".pck"), false, 0, true);
 		}
 #endif
 		if (!found) {
 			// Try to load data pack at the location of the executable.
 			// As mentioned above, we have two potential names to attempt.
-			found = _load_resource_pack(exec_dir.path_join(exec_basename + ".pck")) || _load_resource_pack(exec_dir.path_join(exec_filename + ".pck"));
+			found = _load_resource_pack(exec_dir.path_join(exec_basename + ".pck"), false, 0, true) || _load_resource_pack(exec_dir.path_join(exec_filename + ".pck"), false, 0, true);
 		}
 		if (!found) {
 			// If we couldn't find them next to the executable, we attempt
 			// the current working directory. Same story, two tests.
-			found = _load_resource_pack(exec_basename + ".pck") || _load_resource_pack(exec_filename + ".pck");
+			found = _load_resource_pack(exec_basename + ".pck", false, 0, true) || _load_resource_pack(exec_filename + ".pck", false, 0, true);
 		}
 		// If we opened our package, try and load our project.
@ -624,11 +649,33 @@ Error ProjectSettings::_setup(const String &p_path, const String &p_main_pack, b
 		return err;
 	}
 #ifdef MACOS_ENABLED
 	// Attempt to load project file from macOS .app bundle resources.
 	resource_path = OS::get_singleton()->get_bundle_resource_dir();
 	if (!resource_path.is_empty()) {
 		if (resource_path[resource_path.length() - 1] == '/') {
 			resource_path = resource_path.substr(0, resource_path.length() - 1); // Chop end.
 		}
 		Ref<DirAccess> d = DirAccess::create(DirAccess::ACCESS_FILESYSTEM);
 		ERR_FAIL_COND_V_MSG(d.is_null(), ERR_CANT_CREATE, vformat("Cannot create DirAccess for path '%s'.", resource_path));
 		d->change_dir(resource_path);
 		Error err;
 		err = _load_settings_text_or_binary(resource_path.path_join("project.godot"), resource_path.path_join("project.binary"));
 		if (err == OK && !p_ignore_override) {
 			// Optional, we don't mind if it fails.
 			_load_settings_text(resource_path.path_join("override.cfg"));
 			return err;
 		}
 	}
 #endif
 	// Nothing was found, try to find a project file in provided path (`p_path`)
 	// or, if requested (`p_upwards`) in parent directories.
 	Ref<DirAccess> d = DirAccess::create(DirAccess::ACCESS_FILESYSTEM);
-	ERR_FAIL_COND_V_MSG(d.is_null(), ERR_CANT_CREATE, "Cannot create DirAccess for path '" + p_path + "'.");
+	ERR_FAIL_COND_V_MSG(d.is_null(), ERR_CANT_CREATE, vformat("Cannot create DirAccess for path '%s'.", p_path));
 	d->change_dir(p_path);
 	String current_dir = d->get_current_dir();
@ -724,7 +771,7 @@ Error ProjectSettings::_load_settings_binary(const String &p_path) {
 		cs[slen] = 0;
 		f->get_buffer((uint8_t *)cs.ptr(), slen);
 		String key;
-		key.parse_utf8(cs.ptr());
+		key.parse_utf8(cs.ptr(), slen);
 		uint32_t vlen = f->get_32();
 		Vector<uint8_t> d;
@ -732,7 +779,7 @@ Error ProjectSettings::_load_settings_binary(const String &p_path) {
 		f->get_buffer(d.ptrw(), vlen);
 		Variant value;
 		err = decode_variant(value, d.ptr(), d.size(), nullptr, true);
-		ERR_CONTINUE_MSG(err != OK, "Error decoding property: " + key + ".");
+		ERR_CONTINUE_MSG(err != OK, vformat("Error decoding property: '%s'.", key));
 		set(key, value);
 	}
@ -774,7 +821,7 @@ Error ProjectSettings::_load_settings_text(const String &p_path) {
 			last_save_time = FileAccess::get_modified_time(get_resource_path().path_join("project.godot"));
 			return OK;
 		}
-		ERR_FAIL_COND_V_MSG(err != OK, err, "Error parsing " + p_path + " at line " + itos(lines) + ": " + error_text + " File might be corrupted.");
+		ERR_FAIL_COND_V_MSG(err != OK, err, vformat("Error parsing '%s' at line %d: %s File might be corrupted.", p_path, lines, error_text));
 		if (!assign.is_empty()) {
 			if (section.is_empty() && assign == "config_version") {
@ -800,7 +847,7 @@ Error ProjectSettings::_load_settings_text_or_binary(const String &p_text_path,
 		return OK;
 	} else if (err != ERR_FILE_NOT_FOUND) {
 		// If the file exists but can't be loaded, we want to know it.
-		ERR_PRINT("Couldn't load file '" + p_bin_path + "', error code " + itos(err) + ".");
+		ERR_PRINT(vformat("Couldn't load file '%s', error code %d.", p_bin_path, err));
 	}
 	// Fallback to text-based project.godot file if binary was not found.
@ -808,7 +855,7 @@ Error ProjectSettings::_load_settings_text_or_binary(const String &p_text_path,
 	if (err == OK) {
 		return OK;
 	} else if (err != ERR_FILE_NOT_FOUND) {
-		ERR_PRINT("Couldn't load file '" + p_text_path + "', error code " + itos(err) + ".");
+		ERR_PRINT(vformat("Couldn't load file '%s', error code %d.", p_text_path, err));
 	}
 	return err;
@ -822,17 +869,17 @@ Error ProjectSettings::load_custom(const String &p_path) {
 }
 int ProjectSettings::get_order(const String &p_name) const {
-	ERR_FAIL_COND_V_MSG(!props.has(p_name), -1, "Request for nonexistent project setting: " + p_name + ".");
+	ERR_FAIL_COND_V_MSG(!props.has(p_name), -1, vformat("Request for nonexistent project setting: '%s'.", p_name));
 	return props[p_name].order;
 }
 void ProjectSettings::set_order(const String &p_name, int p_order) {
-	ERR_FAIL_COND_MSG(!props.has(p_name), "Request for nonexistent project setting: " + p_name + ".");
+	ERR_FAIL_COND_MSG(!props.has(p_name), vformat("Request for nonexistent project setting: '%s'.", p_name));
 	props[p_name].order = p_order;
 }
 void ProjectSettings::set_builtin_order(const String &p_name) {
-	ERR_FAIL_COND_MSG(!props.has(p_name), "Request for nonexistent project setting: " + p_name + ".");
+	ERR_FAIL_COND_MSG(!props.has(p_name), vformat("Request for nonexistent project setting: '%s'.", p_name));
 	if (props[p_name].order >= NO_BUILTIN_ORDER_BASE) {
 		props[p_name].order = last_builtin_order++;
 	}
@ -840,12 +887,12 @@ void ProjectSettings::set_builtin_order(const String &p_name) {
 bool ProjectSettings::is_builtin_setting(const String &p_name) const {
 	// Return true because a false negative is worse than a false positive.
-	ERR_FAIL_COND_V_MSG(!props.has(p_name), true, "Request for nonexistent project setting: " + p_name + ".");
+	ERR_FAIL_COND_V_MSG(!props.has(p_name), true, vformat("Request for nonexistent project setting: '%s'.", p_name));
 	return props[p_name].order < NO_BUILTIN_ORDER_BASE;
 }
 void ProjectSettings::clear(const String &p_name) {
-	ERR_FAIL_COND_MSG(!props.has(p_name), "Request for nonexistent project setting: " + p_name + ".");
+	ERR_FAIL_COND_MSG(!props.has(p_name), vformat("Request for nonexistent project setting: '%s'.", p_name));
 	props.erase(p_name);
 }
@ -860,7 +907,7 @@ Error ProjectSettings::save() {
 Error ProjectSettings::_save_settings_binary(const String &p_file, const RBMap<String, List<String>> &p_props, const CustomMap &p_custom, const String &p_custom_features) {
 	Error err;
 	Ref<FileAccess> file = FileAccess::open(p_file, FileAccess::WRITE, &err);
-	ERR_FAIL_COND_V_MSG(err != OK, err, "Couldn't save project.binary at " + p_file + ".");
+	ERR_FAIL_COND_V_MSG(err != OK, err, vformat("Couldn't save project.binary at '%s'.", p_file));
 	uint8_t hdr[4] = { 'E', 'C', 'F', 'G' };
 	file->store_buffer(hdr, 4);
@ -873,7 +920,7 @@ Error ProjectSettings::_save_settings_binary(const String &p_file, const RBMap<S
 	if (!p_custom_features.is_empty()) {
 		// Store how many properties are saved, add one for custom features, which must always go first.
-		file->store_32(count + 1);
+		file->store_32(uint32_t(count + 1));
 		String key = CoreStringName(_custom_features);
 		file->store_pascal_string(key);
@ -886,12 +933,12 @@ Error ProjectSettings::_save_settings_binary(const String &p_file, const RBMap<S
 		err = encode_variant(p_custom_features, buff.ptrw(), len, false);
 		ERR_FAIL_COND_V(err != OK, err);
-		file->store_32(len);
+		file->store_32(uint32_t(len));
 		file->store_buffer(buff.ptr(), buff.size());
 	} else {
 		// Store how many properties are saved.
-		file->store_32(count);
+		file->store_32(uint32_t(count));
 	}
 	for (const KeyValue<String, List<String>> &E : p_props) {
@ -918,7 +965,7 @@ Error ProjectSettings::_save_settings_binary(const String &p_file, const RBMap<S
 			err = encode_variant(value, buff.ptrw(), len, true);
 			ERR_FAIL_COND_V_MSG(err != OK, ERR_INVALID_DATA, "Error when trying to encode Variant.");
-			file->store_32(len);
+			file->store_32(uint32_t(len));
 			file->store_buffer(buff.ptr(), buff.size());
 		}
 	}
@ -930,7 +977,7 @@ Error ProjectSettings::_save_settings_text(const String &p_file, const RBMap<Str
 	Error err;
 	Ref<FileAccess> file = FileAccess::open(p_file, FileAccess::WRITE, &err);
-	ERR_FAIL_COND_V_MSG(err != OK, err, "Couldn't save project.godot - " + p_file + ".");
+	ERR_FAIL_COND_V_MSG(err != OK, err, vformat("Couldn't save project.godot - %s.", p_file));
 	file->store_line("; Engine configuration file.");
 	file->store_line("; It's best edited using the editor UI and not directly,");
@ -1016,7 +1063,7 @@ Error ProjectSettings::save_custom(const String &p_path, const CustomMap &p_cust
 		}
 	}
 	// Check for the existence of a csproj file.
-	if (_csproj_exists(p_path.get_base_dir())) {
+	if (_csproj_exists(get_resource_path())) {
 		// If there is a csproj file, add the C# feature if it doesn't already exist.
 		if (!project_features.has("C#")) {
 			project_features.append("C#");
@ -1076,7 +1123,7 @@ Error ProjectSettings::save_custom(const String &p_path, const CustomMap &p_cust
 		String category = E.name;
 		String name = E.name;
-		int div = category.find("/");
+		int div = category.find_char('/');
 		if (div < 0) {
 			category = "";
@ -1103,7 +1150,7 @@ Error ProjectSettings::save_custom(const String &p_path, const CustomMap &p_cust
 	} else if (p_path.ends_with(".binary")) {
 		return _save_settings_binary(p_path, save_props, p_custom, save_features);
 	} else {
-		ERR_FAIL_V_MSG(ERR_FILE_UNRECOGNIZED, "Unknown config file format: " + p_path);
+		ERR_FAIL_V_MSG(ERR_FILE_UNRECOGNIZED, vformat("Unknown config file format: '%s'.", p_path));
 	}
 }
@ -1168,22 +1215,16 @@ bool ProjectSettings::is_project_loaded() const {
 }
 bool ProjectSettings::_property_can_revert(const StringName &p_name) const {
-	if (!props.has(p_name)) {
+	return props.has(p_name);
 		return false;
 	}
 	return props[p_name].initial != props[p_name].variant;
 }
 bool ProjectSettings::_property_get_revert(const StringName &p_name, Variant &r_property) const {
-	if (!props.has(p_name)) {
+	const RBMap<StringName, ProjectSettings::VariantContainer>::Element *value = props.find(p_name);
-		return false;
+	if (value) {
 		r_property = value->value().initial.duplicate();
 		return true;
 	}
-
+	return false;
 	// Duplicate so that if value is array or dictionary, changing the setting will not change the stored initial value.
 	r_property = props[p_name].initial.duplicate();
 	return true;
 }
 void ProjectSettings::set_setting(const String &p_setting, const Variant &p_value) {
@ -1204,10 +1245,10 @@ void ProjectSettings::refresh_global_class_list() {
 	Array script_classes = get_global_class_list();
 	for (int i = 0; i < script_classes.size(); i++) {
 		Dictionary c = script_classes[i];
-		if (!c.has("class") || !c.has("language") || !c.has("path") || !c.has("base")) {
+		if (!c.has("class") || !c.has("language") || !c.has("path") || !c.has("base") || !c.has("is_abstract") || !c.has("is_tool")) {
 			continue;
 		}
-		ScriptServer::add_global_class(c["class"], c["base"], c["language"], c["path"]);
+		ScriptServer::add_global_class(c["class"], c["base"], c["language"], c["path"], c["is_abstract"], c["is_tool"]);
 	}
 }
@ -1378,7 +1419,7 @@ void ProjectSettings::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("localize_path", "path"), &ProjectSettings::localize_path);
 	ClassDB::bind_method(D_METHOD("globalize_path", "path"), &ProjectSettings::globalize_path);
 	ClassDB::bind_method(D_METHOD("save"), &ProjectSettings::save);
-	ClassDB::bind_method(D_METHOD("load_resource_pack", "pack", "replace_files", "offset"), &ProjectSettings::_load_resource_pack, DEFVAL(true), DEFVAL(0));
+	ClassDB::bind_method(D_METHOD("load_resource_pack", "pack", "replace_files", "offset"), &ProjectSettings::load_resource_pack, DEFVAL(true), DEFVAL(0));
 	ClassDB::bind_method(D_METHOD("save_custom", "file"), &ProjectSettings::_save_custom_bnd);
@ -1398,7 +1439,7 @@ void ProjectSettings::_add_builtin_input_map() {
 			}
 			Dictionary action;
-			action["deadzone"] = Variant(0.5f);
+			action["deadzone"] = Variant(InputMap::DEFAULT_DEADZONE);
 			action["events"] = events;
 			String action_name = "input/" + E.key;
@ -1467,15 +1508,12 @@ ProjectSettings::ProjectSettings() {
 	GLOBAL_DEF("display/window/size/transparent", false);
 	GLOBAL_DEF("display/window/size/extend_to_title", false);
 	GLOBAL_DEF("display/window/size/no_focus", false);
 	GLOBAL_DEF("display/window/size/sharp_corners", false);
 	GLOBAL_DEF(PropertyInfo(Variant::INT, "display/window/size/window_width_override", PROPERTY_HINT_RANGE, "0,7680,1,or_greater"), 0); // 8K resolution
 	GLOBAL_DEF(PropertyInfo(Variant::INT, "display/window/size/window_height_override", PROPERTY_HINT_RANGE, "0,4320,1,or_greater"), 0); // 8K resolution
 	GLOBAL_DEF("display/window/energy_saving/keep_screen_on", true);
 #ifdef TOOLS_ENABLED
 	GLOBAL_DEF("display/window/energy_saving/keep_screen_on.editor_hint", false);
 #endif
 	GLOBAL_DEF("animation/warnings/check_invalid_track_paths", true);
 	GLOBAL_DEF("animation/warnings/check_angle_interpolation_type_conflicting", true);
@ -1489,15 +1527,6 @@ ProjectSettings::ProjectSettings() {
 	GLOBAL_DEF(PropertyInfo(Variant::INT, "audio/general/ios/session_category", PROPERTY_HINT_ENUM, "Ambient,Multi Route,Play and Record,Playback,Record,Solo Ambient"), 0);
 	GLOBAL_DEF("audio/general/ios/mix_with_others", false);
 	PackedStringArray extensions;
 	extensions.push_back("gd");
 	if (ClassDB::class_exists("CSharpScript")) {
 		extensions.push_back("cs");
 	}
 	extensions.push_back("gdshader");
 	GLOBAL_DEF(PropertyInfo(Variant::PACKED_STRING_ARRAY, "editor/script/search_in_file_extensions"), extensions);
 	_add_builtin_input_map();
 	// Keep the enum values in sync with the `DisplayServer::ScreenOrientation` enum.
@ -1505,7 +1534,15 @@ ProjectSettings::ProjectSettings() {
 	GLOBAL_DEF("display/window/subwindows/embed_subwindows", true);
 	// Keep the enum values in sync with the `DisplayServer::VSyncMode` enum.
 	custom_prop_info["display/window/vsync/vsync_mode"] = PropertyInfo(Variant::INT, "display/window/vsync/vsync_mode", PROPERTY_HINT_ENUM, "Disabled,Enabled,Adaptive,Mailbox");
-	custom_prop_info["rendering/driver/threads/thread_model"] = PropertyInfo(Variant::INT, "rendering/driver/threads/thread_model", PROPERTY_HINT_ENUM, "Single-Unsafe,Single-Safe,Multi-Threaded");
+
 	GLOBAL_DEF("display/window/frame_pacing/android/enable_frame_pacing", true);
 	GLOBAL_DEF(PropertyInfo(Variant::INT, "display/window/frame_pacing/android/swappy_mode", PROPERTY_HINT_ENUM, "pipeline_forced_on,auto_fps_pipeline_forced_on,auto_fps_auto_pipeline"), 2);
 #ifdef DISABLE_DEPRECATED
 	custom_prop_info["rendering/driver/threads/thread_model"] = PropertyInfo(Variant::INT, "rendering/driver/threads/thread_model", PROPERTY_HINT_ENUM, "Safe:1,Separate");
 #else
 	custom_prop_info["rendering/driver/threads/thread_model"] = PropertyInfo(Variant::INT, "rendering/driver/threads/thread_model", PROPERTY_HINT_ENUM, "Unsafe (deprecated),Safe,Separate");
 #endif
 	GLOBAL_DEF("physics/2d/run_on_separate_thread", false);
 	GLOBAL_DEF("physics/3d/run_on_separate_thread", false);
@ -1548,6 +1585,7 @@ ProjectSettings::ProjectSettings() {
 	GLOBAL_DEF(PropertyInfo(Variant::INT, "rendering/rendering_device/staging_buffer/block_size_kb", PROPERTY_HINT_RANGE, "4,2048,1,or_greater"), 256);
 	GLOBAL_DEF(PropertyInfo(Variant::INT, "rendering/rendering_device/staging_buffer/max_size_mb", PROPERTY_HINT_RANGE, "1,1024,1,or_greater"), 128);
 	GLOBAL_DEF(PropertyInfo(Variant::INT, "rendering/rendering_device/staging_buffer/texture_upload_region_size_px", PROPERTY_HINT_RANGE, "1,256,1,or_greater"), 64);
 	GLOBAL_DEF(PropertyInfo(Variant::INT, "rendering/rendering_device/staging_buffer/texture_download_region_size_px", PROPERTY_HINT_RANGE, "1,256,1,or_greater"), 64);
 	GLOBAL_DEF_RST(PropertyInfo(Variant::BOOL, "rendering/rendering_device/pipeline_cache/enable"), true);
 	GLOBAL_DEF(PropertyInfo(Variant::FLOAT, "rendering/rendering_device/pipeline_cache/save_chunk_size_mb", PROPERTY_HINT_RANGE, "0.000001,64.0,0.001,or_greater"), 3.0);
 	GLOBAL_DEF(PropertyInfo(Variant::INT, "rendering/rendering_device/vulkan/max_descriptors_per_pool", PROPERTY_HINT_RANGE, "1,256,1,or_greater"), 64);
@ -1563,13 +1601,18 @@ ProjectSettings::ProjectSettings() {
 	// installed by the scripts provided in the repository
 	// (check `misc/scripts/install_d3d12_sdk_windows.py`).
 	// For example, if the script installs 1.613.3, the default value must be 613.
-	GLOBAL_DEF_RST(PropertyInfo(Variant::INT, "rendering/rendering_device/d3d12/agility_sdk_version"), 613);
+	GLOBAL_DEF_RST(PropertyInfo(Variant::INT, "rendering/rendering_device/d3d12/agility_sdk_version", PROPERTY_HINT_RANGE, "0,10000,1,or_greater,hide_slider"), 613);
 	GLOBAL_DEF_BASIC(PropertyInfo(Variant::INT, "rendering/textures/canvas_textures/default_texture_filter", PROPERTY_HINT_ENUM, "Nearest,Linear,Linear Mipmap,Nearest Mipmap"), 1);
 	GLOBAL_DEF_BASIC(PropertyInfo(Variant::INT, "rendering/textures/canvas_textures/default_texture_repeat", PROPERTY_HINT_ENUM, "Disable,Enable,Mirror"), 0);
 	GLOBAL_DEF("collada/use_ambient", false);
 	// Input settings
 	GLOBAL_DEF_BASIC("input_devices/pointing/android/enable_long_press_as_right_click", false);
 	GLOBAL_DEF_BASIC("input_devices/pointing/android/enable_pan_and_scale_gestures", false);
 	GLOBAL_DEF_BASIC(PropertyInfo(Variant::INT, "input_devices/pointing/android/rotary_input_scroll_axis", PROPERTY_HINT_ENUM, "Horizontal,Vertical"), 1);
 	// These properties will not show up in the dialog. If you want to exclude whole groups, use add_hidden_prefix().
 	GLOBAL_DEF_INTERNAL("application/config/features", PackedStringArray());
 	GLOBAL_DEF_INTERNAL("internationalization/locale/translation_remaps", PackedStringArray());
@ -1582,6 +1625,7 @@ ProjectSettings::ProjectSettings() {
 ProjectSettings::ProjectSettings(const String &p_path) {
 	if (load_custom(p_path) == OK) {
 		resource_path = p_path.get_base_dir();
 		project_loaded = true;
 	}
 }
--- a/engine/core/config/project_settings.h
+++ b/engine/core/config/project_settings.h
@ -47,10 +47,8 @@ public:
 	typedef HashMap<String, Variant> CustomMap;
 	static const String PROJECT_DATA_DIR_NAME_SUFFIX;
-	enum {
+	// Properties that are not for built in values begin from this value, so builtin ones are displayed first.
-		// Properties that are not for built in values begin from this value, so builtin ones are displayed first.
+	constexpr static const int32_t NO_BUILTIN_ORDER_BASE = 1 << 16;
 		NO_BUILTIN_ORDER_BASE = 1 << 16
 	};
 #ifdef TOOLS_ENABLED
 	const static PackedStringArray get_required_features();
@ -137,7 +135,8 @@ protected:
 	void _convert_to_last_version(int p_from_version);
-	bool _load_resource_pack(const String &p_pack, bool p_replace_files = true, int p_offset = 0);
+	bool load_resource_pack(const String &p_pack, bool p_replace_files, int p_offset);
 	bool _load_resource_pack(const String &p_pack, bool p_replace_files = true, int p_offset = 0, bool p_main_pack = false);
 	void _add_property_info_bind(const Dictionary &p_info);
--- a/engine/core/core_bind.compat.inc
+++ b/engine/core/core_bind.compat.inc
@ -0,0 +1,62 @@
 /**************************************************************************/
 /*  core_bind.compat.inc                                                  */
 /**************************************************************************/
 /*                         This file is part of:                          */
 /*                             GODOT ENGINE                               */
 /*                        https://godotengine.org                         */
 /**************************************************************************/
 /* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
 /* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
 /*                                                                        */
 /* Permission is hereby granted, free of charge, to any person obtaining  */
 /* a copy of this software and associated documentation files (the        */
 /* "Software"), to deal in the Software without restriction, including    */
 /* without limitation the rights to use, copy, modify, merge, publish,    */
 /* distribute, sublicense, and/or sell copies of the Software, and to     */
 /* permit persons to whom the Software is furnished to do so, subject to  */
 /* the following conditions:                                              */
 /*                                                                        */
 /* The above copyright notice and this permission notice shall be         */
 /* included in all copies or substantial portions of the Software.        */
 /*                                                                        */
 /* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
 /* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
 /* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
 /* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
 /* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
 /* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
 /**************************************************************************/
 #ifndef DISABLE_DEPRECATED
 namespace core_bind {
 // Semaphore
 void Semaphore::_post_bind_compat_93605() {
 	post(1);
 }
 void Semaphore::_bind_compatibility_methods() {
 	ClassDB::bind_compatibility_method(D_METHOD("post"), &Semaphore::_post_bind_compat_93605);
 }
 // OS
 String OS::_read_string_from_stdin_bind_compat_91201() {
 	return read_string_from_stdin(1024);
 }
 Dictionary OS::_execute_with_pipe_bind_compat_94434(const String &p_path, const Vector<String> &p_arguments) {
 	return execute_with_pipe(p_path, p_arguments, true);
 }
 void OS::_bind_compatibility_methods() {
 	ClassDB::bind_compatibility_method(D_METHOD("read_string_from_stdin"), &OS::_read_string_from_stdin_bind_compat_91201);
 	ClassDB::bind_compatibility_method(D_METHOD("execute_with_pipe", "path", "arguments"), &OS::_execute_with_pipe_bind_compat_94434);
 }
 } // namespace core_bind
 #endif // DISABLE_DEPRECATED
--- a/engine/core/core_bind.cpp
+++ b/engine/core/core_bind.cpp
@ -29,13 +29,12 @@
 /**************************************************************************/
 #include "core_bind.h"
 #include "core_bind.compat.inc"
 #include "core/config/project_settings.h"
 #include "core/crypto/crypto_core.h"
 #include "core/debugger/engine_debugger.h"
 #include "core/debugger/script_debugger.h"
 #include "core/io/file_access_compressed.h"
 #include "core/io/file_access_encrypted.h"
 #include "core/io/marshalls.h"
 #include "core/math/geometry_2d.h"
 #include "core/math/geometry_3d.h"
@ -56,8 +55,11 @@ Error ResourceLoader::load_threaded_request(const String &p_path, const String &
 ResourceLoader::ThreadLoadStatus ResourceLoader::load_threaded_get_status(const String &p_path, Array r_progress) {
 	float progress = 0;
 	::ResourceLoader::ThreadLoadStatus tls = ::ResourceLoader::load_threaded_get_status(p_path, &progress);
-	r_progress.resize(1);
+	// Default array should never be modified, it causes the hash of the method to change.
-	r_progress[0] = progress;
+	if (!ClassDB::is_default_array_arg(r_progress)) {
 		r_progress.resize(1);
 		r_progress[0] = progress;
 	}
 	return (ThreadLoadStatus)tls;
 }
@ -71,7 +73,7 @@ Ref<Resource> ResourceLoader::load(const String &p_path, const String &p_type_hi
 	Error err = OK;
 	Ref<Resource> ret = ::ResourceLoader::load(p_path, p_type_hint, ResourceFormatLoader::CacheMode(p_cache_mode), &err);
-	ERR_FAIL_COND_V_MSG(err != OK, ret, "Error loading resource: '" + p_path + "'.");
+	ERR_FAIL_COND_V_MSG(err != OK, ret, vformat("Error loading resource: '%s'.", p_path));
 	return ret;
 }
@ -111,10 +113,15 @@ PackedStringArray ResourceLoader::get_dependencies(const String &p_path) {
 }
 bool ResourceLoader::has_cached(const String &p_path) {
-	String local_path = ProjectSettings::get_singleton()->localize_path(p_path);
+	String local_path = ::ResourceLoader::_validate_local_path(p_path);
 	return ResourceCache::has(local_path);
 }
 Ref<Resource> ResourceLoader::get_cached_ref(const String &p_path) {
 	String local_path = ::ResourceLoader::_validate_local_path(p_path);
 	return ResourceCache::get_ref(local_path);
 }
 bool ResourceLoader::exists(const String &p_path, const String &p_type_hint) {
 	return ::ResourceLoader::exists(p_path, p_type_hint);
 }
@ -123,9 +130,13 @@ ResourceUID::ID ResourceLoader::get_resource_uid(const String &p_path) {
 	return ::ResourceLoader::get_resource_uid(p_path);
 }
 Vector<String> ResourceLoader::list_directory(const String &p_directory) {
 	return ::ResourceLoader::list_directory(p_directory);
 }
 void ResourceLoader::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("load_threaded_request", "path", "type_hint", "use_sub_threads", "cache_mode"), &ResourceLoader::load_threaded_request, DEFVAL(""), DEFVAL(false), DEFVAL(CACHE_MODE_REUSE));
-	ClassDB::bind_method(D_METHOD("load_threaded_get_status", "path", "progress"), &ResourceLoader::load_threaded_get_status, DEFVAL(Array()));
+	ClassDB::bind_method(D_METHOD("load_threaded_get_status", "path", "progress"), &ResourceLoader::load_threaded_get_status, DEFVAL_ARRAY);
 	ClassDB::bind_method(D_METHOD("load_threaded_get", "path"), &ResourceLoader::load_threaded_get);
 	ClassDB::bind_method(D_METHOD("load", "path", "type_hint", "cache_mode"), &ResourceLoader::load, DEFVAL(""), DEFVAL(CACHE_MODE_REUSE));
@ -135,8 +146,10 @@ void ResourceLoader::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("set_abort_on_missing_resources", "abort"), &ResourceLoader::set_abort_on_missing_resources);
 	ClassDB::bind_method(D_METHOD("get_dependencies", "path"), &ResourceLoader::get_dependencies);
 	ClassDB::bind_method(D_METHOD("has_cached", "path"), &ResourceLoader::has_cached);
 	ClassDB::bind_method(D_METHOD("get_cached_ref", "path"), &ResourceLoader::get_cached_ref);
 	ClassDB::bind_method(D_METHOD("exists", "path", "type_hint"), &ResourceLoader::exists, DEFVAL(""));
 	ClassDB::bind_method(D_METHOD("get_resource_uid", "path"), &ResourceLoader::get_resource_uid);
 	ClassDB::bind_method(D_METHOD("list_directory", "directory_path"), &ResourceLoader::list_directory);
 	BIND_ENUM_CONSTANT(THREAD_LOAD_INVALID_RESOURCE);
 	BIND_ENUM_CONSTANT(THREAD_LOAD_IN_PROGRESS);
@ -174,6 +187,10 @@ void ResourceSaver::remove_resource_format_saver(Ref<ResourceFormatSaver> p_form
 	::ResourceSaver::remove_resource_format_saver(p_format_saver);
 }
 ResourceUID::ID ResourceSaver::get_resource_id_for_path(const String &p_path, bool p_generate) {
 	return ::ResourceSaver::get_resource_id_for_path(p_path, p_generate);
 }
 ResourceSaver *ResourceSaver::singleton = nullptr;
 void ResourceSaver::_bind_methods() {
@ -181,6 +198,7 @@ void ResourceSaver::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("get_recognized_extensions", "type"), &ResourceSaver::get_recognized_extensions);
 	ClassDB::bind_method(D_METHOD("add_resource_format_saver", "format_saver", "at_front"), &ResourceSaver::add_resource_format_saver, DEFVAL(false));
 	ClassDB::bind_method(D_METHOD("remove_resource_format_saver", "format_saver"), &ResourceSaver::remove_resource_format_saver);
 	ClassDB::bind_method(D_METHOD("get_resource_id_for_path", "path", "generate"), &ResourceSaver::get_resource_id_for_path, DEFVAL(false));
 	BIND_BITFIELD_FLAG(FLAG_NONE);
 	BIND_BITFIELD_FLAG(FLAG_RELATIVE_PATHS);
@ -288,8 +306,24 @@ Error OS::shell_show_in_file_manager(const String &p_path, bool p_open_folder) {
 	return ::OS::get_singleton()->shell_show_in_file_manager(p_path, p_open_folder);
 }
-String OS::read_string_from_stdin() {
+String OS::read_string_from_stdin(int64_t p_buffer_size) {
-	return ::OS::get_singleton()->get_stdin_string();
+	return ::OS::get_singleton()->get_stdin_string(p_buffer_size);
 }
 PackedByteArray OS::read_buffer_from_stdin(int64_t p_buffer_size) {
 	return ::OS::get_singleton()->get_stdin_buffer(p_buffer_size);
 }
 OS::StdHandleType OS::get_stdin_type() const {
 	return (OS::StdHandleType)::OS::get_singleton()->get_stdin_type();
 }
 OS::StdHandleType OS::get_stdout_type() const {
 	return (OS::StdHandleType)::OS::get_singleton()->get_stdout_type();
 }
 OS::StdHandleType OS::get_stderr_type() const {
 	return (OS::StdHandleType)::OS::get_singleton()->get_stderr_type();
 }
 int OS::execute(const String &p_path, const Vector<String> &p_arguments, Array r_output, bool p_read_stderr, bool p_open_console) {
@ -300,19 +334,22 @@ int OS::execute(const String &p_path, const Vector<String> &p_arguments, Array r
 	String pipe;
 	int exitcode = 0;
 	Error err = ::OS::get_singleton()->execute(p_path, args, &pipe, &exitcode, p_read_stderr, nullptr, p_open_console);
-	r_output.push_back(pipe);
+	// Default array should never be modified, it causes the hash of the method to change.
 	if (!ClassDB::is_default_array_arg(r_output)) {
 		r_output.push_back(pipe);
 	}
 	if (err != OK) {
 		return -1;
 	}
 	return exitcode;
 }
-Dictionary OS::execute_with_pipe(const String &p_path, const Vector<String> &p_arguments) {
+Dictionary OS::execute_with_pipe(const String &p_path, const Vector<String> &p_arguments, bool p_blocking) {
 	List<String> args;
 	for (const String &arg : p_arguments) {
 		args.push_back(arg);
 	}
-	return ::OS::get_singleton()->execute_with_pipe(p_path, args);
+	return ::OS::get_singleton()->execute_with_pipe(p_path, args, p_blocking);
 }
 int OS::create_instance(const Vector<String> &p_arguments) {
@ -385,6 +422,10 @@ String OS::get_version() const {
 	return ::OS::get_singleton()->get_version();
 }
 String OS::get_version_alias() const {
 	return ::OS::get_singleton()->get_version_alias();
 }
 Vector<String> OS::get_video_adapter_driver_info() const {
 	return ::OS::get_singleton()->get_video_adapter_driver_info();
 }
@ -450,11 +491,11 @@ Error OS::set_thread_name(const String &p_name) {
 ::Thread::ID OS::get_thread_caller_id() const {
 	return ::Thread::get_caller_id();
-};
+}
 ::Thread::ID OS::get_main_thread_id() const {
 	return ::Thread::get_main_id();
-};
+}
 bool OS::has_feature(const String &p_feature) const {
 	const bool *value_ptr = feature_cache.getptr(p_feature);
@ -538,6 +579,11 @@ String OS::get_cache_dir() const {
 	return ::OS::get_singleton()->get_cache_path();
 }
 String OS::get_temp_dir() const {
 	// Exposed as `get_temp_dir()` instead of `get_temp_path()` for consistency with other exposed OS methods.
 	return ::OS::get_singleton()->get_temp_path();
 }
 bool OS::is_debug_build() const {
 #ifdef DEBUG_ENABLED
 	return true;
@ -610,9 +656,15 @@ void OS::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("get_system_font_path", "font_name", "weight", "stretch", "italic"), &OS::get_system_font_path, DEFVAL(400), DEFVAL(100), DEFVAL(false));
 	ClassDB::bind_method(D_METHOD("get_system_font_path_for_text", "font_name", "text", "locale", "script", "weight", "stretch", "italic"), &OS::get_system_font_path_for_text, DEFVAL(String()), DEFVAL(String()), DEFVAL(400), DEFVAL(100), DEFVAL(false));
 	ClassDB::bind_method(D_METHOD("get_executable_path"), &OS::get_executable_path);
-	ClassDB::bind_method(D_METHOD("read_string_from_stdin"), &OS::read_string_from_stdin);
+
-	ClassDB::bind_method(D_METHOD("execute", "path", "arguments", "output", "read_stderr", "open_console"), &OS::execute, DEFVAL(Array()), DEFVAL(false), DEFVAL(false));
+	ClassDB::bind_method(D_METHOD("read_string_from_stdin", "buffer_size"), &OS::read_string_from_stdin);
-	ClassDB::bind_method(D_METHOD("execute_with_pipe", "path", "arguments"), &OS::execute_with_pipe);
+	ClassDB::bind_method(D_METHOD("read_buffer_from_stdin", "buffer_size"), &OS::read_buffer_from_stdin);
 	ClassDB::bind_method(D_METHOD("get_stdin_type"), &OS::get_stdin_type);
 	ClassDB::bind_method(D_METHOD("get_stdout_type"), &OS::get_stdout_type);
 	ClassDB::bind_method(D_METHOD("get_stderr_type"), &OS::get_stderr_type);
 	ClassDB::bind_method(D_METHOD("execute", "path", "arguments", "output", "read_stderr", "open_console"), &OS::execute, DEFVAL_ARRAY, DEFVAL(false), DEFVAL(false));
 	ClassDB::bind_method(D_METHOD("execute_with_pipe", "path", "arguments", "blocking"), &OS::execute_with_pipe, DEFVAL(true));
 	ClassDB::bind_method(D_METHOD("create_process", "path", "arguments", "open_console"), &OS::create_process, DEFVAL(false));
 	ClassDB::bind_method(D_METHOD("create_instance", "arguments"), &OS::create_instance);
 	ClassDB::bind_method(D_METHOD("kill", "pid"), &OS::kill);
@ -630,6 +682,7 @@ void OS::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("get_name"), &OS::get_name);
 	ClassDB::bind_method(D_METHOD("get_distribution_name"), &OS::get_distribution_name);
 	ClassDB::bind_method(D_METHOD("get_version"), &OS::get_version);
 	ClassDB::bind_method(D_METHOD("get_version_alias"), &OS::get_version_alias);
 	ClassDB::bind_method(D_METHOD("get_cmdline_args"), &OS::get_cmdline_args);
 	ClassDB::bind_method(D_METHOD("get_cmdline_user_args"), &OS::get_cmdline_user_args);
@ -660,6 +713,7 @@ void OS::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("get_config_dir"), &OS::get_config_dir);
 	ClassDB::bind_method(D_METHOD("get_data_dir"), &OS::get_data_dir);
 	ClassDB::bind_method(D_METHOD("get_cache_dir"), &OS::get_cache_dir);
 	ClassDB::bind_method(D_METHOD("get_temp_dir"), &OS::get_temp_dir);
 	ClassDB::bind_method(D_METHOD("get_unique_id"), &OS::get_unique_id);
 	ClassDB::bind_method(D_METHOD("get_keycode_string", "code"), &OS::get_keycode_string);
@ -692,6 +746,7 @@ void OS::_bind_methods() {
 	BIND_ENUM_CONSTANT(RENDERING_DRIVER_VULKAN);
 	BIND_ENUM_CONSTANT(RENDERING_DRIVER_OPENGL3);
 	BIND_ENUM_CONSTANT(RENDERING_DRIVER_D3D12);
 	BIND_ENUM_CONSTANT(RENDERING_DRIVER_METAL);
 	BIND_ENUM_CONSTANT(SYSTEM_DIR_DESKTOP);
 	BIND_ENUM_CONSTANT(SYSTEM_DIR_DCIM);
@ -701,6 +756,12 @@ void OS::_bind_methods() {
 	BIND_ENUM_CONSTANT(SYSTEM_DIR_MUSIC);
 	BIND_ENUM_CONSTANT(SYSTEM_DIR_PICTURES);
 	BIND_ENUM_CONSTANT(SYSTEM_DIR_RINGTONES);
 	BIND_ENUM_CONSTANT(STD_HANDLE_INVALID);
 	BIND_ENUM_CONSTANT(STD_HANDLE_CONSOLE);
 	BIND_ENUM_CONSTANT(STD_HANDLE_FILE);
 	BIND_ENUM_CONSTANT(STD_HANDLE_PIPE);
 	BIND_ENUM_CONSTANT(STD_HANDLE_UNKNOWN);
 }
 ////// Geometry2D //////
@ -901,6 +962,19 @@ Dictionary Geometry2D::make_atlas(const Vector<Size2> &p_rects) {
 	return ret;
 }
 TypedArray<Point2i> Geometry2D::bresenham_line(const Point2i &p_from, const Point2i &p_to) {
 	Vector<Point2i> points = ::Geometry2D::bresenham_line(p_from, p_to);
 	TypedArray<Point2i> result;
 	result.resize(points.size());
 	for (int i = 0; i < points.size(); i++) {
 		result[i] = points[i];
 	}
 	return result;
 }
 void Geometry2D::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("is_point_in_circle", "point", "circle_position", "circle_radius"), &Geometry2D::is_point_in_circle);
 	ClassDB::bind_method(D_METHOD("segment_intersects_circle", "segment_from", "segment_to", "circle_position", "circle_radius"), &Geometry2D::segment_intersects_circle);
@ -935,6 +1009,8 @@ void Geometry2D::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("make_atlas", "sizes"), &Geometry2D::make_atlas);
 	ClassDB::bind_method(D_METHOD("bresenham_line", "from", "to"), &Geometry2D::bresenham_line);
 	BIND_ENUM_CONSTANT(OPERATION_UNION);
 	BIND_ENUM_CONSTANT(OPERATION_DIFFERENCE);
 	BIND_ENUM_CONSTANT(OPERATION_INTERSECTION);
@ -1209,14 +1285,15 @@ bool Semaphore::try_wait() {
 	return semaphore.try_wait();
 }
-void Semaphore::post() {
+void Semaphore::post(int p_count) {
-	semaphore.post();
+	ERR_FAIL_COND(p_count <= 0);
 	semaphore.post(p_count);
 }
 void Semaphore::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("wait"), &Semaphore::wait);
 	ClassDB::bind_method(D_METHOD("try_wait"), &Semaphore::try_wait);
-	ClassDB::bind_method(D_METHOD("post"), &Semaphore::post);
+	ClassDB::bind_method(D_METHOD("post", "count"), &Semaphore::post, DEFVAL(1));
 }
 ////// Mutex //////
@ -1280,7 +1357,7 @@ void Thread::_start_func(void *ud) {
 	}
 	if (ce.error != Callable::CallError::CALL_OK) {
-		ERR_FAIL_MSG("Could not call function '" + func_name + "' to start thread " + t->get_id() + ": " + Variant::get_callable_error_text(t->target_callable, nullptr, 0, ce) + ".");
+		ERR_FAIL_MSG(vformat("Could not call function '%s' to start thread %d: %s.", func_name, t->get_id(), Variant::get_callable_error_text(t->target_callable, nullptr, 0, ce)));
 	}
 }
@ -1404,6 +1481,11 @@ Variant ClassDB::instantiate(const StringName &p_class) const {
 	}
 }
 ClassDB::APIType ClassDB::class_get_api_type(const StringName &p_class) const {
 	::ClassDB::APIType api_type = ::ClassDB::get_api_type(p_class);
 	return (APIType)api_type;
 }
 bool ClassDB::class_has_signal(const StringName &p_class, const StringName &p_signal) const {
 	return ::ClassDB::has_signal(p_class, p_signal);
 }
@ -1440,6 +1522,14 @@ TypedArray<Dictionary> ClassDB::class_get_property_list(const StringName &p_clas
 	return ret;
 }
 StringName ClassDB::class_get_property_getter(const StringName &p_class, const StringName &p_property) {
 	return ::ClassDB::get_property_getter(p_class, p_property);
 }
 StringName ClassDB::class_get_property_setter(const StringName &p_class, const StringName &p_property) {
 	return ::ClassDB::get_property_setter(p_class, p_property);
 }
 Variant ClassDB::class_get_property(Object *p_object, const StringName &p_property) const {
 	Variant ret;
 	::ClassDB::get_property(p_object, p_property, ret);
@ -1492,6 +1582,23 @@ TypedArray<Dictionary> ClassDB::class_get_method_list(const StringName &p_class,
 	return ret;
 }
 Variant ClassDB::class_call_static(const Variant **p_arguments, int p_argcount, Callable::CallError &r_call_error) {
 	if (p_argcount < 2) {
 		r_call_error.error = Callable::CallError::CALL_ERROR_TOO_FEW_ARGUMENTS;
 		return Variant::NIL;
 	}
 	if (!p_arguments[0]->is_string() || !p_arguments[1]->is_string()) {
 		r_call_error.error = Callable::CallError::CALL_ERROR_INVALID_ARGUMENT;
 		return Variant::NIL;
 	}
 	StringName class_ = *p_arguments[0];
 	StringName method = *p_arguments[1];
 	const MethodBind *bind = ::ClassDB::get_method(class_, method);
 	ERR_FAIL_NULL_V_MSG(bind, Variant::NIL, "Cannot find static method.");
 	ERR_FAIL_COND_V_MSG(!bind->is_static(), Variant::NIL, "Method is not static.");
 	return bind->call(nullptr, p_arguments + 2, p_argcount - 2, r_call_error);
 }
 PackedStringArray ClassDB::class_get_integer_constant_list(const StringName &p_class, bool p_no_inheritance) const {
 	List<String> constants;
 	::ClassDB::get_integer_constant_list(p_class, &constants, p_no_inheritance);
@ -1575,7 +1682,7 @@ void ClassDB::get_argument_options(const StringName &p_function, int p_idx, List
 				pf == "class_has_method" || pf == "class_get_method_list" ||
 				pf == "class_get_integer_constant_list" || pf == "class_has_integer_constant" || pf == "class_get_integer_constant" ||
 				pf == "class_has_enum" || pf == "class_get_enum_list" || pf == "class_get_enum_constants" || pf == "class_get_integer_constant_enum" ||
-				pf == "is_class_enabled" || pf == "is_class_enum_bitfield");
+				pf == "is_class_enabled" || pf == "is_class_enum_bitfield" || pf == "class_get_api_type");
 	}
 	if (first_argument_is_class || pf == "is_parent_class") {
 		for (const String &E : get_class_list()) {
@ -1596,11 +1703,15 @@ void ClassDB::_bind_methods() {
 	::ClassDB::bind_method(D_METHOD("can_instantiate", "class"), &ClassDB::can_instantiate);
 	::ClassDB::bind_method(D_METHOD("instantiate", "class"), &ClassDB::instantiate);
 	::ClassDB::bind_method(D_METHOD("class_get_api_type", "class"), &ClassDB::class_get_api_type);
 	::ClassDB::bind_method(D_METHOD("class_has_signal", "class", "signal"), &ClassDB::class_has_signal);
 	::ClassDB::bind_method(D_METHOD("class_get_signal", "class", "signal"), &ClassDB::class_get_signal);
 	::ClassDB::bind_method(D_METHOD("class_get_signal_list", "class", "no_inheritance"), &ClassDB::class_get_signal_list, DEFVAL(false));
 	::ClassDB::bind_method(D_METHOD("class_get_property_list", "class", "no_inheritance"), &ClassDB::class_get_property_list, DEFVAL(false));
 	::ClassDB::bind_method(D_METHOD("class_get_property_getter", "class", "property"), &ClassDB::class_get_property_getter);
 	::ClassDB::bind_method(D_METHOD("class_get_property_setter", "class", "property"), &ClassDB::class_get_property_setter);
 	::ClassDB::bind_method(D_METHOD("class_get_property", "object", "property"), &ClassDB::class_get_property);
 	::ClassDB::bind_method(D_METHOD("class_set_property", "object", "property", "value"), &ClassDB::class_set_property);
@ -1612,6 +1723,8 @@ void ClassDB::_bind_methods() {
 	::ClassDB::bind_method(D_METHOD("class_get_method_list", "class", "no_inheritance"), &ClassDB::class_get_method_list, DEFVAL(false));
 	::ClassDB::bind_vararg_method(METHOD_FLAGS_DEFAULT, "class_call_static", &ClassDB::class_call_static, MethodInfo("class_call_static", PropertyInfo(Variant::STRING_NAME, "class"), PropertyInfo(Variant::STRING_NAME, "method")));
 	::ClassDB::bind_method(D_METHOD("class_get_integer_constant_list", "class", "no_inheritance"), &ClassDB::class_get_integer_constant_list, DEFVAL(false));
 	::ClassDB::bind_method(D_METHOD("class_has_integer_constant", "class", "name"), &ClassDB::class_has_integer_constant);
@ -1625,6 +1738,12 @@ void ClassDB::_bind_methods() {
 	::ClassDB::bind_method(D_METHOD("is_class_enum_bitfield", "class", "enum", "no_inheritance"), &ClassDB::is_class_enum_bitfield, DEFVAL(false));
 	::ClassDB::bind_method(D_METHOD("is_class_enabled", "class"), &ClassDB::is_class_enabled);
 	BIND_ENUM_CONSTANT(API_CORE);
 	BIND_ENUM_CONSTANT(API_EDITOR);
 	BIND_ENUM_CONSTANT(API_EXTENSION);
 	BIND_ENUM_CONSTANT(API_EDITOR_EXTENSION);
 	BIND_ENUM_CONSTANT(API_NONE);
 }
 } // namespace special
@ -1737,8 +1856,8 @@ Object *Engine::get_singleton_object(const StringName &p_name) const {
 }
 void Engine::register_singleton(const StringName &p_name, Object *p_object) {
-	ERR_FAIL_COND_MSG(has_singleton(p_name), "Singleton already registered: " + String(p_name));
+	ERR_FAIL_COND_MSG(has_singleton(p_name), vformat("Singleton already registered: '%s'.", String(p_name)));
-	ERR_FAIL_COND_MSG(!String(p_name).is_valid_identifier(), "Singleton name is not a valid identifier: " + p_name);
+	ERR_FAIL_COND_MSG(!String(p_name).is_valid_ascii_identifier(), vformat("Singleton name is not a valid identifier: '%s'.", p_name));
 	::Engine::Singleton s;
 	s.class_name = p_name;
 	s.name = p_name;
@ -1748,8 +1867,8 @@ void Engine::register_singleton(const StringName &p_name, Object *p_object) {
 }
 void Engine::unregister_singleton(const StringName &p_name) {
-	ERR_FAIL_COND_MSG(!has_singleton(p_name), "Attempt to remove unregistered singleton: " + String(p_name));
+	ERR_FAIL_COND_MSG(!has_singleton(p_name), vformat("Attempt to remove unregistered singleton: '%s'.", String(p_name)));
-	ERR_FAIL_COND_MSG(!::Engine::get_singleton()->is_singleton_user_created(p_name), "Attempt to remove non-user created singleton: " + String(p_name));
+	ERR_FAIL_COND_MSG(!::Engine::get_singleton()->is_singleton_user_created(p_name), vformat("Attempt to remove non-user created singleton: '%s'.", String(p_name)));
 	::Engine::get_singleton()->remove_singleton(p_name);
 }
@ -1787,10 +1906,22 @@ bool Engine::is_editor_hint() const {
 	return ::Engine::get_singleton()->is_editor_hint();
 }
 bool Engine::is_embedded_in_editor() const {
 	return ::Engine::get_singleton()->is_embedded_in_editor();
 }
 String Engine::get_write_movie_path() const {
 	return ::Engine::get_singleton()->get_write_movie_path();
 }
 void Engine::set_print_to_stdout(bool p_enabled) {
 	::Engine::get_singleton()->set_print_to_stdout(p_enabled);
 }
 bool Engine::is_printing_to_stdout() const {
 	return ::Engine::get_singleton()->is_printing_to_stdout();
 }
 void Engine::set_print_error_messages(bool p_enabled) {
 	::Engine::get_singleton()->set_print_error_messages(p_enabled);
 }
@ -1856,13 +1987,18 @@ void Engine::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("get_script_language", "index"), &Engine::get_script_language);
 	ClassDB::bind_method(D_METHOD("is_editor_hint"), &Engine::is_editor_hint);
 	ClassDB::bind_method(D_METHOD("is_embedded_in_editor"), &Engine::is_embedded_in_editor);
 	ClassDB::bind_method(D_METHOD("get_write_movie_path"), &Engine::get_write_movie_path);
 	ClassDB::bind_method(D_METHOD("set_print_to_stdout", "enabled"), &Engine::set_print_to_stdout);
 	ClassDB::bind_method(D_METHOD("is_printing_to_stdout"), &Engine::is_printing_to_stdout);
 	ClassDB::bind_method(D_METHOD("set_print_error_messages", "enabled"), &Engine::set_print_error_messages);
 	ClassDB::bind_method(D_METHOD("is_printing_error_messages"), &Engine::is_printing_error_messages);
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "print_error_messages"), "set_print_error_messages", "is_printing_error_messages");
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "print_to_stdout"), "set_print_to_stdout", "is_printing_to_stdout");
 	ADD_PROPERTY(PropertyInfo(Variant::INT, "physics_ticks_per_second"), "set_physics_ticks_per_second", "get_physics_ticks_per_second");
 	ADD_PROPERTY(PropertyInfo(Variant::INT, "max_physics_steps_per_frame"), "set_max_physics_steps_per_frame", "get_max_physics_steps_per_frame");
 	ADD_PROPERTY(PropertyInfo(Variant::INT, "max_fps"), "set_max_fps", "get_max_fps");
@ -1881,14 +2017,14 @@ bool EngineDebugger::is_active() {
 void EngineDebugger::register_profiler(const StringName &p_name, Ref<EngineProfiler> p_profiler) {
 	ERR_FAIL_COND(p_profiler.is_null());
 	ERR_FAIL_COND_MSG(p_profiler->is_bound(), "Profiler already registered.");
-	ERR_FAIL_COND_MSG(profilers.has(p_name) || has_profiler(p_name), "Profiler name already in use: " + p_name);
+	ERR_FAIL_COND_MSG(profilers.has(p_name) || has_profiler(p_name), vformat("Profiler name already in use: '%s'.", p_name));
 	Error err = p_profiler->bind(p_name);
-	ERR_FAIL_COND_MSG(err != OK, "Profiler failed to register with error: " + itos(err));
+	ERR_FAIL_COND_MSG(err != OK, vformat("Profiler failed to register with error: %d.", err));
 	profilers.insert(p_name, p_profiler);
 }
 void EngineDebugger::unregister_profiler(const StringName &p_name) {
-	ERR_FAIL_COND_MSG(!profilers.has(p_name), "Profiler not registered: " + p_name);
+	ERR_FAIL_COND_MSG(!profilers.has(p_name), vformat("Profiler not registered: '%s'.", p_name));
 	profilers[p_name]->unbind();
 	profilers.erase(p_name);
 }
@ -1912,7 +2048,7 @@ void EngineDebugger::profiler_enable(const StringName &p_name, bool p_enabled, c
 }
 void EngineDebugger::register_message_capture(const StringName &p_name, const Callable &p_callable) {
-	ERR_FAIL_COND_MSG(captures.has(p_name) || has_capture(p_name), "Capture already registered: " + p_name);
+	ERR_FAIL_COND_MSG(captures.has(p_name) || has_capture(p_name), vformat("Capture already registered: '%s'.", p_name));
 	captures.insert(p_name, p_callable);
 	Callable &c = captures[p_name];
 	::EngineDebugger::Capture capture(&c, &EngineDebugger::call_capture);
@ -1920,7 +2056,7 @@ void EngineDebugger::register_message_capture(const StringName &p_name, const Ca
 }
 void EngineDebugger::unregister_message_capture(const StringName &p_name) {
-	ERR_FAIL_COND_MSG(!captures.has(p_name), "Capture not registered: " + p_name);
+	ERR_FAIL_COND_MSG(!captures.has(p_name), vformat("Capture not registered: '%s'.", p_name));
 	::EngineDebugger::unregister_message_capture(p_name);
 	captures.erase(p_name);
 }
@ -1954,8 +2090,8 @@ Error EngineDebugger::call_capture(void *p_user, const String &p_cmd, const Arra
 	Variant retval;
 	Callable::CallError err;
 	capture.callp(args, 2, retval, err);
-	ERR_FAIL_COND_V_MSG(err.error != Callable::CallError::CALL_OK, FAILED, "Error calling 'capture' to callable: " + Variant::get_callable_error_text(capture, args, 2, err));
+	ERR_FAIL_COND_V_MSG(err.error != Callable::CallError::CALL_OK, FAILED, vformat("Error calling 'capture' to callable: %s.", Variant::get_callable_error_text(capture, args, 2, err)));
-	ERR_FAIL_COND_V_MSG(retval.get_type() != Variant::BOOL, FAILED, "Error calling 'capture' to callable: " + String(capture) + ". Return type is not bool.");
+	ERR_FAIL_COND_V_MSG(retval.get_type() != Variant::BOOL, FAILED, vformat("Error calling 'capture' to callable: '%s'. Return type is not bool.", String(capture)));
 	r_captured = retval;
 	return OK;
 }
--- a/engine/core/core_bind.h
+++ b/engine/core/core_bind.h
@ -32,11 +32,8 @@
 #define CORE_BIND_H
 #include "core/debugger/engine_profiler.h"
 #include "core/io/image.h"
 #include "core/io/resource_loader.h"
 #include "core/io/resource_saver.h"
 #include "core/object/script_language.h"
 #include "core/os/os.h"
 #include "core/os/semaphore.h"
 #include "core/os/thread.h"
 #include "core/templates/safe_refcount.h"
@ -73,7 +70,7 @@ public:
 	static ResourceLoader *get_singleton() { return singleton; }
 	Error load_threaded_request(const String &p_path, const String &p_type_hint = "", bool p_use_sub_threads = false, CacheMode p_cache_mode = CACHE_MODE_REUSE);
-	ThreadLoadStatus load_threaded_get_status(const String &p_path, Array r_progress = Array());
+	ThreadLoadStatus load_threaded_get_status(const String &p_path, Array r_progress = ClassDB::default_array_arg);
 	Ref<Resource> load_threaded_get(const String &p_path);
 	Ref<Resource> load(const String &p_path, const String &p_type_hint = "", CacheMode p_cache_mode = CACHE_MODE_REUSE);
@ -83,9 +80,12 @@ public:
 	void set_abort_on_missing_resources(bool p_abort);
 	PackedStringArray get_dependencies(const String &p_path);
 	bool has_cached(const String &p_path);
 	Ref<Resource> get_cached_ref(const String &p_path);
 	bool exists(const String &p_path, const String &p_type_hint = "");
 	ResourceUID::ID get_resource_uid(const String &p_path);
 	Vector<String> list_directory(const String &p_directory);
 	ResourceLoader() { singleton = this; }
 };
@ -115,6 +115,8 @@ public:
 	void add_resource_format_saver(Ref<ResourceFormatSaver> p_format_saver, bool p_at_front);
 	void remove_resource_format_saver(Ref<ResourceFormatSaver> p_format_saver);
 	ResourceUID::ID get_resource_id_for_path(const String &p_path, bool p_generate = false);
 	ResourceSaver() { singleton = this; }
 };
@ -127,16 +129,32 @@ protected:
 	static void _bind_methods();
 	static OS *singleton;
 #ifndef DISABLE_DEPRECATED
 	Dictionary _execute_with_pipe_bind_compat_94434(const String &p_path, const Vector<String> &p_arguments);
 	String _read_string_from_stdin_bind_compat_91201();
 	static void _bind_compatibility_methods();
 #endif
 public:
 	enum RenderingDriver {
 		RENDERING_DRIVER_VULKAN,
 		RENDERING_DRIVER_OPENGL3,
 		RENDERING_DRIVER_D3D12,
 		RENDERING_DRIVER_METAL,
 	};
 	PackedByteArray get_entropy(int p_bytes);
 	String get_system_ca_certificates();
 	enum StdHandleType {
 		STD_HANDLE_INVALID,
 		STD_HANDLE_CONSOLE,
 		STD_HANDLE_FILE,
 		STD_HANDLE_PIPE,
 		STD_HANDLE_UNKNOWN,
 	};
 	virtual PackedStringArray get_connected_midi_inputs();
 	virtual void open_midi_inputs();
 	virtual void close_midi_inputs();
@ -157,9 +175,15 @@ public:
 	String get_system_font_path(const String &p_font_name, int p_weight = 400, int p_stretch = 100, bool p_italic = false) const;
 	Vector<String> get_system_font_path_for_text(const String &p_font_name, const String &p_text, const String &p_locale = String(), const String &p_script = String(), int p_weight = 400, int p_stretch = 100, bool p_italic = false) const;
 	String get_executable_path() const;
-	String read_string_from_stdin();
+
-	int execute(const String &p_path, const Vector<String> &p_arguments, Array r_output = Array(), bool p_read_stderr = false, bool p_open_console = false);
+	String read_string_from_stdin(int64_t p_buffer_size = 1024);
-	Dictionary execute_with_pipe(const String &p_path, const Vector<String> &p_arguments);
+	PackedByteArray read_buffer_from_stdin(int64_t p_buffer_size = 1024);
 	StdHandleType get_stdin_type() const;
 	StdHandleType get_stdout_type() const;
 	StdHandleType get_stderr_type() const;
 	int execute(const String &p_path, const Vector<String> &p_arguments, Array r_output = ClassDB::default_array_arg, bool p_read_stderr = false, bool p_open_console = false);
 	Dictionary execute_with_pipe(const String &p_path, const Vector<String> &p_arguments, bool p_blocking = true);
 	int create_process(const String &p_path, const Vector<String> &p_arguments, bool p_open_console = false);
 	int create_instance(const Vector<String> &p_arguments);
 	Error kill(int p_pid);
@ -182,6 +206,7 @@ public:
 	String get_name() const;
 	String get_distribution_name() const;
 	String get_version() const;
 	String get_version_alias() const;
 	Vector<String> get_cmdline_args();
 	Vector<String> get_cmdline_user_args();
@ -236,6 +261,7 @@ public:
 	String get_config_dir() const;
 	String get_data_dir() const;
 	String get_cache_dir() const;
 	String get_temp_dir() const;
 	Error set_thread_name(const String &p_name);
 	::Thread::ID get_thread_caller_id() const;
@ -315,6 +341,8 @@ public:
 	Dictionary make_atlas(const Vector<Size2> &p_rects);
 	TypedArray<Point2i> bresenham_line(const Point2i &p_from, const Point2i &p_to);
 	Geometry2D() { singleton = this; }
 };
@ -389,12 +417,17 @@ class Semaphore : public RefCounted {
 	GDCLASS(Semaphore, RefCounted);
 	::Semaphore semaphore;
 protected:
 	static void _bind_methods();
 #ifndef DISABLE_DEPRECATED
 	void _post_bind_compat_93605();
 	static void _bind_compatibility_methods();
 #endif // DISABLE_DEPRECATED
 public:
 	void wait();
 	bool try_wait();
-	void post();
+	void post(int p_count = 1);
 };
 class Thread : public RefCounted {
@ -434,6 +467,14 @@ protected:
 	static void _bind_methods();
 public:
 	enum APIType {
 		API_CORE,
 		API_EDITOR,
 		API_EXTENSION,
 		API_EDITOR_EXTENSION,
 		API_NONE,
 	};
 	PackedStringArray get_class_list() const;
 	PackedStringArray get_inheriters_from_class(const StringName &p_class) const;
 	StringName get_parent_class(const StringName &p_class) const;
@ -442,11 +483,14 @@ public:
 	bool can_instantiate(const StringName &p_class) const;
 	Variant instantiate(const StringName &p_class) const;
 	APIType class_get_api_type(const StringName &p_class) const;
 	bool class_has_signal(const StringName &p_class, const StringName &p_signal) const;
 	Dictionary class_get_signal(const StringName &p_class, const StringName &p_signal) const;
 	TypedArray<Dictionary> class_get_signal_list(const StringName &p_class, bool p_no_inheritance = false) const;
 	TypedArray<Dictionary> class_get_property_list(const StringName &p_class, bool p_no_inheritance = false) const;
 	StringName class_get_property_getter(const StringName &p_class, const StringName &p_property);
 	StringName class_get_property_setter(const StringName &p_class, const StringName &p_property);
 	Variant class_get_property(Object *p_object, const StringName &p_property) const;
 	Error class_set_property(Object *p_object, const StringName &p_property, const Variant &p_value) const;
@ -457,6 +501,7 @@ public:
 	int class_get_method_argument_count(const StringName &p_class, const StringName &p_method, bool p_no_inheritance = false) const;
 	TypedArray<Dictionary> class_get_method_list(const StringName &p_class, bool p_no_inheritance = false) const;
 	Variant class_call_static(const Variant **p_arguments, int p_argcount, Callable::CallError &r_call_error);
 	PackedStringArray class_get_integer_constant_list(const StringName &p_class, bool p_no_inheritance = false) const;
 	bool class_has_integer_constant(const StringName &p_class, const StringName &p_name) const;
@ -539,9 +584,14 @@ public:
 	void set_editor_hint(bool p_enabled);
 	bool is_editor_hint() const;
 	bool is_embedded_in_editor() const;
 	// `set_write_movie_path()` is not exposed to the scripting API as changing it at run-time has no effect.
 	String get_write_movie_path() const;
 	void set_print_to_stdout(bool p_enabled);
 	bool is_printing_to_stdout() const;
 	void set_print_error_messages(bool p_enabled);
 	bool is_printing_error_messages() const;
@ -611,6 +661,7 @@ VARIANT_BITFIELD_CAST(core_bind::ResourceSaver::SaverFlags);
 VARIANT_ENUM_CAST(core_bind::OS::RenderingDriver);
 VARIANT_ENUM_CAST(core_bind::OS::SystemDir);
 VARIANT_ENUM_CAST(core_bind::OS::StdHandleType);
 VARIANT_ENUM_CAST(core_bind::Geometry2D::PolyBooleanOperation);
 VARIANT_ENUM_CAST(core_bind::Geometry2D::PolyJoinType);
@ -618,4 +669,6 @@ VARIANT_ENUM_CAST(core_bind::Geometry2D::PolyEndType);
 VARIANT_ENUM_CAST(core_bind::Thread::Priority);
 VARIANT_ENUM_CAST(core_bind::special::ClassDB::APIType);
 #endif // CORE_BIND_H
--- a/engine/core/core_builders.py
+++ b/engine/core/core_builders.py
@ -200,8 +200,8 @@ def make_license_header(target, source, env):
            tag, content = reader.next_tag()
            if tag in ("Files", "Copyright", "License"):
                part[tag] = content[:]
-            elif tag == "Comment":
+            elif tag == "Comment" and part:
-                # attach part to named project
+                # attach non-empty part to named project
                projects[content[0]] = projects.get(content[0], []) + [part]
            if not tag or not reader.current:
--- a/engine/core/core_constants.cpp
+++ b/engine/core/core_constants.cpp
@ -33,7 +33,6 @@
 #include "core/input/input_event.h"
 #include "core/object/class_db.h"
 #include "core/os/keyboard.h"
 #include "core/templates/hash_set.h"
 #include "core/variant/variant.h"
 struct _CoreConstant {
@ -671,11 +670,14 @@ void register_global_constants() {
 	BIND_CORE_ENUM_CONSTANT(PROPERTY_HINT_INT_IS_OBJECTID);
 	BIND_CORE_ENUM_CONSTANT(PROPERTY_HINT_INT_IS_POINTER);
 	BIND_CORE_ENUM_CONSTANT(PROPERTY_HINT_ARRAY_TYPE);
 	BIND_CORE_ENUM_CONSTANT(PROPERTY_HINT_DICTIONARY_TYPE);
 	BIND_CORE_ENUM_CONSTANT(PROPERTY_HINT_LOCALE_ID);
 	BIND_CORE_ENUM_CONSTANT(PROPERTY_HINT_LOCALIZABLE_STRING);
 	BIND_CORE_ENUM_CONSTANT(PROPERTY_HINT_NODE_TYPE);
 	BIND_CORE_ENUM_CONSTANT(PROPERTY_HINT_HIDE_QUATERNION_EDIT);
 	BIND_CORE_ENUM_CONSTANT(PROPERTY_HINT_PASSWORD);
 	BIND_CORE_ENUM_CONSTANT(PROPERTY_HINT_TOOL_BUTTON);
 	BIND_CORE_ENUM_CONSTANT(PROPERTY_HINT_ONESHOT);
 	BIND_CORE_ENUM_CONSTANT(PROPERTY_HINT_MAX);
 	BIND_CORE_BITFIELD_FLAG(PROPERTY_USAGE_NONE);
--- a/engine/core/core_constants.h
+++ b/engine/core/core_constants.h
@ -32,7 +32,7 @@
 #define CORE_CONSTANTS_H
 #include "core/string/string_name.h"
-#include "core/templates/hash_set.h"
+#include "core/templates/hash_map.h"
 class CoreConstants {
 public:
--- a/engine/core/core_string_names.h
+++ b/engine/core/core_string_names.h
@ -34,61 +34,56 @@
 #include "core/string/string_name.h"
 class CoreStringNames {
-	friend void register_core_types();
+	inline static CoreStringNames *singleton = nullptr;
 	friend void unregister_core_types();
 public:
 	static void create() { singleton = memnew(CoreStringNames); }
 	static void free() {
 		memdelete(singleton);
 		singleton = nullptr;
 	}
 	CoreStringNames();
 public:
 	_FORCE_INLINE_ static CoreStringNames *get_singleton() { return singleton; }
-	static CoreStringNames *singleton;
+	const StringName free_ = StaticCString::create("free"); // free would conflict with C++ keyword.
 	const StringName changed = StaticCString::create("changed");
 	const StringName script = StaticCString::create("script");
 	const StringName script_changed = StaticCString::create("script_changed");
 	const StringName _iter_init = StaticCString::create("_iter_init");
 	const StringName _iter_next = StaticCString::create("_iter_next");
 	const StringName _iter_get = StaticCString::create("_iter_get");
 	const StringName get_rid = StaticCString::create("get_rid");
 	const StringName _to_string = StaticCString::create("_to_string");
 	const StringName _custom_features = StaticCString::create("_custom_features");
-	StringName free_; // "free", conflict with C++ keyword.
+	const StringName x = StaticCString::create("x");
-	StringName changed;
+	const StringName y = StaticCString::create("y");
-	StringName script;
+	const StringName z = StaticCString::create("z");
-	StringName script_changed;
+	const StringName w = StaticCString::create("w");
-	StringName _iter_init;
+	const StringName r = StaticCString::create("r");
-	StringName _iter_next;
+	const StringName g = StaticCString::create("g");
-	StringName _iter_get;
+	const StringName b = StaticCString::create("b");
-	StringName get_rid;
+	const StringName a = StaticCString::create("a");
-	StringName _to_string;
+	const StringName position = StaticCString::create("position");
-	StringName _custom_features;
+	const StringName size = StaticCString::create("size");
 	const StringName end = StaticCString::create("end");
 	const StringName basis = StaticCString::create("basis");
 	const StringName origin = StaticCString::create("origin");
 	const StringName normal = StaticCString::create("normal");
 	const StringName d = StaticCString::create("d");
 	const StringName h = StaticCString::create("h");
 	const StringName s = StaticCString::create("s");
 	const StringName v = StaticCString::create("v");
 	const StringName r8 = StaticCString::create("r8");
 	const StringName g8 = StaticCString::create("g8");
 	const StringName b8 = StaticCString::create("b8");
 	const StringName a8 = StaticCString::create("a8");
-	StringName x;
+	const StringName call = StaticCString::create("call");
-	StringName y;
+	const StringName call_deferred = StaticCString::create("call_deferred");
-	StringName z;
+	const StringName bind = StaticCString::create("bind");
-	StringName w;
+	const StringName notification = StaticCString::create("notification");
-	StringName r;
+	const StringName property_list_changed = StaticCString::create("property_list_changed");
 	StringName g;
 	StringName b;
 	StringName a;
 	StringName position;
 	StringName size;
 	StringName end;
 	StringName basis;
 	StringName origin;
 	StringName normal;
 	StringName d;
 	StringName h;
 	StringName s;
 	StringName v;
 	StringName r8;
 	StringName g8;
 	StringName b8;
 	StringName a8;
 	StringName call;
 	StringName call_deferred;
 	StringName bind;
 	StringName notification;
 	StringName property_list_changed;
 };
 #define CoreStringName(m_name) CoreStringNames::get_singleton()->m_name
--- a/engine/core/crypto/SCsub
+++ b/engine/core/crypto/SCsub
@ -1,4 +1,5 @@
 #!/usr/bin/env python
 from misc.utility.scons_hints import *
 Import("env")
--- a/engine/core/crypto/aes_context.h
+++ b/engine/core/crypto/aes_context.h
@ -38,7 +38,7 @@ class AESContext : public RefCounted {
 	GDCLASS(AESContext, RefCounted);
 public:
-	enum Mode {
+	enum Mode : int32_t {
 		MODE_ECB_ENCRYPT,
 		MODE_ECB_DECRYPT,
 		MODE_CBC_ENCRYPT,
--- a/engine/core/crypto/crypto.cpp
+++ b/engine/core/crypto/crypto.cpp
@ -30,16 +30,12 @@
 #include "crypto.h"
 #include "core/config/engine.h"
 #include "core/io/certs_compressed.gen.h"
 #include "core/io/compression.h"
 /// Resources
-CryptoKey *(*CryptoKey::_create)() = nullptr;
+CryptoKey *(*CryptoKey::_create)(bool p_notify_postinitialize) = nullptr;
-CryptoKey *CryptoKey::create() {
+CryptoKey *CryptoKey::create(bool p_notify_postinitialize) {
 	if (_create) {
-		return _create();
+		return _create(p_notify_postinitialize);
 	}
 	return nullptr;
 }
@ -52,10 +48,10 @@ void CryptoKey::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("load_from_string", "string_key", "public_only"), &CryptoKey::load_from_string, DEFVAL(false));
 }
-X509Certificate *(*X509Certificate::_create)() = nullptr;
+X509Certificate *(*X509Certificate::_create)(bool p_notify_postinitialize) = nullptr;
-X509Certificate *X509Certificate::create() {
+X509Certificate *X509Certificate::create(bool p_notify_postinitialize) {
 	if (_create) {
-		return _create();
+		return _create(p_notify_postinitialize);
 	}
 	return nullptr;
 }
@ -116,10 +112,10 @@ void HMACContext::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("finish"), &HMACContext::finish);
 }
-HMACContext *(*HMACContext::_create)() = nullptr;
+HMACContext *(*HMACContext::_create)(bool p_notify_postinitialize) = nullptr;
-HMACContext *HMACContext::create() {
+HMACContext *HMACContext::create(bool p_notify_postinitialize) {
 	if (_create) {
-		return _create();
+		return _create(p_notify_postinitialize);
 	}
 	ERR_FAIL_V_MSG(nullptr, "HMACContext is not available when the mbedtls module is disabled.");
 }
@ -127,10 +123,10 @@ HMACContext *HMACContext::create() {
 /// Crypto
 void (*Crypto::_load_default_certificates)(const String &p_path) = nullptr;
-Crypto *(*Crypto::_create)() = nullptr;
+Crypto *(*Crypto::_create)(bool p_notify_postinitialize) = nullptr;
-Crypto *Crypto::create() {
+Crypto *Crypto::create(bool p_notify_postinitialize) {
 	if (_create) {
-		return _create();
+		return _create(p_notify_postinitialize);
 	}
 	ERR_FAIL_V_MSG(nullptr, "Crypto is not available when the mbedtls module is disabled.");
 }
@ -240,7 +236,7 @@ Error ResourceFormatSaverCrypto::save(const Ref<Resource> &p_resource, const Str
 	} else {
 		ERR_FAIL_V(ERR_INVALID_PARAMETER);
 	}
-	ERR_FAIL_COND_V_MSG(err != OK, err, "Cannot save Crypto resource to file '" + p_path + "'.");
+	ERR_FAIL_COND_V_MSG(err != OK, err, vformat("Cannot save Crypto resource to file '%s'.", p_path));
 	return OK;
 }
--- a/engine/core/crypto/crypto.h
+++ b/engine/core/crypto/crypto.h
@ -42,10 +42,10 @@ class CryptoKey : public Resource {
 protected:
 	static void _bind_methods();
-	static CryptoKey *(*_create)();
+	static CryptoKey *(*_create)(bool p_notify_postinitialize);
 public:
-	static CryptoKey *create();
+	static CryptoKey *create(bool p_notify_postinitialize = true);
 	virtual Error load(const String &p_path, bool p_public_only = false) = 0;
 	virtual Error save(const String &p_path, bool p_public_only = false) = 0;
 	virtual String save_to_string(bool p_public_only = false) = 0;
@ -58,10 +58,10 @@ class X509Certificate : public Resource {
 protected:
 	static void _bind_methods();
-	static X509Certificate *(*_create)();
+	static X509Certificate *(*_create)(bool p_notify_postinitialize);
 public:
-	static X509Certificate *create();
+	static X509Certificate *create(bool p_notify_postinitialize = true);
 	virtual Error load(const String &p_path) = 0;
 	virtual Error load_from_memory(const uint8_t *p_buffer, int p_len) = 0;
 	virtual Error save(const String &p_path) = 0;
@ -106,10 +106,10 @@ class HMACContext : public RefCounted {
 protected:
 	static void _bind_methods();
-	static HMACContext *(*_create)();
+	static HMACContext *(*_create)(bool p_notify_postinitialize);
 public:
-	static HMACContext *create();
+	static HMACContext *create(bool p_notify_postinitialize = true);
 	virtual Error start(HashingContext::HashType p_hash_type, const PackedByteArray &p_key) = 0;
 	virtual Error update(const PackedByteArray &p_data) = 0;
@ -124,11 +124,11 @@ class Crypto : public RefCounted {
 protected:
 	static void _bind_methods();
-	static Crypto *(*_create)();
+	static Crypto *(*_create)(bool p_notify_postinitialize);
 	static void (*_load_default_certificates)(const String &p_path);
 public:
-	static Crypto *create();
+	static Crypto *create(bool p_notify_postinitialize = true);
 	static void load_default_certificates(const String &p_path);
 	virtual PackedByteArray generate_random_bytes(int p_bytes) = 0;
@ -155,6 +155,10 @@ public:
 	virtual void get_recognized_extensions(List<String> *p_extensions) const override;
 	virtual bool handles_type(const String &p_type) const override;
 	virtual String get_resource_type(const String &p_path) const override;
 	// Treat certificates as text files, do not generate a `*.{crt,key,pub}.uid` file.
 	virtual ResourceUID::ID get_resource_uid(const String &p_path) const override { return ResourceUID::INVALID_ID; }
 	virtual bool has_custom_uid_support() const override { return true; }
 };
 class ResourceFormatSaverCrypto : public ResourceFormatSaver {
--- a/engine/core/crypto/crypto_core.cpp
+++ b/engine/core/crypto/crypto_core.cpp
@ -70,7 +70,7 @@ int CryptoCore::RandomGenerator::_entropy_poll(void *p_data, unsigned char *r_bu
 Error CryptoCore::RandomGenerator::init() {
 	int ret = mbedtls_ctr_drbg_seed((mbedtls_ctr_drbg_context *)ctx, mbedtls_entropy_func, (mbedtls_entropy_context *)entropy, nullptr, 0);
 	if (ret) {
-		ERR_FAIL_COND_V_MSG(ret, FAILED, " failed\n  ! mbedtls_ctr_drbg_seed returned an error" + itos(ret));
+		ERR_FAIL_COND_V_MSG(ret, FAILED, vformat(" failed\n  ! mbedtls_ctr_drbg_seed returned an error %d.", ret));
 	}
 	return OK;
 }
@ -78,7 +78,7 @@ Error CryptoCore::RandomGenerator::init() {
 Error CryptoCore::RandomGenerator::get_random_bytes(uint8_t *r_buffer, size_t p_bytes) {
 	ERR_FAIL_NULL_V(ctx, ERR_UNCONFIGURED);
 	int ret = mbedtls_ctr_drbg_random((mbedtls_ctr_drbg_context *)ctx, r_buffer, p_bytes);
-	ERR_FAIL_COND_V_MSG(ret, FAILED, " failed\n  ! mbedtls_ctr_drbg_seed returned an error" + itos(ret));
+	ERR_FAIL_COND_V_MSG(ret, FAILED, vformat(" failed\n  ! mbedtls_ctr_drbg_seed returned an error %d.", ret));
 	return OK;
 }
--- a/engine/core/crypto/hashing_context.h
+++ b/engine/core/crypto/hashing_context.h
@ -37,7 +37,7 @@ class HashingContext : public RefCounted {
 	GDCLASS(HashingContext, RefCounted);
 public:
-	enum HashType {
+	enum HashType : int32_t {
 		HASH_MD5,
 		HASH_SHA1,
 		HASH_SHA256
--- a/engine/core/debugger/SCsub
+++ b/engine/core/debugger/SCsub
@ -1,4 +1,5 @@
 #!/usr/bin/env python
 from misc.utility.scons_hints import *
 Import("env")
--- a/engine/core/debugger/debugger_marshalls.cpp
+++ b/engine/core/debugger/debugger_marshalls.cpp
@ -147,3 +147,37 @@ bool DebuggerMarshalls::OutputError::deserialize(const Array &p_arr) {
 	CHECK_END(p_arr, idx, "OutputError");
 	return true;
 }
 Array DebuggerMarshalls::serialize_key_shortcut(const Ref<Shortcut> &p_shortcut) {
 	ERR_FAIL_COND_V(p_shortcut.is_null(), Array());
 	Array keys;
 	for (const Ref<InputEvent> ev : p_shortcut->get_events()) {
 		const Ref<InputEventKey> kev = ev;
 		ERR_CONTINUE(kev.is_null());
 		if (kev->get_physical_keycode() != Key::NONE) {
 			keys.push_back(true);
 			keys.push_back(kev->get_physical_keycode_with_modifiers());
 		} else {
 			keys.push_back(false);
 			keys.push_back(kev->get_keycode_with_modifiers());
 		}
 	}
 	return keys;
 }
 Ref<Shortcut> DebuggerMarshalls::deserialize_key_shortcut(const Array &p_keys) {
 	Array key_events;
 	ERR_FAIL_COND_V(p_keys.size() % 2 != 0, Ref<Shortcut>());
 	for (int i = 0; i < p_keys.size(); i += 2) {
 		ERR_CONTINUE(p_keys[i].get_type() != Variant::BOOL);
 		ERR_CONTINUE(p_keys[i + 1].get_type() != Variant::INT);
 		key_events.push_back(InputEventKey::create_reference((Key)p_keys[i + 1].operator int(), p_keys[i].operator bool()));
 	}
 	if (key_events.is_empty()) {
 		return Ref<Shortcut>();
 	}
 	Ref<Shortcut> shortcut;
 	shortcut.instantiate();
 	shortcut->set_events(key_events);
 	return shortcut;
 }
--- a/engine/core/debugger/debugger_marshalls.h
+++ b/engine/core/debugger/debugger_marshalls.h
@ -31,6 +31,7 @@
 #ifndef DEBUGGER_MARSHALLS_H
 #define DEBUGGER_MARSHALLS_H
 #include "core/input/shortcut.h"
 #include "core/object/script_language.h"
 struct DebuggerMarshalls {
@ -68,6 +69,9 @@ struct DebuggerMarshalls {
 		Array serialize();
 		bool deserialize(const Array &p_arr);
 	};
 	static Array serialize_key_shortcut(const Ref<Shortcut> &p_shortcut);
 	static Ref<Shortcut> deserialize_key_shortcut(const Array &p_keys);
 };
 #endif // DEBUGGER_MARSHALLS_H
--- a/engine/core/debugger/engine_debugger.cpp
+++ b/engine/core/debugger/engine_debugger.cpp
@ -46,12 +46,12 @@ HashMap<String, EngineDebugger::CreatePeerFunc> EngineDebugger::protocols;
 void (*EngineDebugger::allow_focus_steal_fn)();
 void EngineDebugger::register_profiler(const StringName &p_name, const Profiler &p_func) {
-	ERR_FAIL_COND_MSG(profilers.has(p_name), "Profiler already registered: " + p_name);
+	ERR_FAIL_COND_MSG(profilers.has(p_name), vformat("Profiler already registered: '%s'.", p_name));
 	profilers.insert(p_name, p_func);
 }
 void EngineDebugger::unregister_profiler(const StringName &p_name) {
-	ERR_FAIL_COND_MSG(!profilers.has(p_name), "Profiler not registered: " + p_name);
+	ERR_FAIL_COND_MSG(!profilers.has(p_name), vformat("Profiler not registered: '%s'.", p_name));
 	Profiler &p = profilers[p_name];
 	if (p.active && p.toggle) {
 		p.toggle(p.data, false, Array());
@ -61,22 +61,22 @@ void EngineDebugger::unregister_profiler(const StringName &p_name) {
 }
 void EngineDebugger::register_message_capture(const StringName &p_name, Capture p_func) {
-	ERR_FAIL_COND_MSG(captures.has(p_name), "Capture already registered: " + p_name);
+	ERR_FAIL_COND_MSG(captures.has(p_name), vformat("Capture already registered: '%s'.", p_name));
 	captures.insert(p_name, p_func);
 }
 void EngineDebugger::unregister_message_capture(const StringName &p_name) {
-	ERR_FAIL_COND_MSG(!captures.has(p_name), "Capture not registered: " + p_name);
+	ERR_FAIL_COND_MSG(!captures.has(p_name), vformat("Capture not registered: '%s'.", p_name));
 	captures.erase(p_name);
 }
 void EngineDebugger::register_uri_handler(const String &p_protocol, CreatePeerFunc p_func) {
-	ERR_FAIL_COND_MSG(protocols.has(p_protocol), "Protocol handler already registered: " + p_protocol);
+	ERR_FAIL_COND_MSG(protocols.has(p_protocol), vformat("Protocol handler already registered: '%s'.", p_protocol));
 	protocols.insert(p_protocol, p_func);
 }
 void EngineDebugger::profiler_enable(const StringName &p_name, bool p_enabled, const Array &p_opts) {
-	ERR_FAIL_COND_MSG(!profilers.has(p_name), "Can't change profiler state, no profiler: " + p_name);
+	ERR_FAIL_COND_MSG(!profilers.has(p_name), vformat("Can't change profiler state, no profiler: '%s'.", p_name));
 	Profiler &p = profilers[p_name];
 	if (p.toggle) {
 		p.toggle(p.data, p_enabled, p_opts);
@ -85,7 +85,7 @@ void EngineDebugger::profiler_enable(const StringName &p_name, bool p_enabled, c
 }
 void EngineDebugger::profiler_add_frame_data(const StringName &p_name, const Array &p_data) {
-	ERR_FAIL_COND_MSG(!profilers.has(p_name), "Can't add frame data, no profiler: " + p_name);
+	ERR_FAIL_COND_MSG(!profilers.has(p_name), vformat("Can't add frame data, no profiler: '%s'.", p_name));
 	Profiler &p = profilers[p_name];
 	if (p.add) {
 		p.add(p.data, p_data);
@ -106,7 +106,7 @@ bool EngineDebugger::has_capture(const StringName &p_name) {
 Error EngineDebugger::capture_parse(const StringName &p_name, const String &p_msg, const Array &p_args, bool &r_captured) {
 	r_captured = false;
-	ERR_FAIL_COND_V_MSG(!captures.has(p_name), ERR_UNCONFIGURED, "Capture not registered: " + p_name);
+	ERR_FAIL_COND_V_MSG(!captures.has(p_name), ERR_UNCONFIGURED, vformat("Capture not registered: '%s'.", p_name));
 	const Capture &cap = captures[p_name];
 	return cap.capture(cap.data, p_msg, p_args, r_captured);
 }
@ -163,8 +163,8 @@ void EngineDebugger::initialize(const String &p_uri, bool p_skip_breakpoints, co
 	for (int i = 0; i < p_breakpoints.size(); i++) {
 		const String &bp = p_breakpoints[i];
-		int sp = bp.rfind(":");
+		int sp = bp.rfind_char(':');
-		ERR_CONTINUE_MSG(sp == -1, "Invalid breakpoint: '" + bp + "', expected file:line format.");
+		ERR_CONTINUE_MSG(sp == -1, vformat("Invalid breakpoint: '%s', expected file:line format.", bp));
 		singleton_script_debugger->insert_breakpoint(bp.substr(sp + 1, bp.length()).to_int(), bp.substr(0, sp));
 	}
--- a/engine/core/debugger/engine_debugger.h
+++ b/engine/core/debugger/engine_debugger.h
@ -36,7 +36,6 @@
 #include "core/templates/hash_map.h"
 #include "core/templates/vector.h"
 #include "core/variant/array.h"
 #include "core/variant/variant.h"
 class RemoteDebuggerPeer;
 class ScriptDebugger;
@ -106,7 +105,7 @@ public:
 	_FORCE_INLINE_ static EngineDebugger *get_singleton() { return singleton; }
 	_FORCE_INLINE_ static bool is_active() { return singleton != nullptr && script_debugger != nullptr; }
-	_FORCE_INLINE_ static ScriptDebugger *get_script_debugger() { return script_debugger; };
+	_FORCE_INLINE_ static ScriptDebugger *get_script_debugger() { return script_debugger; }
 	static void initialize(const String &p_uri, bool p_skip_breakpoints, const Vector<String> &p_breakpoints, void (*p_allow_focus_steal_fn)());
 	static void deinitialize();
--- a/engine/core/debugger/local_debugger.cpp
+++ b/engine/core/debugger/local_debugger.cpp
@ -171,7 +171,7 @@ void LocalDebugger::debug(bool p_can_continue, bool p_is_error_breakpoint) {
 			} else {
 				String key_value = line.get_slicec(' ', 1);
-				int value_pos = key_value.find("=");
+				int value_pos = key_value.find_char('=');
 				if (value_pos < 0) {
 					print_line("Error: Invalid set format. Use: set key=value");
@ -208,10 +208,10 @@ void LocalDebugger::debug(bool p_can_continue, bool p_is_error_breakpoint) {
 			print_variables(members, values, variable_prefix);
 		} else if (line.begins_with("p") || line.begins_with("print")) {
-			if (line.get_slice_count(" ") <= 1) {
+			if (line.find_char(' ') < 0) {
-				print_line("Usage: print <expre>");
+				print_line("Usage: print <expression>");
 			} else {
-				String expr = line.get_slicec(' ', 2);
+				String expr = line.split(" ", true, 1)[1];
 				String res = script_lang->debug_parse_stack_level_expression(current_frame, expr);
 				print_line(res);
 			}
@ -344,7 +344,7 @@ Pair<String, int> LocalDebugger::to_breakpoint(const String &p_line) {
 	String breakpoint_part = p_line.get_slicec(' ', 1);
 	Pair<String, int> breakpoint;
-	int last_colon = breakpoint_part.rfind(":");
+	int last_colon = breakpoint_part.rfind_char(':');
 	if (last_colon < 0) {
 		print_line("Error: Invalid breakpoint format. Expected [source:line]");
 		return breakpoint;
--- a/engine/core/debugger/remote_debugger.cpp
+++ b/engine/core/debugger/remote_debugger.cpp
@ -37,6 +37,7 @@
 #include "core/debugger/script_debugger.h"
 #include "core/input/input.h"
 #include "core/io/resource_loader.h"
 #include "core/math/expression.h"
 #include "core/object/script_language.h"
 #include "core/os/os.h"
 #include "servers/display_server.h"
@ -78,7 +79,7 @@ public:
 		for (int i = 0; i < custom_monitor_names.size(); i++) {
 			Variant monitor_value = performance->call("get_custom_monitor", custom_monitor_names[i]);
 			if (!monitor_value.is_num()) {
-				ERR_PRINT("Value of custom monitor '" + String(custom_monitor_names[i]) + "' is not a number");
+				ERR_PRINT(vformat("Value of custom monitor '%s' is not a number.", String(custom_monitor_names[i])));
 				arr[i + max] = Variant();
 			} else {
 				arr[i + max] = monitor_value;
@ -337,7 +338,7 @@ void RemoteDebugger::_send_stack_vars(List<String> &p_names, List<Variant> &p_va
 }
 Error RemoteDebugger::_try_capture(const String &p_msg, const Array &p_data, bool &r_captured) {
-	const int idx = p_msg.find(":");
+	const int idx = p_msg.find_char(':');
 	r_captured = false;
 	if (idx < 0) { // No prefix, unknown message.
 		return OK;
@ -529,11 +530,46 @@ void RemoteDebugger::debug(bool p_can_continue, bool p_is_error_breakpoint) {
 			} else if (command == "set_skip_breakpoints") {
 				ERR_FAIL_COND(data.is_empty());
 				script_debugger->set_skip_breakpoints(data[0]);
 			} else if (command == "evaluate") {
 				String expression_str = data[0];
 				int frame = data[1];
 				ScriptInstance *breaked_instance = script_debugger->get_break_language()->debug_get_stack_level_instance(frame);
 				if (!breaked_instance) {
 					break;
 				}
 				List<String> locals;
 				List<Variant> local_vals;
 				script_debugger->get_break_language()->debug_get_stack_level_locals(frame, &locals, &local_vals);
 				ERR_FAIL_COND(locals.size() != local_vals.size());
 				PackedStringArray locals_vector;
 				for (const String &S : locals) {
 					locals_vector.append(S);
 				}
 				Array local_vals_array;
 				for (const Variant &V : local_vals) {
 					local_vals_array.append(V);
 				}
 				Expression expression;
 				expression.parse(expression_str, locals_vector);
 				const Variant return_val = expression.execute(local_vals_array, breaked_instance->get_owner());
 				DebuggerMarshalls::ScriptStackVariable stvar;
 				stvar.name = expression_str;
 				stvar.value = return_val;
 				stvar.type = 3;
 				send_message("evaluation_return", stvar.serialize());
 			} else {
 				bool captured = false;
 				ERR_CONTINUE(_try_capture(command, data, captured) != OK);
 				if (!captured) {
-					WARN_PRINT("Unknown message received from debugger: " + command);
+					WARN_PRINT(vformat("Unknown message received from debugger: %s.", command));
 				}
 			}
 		} else {
@ -574,7 +610,7 @@ void RemoteDebugger::poll_events(bool p_is_idle) {
 		ERR_CONTINUE(arr[1].get_type() != Variant::ARRAY);
 		const String cmd = arr[0];
-		const int idx = cmd.find(":");
+		const int idx = cmd.find_char(':');
 		bool parsed = false;
 		if (idx < 0) { // Not prefix, use scripts capture.
 			capture_parse("core", cmd, arr[1], parsed);
--- a/engine/core/debugger/remote_debugger_peer.cpp
+++ b/engine/core/debugger/remote_debugger_peer.cpp
@ -144,9 +144,8 @@ void RemoteDebuggerPeerTCP::_read_in() {
 			Error err = decode_variant(var, buf, in_pos, &read);
 			ERR_CONTINUE(read != in_pos || err != OK);
 			ERR_CONTINUE_MSG(var.get_type() != Variant::ARRAY, "Malformed packet received, not an Array.");
-			mutex.lock();
+			MutexLock lock(mutex);
 			in_queue.push_back(var);
 			mutex.unlock();
 		}
 	}
 }
@ -174,12 +173,12 @@ Error RemoteDebuggerPeerTCP::connect_to_host(const String &p_host, uint16_t p_po
 		} else {
 			const int ms = waits[i];
 			OS::get_singleton()->delay_usec(ms * 1000);
-			print_verbose("Remote Debugger: Connection failed with status: '" + String::num(tcp_client->get_status()) + "', retrying in " + String::num(ms) + " msec.");
+			print_verbose("Remote Debugger: Connection failed with status: '" + String::num_int64(tcp_client->get_status()) + "', retrying in " + String::num_int64(ms) + " msec.");
 		}
 	}
 	if (tcp_client->get_status() != StreamPeerTCP::STATUS_CONNECTED) {
-		ERR_PRINT("Remote Debugger: Unable to connect. Status: " + String::num(tcp_client->get_status()) + ".");
+		ERR_PRINT(vformat("Remote Debugger: Unable to connect. Status: %s.", String::num_int64(tcp_client->get_status())));
 		return FAILED;
 	}
 	connected = true;
@ -224,8 +223,8 @@ RemoteDebuggerPeer *RemoteDebuggerPeerTCP::create(const String &p_uri) {
 	String debug_host = p_uri.replace("tcp://", "");
 	uint16_t debug_port = 6007;
-	if (debug_host.contains(":")) {
+	if (debug_host.contains_char(':')) {
-		int sep_pos = debug_host.rfind(":");
+		int sep_pos = debug_host.rfind_char(':');
 		debug_port = debug_host.substr(sep_pos + 1).to_int();
 		debug_host = debug_host.substr(0, sep_pos);
 	}
--- a/engine/core/debugger/script_debugger.h
+++ b/engine/core/debugger/script_debugger.h
@ -34,7 +34,6 @@
 #include "core/object/script_language.h"
 #include "core/string/string_name.h"
 #include "core/templates/hash_set.h"
 #include "core/templates/rb_map.h"
 #include "core/templates/vector.h"
 class ScriptDebugger {
--- a/engine/core/doc_data.cpp
+++ b/engine/core/doc_data.cpp
@ -33,6 +33,8 @@
 String DocData::get_default_value_string(const Variant &p_value) {
 	if (p_value.get_type() == Variant::ARRAY) {
 		return Variant(Array(p_value, 0, StringName(), Variant())).get_construct_string().replace("\n", " ");
 	} else if (p_value.get_type() == Variant::DICTIONARY) {
 		return Variant(Dictionary(p_value, 0, StringName(), Variant(), 0, StringName(), Variant())).get_construct_string().replace("\n", " ");
 	} else {
 		return p_value.get_construct_string().replace("\n", " ");
 	}
@ -57,6 +59,8 @@ void DocData::return_doc_from_retinfo(DocData::MethodDoc &p_method, const Proper
 		p_method.return_type = p_retinfo.class_name;
 	} else if (p_retinfo.type == Variant::ARRAY && p_retinfo.hint == PROPERTY_HINT_ARRAY_TYPE) {
 		p_method.return_type = p_retinfo.hint_string + "[]";
 	} else if (p_retinfo.type == Variant::DICTIONARY && p_retinfo.hint == PROPERTY_HINT_DICTIONARY_TYPE) {
 		p_method.return_type = "Dictionary[" + p_retinfo.hint_string.replace(";", ", ") + "]";
 	} else if (p_retinfo.hint == PROPERTY_HINT_RESOURCE_TYPE) {
 		p_method.return_type = p_retinfo.hint_string;
 	} else if (p_retinfo.type == Variant::NIL && p_retinfo.usage & PROPERTY_USAGE_NIL_IS_VARIANT) {
@ -89,6 +93,8 @@ void DocData::argument_doc_from_arginfo(DocData::ArgumentDoc &p_argument, const
 		p_argument.type = p_arginfo.class_name;
 	} else if (p_arginfo.type == Variant::ARRAY && p_arginfo.hint == PROPERTY_HINT_ARRAY_TYPE) {
 		p_argument.type = p_arginfo.hint_string + "[]";
 	} else if (p_arginfo.type == Variant::DICTIONARY && p_arginfo.hint == PROPERTY_HINT_DICTIONARY_TYPE) {
 		p_argument.type = "Dictionary[" + p_arginfo.hint_string.replace(";", ", ") + "]";
 	} else if (p_arginfo.hint == PROPERTY_HINT_RESOURCE_TYPE) {
 		p_argument.type = p_arginfo.hint_string;
 	} else if (p_arginfo.type == Variant::NIL) {
@ -99,28 +105,6 @@ void DocData::argument_doc_from_arginfo(DocData::ArgumentDoc &p_argument, const
 	}
 }
 void DocData::property_doc_from_scriptmemberinfo(DocData::PropertyDoc &p_property, const ScriptMemberInfo &p_memberinfo) {
 	p_property.name = p_memberinfo.propinfo.name;
 	p_property.description = p_memberinfo.doc_string;
 	if (p_memberinfo.propinfo.type == Variant::OBJECT) {
 		p_property.type = p_memberinfo.propinfo.class_name;
 	} else if (p_memberinfo.propinfo.type == Variant::NIL && p_memberinfo.propinfo.usage & PROPERTY_USAGE_NIL_IS_VARIANT) {
 		p_property.type = "Variant";
 	} else {
 		p_property.type = Variant::get_type_name(p_memberinfo.propinfo.type);
 	}
 	p_property.setter = p_memberinfo.setter;
 	p_property.getter = p_memberinfo.getter;
 	if (p_memberinfo.has_default_value && p_memberinfo.default_value.get_type() != Variant::OBJECT) {
 		p_property.default_value = get_default_value_string(p_memberinfo.default_value);
 	}
 	p_property.overridden = false;
 }
 void DocData::method_doc_from_methodinfo(DocData::MethodDoc &p_method, const MethodInfo &p_methodinfo, const String &p_desc) {
 	p_method.name = p_methodinfo.name;
 	p_method.description = p_desc;
@ -164,14 +148,3 @@ void DocData::method_doc_from_methodinfo(DocData::MethodDoc &p_method, const Met
 		p_method.arguments.push_back(argument);
 	}
 }
 void DocData::constant_doc_from_variant(DocData::ConstantDoc &p_const, const StringName &p_name, const Variant &p_value, const String &p_desc) {
 	p_const.name = p_name;
 	p_const.value = p_value;
 	p_const.is_value_valid = (p_value.get_type() != Variant::OBJECT);
 	p_const.description = p_desc;
 }
 void DocData::signal_doc_from_methodinfo(DocData::MethodDoc &p_signal, const MethodInfo &p_methodinfo, const String &p_desc) {
 	return method_doc_from_methodinfo(p_signal, p_methodinfo, p_desc);
 }
--- a/engine/core/doc_data.h
+++ b/engine/core/doc_data.h
@ -34,16 +34,6 @@
 #include "core/io/xml_parser.h"
 #include "core/variant/variant.h"
 struct ScriptMemberInfo {
 	PropertyInfo propinfo;
 	String doc_string;
 	StringName setter;
 	StringName getter;
 	bool has_default_value = false;
 	Variant default_value;
 };
 class DocData {
 public:
 	struct ArgumentDoc {
@ -276,6 +266,7 @@ public:
 		String name;
 		String value;
 		bool is_value_valid = false;
 		String type;
 		String enumeration;
 		bool is_bitfield = false;
 		String description;
@ -302,6 +293,10 @@ public:
 				doc.is_value_valid = p_dict["is_value_valid"];
 			}
 			if (p_dict.has("type")) {
 				doc.type = p_dict["type"];
 			}
 			if (p_dict.has("enumeration")) {
 				doc.enumeration = p_dict["enumeration"];
 				if (p_dict.has("is_bitfield")) {
@ -352,6 +347,8 @@ public:
 			dict["is_value_valid"] = p_doc.is_value_valid;
 			dict["type"] = p_doc.type;
 			if (!p_doc.enumeration.is_empty()) {
 				dict["enumeration"] = p_doc.enumeration;
 				dict["is_bitfield"] = p_doc.is_bitfield;
@ -522,6 +519,10 @@ public:
 		String type;
 		String data_type;
 		String description;
 		bool is_deprecated = false;
 		String deprecated_message;
 		bool is_experimental = false;
 		String experimental_message;
 		String default_value;
 		String keywords;
 		bool operator<(const ThemeItemDoc &p_theme_item) const {
@ -550,6 +551,16 @@ public:
 				doc.description = p_dict["description"];
 			}
 			if (p_dict.has("deprecated")) {
 				doc.is_deprecated = true;
 				doc.deprecated_message = p_dict["deprecated"];
 			}
 			if (p_dict.has("experimental")) {
 				doc.is_experimental = true;
 				doc.experimental_message = p_dict["experimental"];
 			}
 			if (p_dict.has("default_value")) {
 				doc.default_value = p_dict["default_value"];
 			}
@ -579,6 +590,14 @@ public:
 				dict["description"] = p_doc.description;
 			}
 			if (p_doc.is_deprecated) {
 				dict["deprecated"] = p_doc.deprecated_message;
 			}
 			if (p_doc.is_experimental) {
 				dict["experimental"] = p_doc.experimental_message;
 			}
 			if (!p_doc.default_value.is_empty()) {
 				dict["default_value"] = p_doc.default_value;
 			}
@ -959,10 +978,7 @@ public:
 	static void return_doc_from_retinfo(DocData::MethodDoc &p_method, const PropertyInfo &p_retinfo);
 	static void argument_doc_from_arginfo(DocData::ArgumentDoc &p_argument, const PropertyInfo &p_arginfo);
 	static void property_doc_from_scriptmemberinfo(DocData::PropertyDoc &p_property, const ScriptMemberInfo &p_memberinfo);
 	static void method_doc_from_methodinfo(DocData::MethodDoc &p_method, const MethodInfo &p_methodinfo, const String &p_desc);
 	static void constant_doc_from_variant(DocData::ConstantDoc &p_const, const StringName &p_name, const Variant &p_value, const String &p_desc);
 	static void signal_doc_from_methodinfo(DocData::MethodDoc &p_signal, const MethodInfo &p_methodinfo, const String &p_desc);
 };
 #endif // DOC_DATA_H
--- a/engine/core/error/SCsub
+++ b/engine/core/error/SCsub
@ -1,4 +1,5 @@
 #!/usr/bin/env python
 from misc.utility.scons_hints import *
 Import("env")
--- a/engine/core/error/error_list.h
+++ b/engine/core/error/error_list.h
@ -41,6 +41,7 @@
 * - Are added to the Error enum in core/error/error_list.h
 * - Have a description added to error_names in core/error/error_list.cpp
 * - Are bound with BIND_CORE_ENUM_CONSTANT() in core/core_constants.cpp
 * - Have a matching Android version in platform/android/java/lib/src/org/godotengine/godot/error/Error.kt
 */
 enum Error {
--- a/engine/core/error/error_macros.cpp
+++ b/engine/core/error/error_macros.cpp
@ -34,6 +34,12 @@
 #include "core/os/os.h"
 #include "core/string/ustring.h"
 // Optional physics interpolation warnings try to include the path to the relevant node.
 #if defined(DEBUG_ENABLED) && defined(TOOLS_ENABLED)
 #include "core/config/project_settings.h"
 #include "scene/main/node.h"
 #endif
 static ErrorHandlerList *error_handler_list = nullptr;
 void add_error_handler(ErrorHandlerList *p_handler) {
@ -101,6 +107,28 @@ void _err_print_error(const char *p_function, const char *p_file, int p_line, co
 	_global_unlock();
 }
 // For printing errors when we may crash at any point, so we must flush ASAP a lot of lines
 // but we don't want to make it noisy by printing lots of file & line info (because it's already
 // been printing by a preceding _err_print_error).
 void _err_print_error_asap(const String &p_error, ErrorHandlerType p_type) {
 	if (OS::get_singleton()) {
 		OS::get_singleton()->printerr("ERROR: %s\n", p_error.utf8().get_data());
 	} else {
 		// Fallback if errors happen before OS init or after it's destroyed.
 		const char *err_details = p_error.utf8().get_data();
 		fprintf(stderr, "ERROR: %s\n", err_details);
 	}
 	_global_lock();
 	ErrorHandlerList *l = error_handler_list;
 	while (l) {
 		l->errfunc(l->userdata, "", "", 0, p_error.utf8().get_data(), "", false, p_type);
 		l = l->next;
 	}
 	_global_unlock();
 }
 // Errors with message. (All combinations of p_error and p_message as String or char*.)
 void _err_print_error(const char *p_function, const char *p_file, int p_line, const String &p_error, const char *p_message, bool p_editor_notify, ErrorHandlerType p_type) {
 	_err_print_error(p_function, p_file, p_line, p_error.utf8().get_data(), p_message, p_editor_notify, p_type);
@ -128,3 +156,48 @@ void _err_print_index_error(const char *p_function, const char *p_file, int p_li
 void _err_flush_stdout() {
 	fflush(stdout);
 }
 // Prevent error spam by limiting the warnings to a certain frequency.
 void _physics_interpolation_warning(const char *p_function, const char *p_file, int p_line, ObjectID p_id, const char *p_warn_string) {
 #if defined(DEBUG_ENABLED) && defined(TOOLS_ENABLED)
 	const uint32_t warn_max = 2048;
 	const uint32_t warn_timeout_seconds = 15;
 	static uint32_t warn_count = warn_max;
 	static uint32_t warn_timeout = warn_timeout_seconds;
 	uint32_t time_now = UINT32_MAX;
 	if (warn_count) {
 		warn_count--;
 	}
 	if (!warn_count) {
 		time_now = OS::get_singleton()->get_ticks_msec() / 1000;
 	}
 	if ((warn_count == 0) && (time_now >= warn_timeout)) {
 		warn_count = warn_max;
 		warn_timeout = time_now + warn_timeout_seconds;
 		if (GLOBAL_GET("debug/settings/physics_interpolation/enable_warnings")) {
 			// UINT64_MAX means unused.
 			if (p_id.operator uint64_t() == UINT64_MAX) {
 				_err_print_error(p_function, p_file, p_line, "[Physics interpolation] " + String(p_warn_string) + " (possibly benign).", false, ERR_HANDLER_WARNING);
 			} else {
 				String node_name;
 				if (p_id.is_valid()) {
 					Node *node = Object::cast_to<Node>(ObjectDB::get_instance(p_id));
 					if (node && node->is_inside_tree()) {
 						node_name = "\"" + String(node->get_path()) + "\"";
 					} else {
 						node_name = "\"unknown\"";
 					}
 				}
 				_err_print_error(p_function, p_file, p_line, "[Physics interpolation] " + String(p_warn_string) + ": " + node_name + " (possibly benign).", false, ERR_HANDLER_WARNING);
 			}
 		}
 	}
 #endif
 }
--- a/engine/core/error/error_macros.h
+++ b/engine/core/error/error_macros.h
@ -31,6 +31,7 @@
 #ifndef ERROR_MACROS_H
 #define ERROR_MACROS_H
 #include "core/object/object_id.h"
 #include "core/typedefs.h"
 #include <atomic> // We'd normally use safe_refcount.h, but that would cause circular includes.
@ -67,10 +68,13 @@ void _err_print_error(const char *p_function, const char *p_file, int p_line, co
 void _err_print_error(const char *p_function, const char *p_file, int p_line, const String &p_error, const char *p_message, bool p_editor_notify = false, ErrorHandlerType p_type = ERR_HANDLER_ERROR);
 void _err_print_error(const char *p_function, const char *p_file, int p_line, const char *p_error, const String &p_message, bool p_editor_notify = false, ErrorHandlerType p_type = ERR_HANDLER_ERROR);
 void _err_print_error(const char *p_function, const char *p_file, int p_line, const String &p_error, const String &p_message, bool p_editor_notify = false, ErrorHandlerType p_type = ERR_HANDLER_ERROR);
 void _err_print_error_asap(const String &p_error, ErrorHandlerType p_type = ERR_HANDLER_ERROR);
 void _err_print_index_error(const char *p_function, const char *p_file, int p_line, int64_t p_index, int64_t p_size, const char *p_index_str, const char *p_size_str, const char *p_message = "", bool p_editor_notify = false, bool fatal = false);
 void _err_print_index_error(const char *p_function, const char *p_file, int p_line, int64_t p_index, int64_t p_size, const char *p_index_str, const char *p_size_str, const String &p_message, bool p_editor_notify = false, bool fatal = false);
 void _err_flush_stdout();
 void _physics_interpolation_warning(const char *p_function, const char *p_file, int p_line, ObjectID p_id, const char *p_warn_string);
 #ifdef __GNUC__
 //#define FUNCTION_STR __PRETTY_FUNCTION__ - too annoying
 #define FUNCTION_STR __FUNCTION__
@ -832,4 +836,14 @@ void _err_flush_stdout();
 #define DEV_CHECK_ONCE(m_cond)
 #endif
 /**
 * Physics Interpolation warnings.
 * These are spam protection warnings.
 */
 #define PHYSICS_INTERPOLATION_NODE_WARNING(m_object_id, m_string) \
 	_physics_interpolation_warning(FUNCTION_STR, __FILE__, __LINE__, m_object_id, m_string)
 #define PHYSICS_INTERPOLATION_WARNING(m_string) \
 	_physics_interpolation_warning(FUNCTION_STR, __FILE__, __LINE__, ObjectID(UINT64_MAX), m_string)
 #endif // ERROR_MACROS_H
--- a/engine/core/extension/SCsub
+++ b/engine/core/extension/SCsub
@ -1,4 +1,5 @@
 #!/usr/bin/env python
 from misc.utility.scons_hints import *
 Import("env")
--- a/engine/core/extension/extension_api_dump.cpp
+++ b/engine/core/extension/extension_api_dump.cpp
@ -32,7 +32,7 @@
 #include "core/config/engine.h"
 #include "core/core_constants.h"
-#include "core/extension/gdextension_compat_hashes.h"
+#include "core/extension/gdextension_special_compat_hashes.h"
 #include "core/io/file_access.h"
 #include "core/io/json.h"
 #include "core/templates/pair.h"
@ -60,6 +60,9 @@ static String get_property_info_type_name(const PropertyInfo &p_info) {
 	if (p_info.type == Variant::ARRAY && (p_info.hint == PROPERTY_HINT_ARRAY_TYPE)) {
 		return String("typedarray::") + p_info.hint_string;
 	}
 	if (p_info.type == Variant::DICTIONARY && (p_info.hint == PROPERTY_HINT_DICTIONARY_TYPE)) {
 		return String("typeddictionary::") + p_info.hint_string;
 	}
 	if (p_info.type == Variant::INT && (p_info.usage & (PROPERTY_USAGE_CLASS_IS_ENUM))) {
 		return String("enum::") + String(p_info.class_name);
 	}
@ -85,7 +88,7 @@ static String get_property_info_type_name(const PropertyInfo &p_info) {
 }
 static String get_type_meta_name(const GodotTypeInfo::Metadata metadata) {
-	static const char *argmeta[11] = { "none", "int8", "int16", "int32", "int64", "uint8", "uint16", "uint32", "uint64", "float", "double" };
+	static const char *argmeta[13] = { "none", "int8", "int16", "int32", "int64", "uint8", "uint16", "uint32", "uint64", "float", "double", "char16", "char32" };
 	return argmeta[metadata];
 }
@ -1014,9 +1017,22 @@ Dictionary GDExtensionAPIDump::generate_extension_api(bool p_include_docs) {
 						d2["name"] = String(method_name);
 						d2["is_const"] = (F.flags & METHOD_FLAG_CONST) ? true : false;
 						d2["is_static"] = (F.flags & METHOD_FLAG_STATIC) ? true : false;
 						d2["is_required"] = (F.flags & METHOD_FLAG_VIRTUAL_REQUIRED) ? true : false;
 						d2["is_vararg"] = false;
 						d2["is_virtual"] = true;
-						// virtual functions have no hash since no MethodBind is involved
+						d2["hash"] = mi.get_compatibility_hash();
 						Vector<uint32_t> compat_hashes = ClassDB::get_virtual_method_compatibility_hashes(class_name, method_name);
 						Array compatibility;
 						if (compat_hashes.size()) {
 							for (int i = 0; i < compat_hashes.size(); i++) {
 								compatibility.push_back(compat_hashes[i]);
 							}
 						}
 						if (compatibility.size() > 0) {
 							d2["hash_compatibility"] = compatibility;
 						}
 						bool has_return = mi.return_val.type != Variant::NIL || (mi.return_val.usage & PROPERTY_USAGE_NIL_IS_VARIANT);
 						if (has_return) {
 							PropertyInfo pinfo = mi.return_val;
@ -1090,7 +1106,7 @@ Dictionary GDExtensionAPIDump::generate_extension_api(bool p_include_docs) {
 						}
 #ifndef DISABLE_DEPRECATED
-						GDExtensionCompatHashes::get_legacy_hashes(class_name, method_name, compatibility);
+						GDExtensionSpecialCompatHashes::get_legacy_hashes(class_name, method_name, compatibility);
 #endif
 						if (compatibility.size() > 0) {
@ -1201,7 +1217,7 @@ Dictionary GDExtensionAPIDump::generate_extension_api(bool p_include_docs) {
 					if (F.name.begins_with("_")) {
 						continue; //hidden property
 					}
-					if (F.name.contains("/")) {
+					if (F.name.contains_char('/')) {
 						// Ignore properties with '/' (slash) in the name. These are only meant for use in the inspector.
 						continue;
 					}
@ -1359,7 +1375,7 @@ static bool compare_dict_array(const Dictionary &p_old_api, const Dictionary &p_
 		return true; // May just not have this array and its still good. Probably added recently.
 	}
 	bool failed = false;
-	ERR_FAIL_COND_V_MSG(!p_new_api.has(p_base_array), false, "New API lacks base array: " + p_base_array);
+	ERR_FAIL_COND_V_MSG(!p_new_api.has(p_base_array), false, vformat("New API lacks base array: %s", p_base_array));
 	Array new_api = p_new_api[p_base_array];
 	HashMap<String, Dictionary> new_api_assoc;
@ -1367,6 +1383,9 @@ static bool compare_dict_array(const Dictionary &p_old_api, const Dictionary &p_
 		Dictionary elem = var;
 		ERR_FAIL_COND_V_MSG(!elem.has(p_name_field), false, vformat("Validate extension JSON: Element of base_array '%s' is missing field '%s'. This is a bug.", base_array, p_name_field));
 		String name = elem[p_name_field];
 		if (name.is_valid_float()) {
 			name = name.trim_suffix(".0"); // Make "integers" stringified as integers.
 		}
 		if (p_compare_operators && elem.has("right_type")) {
 			name += " " + String(elem["right_type"]);
 		}
@ -1382,6 +1401,9 @@ static bool compare_dict_array(const Dictionary &p_old_api, const Dictionary &p_
 			continue;
 		}
 		String name = old_elem[p_name_field];
 		if (name.is_valid_float()) {
 			name = name.trim_suffix(".0"); // Make "integers" stringified as integers.
 		}
 		if (p_compare_operators && old_elem.has("right_type")) {
 			name += " " + String(old_elem["right_type"]);
 		}
@ -1463,8 +1485,8 @@ static bool compare_dict_array(const Dictionary &p_old_api, const Dictionary &p_
 		if (p_compare_hashes) {
 			if (!old_elem.has("hash")) {
-				if (old_elem.has("is_virtual") && bool(old_elem["is_virtual"]) && !new_elem.has("hash")) {
+				if (old_elem.has("is_virtual") && bool(old_elem["is_virtual"]) && !old_elem.has("hash")) {
-					continue; // No hash for virtual methods, go on.
+					continue; // Virtual methods didn't use to have hashes, so skip check if it's missing in the old file.
 				}
 				failed = true;
@ -1511,7 +1533,7 @@ static bool compare_sub_dict_array(HashSet<String> &r_removed_classes_registered
 		return true; // May just not have this array and its still good. Probably added recently or optional.
 	}
 	bool failed = false;
-	ERR_FAIL_COND_V_MSG(!p_new_api.has(p_outer), false, "New API lacks base array: " + p_outer);
+	ERR_FAIL_COND_V_MSG(!p_new_api.has(p_outer), false, vformat("New API lacks base array: %s", p_outer));
 	Array new_api = p_new_api[p_outer];
 	HashMap<String, Dictionary> new_api_assoc;
--- a/engine/core/extension/gdextension.cpp
+++ b/engine/core/extension/gdextension.cpp
@ -32,11 +32,9 @@
 #include "gdextension.compat.inc"
 #include "core/config/project_settings.h"
 #include "core/io/dir_access.h"
 #include "core/object/class_db.h"
 #include "core/object/method_bind.h"
-#include "core/os/os.h"
+#include "gdextension_library_loader.h"
 #include "core/version.h"
 #include "gdextension_manager.h"
 extern void gdextension_setup_interface();
@ -48,146 +46,6 @@ String GDExtension::get_extension_list_config_file() {
 	return ProjectSettings::get_singleton()->get_project_data_path().path_join("extension_list.cfg");
 }
 Vector<SharedObject> GDExtension::find_extension_dependencies(const String &p_path, Ref<ConfigFile> p_config, std::function<bool(String)> p_has_feature) {
 	Vector<SharedObject> dependencies_shared_objects;
 	if (p_config->has_section("dependencies")) {
 		List<String> config_dependencies;
 		p_config->get_section_keys("dependencies", &config_dependencies);
 		for (const String &dependency : config_dependencies) {
 			Vector<String> dependency_tags = dependency.split(".");
 			bool all_tags_met = true;
 			for (int i = 0; i < dependency_tags.size(); i++) {
 				String tag = dependency_tags[i].strip_edges();
 				if (!p_has_feature(tag)) {
 					all_tags_met = false;
 					break;
 				}
 			}
 			if (all_tags_met) {
 				Dictionary dependency_value = p_config->get_value("dependencies", dependency);
 				for (const Variant *key = dependency_value.next(nullptr); key; key = dependency_value.next(key)) {
 					String dependency_path = *key;
 					String target_path = dependency_value[*key];
 					if (dependency_path.is_relative_path()) {
 						dependency_path = p_path.get_base_dir().path_join(dependency_path);
 					}
 					dependencies_shared_objects.push_back(SharedObject(dependency_path, dependency_tags, target_path));
 				}
 				break;
 			}
 		}
 	}
 	return dependencies_shared_objects;
 }
 String GDExtension::find_extension_library(const String &p_path, Ref<ConfigFile> p_config, std::function<bool(String)> p_has_feature, PackedStringArray *r_tags) {
 	// First, check the explicit libraries.
 	if (p_config->has_section("libraries")) {
 		List<String> libraries;
 		p_config->get_section_keys("libraries", &libraries);
 		// Iterate the libraries, finding the best matching tags.
 		String best_library_path;
 		Vector<String> best_library_tags;
 		for (const String &E : libraries) {
 			Vector<String> tags = E.split(".");
 			bool all_tags_met = true;
 			for (int i = 0; i < tags.size(); i++) {
 				String tag = tags[i].strip_edges();
 				if (!p_has_feature(tag)) {
 					all_tags_met = false;
 					break;
 				}
 			}
 			if (all_tags_met && tags.size() > best_library_tags.size()) {
 				best_library_path = p_config->get_value("libraries", E);
 				best_library_tags = tags;
 			}
 		}
 		if (!best_library_path.is_empty()) {
 			if (best_library_path.is_relative_path()) {
 				best_library_path = p_path.get_base_dir().path_join(best_library_path);
 			}
 			if (r_tags != nullptr) {
 				r_tags->append_array(best_library_tags);
 			}
 			return best_library_path;
 		}
 	}
 	// Second, try to autodetect
 	String autodetect_library_prefix;
 	if (p_config->has_section_key("configuration", "autodetect_library_prefix")) {
 		autodetect_library_prefix = p_config->get_value("configuration", "autodetect_library_prefix");
 	}
 	if (!autodetect_library_prefix.is_empty()) {
 		String autodetect_path = autodetect_library_prefix;
 		if (autodetect_path.is_relative_path()) {
 			autodetect_path = p_path.get_base_dir().path_join(autodetect_path);
 		}
 		// Find the folder and file parts of the prefix.
 		String folder;
 		String file_prefix;
 		if (DirAccess::dir_exists_absolute(autodetect_path)) {
 			folder = autodetect_path;
 		} else if (DirAccess::dir_exists_absolute(autodetect_path.get_base_dir())) {
 			folder = autodetect_path.get_base_dir();
 			file_prefix = autodetect_path.get_file();
 		} else {
 			ERR_FAIL_V_MSG(String(), vformat("Error in extension: %s. Could not find folder for automatic detection of libraries files. autodetect_library_prefix=\"%s\"", p_path, autodetect_library_prefix));
 		}
 		// Open the folder.
 		Ref<DirAccess> dir = DirAccess::open(folder);
 		ERR_FAIL_COND_V_MSG(!dir.is_valid(), String(), vformat("Error in extension: %s. Could not open folder for automatic detection of libraries files. autodetect_library_prefix=\"%s\"", p_path, autodetect_library_prefix));
 		// Iterate the files and check the prefixes, finding the best matching file.
 		String best_file;
 		Vector<String> best_file_tags;
 		dir->list_dir_begin();
 		String file_name = dir->_get_next();
 		while (file_name != "") {
 			if (!dir->current_is_dir() && file_name.begins_with(file_prefix)) {
 				// Check if the files matches all requested feature tags.
 				String tags_str = file_name.trim_prefix(file_prefix);
 				tags_str = tags_str.trim_suffix(tags_str.get_extension());
 				Vector<String> tags = tags_str.split(".", false);
 				bool all_tags_met = true;
 				for (int i = 0; i < tags.size(); i++) {
 					String tag = tags[i].strip_edges();
 					if (!p_has_feature(tag)) {
 						all_tags_met = false;
 						break;
 					}
 				}
 				// If all tags are found in the feature list, and we found more tags than before, use this file.
 				if (all_tags_met && tags.size() > best_file_tags.size()) {
 					best_file_tags = tags;
 					best_file = file_name;
 				}
 			}
 			file_name = dir->_get_next();
 		}
 		if (!best_file.is_empty()) {
 			String library_path = folder.path_join(best_file);
 			if (r_tags != nullptr) {
 				r_tags->append_array(best_file_tags);
 			}
 			return library_path;
 		}
 	}
 	return String();
 }
 class GDExtensionMethodBind : public MethodBind {
 	GDExtensionClassMethodCall call_func;
 	GDExtensionClassMethodValidatedCall validated_call_func;
@ -296,7 +154,7 @@ public:
 	}
 	virtual bool is_vararg() const override {
-		return false;
+		return vararg;
 	}
 #ifdef TOOLS_ENABLED
@ -382,11 +240,12 @@ public:
 #ifndef DISABLE_DEPRECATED
 void GDExtension::_register_extension_class(GDExtensionClassLibraryPtr p_library, GDExtensionConstStringNamePtr p_class_name, GDExtensionConstStringNamePtr p_parent_class_name, const GDExtensionClassCreationInfo *p_extension_funcs) {
-	const GDExtensionClassCreationInfo3 class_info3 = {
+	const GDExtensionClassCreationInfo4 class_info4 = {
 		p_extension_funcs->is_virtual, // GDExtensionBool is_virtual;
 		p_extension_funcs->is_abstract, // GDExtensionBool is_abstract;
 		true, // GDExtensionBool is_exposed;
 		false, // GDExtensionBool is_runtime;
 		nullptr, // GDExtensionConstStringPtr icon_path;
 		p_extension_funcs->set_func, // GDExtensionClassSet set_func;
 		p_extension_funcs->get_func, // GDExtensionClassGet get_func;
 		p_extension_funcs->get_property_list_func, // GDExtensionClassGetPropertyList get_property_list_func;
@ -398,29 +257,33 @@ void GDExtension::_register_extension_class(GDExtensionClassLibraryPtr p_library
 		p_extension_funcs->to_string_func, // GDExtensionClassToString to_string_func;
 		p_extension_funcs->reference_func, // GDExtensionClassReference reference_func;
 		p_extension_funcs->unreference_func, // GDExtensionClassUnreference unreference_func;
-		p_extension_funcs->create_instance_func, // GDExtensionClassCreateInstance create_instance_func; /* this one is mandatory */
+		nullptr, // GDExtensionClassCreateInstance2 create_instance_func; /* this one is mandatory */
 		p_extension_funcs->free_instance_func, // GDExtensionClassFreeInstance free_instance_func; /* this one is mandatory */
 		nullptr, // GDExtensionClassRecreateInstance recreate_instance_func;
-		p_extension_funcs->get_virtual_func, // GDExtensionClassGetVirtual get_virtual_func;
+		nullptr, // GDExtensionClassGetVirtual get_virtual_func;
 		nullptr, // GDExtensionClassGetVirtualCallData get_virtual_call_data_func;
 		nullptr, // GDExtensionClassCallVirtualWithData call_virtual_func;
 		p_extension_funcs->get_rid_func, // GDExtensionClassGetRID get_rid;
 		p_extension_funcs->class_userdata, // void *class_userdata;
 	};
 	const ClassCreationDeprecatedInfo legacy = {
 		p_extension_funcs->notification_func, // GDExtensionClassNotification notification_func;
 		p_extension_funcs->free_property_list_func, // GDExtensionClassFreePropertyList free_property_list_func;
 		p_extension_funcs->create_instance_func, // GDExtensionClassCreateInstance create_instance_func;
 		p_extension_funcs->get_rid_func, // GDExtensionClassGetRID get_rid;
 		p_extension_funcs->get_virtual_func, // GDExtensionClassGetVirtual get_virtual_func;
 		nullptr,
 	};
-	_register_extension_class_internal(p_library, p_class_name, p_parent_class_name, &class_info3, &legacy);
+	_register_extension_class_internal(p_library, p_class_name, p_parent_class_name, &class_info4, &legacy);
 }
 void GDExtension::_register_extension_class2(GDExtensionClassLibraryPtr p_library, GDExtensionConstStringNamePtr p_class_name, GDExtensionConstStringNamePtr p_parent_class_name, const GDExtensionClassCreationInfo2 *p_extension_funcs) {
-	const GDExtensionClassCreationInfo3 class_info3 = {
+	const GDExtensionClassCreationInfo4 class_info4 = {
 		p_extension_funcs->is_virtual, // GDExtensionBool is_virtual;
 		p_extension_funcs->is_abstract, // GDExtensionBool is_abstract;
 		p_extension_funcs->is_exposed, // GDExtensionBool is_exposed;
 		false, // GDExtensionBool is_runtime;
 		nullptr, // GDExtensionConstStringPtr icon_path;
 		p_extension_funcs->set_func, // GDExtensionClassSet set_func;
 		p_extension_funcs->get_func, // GDExtensionClassGet get_func;
 		p_extension_funcs->get_property_list_func, // GDExtensionClassGetPropertyList get_property_list_func;
@ -432,35 +295,77 @@ void GDExtension::_register_extension_class2(GDExtensionClassLibraryPtr p_librar
 		p_extension_funcs->to_string_func, // GDExtensionClassToString to_string_func;
 		p_extension_funcs->reference_func, // GDExtensionClassReference reference_func;
 		p_extension_funcs->unreference_func, // GDExtensionClassUnreference unreference_func;
-		p_extension_funcs->create_instance_func, // GDExtensionClassCreateInstance create_instance_func; /* this one is mandatory */
+		nullptr, // GDExtensionClassCreateInstance2 create_instance_func; /* this one is mandatory */
 		p_extension_funcs->free_instance_func, // GDExtensionClassFreeInstance free_instance_func; /* this one is mandatory */
 		p_extension_funcs->recreate_instance_func, // GDExtensionClassRecreateInstance recreate_instance_func;
-		p_extension_funcs->get_virtual_func, // GDExtensionClassGetVirtual get_virtual_func;
+		nullptr, // GDExtensionClassGetVirtual get_virtual_func;
-		p_extension_funcs->get_virtual_call_data_func, // GDExtensionClassGetVirtualCallData get_virtual_call_data_func;
+		nullptr, // GDExtensionClassGetVirtualCallData get_virtual_call_data_func;
 		p_extension_funcs->call_virtual_with_data_func, // GDExtensionClassCallVirtualWithData call_virtual_func;
 		p_extension_funcs->get_rid_func, // GDExtensionClassGetRID get_rid;
 		p_extension_funcs->class_userdata, // void *class_userdata;
 	};
 	const ClassCreationDeprecatedInfo legacy = {
 		nullptr, // GDExtensionClassNotification notification_func;
 		p_extension_funcs->free_property_list_func, // GDExtensionClassFreePropertyList free_property_list_func;
 		p_extension_funcs->create_instance_func, // GDExtensionClassCreateInstance create_instance_func;
 		p_extension_funcs->get_rid_func, // GDExtensionClassGetRID get_rid;
 		p_extension_funcs->get_virtual_func, // GDExtensionClassGetVirtual get_virtual_func;
 		p_extension_funcs->get_virtual_call_data_func, // GDExtensionClassGetVirtual get_virtual_func;
 	};
-	_register_extension_class_internal(p_library, p_class_name, p_parent_class_name, &class_info3, &legacy);
+	_register_extension_class_internal(p_library, p_class_name, p_parent_class_name, &class_info4, &legacy);
 }
 #endif // DISABLE_DEPRECATED
 void GDExtension::_register_extension_class3(GDExtensionClassLibraryPtr p_library, GDExtensionConstStringNamePtr p_class_name, GDExtensionConstStringNamePtr p_parent_class_name, const GDExtensionClassCreationInfo3 *p_extension_funcs) {
 	const GDExtensionClassCreationInfo4 class_info4 = {
 		p_extension_funcs->is_virtual, // GDExtensionBool is_virtual;
 		p_extension_funcs->is_abstract, // GDExtensionBool is_abstract;
 		p_extension_funcs->is_exposed, // GDExtensionBool is_exposed;
 		p_extension_funcs->is_runtime, // GDExtensionBool is_runtime;
 		nullptr, // GDExtensionConstStringPtr icon_path;
 		p_extension_funcs->set_func, // GDExtensionClassSet set_func;
 		p_extension_funcs->get_func, // GDExtensionClassGet get_func;
 		p_extension_funcs->get_property_list_func, // GDExtensionClassGetPropertyList get_property_list_func;
 		p_extension_funcs->free_property_list_func, // GDExtensionClassFreePropertyList free_property_list_func;
 		p_extension_funcs->property_can_revert_func, // GDExtensionClassPropertyCanRevert property_can_revert_func;
 		p_extension_funcs->property_get_revert_func, // GDExtensionClassPropertyGetRevert property_get_revert_func;
 		p_extension_funcs->validate_property_func, // GDExtensionClassValidateProperty validate_property_func;
 		p_extension_funcs->notification_func, // GDExtensionClassNotification2 notification_func;
 		p_extension_funcs->to_string_func, // GDExtensionClassToString to_string_func;
 		p_extension_funcs->reference_func, // GDExtensionClassReference reference_func;
 		p_extension_funcs->unreference_func, // GDExtensionClassUnreference unreference_func;
 		nullptr, // GDExtensionClassCreateInstance2 create_instance_func; /* this one is mandatory */
 		p_extension_funcs->free_instance_func, // GDExtensionClassFreeInstance free_instance_func; /* this one is mandatory */
 		p_extension_funcs->recreate_instance_func, // GDExtensionClassRecreateInstance recreate_instance_func;
 		nullptr, // GDExtensionClassGetVirtual get_virtual_func;
 		nullptr, // GDExtensionClassGetVirtualCallData get_virtual_call_data_func;
 		p_extension_funcs->call_virtual_with_data_func, // GDExtensionClassCallVirtualWithData call_virtual_func;
 		p_extension_funcs->class_userdata, // void *class_userdata;
 	};
 	const ClassCreationDeprecatedInfo legacy = {
 		nullptr, // GDExtensionClassNotification notification_func;
 		nullptr, // GDExtensionClassFreePropertyList free_property_list_func;
 		p_extension_funcs->create_instance_func, // GDExtensionClassCreateInstance2 create_instance_func;
 		p_extension_funcs->get_rid_func, // GDExtensionClassGetRID get_rid;
 		p_extension_funcs->get_virtual_func, // GDExtensionClassGetVirtual get_virtual_func;
 		p_extension_funcs->get_virtual_call_data_func, // GDExtensionClassGetVirtual get_virtual_func;
 	};
 	_register_extension_class_internal(p_library, p_class_name, p_parent_class_name, &class_info4, &legacy);
 }
 #endif // DISABLE_DEPRECATED
 void GDExtension::_register_extension_class4(GDExtensionClassLibraryPtr p_library, GDExtensionConstStringNamePtr p_class_name, GDExtensionConstStringNamePtr p_parent_class_name, const GDExtensionClassCreationInfo4 *p_extension_funcs) {
 	_register_extension_class_internal(p_library, p_class_name, p_parent_class_name, p_extension_funcs);
 }
-void GDExtension::_register_extension_class_internal(GDExtensionClassLibraryPtr p_library, GDExtensionConstStringNamePtr p_class_name, GDExtensionConstStringNamePtr p_parent_class_name, const GDExtensionClassCreationInfo3 *p_extension_funcs, const ClassCreationDeprecatedInfo *p_deprecated_funcs) {
+void GDExtension::_register_extension_class_internal(GDExtensionClassLibraryPtr p_library, GDExtensionConstStringNamePtr p_class_name, GDExtensionConstStringNamePtr p_parent_class_name, const GDExtensionClassCreationInfo4 *p_extension_funcs, const ClassCreationDeprecatedInfo *p_deprecated_funcs) {
 	GDExtension *self = reinterpret_cast<GDExtension *>(p_library);
 	StringName class_name = *reinterpret_cast<const StringName *>(p_class_name);
 	StringName parent_class_name = *reinterpret_cast<const StringName *>(p_parent_class_name);
-	ERR_FAIL_COND_MSG(!String(class_name).is_valid_identifier(), "Attempt to register extension class '" + class_name + "', which is not a valid class identifier.");
+	ERR_FAIL_COND_MSG(!String(class_name).is_valid_unicode_identifier(), vformat("Attempt to register extension class '%s', which is not a valid class identifier.", class_name));
-	ERR_FAIL_COND_MSG(ClassDB::class_exists(class_name), "Attempt to register extension class '" + class_name + "', which appears to be already registered.");
+	ERR_FAIL_COND_MSG(ClassDB::class_exists(class_name), vformat("Attempt to register extension class '%s', which appears to be already registered.", class_name));
 	Extension *parent_extension = nullptr;
@ -474,7 +379,7 @@ void GDExtension::_register_extension_class_internal(GDExtensionClassLibraryPtr
 			//inheriting from engine class
 		}
 	} else {
-		ERR_FAIL_MSG("Attempt to register an extension class '" + String(class_name) + "' using non-existing parent class '" + String(parent_class_name) + "'.");
+		ERR_FAIL_MSG(vformat("Attempt to register an extension class '%s' using non-existing parent class '%s'.", String(class_name), String(parent_class_name)));
 	}
 #ifdef TOOLS_ENABLED
@ -530,6 +435,10 @@ void GDExtension::_register_extension_class_internal(GDExtensionClassLibraryPtr
 	if (p_deprecated_funcs) {
 		extension->gdextension.notification = p_deprecated_funcs->notification_func;
 		extension->gdextension.free_property_list = p_deprecated_funcs->free_property_list_func;
 		extension->gdextension.create_instance = p_deprecated_funcs->create_instance_func;
 		extension->gdextension.get_rid = p_deprecated_funcs->get_rid_func;
 		extension->gdextension.get_virtual = p_deprecated_funcs->get_virtual_func;
 		extension->gdextension.get_virtual_call_data = p_deprecated_funcs->get_virtual_call_data_func;
 	}
 #endif // DISABLE_DEPRECATED
 	extension->gdextension.notification2 = p_extension_funcs->notification_func;
@ -537,13 +446,12 @@ void GDExtension::_register_extension_class_internal(GDExtensionClassLibraryPtr
 	extension->gdextension.reference = p_extension_funcs->reference_func;
 	extension->gdextension.unreference = p_extension_funcs->unreference_func;
 	extension->gdextension.class_userdata = p_extension_funcs->class_userdata;
-	extension->gdextension.create_instance = p_extension_funcs->create_instance_func;
+	extension->gdextension.create_instance2 = p_extension_funcs->create_instance_func;
 	extension->gdextension.free_instance = p_extension_funcs->free_instance_func;
 	extension->gdextension.recreate_instance = p_extension_funcs->recreate_instance_func;
-	extension->gdextension.get_virtual = p_extension_funcs->get_virtual_func;
+	extension->gdextension.get_virtual2 = p_extension_funcs->get_virtual_func;
-	extension->gdextension.get_virtual_call_data = p_extension_funcs->get_virtual_call_data_func;
+	extension->gdextension.get_virtual_call_data2 = p_extension_funcs->get_virtual_call_data_func;
 	extension->gdextension.call_virtual_with_data = p_extension_funcs->call_virtual_with_data_func;
 	extension->gdextension.get_rid = p_extension_funcs->get_rid_func;
 	extension->gdextension.reloadable = self->reloadable;
 #ifdef TOOLS_ENABLED
@ -559,6 +467,13 @@ void GDExtension::_register_extension_class_internal(GDExtensionClassLibraryPtr
 #endif
 	ClassDB::register_extension_class(&extension->gdextension);
 	if (p_extension_funcs->icon_path != nullptr) {
 		const String icon_path = *reinterpret_cast<const String *>(p_extension_funcs->icon_path);
 		if (!icon_path.is_empty()) {
 			self->class_icon_paths[class_name] = icon_path;
 		}
 	}
 }
 void GDExtension::_register_extension_class_method(GDExtensionClassLibraryPtr p_library, GDExtensionConstStringNamePtr p_class_name, const GDExtensionClassMethodInfo *p_method_info) {
@ -566,7 +481,7 @@ void GDExtension::_register_extension_class_method(GDExtensionClassLibraryPtr p_
 	StringName class_name = *reinterpret_cast<const StringName *>(p_class_name);
 	StringName method_name = *reinterpret_cast<const StringName *>(p_method_info->name);
-	ERR_FAIL_COND_MSG(!self->extension_classes.has(class_name), "Attempt to register extension method '" + String(method_name) + "' for unexisting class '" + class_name + "'.");
+	ERR_FAIL_COND_MSG(!self->extension_classes.has(class_name), vformat("Attempt to register extension method '%s' for unexisting class '%s'.", String(method_name), class_name));
 #ifdef TOOLS_ENABLED
 	Extension *extension = &self->extension_classes[class_name];
@ -616,7 +531,7 @@ void GDExtension::_register_extension_class_integer_constant(GDExtensionClassLib
 	StringName class_name = *reinterpret_cast<const StringName *>(p_class_name);
 	StringName enum_name = *reinterpret_cast<const StringName *>(p_enum_name);
 	StringName constant_name = *reinterpret_cast<const StringName *>(p_constant_name);
-	ERR_FAIL_COND_MSG(!self->extension_classes.has(class_name), "Attempt to register extension constant '" + constant_name + "' for unexisting class '" + class_name + "'.");
+	ERR_FAIL_COND_MSG(!self->extension_classes.has(class_name), vformat("Attempt to register extension constant '%s' for unexisting class '%s'.", constant_name, class_name));
 #ifdef TOOLS_ENABLED
 	// If the extension is still marked as reloading, that means it failed to register again.
@ -640,7 +555,7 @@ void GDExtension::_register_extension_class_property_indexed(GDExtensionClassLib
 	StringName setter = *reinterpret_cast<const StringName *>(p_setter);
 	StringName getter = *reinterpret_cast<const StringName *>(p_getter);
 	String property_name = *reinterpret_cast<const StringName *>(p_info->name);
-	ERR_FAIL_COND_MSG(!self->extension_classes.has(class_name), "Attempt to register extension class property '" + property_name + "' for unexisting class '" + class_name + "'.");
+	ERR_FAIL_COND_MSG(!self->extension_classes.has(class_name), vformat("Attempt to register extension class property '%s' for unexisting class '%s'.", property_name, class_name));
 #ifdef TOOLS_ENABLED
 	// If the extension is still marked as reloading, that means it failed to register again.
@ -661,7 +576,7 @@ void GDExtension::_register_extension_class_property_group(GDExtensionClassLibra
 	StringName class_name = *reinterpret_cast<const StringName *>(p_class_name);
 	String group_name = *reinterpret_cast<const String *>(p_group_name);
 	String prefix = *reinterpret_cast<const String *>(p_prefix);
-	ERR_FAIL_COND_MSG(!self->extension_classes.has(class_name), "Attempt to register extension class property group '" + group_name + "' for unexisting class '" + class_name + "'.");
+	ERR_FAIL_COND_MSG(!self->extension_classes.has(class_name), vformat("Attempt to register extension class property group '%s' for unexisting class '%s'.", group_name, class_name));
 #ifdef TOOLS_ENABLED
 	// If the extension is still marked as reloading, that means it failed to register again.
@ -680,7 +595,7 @@ void GDExtension::_register_extension_class_property_subgroup(GDExtensionClassLi
 	StringName class_name = *reinterpret_cast<const StringName *>(p_class_name);
 	String subgroup_name = *reinterpret_cast<const String *>(p_subgroup_name);
 	String prefix = *reinterpret_cast<const String *>(p_prefix);
-	ERR_FAIL_COND_MSG(!self->extension_classes.has(class_name), "Attempt to register extension class property subgroup '" + subgroup_name + "' for unexisting class '" + class_name + "'.");
+	ERR_FAIL_COND_MSG(!self->extension_classes.has(class_name), vformat("Attempt to register extension class property subgroup '%s' for unexisting class '%s'.", subgroup_name, class_name));
 #ifdef TOOLS_ENABLED
 	// If the extension is still marked as reloading, that means it failed to register again.
@ -698,7 +613,7 @@ void GDExtension::_register_extension_class_signal(GDExtensionClassLibraryPtr p_
 	StringName class_name = *reinterpret_cast<const StringName *>(p_class_name);
 	StringName signal_name = *reinterpret_cast<const StringName *>(p_signal_name);
-	ERR_FAIL_COND_MSG(!self->extension_classes.has(class_name), "Attempt to register extension class signal '" + signal_name + "' for unexisting class '" + class_name + "'.");
+	ERR_FAIL_COND_MSG(!self->extension_classes.has(class_name), vformat("Attempt to register extension class signal '%s' for unexisting class '%s'.", signal_name, class_name));
 #ifdef TOOLS_ENABLED
 	// If the extension is still marked as reloading, that means it failed to register again.
@ -721,7 +636,7 @@ void GDExtension::_unregister_extension_class(GDExtensionClassLibraryPtr p_libra
 	GDExtension *self = reinterpret_cast<GDExtension *>(p_library);
 	StringName class_name = *reinterpret_cast<const StringName *>(p_class_name);
-	ERR_FAIL_COND_MSG(!self->extension_classes.has(class_name), "Attempt to unregister unexisting extension class '" + class_name + "'.");
+	ERR_FAIL_COND_MSG(!self->extension_classes.has(class_name), vformat("Attempt to unregister unexisting extension class '%s'.", class_name));
 	Extension *ext = &self->extension_classes[class_name];
 #ifdef TOOLS_ENABLED
@ -729,7 +644,7 @@ void GDExtension::_unregister_extension_class(GDExtensionClassLibraryPtr p_libra
 		self->_clear_extension(ext);
 	}
 #endif
-	ERR_FAIL_COND_MSG(ext->gdextension.children.size(), "Attempt to unregister class '" + class_name + "' while other extension classes inherit from it.");
+	ERR_FAIL_COND_MSG(ext->gdextension.children.size(), vformat("Attempt to unregister class '%s' while other extension classes inherit from it.", class_name));
 #ifdef TOOLS_ENABLED
 	ClassDB::unregister_extension_class(class_name, !ext->is_reloading);
@ -755,80 +670,54 @@ void GDExtension::_unregister_extension_class(GDExtensionClassLibraryPtr p_libra
 void GDExtension::_get_library_path(GDExtensionClassLibraryPtr p_library, GDExtensionUninitializedStringPtr r_path) {
 	GDExtension *self = reinterpret_cast<GDExtension *>(p_library);
-	memnew_placement(r_path, String(self->library_path));
+	Ref<GDExtensionLibraryLoader> library_loader = self->loader;
 	String library_path;
 	if (library_loader.is_valid()) {
 		library_path = library_loader->library_path;
 	}
 	memnew_placement(r_path, String(library_path));
 }
 HashMap<StringName, GDExtensionInterfaceFunctionPtr> GDExtension::gdextension_interface_functions;
 void GDExtension::register_interface_function(const StringName &p_function_name, GDExtensionInterfaceFunctionPtr p_function_pointer) {
-	ERR_FAIL_COND_MSG(gdextension_interface_functions.has(p_function_name), "Attempt to register interface function '" + p_function_name + "', which appears to be already registered.");
+	ERR_FAIL_COND_MSG(gdextension_interface_functions.has(p_function_name), vformat("Attempt to register interface function '%s', which appears to be already registered.", p_function_name));
 	gdextension_interface_functions.insert(p_function_name, p_function_pointer);
 }
 GDExtensionInterfaceFunctionPtr GDExtension::get_interface_function(const StringName &p_function_name) {
 	GDExtensionInterfaceFunctionPtr *function = gdextension_interface_functions.getptr(p_function_name);
-	ERR_FAIL_NULL_V_MSG(function, nullptr, "Attempt to get non-existent interface function: " + String(p_function_name) + ".");
+	ERR_FAIL_NULL_V_MSG(function, nullptr, vformat("Attempt to get non-existent interface function: '%s'.", String(p_function_name)));
 	return *function;
 }
-Error GDExtension::open_library(const String &p_path, const String &p_entry_symbol, Vector<SharedObject> *p_dependencies) {
+Error GDExtension::open_library(const String &p_path, const Ref<GDExtensionLoader> &p_loader) {
-	String abs_path = ProjectSettings::get_singleton()->globalize_path(p_path);
+	ERR_FAIL_COND_V_MSG(p_loader.is_null(), FAILED, "Can't open GDExtension without a loader.");
 	loader = p_loader;
-	Vector<String> abs_dependencies_paths;
+	Error err = loader->open_library(p_path);
 	if (p_dependencies != nullptr && !p_dependencies->is_empty()) {
 		for (const SharedObject &dependency : *p_dependencies) {
 			abs_dependencies_paths.push_back(ProjectSettings::get_singleton()->globalize_path(dependency.path));
 		}
 	}
-	String actual_lib_path;
+	ERR_FAIL_COND_V_MSG(err == ERR_FILE_NOT_FOUND, err, vformat("GDExtension dynamic library not found: '%s'.", p_path));
-	OS::GDExtensionData data = {
+	ERR_FAIL_COND_V_MSG(err != OK, err, vformat("Can't open GDExtension dynamic library: '%s'.", p_path));
 		true, // also_set_library_path
 		&actual_lib_path, // r_resolved_path
 		Engine::get_singleton()->is_editor_hint(), // generate_temp_files
 		&abs_dependencies_paths, // library_dependencies
 	};
 	Error err = OS::get_singleton()->open_dynamic_library(abs_path, library, &data);
-	if (actual_lib_path.get_file() != abs_path.get_file()) {
+	err = loader->initialize(&gdextension_get_proc_address, this, &initialization);
 		// If temporary files are generated, let's change the library path to point at the original,
 		// because that's what we want to check to see if it's changed.
 		library_path = actual_lib_path.get_base_dir().path_join(p_path.get_file());
 	} else {
 		library_path = actual_lib_path;
 	}
 	ERR_FAIL_COND_V_MSG(err == ERR_FILE_NOT_FOUND, err, "GDExtension dynamic library not found: " + abs_path);
 	ERR_FAIL_COND_V_MSG(err != OK, err, "Can't open GDExtension dynamic library: " + abs_path);
 	void *entry_funcptr = nullptr;
 	err = OS::get_singleton()->get_dynamic_library_symbol_handle(library, p_entry_symbol, entry_funcptr, false);
 	if (err != OK) {
-		ERR_PRINT("GDExtension entry point '" + p_entry_symbol + "' not found in library " + abs_path);
+		// Errors already logged in initialize().
-		OS::get_singleton()->close_dynamic_library(library);
+		loader->close_library();
 		return err;
 	}
-	GDExtensionInitializationFunction initialization_function = (GDExtensionInitializationFunction)entry_funcptr;
+	level_initialized = -1;
 	GDExtensionBool ret = initialization_function(&gdextension_get_proc_address, this, &initialization);
-	if (ret) {
+	return OK;
 		level_initialized = -1;
 		return OK;
 	} else {
 		ERR_PRINT("GDExtension initialization function '" + p_entry_symbol + "' returned an error.");
 		OS::get_singleton()->close_dynamic_library(library);
 		return FAILED;
 	}
 }
 void GDExtension::close_library() {
-	ERR_FAIL_NULL(library);
+	ERR_FAIL_COND(!is_library_open());
-	OS::get_singleton()->close_dynamic_library(library);
+	loader->close_library();
 	library = nullptr;
 	class_icon_paths.clear();
 #ifdef TOOLS_ENABLED
@ -837,16 +726,16 @@ void GDExtension::close_library() {
 }
 bool GDExtension::is_library_open() const {
-	return library != nullptr;
+	return loader.is_valid() && loader->is_library_open();
 }
 GDExtension::InitializationLevel GDExtension::get_minimum_library_initialization_level() const {
-	ERR_FAIL_NULL_V(library, INITIALIZATION_LEVEL_CORE);
+	ERR_FAIL_COND_V(!is_library_open(), INITIALIZATION_LEVEL_CORE);
 	return InitializationLevel(initialization.minimum_initialization_level);
 }
 void GDExtension::initialize_library(InitializationLevel p_level) {
-	ERR_FAIL_NULL(library);
+	ERR_FAIL_COND(!is_library_open());
 	ERR_FAIL_COND_MSG(p_level <= int32_t(level_initialized), vformat("Level '%d' must be higher than the current level '%d'", p_level, level_initialized));
 	level_initialized = int32_t(p_level);
@ -856,7 +745,7 @@ void GDExtension::initialize_library(InitializationLevel p_level) {
 	initialization.initialize(initialization.userdata, GDExtensionInitializationLevel(p_level));
 }
 void GDExtension::deinitialize_library(InitializationLevel p_level) {
-	ERR_FAIL_NULL(library);
+	ERR_FAIL_COND(!is_library_open());
 	ERR_FAIL_COND(p_level > int32_t(level_initialized));
 	level_initialized = int32_t(p_level) - 1;
@ -880,7 +769,7 @@ GDExtension::GDExtension() {
 }
 GDExtension::~GDExtension() {
-	if (library != nullptr) {
+	if (is_library_open()) {
 		close_library();
 	}
 #ifdef TOOLS_ENABLED
@ -897,8 +786,9 @@ void GDExtension::initialize_gdextensions() {
 #ifndef DISABLE_DEPRECATED
 	register_interface_function("classdb_register_extension_class", (GDExtensionInterfaceFunctionPtr)&GDExtension::_register_extension_class);
 	register_interface_function("classdb_register_extension_class2", (GDExtensionInterfaceFunctionPtr)&GDExtension::_register_extension_class2);
 #endif // DISABLE_DEPRECATED
 	register_interface_function("classdb_register_extension_class3", (GDExtensionInterfaceFunctionPtr)&GDExtension::_register_extension_class3);
 #endif // DISABLE_DEPRECATED
 	register_interface_function("classdb_register_extension_class4", (GDExtensionInterfaceFunctionPtr)&GDExtension::_register_extension_class4);
 	register_interface_function("classdb_register_extension_class_method", (GDExtensionInterfaceFunctionPtr)&GDExtension::_register_extension_class_method);
 	register_interface_function("classdb_register_extension_class_virtual_method", (GDExtensionInterfaceFunctionPtr)&GDExtension::_register_extension_class_virtual_method);
 	register_interface_function("classdb_register_extension_class_integer_constant", (GDExtensionInterfaceFunctionPtr)&GDExtension::_register_extension_class_integer_constant);
@ -918,142 +808,15 @@ void GDExtension::finalize_gdextensions() {
 Error GDExtensionResourceLoader::load_gdextension_resource(const String &p_path, Ref<GDExtension> &p_extension) {
 	ERR_FAIL_COND_V_MSG(p_extension.is_valid() && p_extension->is_library_open(), ERR_ALREADY_IN_USE, "Cannot load GDExtension resource into already opened library.");
-	Ref<ConfigFile> config;
+	GDExtensionManager *extension_manager = GDExtensionManager::get_singleton();
 	config.instantiate();
-	Error err = config->load(p_path);
+	GDExtensionManager::LoadStatus status = extension_manager->load_extension(p_path);
-
+	if (status != GDExtensionManager::LOAD_STATUS_OK && status != GDExtensionManager::LOAD_STATUS_ALREADY_LOADED) {
-	if (err != OK) {
+		// Errors already logged in load_extension().
-		ERR_PRINT("Error loading GDExtension configuration file: " + p_path);
+		return FAILED;
 		return err;
 	}
 	if (!config->has_section_key("configuration", "entry_symbol")) {
 		ERR_PRINT("GDExtension configuration file must contain a \"configuration/entry_symbol\" key: " + p_path);
 		return ERR_INVALID_DATA;
 	}
 	String entry_symbol = config->get_value("configuration", "entry_symbol");
 	uint32_t compatibility_minimum[3] = { 0, 0, 0 };
 	if (config->has_section_key("configuration", "compatibility_minimum")) {
 		String compat_string = config->get_value("configuration", "compatibility_minimum");
 		Vector<int> parts = compat_string.split_ints(".");
 		for (int i = 0; i < parts.size(); i++) {
 			if (i >= 3) {
 				break;
 			}
 			if (parts[i] >= 0) {
 				compatibility_minimum[i] = parts[i];
 			}
 		}
 	} else {
 		ERR_PRINT("GDExtension configuration file must contain a \"configuration/compatibility_minimum\" key: " + p_path);
 		return ERR_INVALID_DATA;
 	}
 	if (compatibility_minimum[0] < 4 || (compatibility_minimum[0] == 4 && compatibility_minimum[1] == 0)) {
 		ERR_PRINT(vformat("GDExtension's compatibility_minimum (%d.%d.%d) must be at least 4.1.0: %s", compatibility_minimum[0], compatibility_minimum[1], compatibility_minimum[2], p_path));
 		return ERR_INVALID_DATA;
 	}
 	bool compatible = true;
 	// Check version lexicographically.
 	if (VERSION_MAJOR != compatibility_minimum[0]) {
 		compatible = VERSION_MAJOR > compatibility_minimum[0];
 	} else if (VERSION_MINOR != compatibility_minimum[1]) {
 		compatible = VERSION_MINOR > compatibility_minimum[1];
 	} else {
 		compatible = VERSION_PATCH >= compatibility_minimum[2];
 	}
 	if (!compatible) {
 		ERR_PRINT(vformat("GDExtension only compatible with Godot version %d.%d.%d or later: %s", compatibility_minimum[0], compatibility_minimum[1], compatibility_minimum[2], p_path));
 		return ERR_INVALID_DATA;
 	}
 	// Optionally check maximum compatibility.
 	if (config->has_section_key("configuration", "compatibility_maximum")) {
 		uint32_t compatibility_maximum[3] = { 0, 0, 0 };
 		String compat_string = config->get_value("configuration", "compatibility_maximum");
 		Vector<int> parts = compat_string.split_ints(".");
 		for (int i = 0; i < 3; i++) {
 			if (i < parts.size() && parts[i] >= 0) {
 				compatibility_maximum[i] = parts[i];
 			} else {
 				// If a version part is missing, set the maximum to an arbitrary high value.
 				compatibility_maximum[i] = 9999;
 			}
 		}
 		compatible = true;
 		if (VERSION_MAJOR != compatibility_maximum[0]) {
 			compatible = VERSION_MAJOR < compatibility_maximum[0];
 		} else if (VERSION_MINOR != compatibility_maximum[1]) {
 			compatible = VERSION_MINOR < compatibility_maximum[1];
 		}
 #if VERSION_PATCH
 		// #if check to avoid -Wtype-limits warning when 0.
 		else {
 			compatible = VERSION_PATCH <= compatibility_maximum[2];
 		}
 #endif
 		if (!compatible) {
 			ERR_PRINT(vformat("GDExtension only compatible with Godot version %s or earlier: %s", compat_string, p_path));
 			return ERR_INVALID_DATA;
 		}
 	}
 	String library_path = GDExtension::find_extension_library(p_path, config, [](const String &p_feature) { return OS::get_singleton()->has_feature(p_feature); });
 	if (library_path.is_empty()) {
 		const String os_arch = OS::get_singleton()->get_name().to_lower() + "." + Engine::get_singleton()->get_architecture_name();
 		ERR_PRINT(vformat("No GDExtension library found for current OS and architecture (%s) in configuration file: %s", os_arch, p_path));
 		return ERR_FILE_NOT_FOUND;
 	}
 	bool is_static_library = library_path.ends_with(".a") || library_path.ends_with(".xcframework");
 	if (!library_path.is_resource_file() && !library_path.is_absolute_path()) {
 		library_path = p_path.get_base_dir().path_join(library_path);
 	}
 	if (p_extension.is_null()) {
 		p_extension.instantiate();
 	}
 #ifdef TOOLS_ENABLED
 	p_extension->set_reloadable(config->get_value("configuration", "reloadable", false) && Engine::get_singleton()->is_extension_reloading_enabled());
 	p_extension->update_last_modified_time(
 			FileAccess::get_modified_time(p_path),
 			FileAccess::get_modified_time(library_path));
 #endif
 	Vector<SharedObject> library_dependencies = GDExtension::find_extension_dependencies(p_path, config, [](const String &p_feature) { return OS::get_singleton()->has_feature(p_feature); });
 	err = p_extension->open_library(is_static_library ? String() : library_path, entry_symbol, &library_dependencies);
 	if (err != OK) {
 		// Unreference the extension so that this loading can be considered a failure.
 		p_extension.unref();
 		// Errors already logged in open_library()
 		return err;
 	}
 	// Handle icons if any are specified.
 	if (config->has_section("icons")) {
 		List<String> keys;
 		config->get_section_keys("icons", &keys);
 		for (const String &key : keys) {
 			String icon_path = config->get_value("icons", key);
 			if (icon_path.is_relative_path()) {
 				icon_path = p_path.get_base_dir().path_join(icon_path);
 			}
 			p_extension->class_icon_paths[key] = icon_path;
 		}
 	}
 	p_extension = extension_manager->get_extension(p_path);
 	return OK;
 }
@ -1094,16 +857,7 @@ String GDExtensionResourceLoader::get_resource_type(const String &p_path) const
 #ifdef TOOLS_ENABLED
 bool GDExtension::has_library_changed() const {
-	// Check only that the last modified time is different (rather than checking
+	return loader->has_library_changed();
 	// that it's newer) since some OS's (namely Windows) will preserve the modified
 	// time by default when copying files.
 	if (FileAccess::get_modified_time(get_path()) != resource_last_modified_time) {
 		return true;
 	}
 	if (FileAccess::get_modified_time(library_path) != library_last_modified_time) {
 		return true;
 	}
 	return false;
 }
 void GDExtension::prepare_reload() {
--- a/engine/core/extension/gdextension.h
+++ b/engine/core/extension/gdextension.h
@ -31,13 +31,11 @@
 #ifndef GDEXTENSION_H
 #define GDEXTENSION_H
 #include <functional>
 #include "core/extension/gdextension_interface.h"
 #include "core/extension/gdextension_loader.h"
 #include "core/io/config_file.h"
 #include "core/io/resource_loader.h"
 #include "core/object/ref_counted.h"
 #include "core/os/shared_object.h"
 class GDExtensionMethodBind;
@ -46,8 +44,8 @@ class GDExtension : public Resource {
 	friend class GDExtensionManager;
-	void *library = nullptr; // pointer if valid,
+	Ref<GDExtensionLoader> loader;
-	String library_path;
+
 	bool reloadable = false;
 	struct Extension {
@ -72,15 +70,20 @@ class GDExtension : public Resource {
 #ifndef DISABLE_DEPRECATED
 		GDExtensionClassNotification notification_func = nullptr;
 		GDExtensionClassFreePropertyList free_property_list_func = nullptr;
 		GDExtensionClassCreateInstance create_instance_func = nullptr;
 		GDExtensionClassGetRID get_rid_func = nullptr;
 		GDExtensionClassGetVirtual get_virtual_func = nullptr;
 		GDExtensionClassGetVirtualCallData get_virtual_call_data_func = nullptr;
 #endif // DISABLE_DEPRECATED
 	};
 #ifndef DISABLE_DEPRECATED
 	static void _register_extension_class(GDExtensionClassLibraryPtr p_library, GDExtensionConstStringNamePtr p_class_name, GDExtensionConstStringNamePtr p_parent_class_name, const GDExtensionClassCreationInfo *p_extension_funcs);
 	static void _register_extension_class2(GDExtensionClassLibraryPtr p_library, GDExtensionConstStringNamePtr p_class_name, GDExtensionConstStringNamePtr p_parent_class_name, const GDExtensionClassCreationInfo2 *p_extension_funcs);
 #endif // DISABLE_DEPRECATED
 	static void _register_extension_class3(GDExtensionClassLibraryPtr p_library, GDExtensionConstStringNamePtr p_class_name, GDExtensionConstStringNamePtr p_parent_class_name, const GDExtensionClassCreationInfo3 *p_extension_funcs);
-	static void _register_extension_class_internal(GDExtensionClassLibraryPtr p_library, GDExtensionConstStringNamePtr p_class_name, GDExtensionConstStringNamePtr p_parent_class_name, const GDExtensionClassCreationInfo3 *p_extension_funcs, const ClassCreationDeprecatedInfo *p_deprecated_funcs = nullptr);
+#endif // DISABLE_DEPRECATED
 	static void _register_extension_class4(GDExtensionClassLibraryPtr p_library, GDExtensionConstStringNamePtr p_class_name, GDExtensionConstStringNamePtr p_parent_class_name, const GDExtensionClassCreationInfo4 *p_extension_funcs);
 	static void _register_extension_class_internal(GDExtensionClassLibraryPtr p_library, GDExtensionConstStringNamePtr p_class_name, GDExtensionConstStringNamePtr p_parent_class_name, const GDExtensionClassCreationInfo4 *p_extension_funcs, const ClassCreationDeprecatedInfo *p_deprecated_funcs = nullptr);
 	static void _register_extension_class_method(GDExtensionClassLibraryPtr p_library, GDExtensionConstStringNamePtr p_class_name, const GDExtensionClassMethodInfo *p_method_info);
 	static void _register_extension_class_virtual_method(GDExtensionClassLibraryPtr p_library, GDExtensionConstStringNamePtr p_class_name, const GDExtensionClassVirtualMethodInfo *p_method_info);
 	static void _register_extension_class_integer_constant(GDExtensionClassLibraryPtr p_library, GDExtensionConstStringNamePtr p_class_name, GDExtensionConstStringNamePtr p_enum_name, GDExtensionConstStringNamePtr p_constant_name, GDExtensionInt p_constant_value, GDExtensionBool p_is_bitfield);
@ -96,8 +99,6 @@ class GDExtension : public Resource {
 	int32_t level_initialized = -1;
 #ifdef TOOLS_ENABLED
 	uint64_t resource_last_modified_time = 0;
 	uint64_t library_last_modified_time = 0;
 	bool is_reloading = false;
 	Vector<GDExtensionMethodBind *> invalid_methods;
 	Vector<ObjectID> instance_bindings;
@ -124,11 +125,12 @@ public:
 	virtual bool editor_can_reload_from_file() override { return false; } // Reloading is handled in a special way.
 	static String get_extension_list_config_file();
 	static String find_extension_library(const String &p_path, Ref<ConfigFile> p_config, std::function<bool(String)> p_has_feature, PackedStringArray *r_tags = nullptr);
 	static Vector<SharedObject> find_extension_dependencies(const String &p_path, Ref<ConfigFile> p_config, std::function<bool(String)> p_has_feature);
-	Error open_library(const String &p_path, const String &p_entry_symbol, Vector<SharedObject> *p_dependencies = nullptr);
+	const Ref<GDExtensionLoader> get_loader() const { return loader; }
 	Error open_library(const String &p_path, const Ref<GDExtensionLoader> &p_loader);
 	void close_library();
 	bool is_library_open() const;
 	enum InitializationLevel {
 		INITIALIZATION_LEVEL_CORE = GDEXTENSION_INITIALIZATION_CORE,
@ -146,17 +148,11 @@ protected:
 #endif
 public:
 	bool is_library_open() const;
 #ifdef TOOLS_ENABLED
 	bool is_reloadable() const { return reloadable; }
 	void set_reloadable(bool p_reloadable) { reloadable = p_reloadable; }
 	bool has_library_changed() const;
 	void update_last_modified_time(uint64_t p_resource_last_modified_time, uint64_t p_library_last_modified_time) {
 		resource_last_modified_time = p_resource_last_modified_time;
 		library_last_modified_time = p_library_last_modified_time;
 	}
 	void track_instance_binding(Object *p_object);
 	void untrack_instance_binding(Object *p_object);
--- a/engine/core/extension/gdextension_interface.cpp
+++ b/engine/core/extension/gdextension_interface.cpp
@ -32,8 +32,9 @@
 #include "core/config/engine.h"
 #include "core/extension/gdextension.h"
-#include "core/extension/gdextension_compat_hashes.h"
+#include "core/extension/gdextension_special_compat_hashes.h"
 #include "core/io/file_access.h"
 #include "core/io/image.h"
 #include "core/io/xml_parser.h"
 #include "core/object/class_db.h"
 #include "core/object/script_language_extension.h"
@ -507,6 +508,14 @@ static GDExtensionBool gdextension_variant_has_key(GDExtensionConstVariantPtr p_
 	return ret;
 }
 static GDObjectInstanceID gdextension_variant_get_object_instance_id(GDExtensionConstVariantPtr p_self) {
 	const Variant *self = (const Variant *)p_self;
 	if (likely(self->get_type() == Variant::OBJECT)) {
 		return self->operator ObjectID();
 	}
 	return 0;
 }
 static void gdextension_variant_get_type_name(GDExtensionVariantType p_type, GDExtensionUninitializedVariantPtr r_ret) {
 	String name = Variant::get_type_name((Variant::Type)p_type);
 	memnew_placement(r_ret, String(name));
@ -691,6 +700,91 @@ static GDExtensionTypeFromVariantConstructorFunc gdextension_get_variant_to_type
 	ERR_FAIL_V_MSG(nullptr, "Getting Variant conversion function with invalid type");
 }
 static GDExtensionVariantGetInternalPtrFunc gdextension_variant_get_ptr_internal_getter(GDExtensionVariantType p_type) {
 	switch (p_type) {
 		case GDEXTENSION_VARIANT_TYPE_BOOL:
 			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<bool *(*)(Variant *)>(VariantInternal::get_bool));
 		case GDEXTENSION_VARIANT_TYPE_INT:
 			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<int64_t *(*)(Variant *)>(VariantInternal::get_int));
 		case GDEXTENSION_VARIANT_TYPE_FLOAT:
 			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<double *(*)(Variant *)>(VariantInternal::get_float));
 		case GDEXTENSION_VARIANT_TYPE_STRING:
 			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<String *(*)(Variant *)>(VariantInternal::get_string));
 		case GDEXTENSION_VARIANT_TYPE_VECTOR2:
 			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<Vector2 *(*)(Variant *)>(VariantInternal::get_vector2));
 		case GDEXTENSION_VARIANT_TYPE_VECTOR2I:
 			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<Vector2i *(*)(Variant *)>(VariantInternal::get_vector2i));
 		case GDEXTENSION_VARIANT_TYPE_RECT2:
 			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<Rect2 *(*)(Variant *)>(VariantInternal::get_rect2));
 		case GDEXTENSION_VARIANT_TYPE_RECT2I:
 			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<Rect2i *(*)(Variant *)>(VariantInternal::get_rect2i));
 		case GDEXTENSION_VARIANT_TYPE_VECTOR3:
 			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<Vector3 *(*)(Variant *)>(VariantInternal::get_vector3));
 		case GDEXTENSION_VARIANT_TYPE_VECTOR3I:
 			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<Vector3i *(*)(Variant *)>(VariantInternal::get_vector3i));
 		case GDEXTENSION_VARIANT_TYPE_TRANSFORM2D:
 			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<Transform2D *(*)(Variant *)>(VariantInternal::get_transform2d));
 		case GDEXTENSION_VARIANT_TYPE_VECTOR4:
 			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<Vector4 *(*)(Variant *)>(VariantInternal::get_vector4));
 		case GDEXTENSION_VARIANT_TYPE_VECTOR4I:
 			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<Vector4i *(*)(Variant *)>(VariantInternal::get_vector4i));
 		case GDEXTENSION_VARIANT_TYPE_PLANE:
 			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<Plane *(*)(Variant *)>(VariantInternal::get_plane));
 		case GDEXTENSION_VARIANT_TYPE_QUATERNION:
 			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<Quaternion *(*)(Variant *)>(VariantInternal::get_quaternion));
 		case GDEXTENSION_VARIANT_TYPE_AABB:
 			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<AABB *(*)(Variant *)>(VariantInternal::get_aabb));
 		case GDEXTENSION_VARIANT_TYPE_BASIS:
 			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<Basis *(*)(Variant *)>(VariantInternal::get_basis));
 		case GDEXTENSION_VARIANT_TYPE_TRANSFORM3D:
 			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<Transform3D *(*)(Variant *)>(VariantInternal::get_transform));
 		case GDEXTENSION_VARIANT_TYPE_PROJECTION:
 			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<Projection *(*)(Variant *)>(VariantInternal::get_projection));
 		case GDEXTENSION_VARIANT_TYPE_COLOR:
 			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<Color *(*)(Variant *)>(VariantInternal::get_color));
 		case GDEXTENSION_VARIANT_TYPE_STRING_NAME:
 			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<StringName *(*)(Variant *)>(VariantInternal::get_string_name));
 		case GDEXTENSION_VARIANT_TYPE_NODE_PATH:
 			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<NodePath *(*)(Variant *)>(VariantInternal::get_node_path));
 		case GDEXTENSION_VARIANT_TYPE_RID:
 			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<RID *(*)(Variant *)>(VariantInternal::get_rid));
 		case GDEXTENSION_VARIANT_TYPE_OBJECT:
 			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<Object **(*)(Variant *)>(VariantInternal::get_object));
 		case GDEXTENSION_VARIANT_TYPE_CALLABLE:
 			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<Callable *(*)(Variant *)>(VariantInternal::get_callable));
 		case GDEXTENSION_VARIANT_TYPE_SIGNAL:
 			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<Signal *(*)(Variant *)>(VariantInternal::get_signal));
 		case GDEXTENSION_VARIANT_TYPE_DICTIONARY:
 			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<Dictionary *(*)(Variant *)>(VariantInternal::get_dictionary));
 		case GDEXTENSION_VARIANT_TYPE_ARRAY:
 			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<Array *(*)(Variant *)>(VariantInternal::get_array));
 		case GDEXTENSION_VARIANT_TYPE_PACKED_BYTE_ARRAY:
 			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<PackedByteArray *(*)(Variant *)>(VariantInternal::get_byte_array));
 		case GDEXTENSION_VARIANT_TYPE_PACKED_INT32_ARRAY:
 			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<PackedInt32Array *(*)(Variant *)>(VariantInternal::get_int32_array));
 		case GDEXTENSION_VARIANT_TYPE_PACKED_INT64_ARRAY:
 			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<PackedInt64Array *(*)(Variant *)>(VariantInternal::get_int64_array));
 		case GDEXTENSION_VARIANT_TYPE_PACKED_FLOAT32_ARRAY:
 			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<PackedFloat32Array *(*)(Variant *)>(VariantInternal::get_float32_array));
 		case GDEXTENSION_VARIANT_TYPE_PACKED_FLOAT64_ARRAY:
 			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<PackedFloat64Array *(*)(Variant *)>(VariantInternal::get_float64_array));
 		case GDEXTENSION_VARIANT_TYPE_PACKED_STRING_ARRAY:
 			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<PackedStringArray *(*)(Variant *)>(VariantInternal::get_string_array));
 		case GDEXTENSION_VARIANT_TYPE_PACKED_VECTOR2_ARRAY:
 			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<PackedVector2Array *(*)(Variant *)>(VariantInternal::get_vector2_array));
 		case GDEXTENSION_VARIANT_TYPE_PACKED_VECTOR3_ARRAY:
 			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<PackedVector3Array *(*)(Variant *)>(VariantInternal::get_vector3_array));
 		case GDEXTENSION_VARIANT_TYPE_PACKED_COLOR_ARRAY:
 			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<PackedColorArray *(*)(Variant *)>(VariantInternal::get_color_array));
 		case GDEXTENSION_VARIANT_TYPE_PACKED_VECTOR4_ARRAY:
 			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<PackedVector4Array *(*)(Variant *)>(VariantInternal::get_vector4_array));
 		case GDEXTENSION_VARIANT_TYPE_NIL:
 		case GDEXTENSION_VARIANT_TYPE_VARIANT_MAX:
 			ERR_FAIL_V_MSG(nullptr, "Getting Variant get internal pointer function with invalid type.");
 	}
 	ERR_FAIL_V_MSG(nullptr, "Getting Variant get internal pointer function with invalid type.");
 }
 // ptrcalls
 static GDExtensionPtrOperatorEvaluator gdextension_variant_get_ptr_operator_evaluator(GDExtensionVariantOperator p_operator, GDExtensionVariantType p_type_a, GDExtensionVariantType p_type_b) {
 	return (GDExtensionPtrOperatorEvaluator)Variant::get_ptr_operator_evaluator(Variant::Operator(p_operator), Variant::Type(p_type_a), Variant::Type(p_type_b));
@ -1199,6 +1293,15 @@ static GDExtensionVariantPtr gdextension_dictionary_operator_index_const(GDExten
 	return (GDExtensionVariantPtr)&self->operator[](*(const Variant *)p_key);
 }
 void gdextension_dictionary_set_typed(GDExtensionTypePtr p_self, GDExtensionVariantType p_key_type, GDExtensionConstStringNamePtr p_key_class_name, GDExtensionConstVariantPtr p_key_script, GDExtensionVariantType p_value_type, GDExtensionConstStringNamePtr p_value_class_name, GDExtensionConstVariantPtr p_value_script) {
 	Dictionary *self = reinterpret_cast<Dictionary *>(p_self);
 	const StringName *key_class_name = reinterpret_cast<const StringName *>(p_key_class_name);
 	const Variant *key_script = reinterpret_cast<const Variant *>(p_key_script);
 	const StringName *value_class_name = reinterpret_cast<const StringName *>(p_value_class_name);
 	const Variant *value_script = reinterpret_cast<const Variant *>(p_value_script);
 	self->set_typed((uint32_t)p_key_type, *key_class_name, *key_script, (uint32_t)p_value_type, *value_class_name, *value_script);
 }
 /* OBJECT API */
 static void gdextension_object_method_bind_call(GDExtensionMethodBindPtr p_method_bind, GDExtensionObjectPtr p_instance, const GDExtensionConstVariantPtr *p_args, GDExtensionInt p_arg_count, GDExtensionUninitializedVariantPtr r_return, GDExtensionCallError *r_error) {
@ -1299,7 +1402,7 @@ static void gdextension_object_call_script_method(GDExtensionObjectPtr p_object,
 	const StringName method = *reinterpret_cast<const StringName *>(p_method);
 	const Variant **args = (const Variant **)p_args;
-	Callable::CallError error;
+	Callable::CallError error; // TODO: Check `error`?
 	memnew_placement(r_return, Variant);
 	*(Variant *)r_return = o->callp(method, args, p_argument_count, error);
@ -1501,24 +1604,31 @@ static GDExtensionMethodBindPtr gdextension_classdb_get_method_bind(GDExtensionC
 	// If lookup failed, see if this is one of the broken hashes from issue #81386.
 	if (!mb && exists) {
 		uint32_t mapped_hash;
-		if (GDExtensionCompatHashes::lookup_current_hash(classname, methodname, p_hash, &mapped_hash)) {
+		if (GDExtensionSpecialCompatHashes::lookup_current_hash(classname, methodname, p_hash, &mapped_hash)) {
 			mb = ClassDB::get_method_with_compatibility(classname, methodname, mapped_hash, &exists);
 		}
 	}
 #endif
 	if (!mb && exists) {
-		ERR_PRINT("Method '" + classname + "." + methodname + "' has changed and no compatibility fallback has been provided. Please open an issue.");
+		ERR_PRINT(vformat("Method '%s.%s' has changed and no compatibility fallback has been provided. Please open an issue.", classname, methodname));
 		return nullptr;
 	}
 	ERR_FAIL_NULL_V(mb, nullptr);
 	return (GDExtensionMethodBindPtr)mb;
 }
 #ifndef DISABLE_DEPRECATED
 static GDExtensionObjectPtr gdextension_classdb_construct_object(GDExtensionConstStringNamePtr p_classname) {
 	const StringName classname = *reinterpret_cast<const StringName *>(p_classname);
 	return (GDExtensionObjectPtr)ClassDB::instantiate_no_placeholders(classname);
 }
 #endif
 static GDExtensionObjectPtr gdextension_classdb_construct_object2(GDExtensionConstStringNamePtr p_classname) {
 	const StringName classname = *reinterpret_cast<const StringName *>(p_classname);
 	return (GDExtensionObjectPtr)ClassDB::instantiate_without_postinitialization(classname);
 }
 static void *gdextension_classdb_get_class_tag(GDExtensionConstStringNamePtr p_classname) {
 	const StringName classname = *reinterpret_cast<const StringName *>(p_classname);
@ -1594,11 +1704,13 @@ void gdextension_setup_interface() {
 	REGISTER_INTERFACE_FUNC(variant_has_method);
 	REGISTER_INTERFACE_FUNC(variant_has_member);
 	REGISTER_INTERFACE_FUNC(variant_has_key);
 	REGISTER_INTERFACE_FUNC(variant_get_object_instance_id);
 	REGISTER_INTERFACE_FUNC(variant_get_type_name);
 	REGISTER_INTERFACE_FUNC(variant_can_convert);
 	REGISTER_INTERFACE_FUNC(variant_can_convert_strict);
 	REGISTER_INTERFACE_FUNC(get_variant_from_type_constructor);
 	REGISTER_INTERFACE_FUNC(get_variant_to_type_constructor);
 	REGISTER_INTERFACE_FUNC(variant_get_ptr_internal_getter);
 	REGISTER_INTERFACE_FUNC(variant_get_ptr_operator_evaluator);
 	REGISTER_INTERFACE_FUNC(variant_get_ptr_builtin_method);
 	REGISTER_INTERFACE_FUNC(variant_get_ptr_constructor);
@ -1672,6 +1784,7 @@ void gdextension_setup_interface() {
 	REGISTER_INTERFACE_FUNC(array_set_typed);
 	REGISTER_INTERFACE_FUNC(dictionary_operator_index);
 	REGISTER_INTERFACE_FUNC(dictionary_operator_index_const);
 	REGISTER_INTERFACE_FUNC(dictionary_set_typed);
 	REGISTER_INTERFACE_FUNC(object_method_bind_call);
 	REGISTER_INTERFACE_FUNC(object_method_bind_ptrcall);
 	REGISTER_INTERFACE_FUNC(object_destroy);
@ -1701,7 +1814,10 @@ void gdextension_setup_interface() {
 #endif // DISABLE_DEPRECATED
 	REGISTER_INTERFACE_FUNC(callable_custom_create2);
 	REGISTER_INTERFACE_FUNC(callable_custom_get_userdata);
 #ifndef DISABLE_DEPRECATED
 	REGISTER_INTERFACE_FUNC(classdb_construct_object);
 #endif // DISABLE_DEPRECATED
 	REGISTER_INTERFACE_FUNC(classdb_construct_object2);
 	REGISTER_INTERFACE_FUNC(classdb_get_method_bind);
 	REGISTER_INTERFACE_FUNC(classdb_get_class_tag);
 	REGISTER_INTERFACE_FUNC(editor_add_plugin);
--- a/engine/core/extension/gdextension_interface.h
+++ b/engine/core/extension/gdextension_interface.h
@ -198,6 +198,7 @@ typedef struct {
 typedef void (*GDExtensionVariantFromTypeConstructorFunc)(GDExtensionUninitializedVariantPtr, GDExtensionTypePtr);
 typedef void (*GDExtensionTypeFromVariantConstructorFunc)(GDExtensionUninitializedTypePtr, GDExtensionVariantPtr);
 typedef void *(*GDExtensionVariantGetInternalPtrFunc)(GDExtensionVariantPtr);
 typedef void (*GDExtensionPtrOperatorEvaluator)(GDExtensionConstTypePtr p_left, GDExtensionConstTypePtr p_right, GDExtensionTypePtr r_result);
 typedef void (*GDExtensionPtrBuiltInMethod)(GDExtensionTypePtr p_base, const GDExtensionConstTypePtr *p_args, GDExtensionTypePtr r_return, int p_argument_count);
 typedef void (*GDExtensionPtrConstructor)(GDExtensionUninitializedTypePtr p_base, const GDExtensionConstTypePtr *p_args);
@ -268,10 +269,13 @@ typedef void (*GDExtensionClassReference)(GDExtensionClassInstancePtr p_instance
 typedef void (*GDExtensionClassUnreference)(GDExtensionClassInstancePtr p_instance);
 typedef void (*GDExtensionClassCallVirtual)(GDExtensionClassInstancePtr p_instance, const GDExtensionConstTypePtr *p_args, GDExtensionTypePtr r_ret);
 typedef GDExtensionObjectPtr (*GDExtensionClassCreateInstance)(void *p_class_userdata);
 typedef GDExtensionObjectPtr (*GDExtensionClassCreateInstance2)(void *p_class_userdata, GDExtensionBool p_notify_postinitialize);
 typedef void (*GDExtensionClassFreeInstance)(void *p_class_userdata, GDExtensionClassInstancePtr p_instance);
 typedef GDExtensionClassInstancePtr (*GDExtensionClassRecreateInstance)(void *p_class_userdata, GDExtensionObjectPtr p_object);
 typedef GDExtensionClassCallVirtual (*GDExtensionClassGetVirtual)(void *p_class_userdata, GDExtensionConstStringNamePtr p_name);
 typedef GDExtensionClassCallVirtual (*GDExtensionClassGetVirtual2)(void *p_class_userdata, GDExtensionConstStringNamePtr p_name, uint32_t p_hash);
 typedef void *(*GDExtensionClassGetVirtualCallData)(void *p_class_userdata, GDExtensionConstStringNamePtr p_name);
 typedef void *(*GDExtensionClassGetVirtualCallData2)(void *p_class_userdata, GDExtensionConstStringNamePtr p_name, uint32_t p_hash);
 typedef void (*GDExtensionClassCallVirtualWithData)(GDExtensionClassInstancePtr p_instance, GDExtensionConstStringNamePtr p_name, void *p_virtual_call_userdata, const GDExtensionConstTypePtr *p_args, GDExtensionTypePtr r_ret);
 typedef struct {
@ -292,7 +296,7 @@ typedef struct {
 	GDExtensionClassGetVirtual get_virtual_func; // Queries a virtual function by name and returns a callback to invoke the requested virtual function.
 	GDExtensionClassGetRID get_rid_func;
 	void *class_userdata; // Per-class user data, later accessible in instance bindings.
-} GDExtensionClassCreationInfo; // Deprecated. Use GDExtensionClassCreationInfo3 instead.
+} GDExtensionClassCreationInfo; // Deprecated. Use GDExtensionClassCreationInfo4 instead.
 typedef struct {
 	GDExtensionBool is_virtual;
@ -325,7 +329,7 @@ typedef struct {
 	GDExtensionClassCallVirtualWithData call_virtual_with_data_func;
 	GDExtensionClassGetRID get_rid_func;
 	void *class_userdata; // Per-class user data, later accessible in instance bindings.
-} GDExtensionClassCreationInfo2; // Deprecated. Use GDExtensionClassCreationInfo3 instead.
+} GDExtensionClassCreationInfo2; // Deprecated. Use GDExtensionClassCreationInfo4 instead.
 typedef struct {
 	GDExtensionBool is_virtual;
@ -359,7 +363,41 @@ typedef struct {
 	GDExtensionClassCallVirtualWithData call_virtual_with_data_func;
 	GDExtensionClassGetRID get_rid_func;
 	void *class_userdata; // Per-class user data, later accessible in instance bindings.
-} GDExtensionClassCreationInfo3;
+} GDExtensionClassCreationInfo3; // Deprecated. Use GDExtensionClassCreationInfo4 instead.
 typedef struct {
 	GDExtensionBool is_virtual;
 	GDExtensionBool is_abstract;
 	GDExtensionBool is_exposed;
 	GDExtensionBool is_runtime;
 	GDExtensionConstStringPtr icon_path;
 	GDExtensionClassSet set_func;
 	GDExtensionClassGet get_func;
 	GDExtensionClassGetPropertyList get_property_list_func;
 	GDExtensionClassFreePropertyList2 free_property_list_func;
 	GDExtensionClassPropertyCanRevert property_can_revert_func;
 	GDExtensionClassPropertyGetRevert property_get_revert_func;
 	GDExtensionClassValidateProperty validate_property_func;
 	GDExtensionClassNotification2 notification_func;
 	GDExtensionClassToString to_string_func;
 	GDExtensionClassReference reference_func;
 	GDExtensionClassUnreference unreference_func;
 	GDExtensionClassCreateInstance2 create_instance_func; // (Default) constructor; mandatory. If the class is not instantiable, consider making it virtual or abstract.
 	GDExtensionClassFreeInstance free_instance_func; // Destructor; mandatory.
 	GDExtensionClassRecreateInstance recreate_instance_func;
 	// Queries a virtual function by name and returns a callback to invoke the requested virtual function.
 	GDExtensionClassGetVirtual2 get_virtual_func;
 	// Paired with `call_virtual_with_data_func`, this is an alternative to `get_virtual_func` for extensions that
 	// need or benefit from extra data when calling virtual functions.
 	// Returns user data that will be passed to `call_virtual_with_data_func`.
 	// Returning `NULL` from this function signals to Godot that the virtual function is not overridden.
 	// Data returned from this function should be managed by the extension and must be valid until the extension is deinitialized.
 	// You should supply either `get_virtual_func`, or `get_virtual_call_data_func` with `call_virtual_with_data_func`.
 	GDExtensionClassGetVirtualCallData2 get_virtual_call_data_func;
 	// Used to call virtual functions when `get_virtual_call_data_func` is not null.
 	GDExtensionClassCallVirtualWithData call_virtual_with_data_func;
 	void *class_userdata; // Per-class user data, later accessible in instance bindings.
 } GDExtensionClassCreationInfo4;
 typedef void *GDExtensionClassLibraryPtr;
@ -386,7 +424,9 @@ typedef enum {
 	GDEXTENSION_METHOD_ARGUMENT_METADATA_INT_IS_UINT32,
 	GDEXTENSION_METHOD_ARGUMENT_METADATA_INT_IS_UINT64,
 	GDEXTENSION_METHOD_ARGUMENT_METADATA_REAL_IS_FLOAT,
-	GDEXTENSION_METHOD_ARGUMENT_METADATA_REAL_IS_DOUBLE
+	GDEXTENSION_METHOD_ARGUMENT_METADATA_REAL_IS_DOUBLE,
 	GDEXTENSION_METHOD_ARGUMENT_METADATA_INT_IS_CHAR16,
 	GDEXTENSION_METHOD_ARGUMENT_METADATA_INT_IS_CHAR32,
 } GDExtensionClassMethodArgumentMetadata;
 typedef void (*GDExtensionClassMethodCall)(void *method_userdata, GDExtensionClassInstancePtr p_instance, const GDExtensionConstVariantPtr *p_args, GDExtensionInt p_argument_count, GDExtensionVariantPtr r_return, GDExtensionCallError *r_error);
@ -805,7 +845,7 @@ typedef void (*GDExtensionInterfaceMemFree)(void *p_ptr);
 *
 * Logs an error to Godot's built-in debugger and to the OS terminal.
 *
- * @param p_description The code trigging the error.
+ * @param p_description The code triggering the error.
 * @param p_function The function name where the error occurred.
 * @param p_file The file where the error occurred.
 * @param p_line The line where the error occurred.
@ -819,7 +859,7 @@ typedef void (*GDExtensionInterfacePrintError)(const char *p_description, const
 *
 * Logs an error with a message to Godot's built-in debugger and to the OS terminal.
 *
- * @param p_description The code trigging the error.
+ * @param p_description The code triggering the error.
 * @param p_message The message to show along with the error.
 * @param p_function The function name where the error occurred.
 * @param p_file The file where the error occurred.
@ -834,7 +874,7 @@ typedef void (*GDExtensionInterfacePrintErrorWithMessage)(const char *p_descript
 *
 * Logs a warning to Godot's built-in debugger and to the OS terminal.
 *
- * @param p_description The code trigging the warning.
+ * @param p_description The code triggering the warning.
 * @param p_function The function name where the warning occurred.
 * @param p_file The file where the warning occurred.
 * @param p_line The line where the warning occurred.
@ -848,7 +888,7 @@ typedef void (*GDExtensionInterfacePrintWarning)(const char *p_description, cons
 *
 * Logs a warning with a message to Godot's built-in debugger and to the OS terminal.
 *
- * @param p_description The code trigging the warning.
+ * @param p_description The code triggering the warning.
 * @param p_message The message to show along with the warning.
 * @param p_function The function name where the warning occurred.
 * @param p_file The file where the warning occurred.
@ -863,7 +903,7 @@ typedef void (*GDExtensionInterfacePrintWarningWithMessage)(const char *p_descri
 *
 * Logs a script error to Godot's built-in debugger and to the OS terminal.
 *
- * @param p_description The code trigging the error.
+ * @param p_description The code triggering the error.
 * @param p_function The function name where the error occurred.
 * @param p_file The file where the error occurred.
 * @param p_line The line where the error occurred.
@ -877,7 +917,7 @@ typedef void (*GDExtensionInterfacePrintScriptError)(const char *p_description,
 *
 * Logs a script error with a message to Godot's built-in debugger and to the OS terminal.
 *
- * @param p_description The code trigging the error.
+ * @param p_description The code triggering the error.
 * @param p_message The message to show along with the error.
 * @param p_function The function name where the error occurred.
 * @param p_file The file where the error occurred.
@ -1271,6 +1311,21 @@ typedef GDExtensionBool (*GDExtensionInterfaceVariantHasMember)(GDExtensionVaria
 */
 typedef GDExtensionBool (*GDExtensionInterfaceVariantHasKey)(GDExtensionConstVariantPtr p_self, GDExtensionConstVariantPtr p_key, GDExtensionBool *r_valid);
 /**
 * @name variant_get_object_instance_id
 * @since 4.4
 *
 * Gets the object instance ID from a variant of type GDEXTENSION_VARIANT_TYPE_OBJECT.
 *
 * If the variant isn't of type GDEXTENSION_VARIANT_TYPE_OBJECT, then zero will be returned.
 * The instance ID will be returned even if the object is no longer valid - use `object_get_instance_by_id()` to check if the object is still valid.
 *
 * @param p_self A pointer to the Variant.
 *
 * @return The instance ID for the contained object.
 */
 typedef GDObjectInstanceID (*GDExtensionInterfaceVariantGetObjectInstanceId)(GDExtensionConstVariantPtr p_self);
 /**
 * @name variant_get_type_name
 * @since 4.1
@ -1332,6 +1387,23 @@ typedef GDExtensionVariantFromTypeConstructorFunc (*GDExtensionInterfaceGetVaria
 */
 typedef GDExtensionTypeFromVariantConstructorFunc (*GDExtensionInterfaceGetVariantToTypeConstructor)(GDExtensionVariantType p_type);
 /**
 * @name variant_get_ptr_internal_getter
 * @since 4.4
 *
 * Provides a function pointer for retrieving a pointer to a variant's internal value.
 * Access to a variant's internal value can be used to modify it in-place, or to retrieve its value without the overhead of variant conversion functions.
 * It is recommended to cache the getter for all variant types in a function table to avoid retrieval overhead upon use.
 *
 * @note Each function assumes the variant's type has already been determined and matches the function.
 * Invoking the function with a variant of a mismatched type has undefined behavior, and may lead to a segmentation fault.
 *
 * @param p_type The Variant type.
 *
 * @return A pointer to a type-specific function that returns a pointer to the internal value of a variant. Check the implementation of this function (gdextension_variant_get_ptr_internal_getter) for pointee type info of each variant type.
 */
 typedef GDExtensionVariantGetInternalPtrFunc (*GDExtensionInterfaceGetVariantGetInternalPtrFunc)(GDExtensionVariantType p_type);
 /**
 * @name variant_get_ptr_operator_evaluator
 * @since 4.1
@ -2337,6 +2409,22 @@ typedef GDExtensionVariantPtr (*GDExtensionInterfaceDictionaryOperatorIndex)(GDE
 */
 typedef GDExtensionVariantPtr (*GDExtensionInterfaceDictionaryOperatorIndexConst)(GDExtensionConstTypePtr p_self, GDExtensionConstVariantPtr p_key);
 /**
 * @name dictionary_set_typed
 * @since 4.4
 *
 * Makes a Dictionary into a typed Dictionary.
 *
 * @param p_self A pointer to the Dictionary.
 * @param p_key_type The type of Variant the Dictionary key will store.
 * @param p_key_class_name A pointer to a StringName with the name of the object (if p_key_type is GDEXTENSION_VARIANT_TYPE_OBJECT).
 * @param p_key_script A pointer to a Script object (if p_key_type is GDEXTENSION_VARIANT_TYPE_OBJECT and the base class is extended by a script).
 * @param p_value_type The type of Variant the Dictionary value will store.
 * @param p_value_class_name A pointer to a StringName with the name of the object (if p_value_type is GDEXTENSION_VARIANT_TYPE_OBJECT).
 * @param p_value_script A pointer to a Script object (if p_value_type is GDEXTENSION_VARIANT_TYPE_OBJECT and the base class is extended by a script).
 */
 typedef void (*GDExtensionInterfaceDictionarySetTyped)(GDExtensionTypePtr p_self, GDExtensionVariantType p_key_type, GDExtensionConstStringNamePtr p_key_class_name, GDExtensionConstVariantPtr p_key_script, GDExtensionVariantType p_value_type, GDExtensionConstStringNamePtr p_value_class_name, GDExtensionConstVariantPtr p_value_script);
 /* INTERFACE: Object */
 /**
@ -2680,6 +2768,7 @@ typedef void *(*GDExtensionInterfaceCallableCustomGetUserData)(GDExtensionConstT
 /**
 * @name classdb_construct_object
 * @since 4.1
 * @deprecated in Godot 4.4. Use `classdb_construct_object2` instead.
 *
 * Constructs an Object of the requested class.
 *
@ -2691,6 +2780,22 @@ typedef void *(*GDExtensionInterfaceCallableCustomGetUserData)(GDExtensionConstT
 */
 typedef GDExtensionObjectPtr (*GDExtensionInterfaceClassdbConstructObject)(GDExtensionConstStringNamePtr p_classname);
 /**
 * @name classdb_construct_object2
 * @since 4.4
 *
 * Constructs an Object of the requested class.
 *
 * The passed class must be a built-in godot class, or an already-registered extension class. In both cases, object_set_instance() should be called to fully initialize the object.
 *
 * "NOTIFICATION_POSTINITIALIZE" must be sent after construction.
 *
 * @param p_classname A pointer to a StringName with the class name.
 *
 * @return A pointer to the newly created Object.
 */
 typedef GDExtensionObjectPtr (*GDExtensionInterfaceClassdbConstructObject2)(GDExtensionConstStringNamePtr p_classname);
 /**
 * @name classdb_get_method_bind
 * @since 4.1
@ -2722,7 +2827,7 @@ typedef void *(*GDExtensionInterfaceClassdbGetClassTag)(GDExtensionConstStringNa
 /**
 * @name classdb_register_extension_class
 * @since 4.1
- * @deprecated in Godot 4.2. Use `classdb_register_extension_class3` instead.
+ * @deprecated in Godot 4.2. Use `classdb_register_extension_class4` instead.
 *
 * Registers an extension class in the ClassDB.
 *
@ -2738,7 +2843,7 @@ typedef void (*GDExtensionInterfaceClassdbRegisterExtensionClass)(GDExtensionCla
 /**
 * @name classdb_register_extension_class2
 * @since 4.2
- * @deprecated in Godot 4.3. Use `classdb_register_extension_class3` instead.
+ * @deprecated in Godot 4.3. Use `classdb_register_extension_class4` instead.
 *
 * Registers an extension class in the ClassDB.
 *
@ -2754,6 +2859,7 @@ typedef void (*GDExtensionInterfaceClassdbRegisterExtensionClass2)(GDExtensionCl
 /**
 * @name classdb_register_extension_class3
 * @since 4.3
 * @deprecated in Godot 4.4. Use `classdb_register_extension_class4` instead.
 *
 * Registers an extension class in the ClassDB.
 *
@ -2766,6 +2872,21 @@ typedef void (*GDExtensionInterfaceClassdbRegisterExtensionClass2)(GDExtensionCl
 */
 typedef void (*GDExtensionInterfaceClassdbRegisterExtensionClass3)(GDExtensionClassLibraryPtr p_library, GDExtensionConstStringNamePtr p_class_name, GDExtensionConstStringNamePtr p_parent_class_name, const GDExtensionClassCreationInfo3 *p_extension_funcs);
 /**
 * @name classdb_register_extension_class4
 * @since 4.4
 *
 * Registers an extension class in the ClassDB.
 *
 * Provided struct can be safely freed once the function returns.
 *
 * @param p_library A pointer the library received by the GDExtension's entry point function.
 * @param p_class_name A pointer to a StringName with the class name.
 * @param p_parent_class_name A pointer to a StringName with the parent class name.
 * @param p_extension_funcs A pointer to a GDExtensionClassCreationInfo2 struct.
 */
 typedef void (*GDExtensionInterfaceClassdbRegisterExtensionClass4)(GDExtensionClassLibraryPtr p_library, GDExtensionConstStringNamePtr p_class_name, GDExtensionConstStringNamePtr p_parent_class_name, const GDExtensionClassCreationInfo4 *p_extension_funcs);
 /**
 * @name classdb_register_extension_class_method
 * @since 4.1
--- a/engine/core/extension/gdextension_library_loader.cpp
+++ b/engine/core/extension/gdextension_library_loader.cpp
@ -0,0 +1,394 @@
 /**************************************************************************/
 /*  gdextension_library_loader.cpp                                        */
 /**************************************************************************/
 /*                         This file is part of:                          */
 /*                             GODOT ENGINE                               */
 /*                        https://godotengine.org                         */
 /**************************************************************************/
 /* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
 /* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
 /*                                                                        */
 /* Permission is hereby granted, free of charge, to any person obtaining  */
 /* a copy of this software and associated documentation files (the        */
 /* "Software"), to deal in the Software without restriction, including    */
 /* without limitation the rights to use, copy, modify, merge, publish,    */
 /* distribute, sublicense, and/or sell copies of the Software, and to     */
 /* permit persons to whom the Software is furnished to do so, subject to  */
 /* the following conditions:                                              */
 /*                                                                        */
 /* The above copyright notice and this permission notice shall be         */
 /* included in all copies or substantial portions of the Software.        */
 /*                                                                        */
 /* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
 /* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
 /* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
 /* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
 /* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
 /* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
 /**************************************************************************/
 #include "gdextension_library_loader.h"
 #include "core/config/project_settings.h"
 #include "core/io/dir_access.h"
 #include "core/version.h"
 #include "gdextension.h"
 Vector<SharedObject> GDExtensionLibraryLoader::find_extension_dependencies(const String &p_path, Ref<ConfigFile> p_config, std::function<bool(String)> p_has_feature) {
 	Vector<SharedObject> dependencies_shared_objects;
 	if (p_config->has_section("dependencies")) {
 		List<String> config_dependencies;
 		p_config->get_section_keys("dependencies", &config_dependencies);
 		for (const String &dependency : config_dependencies) {
 			Vector<String> dependency_tags = dependency.split(".");
 			bool all_tags_met = true;
 			for (int i = 0; i < dependency_tags.size(); i++) {
 				String tag = dependency_tags[i].strip_edges();
 				if (!p_has_feature(tag)) {
 					all_tags_met = false;
 					break;
 				}
 			}
 			if (all_tags_met) {
 				Dictionary dependency_value = p_config->get_value("dependencies", dependency);
 				for (const Variant *key = dependency_value.next(nullptr); key; key = dependency_value.next(key)) {
 					String dependency_path = *key;
 					String target_path = dependency_value[*key];
 					if (dependency_path.is_relative_path()) {
 						dependency_path = p_path.get_base_dir().path_join(dependency_path);
 					}
 					dependencies_shared_objects.push_back(SharedObject(dependency_path, dependency_tags, target_path));
 				}
 				break;
 			}
 		}
 	}
 	return dependencies_shared_objects;
 }
 String GDExtensionLibraryLoader::find_extension_library(const String &p_path, Ref<ConfigFile> p_config, std::function<bool(String)> p_has_feature, PackedStringArray *r_tags) {
 	// First, check the explicit libraries.
 	if (p_config->has_section("libraries")) {
 		List<String> libraries;
 		p_config->get_section_keys("libraries", &libraries);
 		// Iterate the libraries, finding the best matching tags.
 		String best_library_path;
 		Vector<String> best_library_tags;
 		for (const String &E : libraries) {
 			Vector<String> tags = E.split(".");
 			bool all_tags_met = true;
 			for (int i = 0; i < tags.size(); i++) {
 				String tag = tags[i].strip_edges();
 				if (!p_has_feature(tag)) {
 					all_tags_met = false;
 					break;
 				}
 			}
 			if (all_tags_met && tags.size() > best_library_tags.size()) {
 				best_library_path = p_config->get_value("libraries", E);
 				best_library_tags = tags;
 			}
 		}
 		if (!best_library_path.is_empty()) {
 			if (best_library_path.is_relative_path()) {
 				best_library_path = p_path.get_base_dir().path_join(best_library_path);
 			}
 			if (r_tags != nullptr) {
 				r_tags->append_array(best_library_tags);
 			}
 			return best_library_path;
 		}
 	}
 	// Second, try to autodetect.
 	String autodetect_library_prefix;
 	if (p_config->has_section_key("configuration", "autodetect_library_prefix")) {
 		autodetect_library_prefix = p_config->get_value("configuration", "autodetect_library_prefix");
 	}
 	if (!autodetect_library_prefix.is_empty()) {
 		String autodetect_path = autodetect_library_prefix;
 		if (autodetect_path.is_relative_path()) {
 			autodetect_path = p_path.get_base_dir().path_join(autodetect_path);
 		}
 		// Find the folder and file parts of the prefix.
 		String folder;
 		String file_prefix;
 		if (DirAccess::dir_exists_absolute(autodetect_path)) {
 			folder = autodetect_path;
 		} else if (DirAccess::dir_exists_absolute(autodetect_path.get_base_dir())) {
 			folder = autodetect_path.get_base_dir();
 			file_prefix = autodetect_path.get_file();
 		} else {
 			ERR_FAIL_V_MSG(String(), vformat("Error in extension: %s. Could not find folder for automatic detection of libraries files. autodetect_library_prefix=\"%s\"", p_path, autodetect_library_prefix));
 		}
 		// Open the folder.
 		Ref<DirAccess> dir = DirAccess::open(folder);
 		ERR_FAIL_COND_V_MSG(dir.is_null(), String(), vformat("Error in extension: %s. Could not open folder for automatic detection of libraries files. autodetect_library_prefix=\"%s\"", p_path, autodetect_library_prefix));
 		// Iterate the files and check the prefixes, finding the best matching file.
 		String best_file;
 		Vector<String> best_file_tags;
 		dir->list_dir_begin();
 		String file_name = dir->_get_next();
 		while (file_name != "") {
 			if (!dir->current_is_dir() && file_name.begins_with(file_prefix)) {
 				// Check if the files matches all requested feature tags.
 				String tags_str = file_name.trim_prefix(file_prefix);
 				tags_str = tags_str.trim_suffix(tags_str.get_extension());
 				Vector<String> tags = tags_str.split(".", false);
 				bool all_tags_met = true;
 				for (int i = 0; i < tags.size(); i++) {
 					String tag = tags[i].strip_edges();
 					if (!p_has_feature(tag)) {
 						all_tags_met = false;
 						break;
 					}
 				}
 				// If all tags are found in the feature list, and we found more tags than before, use this file.
 				if (all_tags_met && tags.size() > best_file_tags.size()) {
 					best_file_tags = tags;
 					best_file = file_name;
 				}
 			}
 			file_name = dir->_get_next();
 		}
 		if (!best_file.is_empty()) {
 			String library_path = folder.path_join(best_file);
 			if (r_tags != nullptr) {
 				r_tags->append_array(best_file_tags);
 			}
 			return library_path;
 		}
 	}
 	return String();
 }
 Error GDExtensionLibraryLoader::open_library(const String &p_path) {
 	Error err = parse_gdextension_file(p_path);
 	if (err != OK) {
 		return err;
 	}
 	String abs_path = ProjectSettings::get_singleton()->globalize_path(library_path);
 	Vector<String> abs_dependencies_paths;
 	if (!library_dependencies.is_empty()) {
 		for (const SharedObject &dependency : library_dependencies) {
 			abs_dependencies_paths.push_back(ProjectSettings::get_singleton()->globalize_path(dependency.path));
 		}
 	}
 	OS::GDExtensionData data = {
 		true, // also_set_library_path
 		&library_path, // r_resolved_path
 		Engine::get_singleton()->is_editor_hint(), // generate_temp_files
 		&abs_dependencies_paths, // library_dependencies
 	};
 	err = OS::get_singleton()->open_dynamic_library(is_static_library ? String() : abs_path, library, &data);
 	if (err != OK) {
 		return err;
 	}
 	return OK;
 }
 Error GDExtensionLibraryLoader::initialize(GDExtensionInterfaceGetProcAddress p_get_proc_address, const Ref<GDExtension> &p_extension, GDExtensionInitialization *r_initialization) {
 #ifdef TOOLS_ENABLED
 	p_extension->set_reloadable(is_reloadable && Engine::get_singleton()->is_extension_reloading_enabled());
 #endif
 	for (const KeyValue<String, String> &icon : class_icon_paths) {
 		p_extension->class_icon_paths[icon.key] = icon.value;
 	}
 	void *entry_funcptr = nullptr;
 	Error err = OS::get_singleton()->get_dynamic_library_symbol_handle(library, entry_symbol, entry_funcptr, false);
 	if (err != OK) {
 		ERR_PRINT(vformat("GDExtension entry point '%s' not found in library %s.", entry_symbol, library_path));
 		return err;
 	}
 	GDExtensionInitializationFunction initialization_function = (GDExtensionInitializationFunction)entry_funcptr;
 	GDExtensionBool ret = initialization_function(p_get_proc_address, p_extension.ptr(), r_initialization);
 	if (ret) {
 		return OK;
 	} else {
 		ERR_PRINT(vformat("GDExtension initialization function '%s' returned an error.", entry_symbol));
 		return FAILED;
 	}
 }
 void GDExtensionLibraryLoader::close_library() {
 	OS::get_singleton()->close_dynamic_library(library);
 	library = nullptr;
 }
 bool GDExtensionLibraryLoader::is_library_open() const {
 	return library != nullptr;
 }
 bool GDExtensionLibraryLoader::has_library_changed() const {
 #ifdef TOOLS_ENABLED
 	// Check only that the last modified time is different (rather than checking
 	// that it's newer) since some OS's (namely Windows) will preserve the modified
 	// time by default when copying files.
 	if (FileAccess::get_modified_time(resource_path) != resource_last_modified_time) {
 		return true;
 	}
 	if (FileAccess::get_modified_time(library_path) != library_last_modified_time) {
 		return true;
 	}
 #endif
 	return false;
 }
 bool GDExtensionLibraryLoader::library_exists() const {
 	return FileAccess::exists(resource_path);
 }
 Error GDExtensionLibraryLoader::parse_gdextension_file(const String &p_path) {
 	resource_path = p_path;
 	Ref<ConfigFile> config;
 	config.instantiate();
 	Error err = config->load(p_path);
 	if (err != OK) {
 		ERR_PRINT(vformat("Error loading GDExtension configuration file: '%s'.", p_path));
 		return err;
 	}
 	if (!config->has_section_key("configuration", "entry_symbol")) {
 		ERR_PRINT(vformat("GDExtension configuration file must contain a \"configuration/entry_symbol\" key: '%s'.", p_path));
 		return ERR_INVALID_DATA;
 	}
 	entry_symbol = config->get_value("configuration", "entry_symbol");
 	uint32_t compatibility_minimum[3] = { 0, 0, 0 };
 	if (config->has_section_key("configuration", "compatibility_minimum")) {
 		String compat_string = config->get_value("configuration", "compatibility_minimum");
 		Vector<int> parts = compat_string.split_ints(".");
 		for (int i = 0; i < parts.size(); i++) {
 			if (i >= 3) {
 				break;
 			}
 			if (parts[i] >= 0) {
 				compatibility_minimum[i] = parts[i];
 			}
 		}
 	} else {
 		ERR_PRINT(vformat("GDExtension configuration file must contain a \"configuration/compatibility_minimum\" key: '%s'.", p_path));
 		return ERR_INVALID_DATA;
 	}
 	if (compatibility_minimum[0] < 4 || (compatibility_minimum[0] == 4 && compatibility_minimum[1] == 0)) {
 		ERR_PRINT(vformat("GDExtension's compatibility_minimum (%d.%d.%d) must be at least 4.1.0: %s", compatibility_minimum[0], compatibility_minimum[1], compatibility_minimum[2], p_path));
 		return ERR_INVALID_DATA;
 	}
 	bool compatible = true;
 	// Check version lexicographically.
 	if (VERSION_MAJOR != compatibility_minimum[0]) {
 		compatible = VERSION_MAJOR > compatibility_minimum[0];
 	} else if (VERSION_MINOR != compatibility_minimum[1]) {
 		compatible = VERSION_MINOR > compatibility_minimum[1];
 	} else {
 		compatible = VERSION_PATCH >= compatibility_minimum[2];
 	}
 	if (!compatible) {
 		ERR_PRINT(vformat("GDExtension only compatible with Godot version %d.%d.%d or later: %s", compatibility_minimum[0], compatibility_minimum[1], compatibility_minimum[2], p_path));
 		return ERR_INVALID_DATA;
 	}
 	// Optionally check maximum compatibility.
 	if (config->has_section_key("configuration", "compatibility_maximum")) {
 		uint32_t compatibility_maximum[3] = { 0, 0, 0 };
 		String compat_string = config->get_value("configuration", "compatibility_maximum");
 		Vector<int> parts = compat_string.split_ints(".");
 		for (int i = 0; i < 3; i++) {
 			if (i < parts.size() && parts[i] >= 0) {
 				compatibility_maximum[i] = parts[i];
 			} else {
 				// If a version part is missing, set the maximum to an arbitrary high value.
 				compatibility_maximum[i] = 9999;
 			}
 		}
 		compatible = true;
 		if (VERSION_MAJOR != compatibility_maximum[0]) {
 			compatible = VERSION_MAJOR < compatibility_maximum[0];
 		} else if (VERSION_MINOR != compatibility_maximum[1]) {
 			compatible = VERSION_MINOR < compatibility_maximum[1];
 		}
 #if VERSION_PATCH
 		// #if check to avoid -Wtype-limits warning when 0.
 		else {
 			compatible = VERSION_PATCH <= compatibility_maximum[2];
 		}
 #endif
 		if (!compatible) {
 			ERR_PRINT(vformat("GDExtension only compatible with Godot version %s or earlier: %s", compat_string, p_path));
 			return ERR_INVALID_DATA;
 		}
 	}
 	library_path = find_extension_library(p_path, config, [](const String &p_feature) { return OS::get_singleton()->has_feature(p_feature); });
 	if (library_path.is_empty()) {
 		const String os_arch = OS::get_singleton()->get_name().to_lower() + "." + Engine::get_singleton()->get_architecture_name();
 		ERR_PRINT(vformat("No GDExtension library found for current OS and architecture (%s) in configuration file: %s", os_arch, p_path));
 		return ERR_FILE_NOT_FOUND;
 	}
 	is_static_library = library_path.ends_with(".a") || library_path.ends_with(".xcframework");
 	if (!library_path.is_resource_file() && !library_path.is_absolute_path()) {
 		library_path = p_path.get_base_dir().path_join(library_path);
 	}
 #ifdef TOOLS_ENABLED
 	is_reloadable = config->get_value("configuration", "reloadable", false);
 	update_last_modified_time(
 			FileAccess::get_modified_time(resource_path),
 			FileAccess::get_modified_time(library_path));
 #endif
 	library_dependencies = find_extension_dependencies(p_path, config, [](const String &p_feature) { return OS::get_singleton()->has_feature(p_feature); });
 	// Handle icons if any are specified.
 	if (config->has_section("icons")) {
 		List<String> keys;
 		config->get_section_keys("icons", &keys);
 		for (const String &key : keys) {
 			String icon_path = config->get_value("icons", key);
 			if (icon_path.is_relative_path()) {
 				icon_path = p_path.get_base_dir().path_join(icon_path);
 			}
 			class_icon_paths[key] = icon_path;
 		}
 	}
 	return OK;
 }
--- a/engine/core/extension/gdextension_library_loader.h
+++ b/engine/core/extension/gdextension_library_loader.h
@ -0,0 +1,85 @@
 /**************************************************************************/
 /*  gdextension_library_loader.h                                          */
 /**************************************************************************/
 /*                         This file is part of:                          */
 /*                             GODOT ENGINE                               */
 /*                        https://godotengine.org                         */
 /**************************************************************************/
 /* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
 /* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
 /*                                                                        */
 /* Permission is hereby granted, free of charge, to any person obtaining  */
 /* a copy of this software and associated documentation files (the        */
 /* "Software"), to deal in the Software without restriction, including    */
 /* without limitation the rights to use, copy, modify, merge, publish,    */
 /* distribute, sublicense, and/or sell copies of the Software, and to     */
 /* permit persons to whom the Software is furnished to do so, subject to  */
 /* the following conditions:                                              */
 /*                                                                        */
 /* The above copyright notice and this permission notice shall be         */
 /* included in all copies or substantial portions of the Software.        */
 /*                                                                        */
 /* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
 /* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
 /* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
 /* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
 /* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
 /* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
 /**************************************************************************/
 #ifndef GDEXTENSION_LIBRARY_LOADER_H
 #define GDEXTENSION_LIBRARY_LOADER_H
 #include <functional>
 #include "core/extension/gdextension_loader.h"
 #include "core/io/config_file.h"
 #include "core/os/shared_object.h"
 class GDExtensionLibraryLoader : public GDExtensionLoader {
 	friend class GDExtensionManager;
 	friend class GDExtension;
 private:
 	String resource_path;
 	void *library = nullptr; // pointer if valid.
 	String library_path;
 	String entry_symbol;
 	bool is_static_library = false;
 #ifdef TOOLS_ENABLED
 	bool is_reloadable = false;
 #endif
 	Vector<SharedObject> library_dependencies;
 	HashMap<String, String> class_icon_paths;
 #ifdef TOOLS_ENABLED
 	uint64_t resource_last_modified_time = 0;
 	uint64_t library_last_modified_time = 0;
 	void update_last_modified_time(uint64_t p_resource_last_modified_time, uint64_t p_library_last_modified_time) {
 		resource_last_modified_time = p_resource_last_modified_time;
 		library_last_modified_time = p_library_last_modified_time;
 	}
 #endif
 public:
 	static String find_extension_library(const String &p_path, Ref<ConfigFile> p_config, std::function<bool(String)> p_has_feature, PackedStringArray *r_tags = nullptr);
 	static Vector<SharedObject> find_extension_dependencies(const String &p_path, Ref<ConfigFile> p_config, std::function<bool(String)> p_has_feature);
 	virtual Error open_library(const String &p_path) override;
 	virtual Error initialize(GDExtensionInterfaceGetProcAddress p_get_proc_address, const Ref<GDExtension> &p_extension, GDExtensionInitialization *r_initialization) override;
 	virtual void close_library() override;
 	virtual bool is_library_open() const override;
 	virtual bool has_library_changed() const override;
 	virtual bool library_exists() const override;
 	Error parse_gdextension_file(const String &p_path);
 };
 #endif // GDEXTENSION_LIBRARY_LOADER_H
--- a/engine/core/extension/gdextension_loader.h
+++ b/engine/core/extension/gdextension_loader.h
@ -0,0 +1,48 @@
 /**************************************************************************/
 /*  gdextension_loader.h                                                  */
 /**************************************************************************/
 /*                         This file is part of:                          */
 /*                             GODOT ENGINE                               */
 /*                        https://godotengine.org                         */
 /**************************************************************************/
 /* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
 /* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
 /*                                                                        */
 /* Permission is hereby granted, free of charge, to any person obtaining  */
 /* a copy of this software and associated documentation files (the        */
 /* "Software"), to deal in the Software without restriction, including    */
 /* without limitation the rights to use, copy, modify, merge, publish,    */
 /* distribute, sublicense, and/or sell copies of the Software, and to     */
 /* permit persons to whom the Software is furnished to do so, subject to  */
 /* the following conditions:                                              */
 /*                                                                        */
 /* The above copyright notice and this permission notice shall be         */
 /* included in all copies or substantial portions of the Software.        */
 /*                                                                        */
 /* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
 /* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
 /* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
 /* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
 /* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
 /* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
 /**************************************************************************/
 #ifndef GDEXTENSION_LOADER_H
 #define GDEXTENSION_LOADER_H
 #include "core/object/ref_counted.h"
 class GDExtension;
 class GDExtensionLoader : public RefCounted {
 public:
 	virtual Error open_library(const String &p_path) = 0;
 	virtual Error initialize(GDExtensionInterfaceGetProcAddress p_get_proc_address, const Ref<GDExtension> &p_extension, GDExtensionInitialization *r_initialization) = 0;
 	virtual void close_library() = 0;
 	virtual bool is_library_open() const = 0;
 	virtual bool has_library_changed() const = 0;
 	virtual bool library_exists() const = 0;
 };
 #endif // GDEXTENSION_LOADER_H
--- a/engine/core/extension/gdextension_manager.cpp
+++ b/engine/core/extension/gdextension_manager.cpp
@ -30,15 +30,20 @@
 #include "gdextension_manager.h"
-#include "core/extension/gdextension_compat_hashes.h"
+#include "core/extension/gdextension_library_loader.h"
 #include "core/extension/gdextension_special_compat_hashes.h"
 #include "core/io/dir_access.h"
 #include "core/io/file_access.h"
 #include "core/object/script_language.h"
-GDExtensionManager::LoadStatus GDExtensionManager::_load_extension_internal(const Ref<GDExtension> &p_extension) {
+GDExtensionManager::LoadStatus GDExtensionManager::_load_extension_internal(const Ref<GDExtension> &p_extension, bool p_first_load) {
 	if (level >= 0) { // Already initialized up to some level.
-		int32_t minimum_level = p_extension->get_minimum_library_initialization_level();
+		int32_t minimum_level = 0;
-		if (minimum_level < MIN(level, GDExtension::INITIALIZATION_LEVEL_SCENE)) {
+		if (!p_first_load) {
-			return LOAD_STATUS_NEEDS_RESTART;
+			minimum_level = p_extension->get_minimum_library_initialization_level();
 			if (minimum_level < MIN(level, GDExtension::INITIALIZATION_LEVEL_SCENE)) {
 				return LOAD_STATUS_NEEDS_RESTART;
 			}
 		}
 		// Initialize up to current level.
 		for (int32_t i = minimum_level; i <= level; i++) {
@ -50,10 +55,20 @@ GDExtensionManager::LoadStatus GDExtensionManager::_load_extension_internal(cons
 		gdextension_class_icon_paths[kv.key] = kv.value;
 	}
 #ifdef TOOLS_ENABLED
 	// Signals that a new extension is loaded so GDScript can register new class names.
 	emit_signal("extension_loaded", p_extension);
 #endif
 	return LOAD_STATUS_OK;
 }
 GDExtensionManager::LoadStatus GDExtensionManager::_unload_extension_internal(const Ref<GDExtension> &p_extension) {
 #ifdef TOOLS_ENABLED
 	// Signals that a new extension is unloading so GDScript can unregister class names.
 	emit_signal("extension_unloading", p_extension);
 #endif
 	if (level >= 0) { // Already initialized up to some level.
 		// Deinitialize down from current level.
 		for (int32_t i = level; i >= GDExtension::INITIALIZATION_LEVEL_CORE; i--) {
@ -69,19 +84,35 @@ GDExtensionManager::LoadStatus GDExtensionManager::_unload_extension_internal(co
 }
 GDExtensionManager::LoadStatus GDExtensionManager::load_extension(const String &p_path) {
-	if (gdextension_map.has(p_path)) {
+	if (Engine::get_singleton()->is_recovery_mode_hint()) {
 		return LOAD_STATUS_ALREADY_LOADED;
 	}
 	Ref<GDExtension> extension = ResourceLoader::load(p_path);
 	if (extension.is_null()) {
 		return LOAD_STATUS_FAILED;
 	}
-	LoadStatus status = _load_extension_internal(extension);
+	Ref<GDExtensionLibraryLoader> loader;
 	loader.instantiate();
 	return GDExtensionManager::get_singleton()->load_extension_with_loader(p_path, loader);
 }
 GDExtensionManager::LoadStatus GDExtensionManager::load_extension_with_loader(const String &p_path, const Ref<GDExtensionLoader> &p_loader) {
 	DEV_ASSERT(p_loader.is_valid());
 	if (gdextension_map.has(p_path)) {
 		return LOAD_STATUS_ALREADY_LOADED;
 	}
 	Ref<GDExtension> extension;
 	extension.instantiate();
 	Error err = extension->open_library(p_path, p_loader);
 	if (err != OK) {
 		return LOAD_STATUS_FAILED;
 	}
 	LoadStatus status = _load_extension_internal(extension, true);
 	if (status != LOAD_STATUS_OK) {
 		return status;
 	}
 	extension->set_path(p_path);
 	gdextension_map[p_path] = extension;
 	return LOAD_STATUS_OK;
 }
@ -92,6 +123,10 @@ GDExtensionManager::LoadStatus GDExtensionManager::reload_extension(const String
 #else
 	ERR_FAIL_COND_V_MSG(!Engine::get_singleton()->is_extension_reloading_enabled(), LOAD_STATUS_FAILED, "GDExtension reloading is disabled.");
 	if (Engine::get_singleton()->is_recovery_mode_hint()) {
 		return LOAD_STATUS_FAILED;
 	}
 	if (!gdextension_map.has(p_path)) {
 		return LOAD_STATUS_NOT_LOADED;
 	}
@ -117,12 +152,12 @@ GDExtensionManager::LoadStatus GDExtensionManager::reload_extension(const String
 		extension->close_library();
 	}
-	Error err = GDExtensionResourceLoader::load_gdextension_resource(p_path, extension);
+	Error err = extension->open_library(p_path, extension->loader);
 	if (err != OK) {
 		return LOAD_STATUS_FAILED;
 	}
-	status = _load_extension_internal(extension);
+	status = _load_extension_internal(extension, false);
 	if (status != LOAD_STATUS_OK) {
 		return status;
 	}
@ -134,6 +169,10 @@ GDExtensionManager::LoadStatus GDExtensionManager::reload_extension(const String
 }
 GDExtensionManager::LoadStatus GDExtensionManager::unload_extension(const String &p_path) {
 	if (Engine::get_singleton()->is_recovery_mode_hint()) {
 		return LOAD_STATUS_FAILED;
 	}
 	if (!gdextension_map.has(p_path)) {
 		return LOAD_STATUS_NOT_LOADED;
 	}
@ -180,14 +219,28 @@ String GDExtensionManager::class_get_icon_path(const String &p_class) const {
 }
 void GDExtensionManager::initialize_extensions(GDExtension::InitializationLevel p_level) {
 	if (Engine::get_singleton()->is_recovery_mode_hint()) {
 		return;
 	}
 	ERR_FAIL_COND(int32_t(p_level) - 1 != level);
 	for (KeyValue<String, Ref<GDExtension>> &E : gdextension_map) {
 		E.value->initialize_library(p_level);
 		if (p_level == GDExtension::INITIALIZATION_LEVEL_EDITOR) {
 			for (const KeyValue<String, String> &kv : E.value->class_icon_paths) {
 				gdextension_class_icon_paths[kv.key] = kv.value;
 			}
 		}
 	}
 	level = p_level;
 }
 void GDExtensionManager::deinitialize_extensions(GDExtension::InitializationLevel p_level) {
 	if (Engine::get_singleton()->is_recovery_mode_hint()) {
 		return;
 	}
 	ERR_FAIL_COND(int32_t(p_level) != level);
 	for (KeyValue<String, Ref<GDExtension>> &E : gdextension_map) {
 		E.value->deinitialize_library(p_level);
@ -226,12 +279,16 @@ void GDExtensionManager::_reload_all_scripts() {
 #endif // TOOLS_ENABLED
 void GDExtensionManager::load_extensions() {
 	if (Engine::get_singleton()->is_recovery_mode_hint()) {
 		return;
 	}
 	Ref<FileAccess> f = FileAccess::open(GDExtension::get_extension_list_config_file(), FileAccess::READ);
 	while (f.is_valid() && !f->eof_reached()) {
 		String s = f->get_line().strip_edges();
 		if (!s.is_empty()) {
 			LoadStatus err = load_extension(s);
-			ERR_CONTINUE_MSG(err == LOAD_STATUS_FAILED, "Error loading extension: " + s);
+			ERR_CONTINUE_MSG(err == LOAD_STATUS_FAILED, vformat("Error loading extension: '%s'.", s));
 		}
 	}
@ -240,6 +297,9 @@ void GDExtensionManager::load_extensions() {
 void GDExtensionManager::reload_extensions() {
 #ifdef TOOLS_ENABLED
 	if (Engine::get_singleton()->is_recovery_mode_hint()) {
 		return;
 	}
 	bool reloaded = false;
 	for (const KeyValue<String, Ref<GDExtension>> &E : gdextension_map) {
 		if (!E.value->is_reloadable()) {
@ -261,6 +321,72 @@ void GDExtensionManager::reload_extensions() {
 #endif
 }
 bool GDExtensionManager::ensure_extensions_loaded(const HashSet<String> &p_extensions) {
 	Vector<String> extensions_added;
 	Vector<String> extensions_removed;
 	for (const String &E : p_extensions) {
 		if (!is_extension_loaded(E)) {
 			extensions_added.push_back(E);
 		}
 	}
 	Vector<String> loaded_extensions = get_loaded_extensions();
 	for (const String &loaded_extension : loaded_extensions) {
 		if (!p_extensions.has(loaded_extension)) {
 			// The extension may not have a .gdextension file.
 			const Ref<GDExtension> extension = GDExtensionManager::get_singleton()->get_extension(loaded_extension);
 			if (!extension->get_loader()->library_exists()) {
 				extensions_removed.push_back(loaded_extension);
 			}
 		}
 	}
 	String extension_list_config_file = GDExtension::get_extension_list_config_file();
 	if (p_extensions.size()) {
 		if (extensions_added.size() || extensions_removed.size()) {
 			// Extensions were added or removed.
 			Ref<FileAccess> f = FileAccess::open(extension_list_config_file, FileAccess::WRITE);
 			for (const String &E : p_extensions) {
 				f->store_line(E);
 			}
 		}
 	} else {
 		if (loaded_extensions.size() || FileAccess::exists(extension_list_config_file)) {
 			// Extensions were removed.
 			Ref<DirAccess> da = DirAccess::create(DirAccess::ACCESS_RESOURCES);
 			da->remove(extension_list_config_file);
 		}
 	}
 	bool needs_restart = false;
 	for (const String &extension : extensions_added) {
 		GDExtensionManager::LoadStatus st = GDExtensionManager::get_singleton()->load_extension(extension);
 		if (st == GDExtensionManager::LOAD_STATUS_NEEDS_RESTART) {
 			needs_restart = true;
 		}
 	}
 	for (const String &extension : extensions_removed) {
 		GDExtensionManager::LoadStatus st = GDExtensionManager::get_singleton()->unload_extension(extension);
 		if (st == GDExtensionManager::LOAD_STATUS_NEEDS_RESTART) {
 			needs_restart = true;
 		}
 	}
 #ifdef TOOLS_ENABLED
 	if (extensions_added.size() || extensions_removed.size()) {
 		// Emitting extensions_reloaded so EditorNode can reload Inspector and regenerate documentation.
 		emit_signal("extensions_reloaded");
 		// Reload all scripts to clear out old references.
 		callable_mp_static(&GDExtensionManager::_reload_all_scripts).call_deferred();
 	}
 #endif
 	return needs_restart;
 }
 GDExtensionManager *GDExtensionManager::get_singleton() {
 	return singleton;
 }
@ -281,6 +407,8 @@ void GDExtensionManager::_bind_methods() {
 	BIND_ENUM_CONSTANT(LOAD_STATUS_NEEDS_RESTART);
 	ADD_SIGNAL(MethodInfo("extensions_reloaded"));
 	ADD_SIGNAL(MethodInfo("extension_loaded", PropertyInfo(Variant::OBJECT, "extension", PROPERTY_HINT_RESOURCE_TYPE, "GDExtension")));
 	ADD_SIGNAL(MethodInfo("extension_unloading", PropertyInfo(Variant::OBJECT, "extension", PROPERTY_HINT_RESOURCE_TYPE, "GDExtension")));
 }
 GDExtensionManager *GDExtensionManager::singleton = nullptr;
@ -290,7 +418,7 @@ GDExtensionManager::GDExtensionManager() {
 	singleton = this;
 #ifndef DISABLE_DEPRECATED
-	GDExtensionCompatHashes::initialize();
+	GDExtensionSpecialCompatHashes::initialize();
 #endif
 }
@ -299,6 +427,6 @@ GDExtensionManager::~GDExtensionManager() {
 		singleton = nullptr;
 	}
 #ifndef DISABLE_DEPRECATED
-	GDExtensionCompatHashes::finalize();
+	GDExtensionSpecialCompatHashes::finalize();
 #endif
 }
--- a/engine/core/extension/gdextension_manager.h
+++ b/engine/core/extension/gdextension_manager.h
@ -54,7 +54,7 @@ public:
 	};
 private:
-	LoadStatus _load_extension_internal(const Ref<GDExtension> &p_extension);
+	LoadStatus _load_extension_internal(const Ref<GDExtension> &p_extension, bool p_first_load);
 	LoadStatus _unload_extension_internal(const Ref<GDExtension> &p_extension);
 #ifdef TOOLS_ENABLED
@ -63,6 +63,7 @@ private:
 public:
 	LoadStatus load_extension(const String &p_path);
 	LoadStatus load_extension_with_loader(const String &p_path, const Ref<GDExtensionLoader> &p_loader);
 	LoadStatus reload_extension(const String &p_path);
 	LoadStatus unload_extension(const String &p_path);
 	bool is_extension_loaded(const String &p_path) const;
@ -84,6 +85,7 @@ public:
 	void load_extensions();
 	void reload_extensions();
 	bool ensure_extensions_loaded(const HashSet<String> &p_extensions);
 	GDExtensionManager();
 	~GDExtensionManager();
--- a/engine/core/extension/gdextension_special_compat_hashes.cpp
+++ b/engine/core/extension/gdextension_special_compat_hashes.cpp
@ -1,5 +1,5 @@
 /**************************************************************************/
-/*  gdextension_compat_hashes.cpp                                         */
+/*  gdextension_special_compat_hashes.cpp                                 */
 /**************************************************************************/
 /*                         This file is part of:                          */
 /*                             GODOT ENGINE                               */
@ -28,16 +28,16 @@
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
 /**************************************************************************/
-#include "gdextension_compat_hashes.h"
+#include "gdextension_special_compat_hashes.h"
 #ifndef DISABLE_DEPRECATED
 #include "core/object/class_db.h"
 #include "core/variant/variant.h"
-HashMap<StringName, LocalVector<GDExtensionCompatHashes::Mapping>> GDExtensionCompatHashes::mappings;
+HashMap<StringName, LocalVector<GDExtensionSpecialCompatHashes::Mapping>> GDExtensionSpecialCompatHashes::mappings;
-bool GDExtensionCompatHashes::lookup_current_hash(const StringName &p_class, const StringName &p_method, uint32_t p_legacy_hash, uint32_t *r_current_hash) {
+bool GDExtensionSpecialCompatHashes::lookup_current_hash(const StringName &p_class, const StringName &p_method, uint32_t p_legacy_hash, uint32_t *r_current_hash) {
 	LocalVector<Mapping> *methods = mappings.getptr(p_class);
 	if (!methods) {
 		return false;
@ -53,7 +53,7 @@ bool GDExtensionCompatHashes::lookup_current_hash(const StringName &p_class, con
 	return false;
 }
-bool GDExtensionCompatHashes::get_legacy_hashes(const StringName &p_class, const StringName &p_method, Array &r_hashes, bool p_check_valid) {
+bool GDExtensionSpecialCompatHashes::get_legacy_hashes(const StringName &p_class, const StringName &p_method, Array &r_hashes, bool p_check_valid) {
 	LocalVector<Mapping> *methods = mappings.getptr(p_class);
 	if (!methods) {
 		return false;
@ -65,7 +65,7 @@ bool GDExtensionCompatHashes::get_legacy_hashes(const StringName &p_class, const
 			if (p_check_valid) {
 				MethodBind *mb = ClassDB::get_method_with_compatibility(p_class, p_method, mapping.current_hash);
 				if (!mb) {
-					WARN_PRINT(vformat("Compatibility hash %d for %s::%s() mapped to non-existent hash %d. Please update gdextension_compat_hashes.cpp.", mapping.legacy_hash, p_class, p_method, mapping.current_hash));
+					WARN_PRINT(vformat("Compatibility hash %d for %s::%s() mapped to non-existent hash %d. Please update gdextension_special_compat_hashes.cpp.", mapping.legacy_hash, p_class, p_method, mapping.current_hash));
 					continue;
 				}
 			}
@ -77,7 +77,7 @@ bool GDExtensionCompatHashes::get_legacy_hashes(const StringName &p_class, const
 	return found;
 }
-void GDExtensionCompatHashes::initialize() {
+void GDExtensionSpecialCompatHashes::initialize() {
 	// clang-format off
 	mappings.insert("AESContext", {
 		{ "start", 3167574919, 3122411423 },
@ -103,6 +103,14 @@ void GDExtensionCompatHashes::initialize() {
 	mappings.insert("AcceptDialog", {
 		{ "add_button", 4158837846, 3328440682 },
 	});
 	mappings.insert("AnimatedSprite2D", {
 		{ "play", 2372066587, 3269405555 },
 		{ "play_backwards", 1421762485, 3323268493 },
 	});
 	mappings.insert("AnimatedSprite3D", {
 		{ "play", 2372066587, 3269405555 },
 		{ "play_backwards", 1421762485, 3323268493 },
 	});
 	mappings.insert("Animation", {
 		{ "add_track", 2393815928, 3843682357 },
 		{ "track_insert_key", 1985425300, 808952278 },
@ -146,6 +154,12 @@ void GDExtensionCompatHashes::initialize() {
 		{ "travel", 3683006648, 3823612587 },
 		{ "start", 3683006648, 3823612587 },
 	});
 	mappings.insert("AnimationPlayer", {
 		{ "play", 3697947785, 3118260607 },
 		{ "play", 2221377757, 3118260607 },
 		{ "play_backwards", 3890664824, 2787282401 },
 		{ "play_with_capture", 3180464118, 1572969103 },
 	});
 	mappings.insert("ArrayMesh", {
 		{ "add_surface_from_arrays", 172284304, 1796411378 },
 	});
@ -241,22 +255,31 @@ void GDExtensionCompatHashes::initialize() {
 #endif
 	});
 	mappings.insert("DirAccess", {
-		{ "list_dir_begin", 2018049411, 2610976713 },
+		{ "list_dir_begin", 2018049411, 166280745 },
 		{ "list_dir_begin", 2610976713, 166280745 },
 		{ "copy", 198434953, 1063198817 },
 		{ "copy_absolute", 198434953, 1063198817 },
 	});
 	mappings.insert("DisplayServer", {
 		{ "global_menu_add_submenu_item", 3806306913, 2828985934 },
-		{ "global_menu_add_item", 3415468211, 3401266716 },
+		{ "global_menu_add_item", 3415468211, 3616842746 },
-		{ "global_menu_add_check_item", 3415468211, 3401266716 },
+		{ "global_menu_add_item", 3401266716, 3616842746 },
-		{ "global_menu_add_icon_item", 1700867534, 4245856523 },
+		{ "global_menu_add_check_item", 3415468211, 3616842746 },
-		{ "global_menu_add_icon_check_item", 1700867534, 4245856523 },
+		{ "global_menu_add_check_item", 3401266716, 3616842746 },
-		{ "global_menu_add_radio_check_item", 3415468211, 3401266716 },
+		{ "global_menu_add_icon_item", 1700867534, 3867083847 },
-		{ "global_menu_add_icon_radio_check_item", 1700867534, 4245856523 },
+		{ "global_menu_add_icon_item", 4245856523, 3867083847 },
-		{ "global_menu_add_multistate_item", 635750054, 3431222859 },
+		{ "global_menu_add_icon_check_item", 1700867534, 3867083847 },
 		{ "global_menu_add_icon_check_item", 4245856523, 3867083847 },
 		{ "global_menu_add_radio_check_item", 3415468211, 3616842746 },
 		{ "global_menu_add_radio_check_item", 3401266716, 3616842746 },
 		{ "global_menu_add_icon_radio_check_item", 1700867534, 3867083847 },
 		{ "global_menu_add_icon_radio_check_item", 4245856523, 3867083847 },
 		{ "global_menu_add_multistate_item", 635750054, 3297554655 },
 		{ "global_menu_add_multistate_item", 3431222859, 3297554655 },
 		{ "global_menu_add_separator", 1041533178, 3214812433 },
 		{ "tts_speak", 3741216677, 903992738 },
-		{ "is_touchscreen_available", 4162880507, 3323674545 },
+		{ "is_touchscreen_available", 4162880507, 36873697 },
 		{ "is_touchscreen_available", 3323674545, 36873697 },
 		{ "screen_set_orientation", 2629526904, 2211511631 },
 		{ "window_get_native_handle", 2709193271, 1096425680 },
 		{ "window_set_title", 3043792800, 441246282 },
@ -286,6 +309,12 @@ void GDExtensionCompatHashes::initialize() {
 		{ "virtual_keyboard_show", 860410478, 3042891259 },
 #endif
 	});
 	mappings.insert("EditorExportPlatform", {
 		{ "export_project_files", 425454869, 1063735070 },
 	});
 	mappings.insert("EditorProperty", {
 		{ "emit_changed", 3069422438, 1822500399 },
 	});
 	mappings.insert("ENetConnection", {
 		{ "create_host_bound", 866250949, 1515002313 },
 		{ "connect_to_host", 385984708, 2171300490 },
@ -453,18 +482,35 @@ void GDExtensionCompatHashes::initialize() {
 	mappings.insert("MultiplayerAPI", {
 		{ "rpc", 1833408346, 2077486355 },
 	});
 	mappings.insert("NativeMenu", {
 		{ "add_item", 2553375659, 980552939 },
 		{ "add_check_item", 2553375659, 980552939 },
 		{ "add_icon_item", 2987595282, 1372188274 },
 		{ "add_icon_check_item", 2987595282, 1372188274 },
 		{ "add_radio_check_item", 2553375659, 980552939 },
 		{ "add_icon_radio_check_item", 2987595282, 1372188274 },
 		{ "add_multistate_item", 1558592568, 2674635658 },
 	});
 	mappings.insert("NavigationMeshGenerator", {
-		{ "parse_source_geometry_data", 3703028813, 685862123 },
+		{ "parse_source_geometry_data", 3703028813, 3172802542 },
-		{ "bake_from_source_geometry_data", 3669016597, 2469318639 },
+		{ "parse_source_geometry_data", 685862123, 3172802542 },
 		{ "bake_from_source_geometry_data", 3669016597, 1286748856 },
 		{ "bake_from_source_geometry_data", 2469318639, 1286748856 },
 	});
 	mappings.insert("NavigationServer2D", {
 		{ "map_get_path", 56240621, 3146466012 },
 		{ "parse_source_geometry_data", 1176164995, 1766905497 },
 		{ "bake_from_source_geometry_data", 2909414286, 2179660022 },
 		{ "bake_from_source_geometry_data_async", 2909414286, 2179660022 },
 	});
 	mappings.insert("NavigationServer3D", {
 		{ "map_get_path", 2121045993, 1187418690 },
-		{ "parse_source_geometry_data", 3703028813, 685862123 },
+		{ "parse_source_geometry_data", 3703028813, 3172802542 },
-		{ "bake_from_source_geometry_data", 3669016597, 2469318639 },
+		{ "parse_source_geometry_data", 685862123, 3172802542 },
-		{ "bake_from_source_geometry_data_async", 3669016597, 2469318639 },
+		{ "bake_from_source_geometry_data", 3669016597, 1286748856 },
 		{ "bake_from_source_geometry_data", 2469318639, 1286748856 },
 		{ "bake_from_source_geometry_data_async", 3669016597, 1286748856 },
 		{ "bake_from_source_geometry_data_async", 2469318639, 1286748856 },
 	});
 	mappings.insert("Node", {
 		{ "add_child", 3070154285, 3863233950 },
@ -504,6 +550,9 @@ void GDExtensionCompatHashes::initialize() {
 		{ "tr", 2475554935, 1195764410 },
 		{ "tr_n", 4021311862, 162698058 },
 	});
 	mappings.insert("OpenXRAPIExtension", {
 		{ "transform_from_pose", 3255299855, 2963875352 },
 	});
 	mappings.insert("OptionButton", {
 		{ "add_item", 3043792800, 2697778442 },
 		{ "add_icon_item", 3944051090, 3781678508 },
@ -631,6 +680,11 @@ void GDExtensionCompatHashes::initialize() {
 	mappings.insert("ProjectSettings", {
 		{ "load_resource_pack", 3001721055, 708980503 },
 	});
 	mappings.insert("RDShaderFile", {
 		{ "bake_from_source_geometry_data_async", 2469318639, 1286748856 },
 		{ "set_bytecode", 1558064255, 1526857008 },
 		{ "get_spirv", 3340165340, 2689310080 },
 	});
 	mappings.insert("RegEx", {
 		{ "search", 4087180739, 3365977994 },
 		{ "search_all", 3354100289, 849021363 },
@ -722,7 +776,7 @@ void GDExtensionCompatHashes::initialize() {
 		{ "push_paragraph", 3218895358, 3089306873 },
 		{ "push_list", 4036303897, 3017143144 },
 		{ "push_table", 1125058220, 2623499273 },
-		{ "set_table_column_expand", 4132157579, 2185176273 },
+		{ "set_table_column_expand", 4258957458, 2185176273 },
 #ifdef REAL_T_IS_DOUBLE
 		{ "add_image", 3346058748, 1507062345 },
 		{ "push_dropcap", 981432822, 763534173 },
@ -863,6 +917,9 @@ void GDExtensionCompatHashes::initialize() {
 		{ "set_cells_terrain_path", 3072115677, 3578627656 },
 		{ "get_used_cells_by_id", 4152068407, 2931012785 },
 	});
 	mappings.insert("TileMapLayer", {
 		{ "notify_runtime_tile_data_update", 2275361663, 3218959716 },
 	});
 	mappings.insert("TileMapPattern", {
 		{ "set_cell", 634000503, 2224802556 },
 	});
@ -964,7 +1021,7 @@ void GDExtensionCompatHashes::initialize() {
 	// clang-format on
 }
-void GDExtensionCompatHashes::finalize() {
+void GDExtensionSpecialCompatHashes::finalize() {
 	mappings.clear();
 }
--- a/engine/core/extension/gdextension_special_compat_hashes.h
+++ b/engine/core/extension/gdextension_special_compat_hashes.h
@ -1,5 +1,5 @@
 /**************************************************************************/
-/*  gdextension_compat_hashes.h                                           */
+/*  gdextension_special_compat_hashes.h                                   */
 /**************************************************************************/
 /*                         This file is part of:                          */
 /*                             GODOT ENGINE                               */
@ -28,8 +28,8 @@
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
 /**************************************************************************/
-#ifndef GDEXTENSION_COMPAT_HASHES_H
+#ifndef GDEXTENSION_SPECIAL_COMPAT_HASHES_H
-#define GDEXTENSION_COMPAT_HASHES_H
+#define GDEXTENSION_SPECIAL_COMPAT_HASHES_H
 #ifndef DISABLE_DEPRECATED
@ -37,7 +37,11 @@
 #include "core/templates/hash_map.h"
 #include "core/templates/local_vector.h"
-class GDExtensionCompatHashes {
+// Note: In most situations, compatibility methods should be registered via ClassDB::bind_compatibility_method().
 //       This class is only meant to be used in exceptional circumstances, for example, when Godot's hashing
 //       algorithm changes and registering compatibility methods for all affect methods would be onerous.
 class GDExtensionSpecialCompatHashes {
 	struct Mapping {
 		StringName method;
 		uint32_t legacy_hash;
@ -55,4 +59,4 @@ public:
 #endif // DISABLE_DEPRECATED
-#endif // GDEXTENSION_COMPAT_HASHES_H
+#endif // GDEXTENSION_SPECIAL_COMPAT_HASHES_H
--- a/engine/core/extension/make_wrappers.py
+++ b/engine/core/extension/make_wrappers.py
@ -55,10 +55,10 @@ def generate_mod_version(argcount, const=False, returns=False):
 proto_ex = """
 #define EXBIND$VER($RETTYPE m_name$ARG) \\
-GDVIRTUAL$VER($RETTYPE_##m_name$ARG)\\
+GDVIRTUAL$VER_REQUIRED($RETTYPE_##m_name$ARG)\\
 virtual $RETVAL m_name($FUNCARGS) $CONST override { \\
    $RETPRE\\
-    GDVIRTUAL_REQUIRED_CALL(_##m_name$CALLARGS$RETREF);\\
+    GDVIRTUAL_CALL(_##m_name$CALLARGS$RETREF);\\
    $RETPOST\\
 }
 """
--- a/engine/core/input/SCsub
+++ b/engine/core/input/SCsub
@ -1,4 +1,5 @@
 #!/usr/bin/env python
 from misc.utility.scons_hints import *
 Import("env")
--- a/engine/core/input/gamecontrollerdb.txt
+++ b/engine/core/input/gamecontrollerdb.txt
--- a/engine/core/input/godotcontrollerdb.txt
+++ b/engine/core/input/godotcontrollerdb.txt
@ -8,7 +8,7 @@ __XINPUT_DEVICE__,XInput Gamepad,a:b12,b:b13,x:b14,y:b15,start:b4,guide:b10,back
 Default Android Gamepad,Default Controller,leftx:a0,lefty:a1,dpdown:h0.4,rightstick:b8,rightshoulder:b10,rightx:a2,start:b6,righty:a3,dpleft:h0.8,lefttrigger:a4,x:b2,dpup:h0.1,back:b4,leftstick:b7,leftshoulder:b9,y:b3,a:b0,dpright:h0.2,righttrigger:a5,b:b1,platform:Android,
 # Web
-standard,Standard Gamepad Mapping,leftx:a0,lefty:a1,rightx:a2,righty:a3,lefttrigger:b6,righttrigger:b7,a:b0,b:b1,x:b2,y:b3,leftshoulder:b4,rightshoulder:b5,back:b8,start:b9,leftstick:b10,rightstick:b11,dpup:b12,dpdown:b13,dpleft:b14,dpright:b15,guide:b16,leftstick:b10,rightstick:b11,platform:Web,
+standard,Standard Gamepad Mapping,leftx:a0,lefty:a1,rightx:a2,righty:a3,lefttrigger:+a4,righttrigger:+a5,a:b0,b:b1,x:b2,y:b3,leftshoulder:b4,rightshoulder:b5,back:b8,start:b9,leftstick:b10,rightstick:b11,dpup:b12,dpdown:b13,dpleft:b14,dpright:b15,guide:b16,leftstick:b10,rightstick:b11,platform:Web,
 Linux24c6581a,PowerA Xbox One Cabled,a:b0,b:b1,y:b3,x:b2,start:b7,guide:b8,back:b6,leftstick:b9,rightstick:b10,leftshoulder:b4,rightshoulder:b5,dpup:-a7,dpleft:-a6,dpdown:+a7,dpright:+a6,leftx:a0,lefty:a1,rightx:a3,righty:a4,lefttrigger:a2,righttrigger:a5,platform:Web,
 Linux0e6f0301,Logic 3 Controller (xbox compatible),a:b0,b:b1,y:b3,x:b2,start:b7,guide:b8,back:b6,leftstick:b9,rightstick:b10,leftshoulder:b4,rightshoulder:b5,dpup:-a7,dpleft:-a6,dpdown:+a7,dpright:+a6,leftx:a0,lefty:a1,rightx:a3,righty:a4,lefttrigger:a2,righttrigger:a5,platform:Web,
 Linux045e028e,Microsoft X-Box 360 pad,a:b0,b:b1,y:b3,x:b2,start:b7,guide:b8,back:b6,leftstick:b9,rightstick:b10,leftshoulder:b4,rightshoulder:b5,dpup:-a7,dpleft:-a6,dpdown:+a7,dpright:+a6,leftx:a0,lefty:a1,rightx:a3,righty:a4,lefttrigger:a2,righttrigger:a5,platform:Web,
--- a/engine/core/input/input.cpp
+++ b/engine/core/input/input.cpp
@ -77,6 +77,10 @@ Input *Input::singleton = nullptr;
 void (*Input::set_mouse_mode_func)(Input::MouseMode) = nullptr;
 Input::MouseMode (*Input::get_mouse_mode_func)() = nullptr;
 void (*Input::set_mouse_mode_override_func)(Input::MouseMode) = nullptr;
 Input::MouseMode (*Input::get_mouse_mode_override_func)() = nullptr;
 void (*Input::set_mouse_mode_override_enabled_func)(bool) = nullptr;
 bool (*Input::is_mouse_mode_override_enabled_func)() = nullptr;
 void (*Input::warp_mouse_func)(const Vector2 &p_position) = nullptr;
 Input::CursorShape (*Input::get_current_cursor_shape_func)() = nullptr;
 void (*Input::set_custom_mouse_cursor_func)(const Ref<Resource> &, Input::CursorShape, const Vector2 &) = nullptr;
@ -86,7 +90,7 @@ Input *Input::get_singleton() {
 }
 void Input::set_mouse_mode(MouseMode p_mode) {
-	ERR_FAIL_INDEX((int)p_mode, 5);
+	ERR_FAIL_INDEX(p_mode, MouseMode::MOUSE_MODE_MAX);
 	set_mouse_mode_func(p_mode);
 }
@ -94,6 +98,23 @@ Input::MouseMode Input::get_mouse_mode() const {
 	return get_mouse_mode_func();
 }
 void Input::set_mouse_mode_override(MouseMode p_mode) {
 	ERR_FAIL_INDEX(p_mode, MouseMode::MOUSE_MODE_MAX);
 	set_mouse_mode_override_func(p_mode);
 }
 Input::MouseMode Input::get_mouse_mode_override() const {
 	return get_mouse_mode_override_func();
 }
 void Input::set_mouse_mode_override_enabled(bool p_override_enabled) {
 	set_mouse_mode_override_enabled_func(p_override_enabled);
 }
 bool Input::is_mouse_mode_override_enabled() {
 	return is_mouse_mode_override_enabled_func();
 }
 void Input::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("is_anything_pressed"), &Input::is_anything_pressed);
 	ClassDB::bind_method(D_METHOD("is_key_pressed", "keycode"), &Input::is_key_pressed);
@ -160,6 +181,7 @@ void Input::_bind_methods() {
 	BIND_ENUM_CONSTANT(MOUSE_MODE_CAPTURED);
 	BIND_ENUM_CONSTANT(MOUSE_MODE_CONFINED);
 	BIND_ENUM_CONSTANT(MOUSE_MODE_CONFINED_HIDDEN);
 	BIND_ENUM_CONSTANT(MOUSE_MODE_MAX);
 	BIND_ENUM_CONSTANT(CURSOR_ARROW);
 	BIND_ENUM_CONSTANT(CURSOR_IBEAM);
@ -197,7 +219,7 @@ void Input::get_argument_options(const StringName &p_function, int p_idx, List<S
 				continue;
 			}
-			String name = pi.name.substr(pi.name.find("/") + 1, pi.name.length());
+			String name = pi.name.substr(pi.name.find_char('/') + 1, pi.name.length());
 			r_options->push_back(name.quote());
 		}
 	}
@ -252,6 +274,10 @@ Input::VelocityTrack::VelocityTrack() {
 bool Input::is_anything_pressed() const {
 	_THREAD_SAFE_METHOD_
 	if (disable_input) {
 		return false;
 	}
 	if (!keys_pressed.is_empty() || !joy_buttons_pressed.is_empty() || !mouse_button_mask.is_empty()) {
 		return true;
 	}
@ -265,23 +291,63 @@ bool Input::is_anything_pressed() const {
 	return false;
 }
 bool Input::is_anything_pressed_except_mouse() const {
 	_THREAD_SAFE_METHOD_
 	if (disable_input) {
 		return false;
 	}
 	if (!keys_pressed.is_empty() || !joy_buttons_pressed.is_empty()) {
 		return true;
 	}
 	for (const KeyValue<StringName, Input::ActionState> &E : action_states) {
 		if (E.value.cache.pressed) {
 			return true;
 		}
 	}
 	return false;
 }
 bool Input::is_key_pressed(Key p_keycode) const {
 	_THREAD_SAFE_METHOD_
 	if (disable_input) {
 		return false;
 	}
 	return keys_pressed.has(p_keycode);
 }
 bool Input::is_physical_key_pressed(Key p_keycode) const {
 	_THREAD_SAFE_METHOD_
 	if (disable_input) {
 		return false;
 	}
 	return physical_keys_pressed.has(p_keycode);
 }
 bool Input::is_key_label_pressed(Key p_keycode) const {
 	_THREAD_SAFE_METHOD_
 	if (disable_input) {
 		return false;
 	}
 	return key_label_pressed.has(p_keycode);
 }
 bool Input::is_mouse_button_pressed(MouseButton p_button) const {
 	_THREAD_SAFE_METHOD_
 	if (disable_input) {
 		return false;
 	}
 	return mouse_button_mask.has_flag(mouse_button_to_mask(p_button));
 }
@ -295,11 +361,21 @@ static JoyButton _combine_device(JoyButton p_value, int p_device) {
 bool Input::is_joy_button_pressed(int p_device, JoyButton p_button) const {
 	_THREAD_SAFE_METHOD_
 	if (disable_input) {
 		return false;
 	}
 	return joy_buttons_pressed.has(_combine_device(p_button, p_device));
 }
 bool Input::is_action_pressed(const StringName &p_action, bool p_exact) const {
 	ERR_FAIL_COND_V_MSG(!InputMap::get_singleton()->has_action(p_action), false, InputMap::get_singleton()->suggest_actions(p_action));
 	if (disable_input) {
 		return false;
 	}
 	HashMap<StringName, ActionState>::ConstIterator E = action_states.find(p_action);
 	if (!E) {
 		return false;
@ -310,6 +386,11 @@ bool Input::is_action_pressed(const StringName &p_action, bool p_exact) const {
 bool Input::is_action_just_pressed(const StringName &p_action, bool p_exact) const {
 	ERR_FAIL_COND_V_MSG(!InputMap::get_singleton()->has_action(p_action), false, InputMap::get_singleton()->suggest_actions(p_action));
 	if (disable_input) {
 		return false;
 	}
 	HashMap<StringName, ActionState>::ConstIterator E = action_states.find(p_action);
 	if (!E) {
 		return false;
@ -331,6 +412,11 @@ bool Input::is_action_just_pressed(const StringName &p_action, bool p_exact) con
 bool Input::is_action_just_released(const StringName &p_action, bool p_exact) const {
 	ERR_FAIL_COND_V_MSG(!InputMap::get_singleton()->has_action(p_action), false, InputMap::get_singleton()->suggest_actions(p_action));
 	if (disable_input) {
 		return false;
 	}
 	HashMap<StringName, ActionState>::ConstIterator E = action_states.find(p_action);
 	if (!E) {
 		return false;
@ -352,6 +438,11 @@ bool Input::is_action_just_released(const StringName &p_action, bool p_exact) co
 float Input::get_action_strength(const StringName &p_action, bool p_exact) const {
 	ERR_FAIL_COND_V_MSG(!InputMap::get_singleton()->has_action(p_action), 0.0, InputMap::get_singleton()->suggest_actions(p_action));
 	if (disable_input) {
 		return 0.0f;
 	}
 	HashMap<StringName, ActionState>::ConstIterator E = action_states.find(p_action);
 	if (!E) {
 		return 0.0f;
@ -366,6 +457,11 @@ float Input::get_action_strength(const StringName &p_action, bool p_exact) const
 float Input::get_action_raw_strength(const StringName &p_action, bool p_exact) const {
 	ERR_FAIL_COND_V_MSG(!InputMap::get_singleton()->has_action(p_action), 0.0, InputMap::get_singleton()->suggest_actions(p_action));
 	if (disable_input) {
 		return 0.0f;
 	}
 	HashMap<StringName, ActionState>::ConstIterator E = action_states.find(p_action);
 	if (!E) {
 		return 0.0f;
@ -410,6 +506,11 @@ Vector2 Input::get_vector(const StringName &p_negative_x, const StringName &p_po
 float Input::get_joy_axis(int p_device, JoyAxis p_axis) const {
 	_THREAD_SAFE_METHOD_
 	if (disable_input) {
 		return 0;
 	}
 	JoyAxis c = _combine_device(p_axis, p_device);
 	if (_joy_axis.has(c)) {
 		return _joy_axis[c];
@ -491,10 +592,9 @@ void Input::joy_connection_changed(int p_idx, bool p_connected, const String &p_
 		for (int i = 0; i < map_db.size(); i++) {
 			if (js.uid == map_db[i].uid) {
 				mapping = i;
 				js.name = map_db[i].name;
 			}
 		}
-		js.mapping = mapping;
+		_set_joypad_mapping(js, mapping);
 	} else {
 		js.connected = false;
 		for (int i = 0; i < (int)JoyButton::MAX; i++) {
@ -513,21 +613,49 @@ void Input::joy_connection_changed(int p_idx, bool p_connected, const String &p_
 Vector3 Input::get_gravity() const {
 	_THREAD_SAFE_METHOD_
 #ifdef DEBUG_ENABLED
 	if (!gravity_enabled) {
 		WARN_PRINT_ONCE("`input_devices/sensors/enable_gravity` is not enabled in project settings.");
 	}
 #endif
 	return gravity;
 }
 Vector3 Input::get_accelerometer() const {
 	_THREAD_SAFE_METHOD_
 #ifdef DEBUG_ENABLED
 	if (!accelerometer_enabled) {
 		WARN_PRINT_ONCE("`input_devices/sensors/enable_accelerometer` is not enabled in project settings.");
 	}
 #endif
 	return accelerometer;
 }
 Vector3 Input::get_magnetometer() const {
 	_THREAD_SAFE_METHOD_
 #ifdef DEBUG_ENABLED
 	if (!magnetometer_enabled) {
 		WARN_PRINT_ONCE("`input_devices/sensors/enable_magnetometer` is not enabled in project settings.");
 	}
 #endif
 	return magnetometer;
 }
 Vector3 Input::get_gyroscope() const {
 	_THREAD_SAFE_METHOD_
 #ifdef DEBUG_ENABLED
 	if (!gyroscope_enabled) {
 		WARN_PRINT_ONCE("`input_devices/sensors/enable_gyroscope` is not enabled in project settings.");
 	}
 #endif
 	return gyroscope;
 }
@ -662,6 +790,7 @@ void Input::_parse_input_event_impl(const Ref<InputEvent> &p_event, bool p_is_em
 				button_event->set_canceled(st->is_canceled());
 				button_event->set_button_index(MouseButton::LEFT);
 				button_event->set_double_click(st->is_double_tap());
 				button_event->set_window_id(st->get_window_id());
 				BitField<MouseButtonMask> ev_bm = mouse_button_mask;
 				if (st->is_pressed()) {
@ -699,6 +828,7 @@ void Input::_parse_input_event_impl(const Ref<InputEvent> &p_event, bool p_is_em
 			motion_event->set_velocity(sd->get_velocity());
 			motion_event->set_screen_velocity(sd->get_screen_velocity());
 			motion_event->set_button_mask(mouse_button_mask);
 			motion_event->set_window_id(sd->get_window_id());
 			_parse_input_event_impl(motion_event, true);
 		}
@ -906,7 +1036,7 @@ void Input::action_release(const StringName &p_action) {
 	// Create or retrieve existing action.
 	ActionState &action_state = action_states[p_action];
-	action_state.cache.pressed = 0;
+	action_state.cache.pressed = false;
 	action_state.cache.strength = 0.0;
 	action_state.cache.raw_strength = 0.0;
 	// As input may come in part way through a physics tick, the earliest we can react to it is the next physics tick.
@ -1455,9 +1585,6 @@ void Input::parse_mapping(const String &p_mapping) {
 		return;
 	}
 	CharString uid;
 	uid.resize(17);
 	mapping.uid = entry[0];
 	mapping.name = entry[1];
@ -1558,26 +1685,94 @@ void Input::add_joy_mapping(const String &p_mapping, bool p_update_existing) {
 		for (KeyValue<int, Joypad> &E : joy_names) {
 			Joypad &joy = E.value;
 			if (joy.uid == uid) {
-				joy.mapping = map_db.size() - 1;
+				_set_joypad_mapping(joy, map_db.size() - 1);
 			}
 		}
 	}
 }
 void Input::remove_joy_mapping(const String &p_guid) {
 	// One GUID can exist multiple times in `map_db`, and
 	// `add_joy_mapping` can choose not to update the existing mapping,
 	// so the indices can be all over the place. Therefore we need to remember them.
 	Vector<int> removed_idx;
 	int min_removed_idx = -1;
 	int max_removed_idx = -1;
 	int fallback_mapping_offset = 0;
 	for (int i = map_db.size() - 1; i >= 0; i--) {
 		if (p_guid == map_db[i].uid) {
 			map_db.remove_at(i);
 			if (max_removed_idx == -1) {
 				max_removed_idx = i;
 			}
 			min_removed_idx = i;
 			removed_idx.push_back(i);
 			if (i < fallback_mapping) {
 				fallback_mapping_offset++;
 			} else if (i == fallback_mapping) {
 				fallback_mapping = -1;
 				WARN_PRINT_ONCE(vformat("Removed fallback joypad input mapping \"%s\". This could lead to joypads not working as intended.", p_guid));
 			}
 		}
 	}
 	if (min_removed_idx == -1) {
 		return; // Nothing removed.
 	}
 	if (fallback_mapping > 0) {
 		// Fix the shifted index.
 		fallback_mapping -= fallback_mapping_offset;
 	}
 	int removed_idx_size = removed_idx.size();
 	// Update joypad mapping references: some
 	// * should use the fallback_mapping (if set; if not, they get unmapped), or
 	// * need their mapping reference fixed, because the deletion(s) offset them.
 	for (KeyValue<int, Joypad> &E : joy_names) {
 		Joypad &joy = E.value;
-		if (joy.uid == p_guid) {
+		if (joy.mapping < min_removed_idx) {
-			joy.mapping = -1;
+			continue; // Not affected.
 		}
 		if (joy.mapping > max_removed_idx) {
 			_set_joypad_mapping(joy, joy.mapping - removed_idx_size);
 			continue; // Simple offset fix.
 		}
 		// removed_idx is in reverse order (ie. high to low), because the first loop is in reverse order.
 		for (int i = 0; i < removed_idx.size(); i++) {
 			if (removed_idx[i] == joy.mapping) {
 				// Set to fallback_mapping, if defined, else unmap the joypad.
 				// Currently, the fallback_mapping is only set internally, and only for Android.
 				_set_joypad_mapping(joy, fallback_mapping);
 				break;
 			}
 			if (removed_idx[i] < joy.mapping) {
 				// Complex offset fix:
 				// This mapping was shifted by `(removed_idx_size - i)` deletions.
 				_set_joypad_mapping(joy, joy.mapping - (removed_idx_size - i));
 				break;
 			}
 		}
 	}
 }
 void Input::_set_joypad_mapping(Joypad &p_js, int p_map_index) {
 	if (p_map_index != fallback_mapping && p_map_index >= 0 && p_map_index < map_db.size() && p_js.uid != "__XINPUT_DEVICE__") {
 		// Prefer the joypad name defined in the mapping.
 		// Exceptions:
 		// * On Windows for XInput devices the mapping would change the joypad's name to a collective name.
 		// * A fallback mapping is not allowed to override the joypad's name.
 		p_js.name = map_db[p_map_index].name;
 	}
 	p_js.mapping = p_map_index;
 }
 void Input::set_fallback_mapping(const String &p_guid) {
 	for (int i = 0; i < map_db.size(); i++) {
 		if (map_db[i].uid == p_guid) {
@ -1634,6 +1829,14 @@ int Input::get_unused_joy_id() {
 	return -1;
 }
 void Input::set_disable_input(bool p_disable) {
 	disable_input = p_disable;
 }
 bool Input::is_input_disabled() const {
 	return disable_input;
 }
 Input::Input() {
 	singleton = this;
@ -1683,6 +1886,11 @@ Input::Input() {
 		// Always use standard behavior in the editor.
 		legacy_just_pressed_behavior = false;
 	}
 	accelerometer_enabled = GLOBAL_DEF_RST_BASIC("input_devices/sensors/enable_accelerometer", false);
 	gravity_enabled = GLOBAL_DEF_RST_BASIC("input_devices/sensors/enable_gravity", false);
 	gyroscope_enabled = GLOBAL_DEF_RST_BASIC("input_devices/sensors/enable_gyroscope", false);
 	magnetometer_enabled = GLOBAL_DEF_RST_BASIC("input_devices/sensors/enable_magnetometer", false);
 }
 Input::~Input() {
--- a/engine/core/input/input.h
+++ b/engine/core/input/input.h
@ -47,12 +47,14 @@ class Input : public Object {
 	static constexpr uint64_t MAX_EVENT = 32;
 public:
 	// Keep synced with "DisplayServer::MouseMode" enum.
 	enum MouseMode {
 		MOUSE_MODE_VISIBLE,
 		MOUSE_MODE_HIDDEN,
 		MOUSE_MODE_CAPTURED,
 		MOUSE_MODE_CONFINED,
 		MOUSE_MODE_CONFINED_HIDDEN,
 		MOUSE_MODE_MAX,
 	};
 #undef CursorShape
@ -92,13 +94,18 @@ private:
 	RBSet<JoyButton> joy_buttons_pressed;
 	RBMap<JoyAxis, float> _joy_axis;
 	//RBMap<StringName,int> custom_action_press;
 	bool gravity_enabled = false;
 	Vector3 gravity;
 	bool accelerometer_enabled = false;
 	Vector3 accelerometer;
 	bool magnetometer_enabled = false;
 	Vector3 magnetometer;
 	bool gyroscope_enabled = false;
 	Vector3 gyroscope;
 	Vector2 mouse_pos;
 	int64_t mouse_window = 0;
 	bool legacy_just_pressed_behavior = false;
 	bool disable_input = false;
 	struct ActionState {
 		uint64_t pressed_physics_frame = UINT64_MAX;
@ -175,7 +182,7 @@ private:
 	HashSet<uint32_t> ignored_device_ids;
-	int fallback_mapping = -1;
+	int fallback_mapping = -1; // Index of the guid in map_db.
 	CursorShape default_shape = CURSOR_ARROW;
@ -236,6 +243,8 @@ private:
 	Vector<JoyDeviceMapping> map_db;
 	void _set_joypad_mapping(Joypad &p_js, int p_map_index);
 	JoyEvent _get_mapped_button_event(const JoyDeviceMapping &mapping, JoyButton p_button);
 	JoyEvent _get_mapped_axis_event(const JoyDeviceMapping &mapping, JoyAxis p_axis, float p_value, JoyAxisRange &r_range);
 	void _get_mapped_hat_events(const JoyDeviceMapping &mapping, HatDir p_hat, JoyEvent r_events[(size_t)HatDir::MAX]);
@ -257,6 +266,10 @@ private:
 	static void (*set_mouse_mode_func)(MouseMode);
 	static MouseMode (*get_mouse_mode_func)();
 	static void (*set_mouse_mode_override_func)(MouseMode);
 	static MouseMode (*get_mouse_mode_override_func)();
 	static void (*set_mouse_mode_override_enabled_func)(bool);
 	static bool (*is_mouse_mode_override_enabled_func)();
 	static void (*warp_mouse_func)(const Vector2 &p_position);
 	static CursorShape (*get_current_cursor_shape_func)();
@ -275,6 +288,10 @@ protected:
 public:
 	void set_mouse_mode(MouseMode p_mode);
 	MouseMode get_mouse_mode() const;
 	void set_mouse_mode_override(MouseMode p_mode);
 	MouseMode get_mouse_mode_override() const;
 	void set_mouse_mode_override_enabled(bool p_override_enabled);
 	bool is_mouse_mode_override_enabled();
 #ifdef TOOLS_ENABLED
 	void get_argument_options(const StringName &p_function, int p_idx, List<String> *r_options) const override;
@ -283,6 +300,7 @@ public:
 	static Input *get_singleton();
 	bool is_anything_pressed() const;
 	bool is_anything_pressed_except_mouse() const;
 	bool is_key_pressed(Key p_keycode) const;
 	bool is_physical_key_pressed(Key p_keycode) const;
 	bool is_key_label_pressed(Key p_keycode) const;
@ -376,6 +394,9 @@ public:
 	void set_event_dispatch_function(EventDispatchFunc p_function);
 	void set_disable_input(bool p_disable);
 	bool is_input_disabled() const;
 	Input();
 	~Input();
 };
--- a/engine/core/input/input_builders.py
+++ b/engine/core/input/input_builders.py
@ -33,7 +33,7 @@ def make_default_controller_mappings(target, source, env):
                    guid = line_parts[0]
                    if guid in platform_mappings[current_platform]:
                        g.write(
-                            "// WARNING - DATABASE {} OVERWROTE PRIOR MAPPING: {} {}\n".format(
+                            "// WARNING: DATABASE {} OVERWROTE PRIOR MAPPING: {} {}\n".format(
                                src_path, current_platform, platform_mappings[current_platform][guid]
                            )
                        )
--- a/engine/core/input/input_enums.h
+++ b/engine/core/input/input_enums.h
@ -31,6 +31,8 @@
 #ifndef INPUT_ENUMS_H
 #define INPUT_ENUMS_H
 #include "core/error/error_macros.h"
 enum class HatDir {
 	UP = 0,
 	RIGHT = 1,
@ -131,6 +133,8 @@ enum class MouseButtonMask {
 };
 inline MouseButtonMask mouse_button_to_mask(MouseButton button) {
 	ERR_FAIL_COND_V(button == MouseButton::NONE, MouseButtonMask::NONE);
 	return MouseButtonMask(1 << ((int)button - 1));
 }
--- a/engine/core/input/input_event.cpp
+++ b/engine/core/input/input_event.cpp
@ -754,6 +754,8 @@ Ref<InputEvent> InputEventMouseButton::xformed_by(const Transform2D &p_xform, co
 	mb->set_factor(factor);
 	mb->set_button_index(button_index);
 	mb->merge_meta_from(this);
 	return mb;
 }
@ -974,6 +976,8 @@ Ref<InputEvent> InputEventMouseMotion::xformed_by(const Transform2D &p_xform, co
 	mm->set_velocity(p_xform.basis_xform(get_velocity()));
 	mm->set_screen_velocity(get_screen_velocity());
 	mm->merge_meta_from(this);
 	return mm;
 }
@ -1088,7 +1092,7 @@ void InputEventMouseMotion::_bind_methods() {
 ///////////////////////////////////
 void InputEventJoypadMotion::set_axis(JoyAxis p_axis) {
-	ERR_FAIL_COND(p_axis < JoyAxis::LEFT_X || p_axis > JoyAxis::MAX);
+	ERR_FAIL_COND(p_axis < JoyAxis::INVALID || p_axis > JoyAxis::MAX);
 	axis = p_axis;
 	emit_changed();
@ -1100,7 +1104,7 @@ JoyAxis InputEventJoypadMotion::get_axis() const {
 void InputEventJoypadMotion::set_axis_value(float p_value) {
 	axis_value = p_value;
-	pressed = Math::abs(axis_value) >= 0.5f;
+	pressed = Math::abs(axis_value) >= InputMap::DEFAULT_DEADZONE;
 	emit_changed();
 }
@ -1366,6 +1370,8 @@ Ref<InputEvent> InputEventScreenTouch::xformed_by(const Transform2D &p_xform, co
 	st->set_canceled(canceled);
 	st->set_double_tap(double_tap);
 	st->merge_meta_from(this);
 	return st;
 }
@ -1494,6 +1500,8 @@ Ref<InputEvent> InputEventScreenDrag::xformed_by(const Transform2D &p_xform, con
 	sd->set_velocity(p_xform.basis_xform(velocity));
 	sd->set_screen_velocity(get_screen_velocity());
 	sd->merge_meta_from(this);
 	return sd;
 }
@ -1705,6 +1713,8 @@ Ref<InputEvent> InputEventMagnifyGesture::xformed_by(const Transform2D &p_xform,
 	ev->set_position(p_xform.xform(get_position() + p_local_ofs));
 	ev->set_factor(get_factor());
 	ev->merge_meta_from(this);
 	return ev;
 }
@ -1745,6 +1755,8 @@ Ref<InputEvent> InputEventPanGesture::xformed_by(const Transform2D &p_xform, con
 	ev->set_position(p_xform.xform(get_position() + p_local_ofs));
 	ev->set_delta(get_delta());
 	ev->merge_meta_from(this);
 	return ev;
 }
--- a/engine/core/input/input_map.compat.inc
+++ b/engine/core/input/input_map.compat.inc
@ -0,0 +1,41 @@
 /**************************************************************************/
 /*  input_map.compat.inc                                                  */
 /**************************************************************************/
 /*                         This file is part of:                          */
 /*                             GODOT ENGINE                               */
 /*                        https://godotengine.org                         */
 /**************************************************************************/
 /* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
 /* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
 /*                                                                        */
 /* Permission is hereby granted, free of charge, to any person obtaining  */
 /* a copy of this software and associated documentation files (the        */
 /* "Software"), to deal in the Software without restriction, including    */
 /* without limitation the rights to use, copy, modify, merge, publish,    */
 /* distribute, sublicense, and/or sell copies of the Software, and to     */
 /* permit persons to whom the Software is furnished to do so, subject to  */
 /* the following conditions:                                              */
 /*                                                                        */
 /* The above copyright notice and this permission notice shall be         */
 /* included in all copies or substantial portions of the Software.        */
 /*                                                                        */
 /* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
 /* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
 /* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
 /* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
 /* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
 /* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
 /**************************************************************************/
 #ifndef DISABLE_DEPRECATED
 void InputMap::_add_action_bind_compat_97281(const StringName &p_action, float p_deadzone) {
 	add_action(p_action, p_deadzone);
 }
 void InputMap::_bind_compatibility_methods() {
 	ClassDB::bind_compatibility_method(D_METHOD("add_action", "action", "deadzone"), &InputMap::_add_action_bind_compat_97281, DEFVAL(0.5f));
 }
 #endif // DISABLE_DEPRECATED
--- a/engine/core/input/input_map.cpp
+++ b/engine/core/input/input_map.cpp
@ -29,6 +29,7 @@
 /**************************************************************************/
 #include "input_map.h"
 #include "input_map.compat.inc"
 #include "core/config/project_settings.h"
 #include "core/input/input.h"
@ -43,7 +44,7 @@ int InputMap::ALL_DEVICES = -1;
 void InputMap::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("has_action", "action"), &InputMap::has_action);
 	ClassDB::bind_method(D_METHOD("get_actions"), &InputMap::_get_actions);
-	ClassDB::bind_method(D_METHOD("add_action", "action", "deadzone"), &InputMap::add_action, DEFVAL(0.5f));
+	ClassDB::bind_method(D_METHOD("add_action", "action", "deadzone"), &InputMap::add_action, DEFVAL(DEFAULT_DEADZONE));
 	ClassDB::bind_method(D_METHOD("erase_action", "action"), &InputMap::erase_action);
 	ClassDB::bind_method(D_METHOD("action_set_deadzone", "action", "deadzone"), &InputMap::action_set_deadzone);
@ -105,7 +106,7 @@ void InputMap::get_argument_options(const StringName &p_function, int p_idx, Lis
 				continue;
 			}
-			String name = pi.name.substr(pi.name.find("/") + 1, pi.name.length());
+			String name = pi.name.substr(pi.name.find_char('/') + 1, pi.name.length());
 			r_options->push_back(name.quote());
 		}
 	}
@ -115,7 +116,7 @@ void InputMap::get_argument_options(const StringName &p_function, int p_idx, Lis
 #endif
 void InputMap::add_action(const StringName &p_action, float p_deadzone) {
-	ERR_FAIL_COND_MSG(input_map.has(p_action), "InputMap already has action \"" + String(p_action) + "\".");
+	ERR_FAIL_COND_MSG(input_map.has(p_action), vformat("InputMap already has action \"%s\".", String(p_action)));
 	input_map[p_action] = Action();
 	static int last_id = 1;
 	input_map[p_action].id = last_id;
@ -157,7 +158,7 @@ List<StringName> InputMap::get_actions() const {
 }
 List<Ref<InputEvent>>::Element *InputMap::_find_event(Action &p_action, const Ref<InputEvent> &p_event, bool p_exact_match, bool *r_pressed, float *r_strength, float *r_raw_strength, int *r_event_index) const {
-	ERR_FAIL_COND_V(!p_event.is_valid(), nullptr);
+	ERR_FAIL_COND_V(p_event.is_null(), nullptr);
 	int i = 0;
 	for (List<Ref<InputEvent>>::Element *E = p_action.inputs.front(); E; E = E->next()) {
@ -253,8 +254,8 @@ bool InputMap::event_is_action(const Ref<InputEvent> &p_event, const StringName
 int InputMap::event_get_index(const Ref<InputEvent> &p_event, const StringName &p_action, bool p_exact_match) const {
 	int index = -1;
-	event_get_action_status(p_event, p_action, p_exact_match, nullptr, nullptr, nullptr, &index);
+	bool valid = event_get_action_status(p_event, p_action, p_exact_match, nullptr, nullptr, nullptr, &index);
-	return index;
+	return valid ? index : -1;
 }
 bool InputMap::event_get_action_status(const Ref<InputEvent> &p_event, const StringName &p_action, bool p_exact_match, bool *r_pressed, float *r_strength, float *r_raw_strength, int *r_event_index) const {
@ -303,10 +304,10 @@ void InputMap::load_from_project_settings() {
 			continue;
 		}
-		String name = pi.name.substr(pi.name.find("/") + 1, pi.name.length());
+		String name = pi.name.substr(pi.name.find_char('/') + 1, pi.name.length());
 		Dictionary action = GLOBAL_GET(pi.name);
-		float deadzone = action.has("deadzone") ? (float)action["deadzone"] : 0.5f;
+		float deadzone = action.has("deadzone") ? (float)action["deadzone"] : DEFAULT_DEADZONE;
 		Array events = action["events"];
 		add_action(name, deadzone);
@ -400,6 +401,7 @@ static const _BuiltinActionDisplayName _builtin_action_display_names[] = {
    { "ui_filedialog_refresh",                         TTRC("Refresh") },
    { "ui_filedialog_show_hidden",                     TTRC("Show Hidden") },
    { "ui_swap_input_direction ",                      TTRC("Swap Input Direction") },
    { "ui_unicode_start",                              TTRC("Start Unicode Character Input") },
    { "",                                              ""}
 	/* clang-format on */
 };
@ -517,12 +519,15 @@ const HashMap<String, List<Ref<InputEvent>>> &InputMap::get_builtins() {
 	default_builtin_cache.insert("ui_text_completion_query", inputs);
 	inputs = List<Ref<InputEvent>>();
-	inputs.push_back(InputEventKey::create_reference(Key::ENTER));
+	inputs.push_back(InputEventKey::create_reference(KeyModifierMask::SHIFT | Key::TAB));
-	inputs.push_back(InputEventKey::create_reference(Key::KP_ENTER));
+	inputs.push_back(InputEventKey::create_reference(KeyModifierMask::SHIFT | Key::ENTER));
 	inputs.push_back(InputEventKey::create_reference(KeyModifierMask::SHIFT | Key::KP_ENTER));
 	default_builtin_cache.insert("ui_text_completion_accept", inputs);
 	inputs = List<Ref<InputEvent>>();
 	inputs.push_back(InputEventKey::create_reference(Key::TAB));
 	inputs.push_back(InputEventKey::create_reference(Key::ENTER));
 	inputs.push_back(InputEventKey::create_reference(Key::KP_ENTER));
 	default_builtin_cache.insert("ui_text_completion_replace", inputs);
 	// Newlines
@ -532,7 +537,6 @@ const HashMap<String, List<Ref<InputEvent>>> &InputMap::get_builtins() {
 	default_builtin_cache.insert("ui_text_newline", inputs);
 	inputs = List<Ref<InputEvent>>();
 	inputs.push_back(InputEventKey::create_reference(Key::ENTER | KeyModifierMask::CMD_OR_CTRL));
 	inputs.push_back(InputEventKey::create_reference(Key::KP_ENTER | KeyModifierMask::CMD_OR_CTRL));
 	default_builtin_cache.insert("ui_text_newline_blank", inputs);
@ -754,6 +758,10 @@ const HashMap<String, List<Ref<InputEvent>>> &InputMap::get_builtins() {
 	inputs.push_back(InputEventKey::create_reference(Key::KP_ENTER));
 	default_builtin_cache.insert("ui_text_submit", inputs);
 	inputs = List<Ref<InputEvent>>();
 	inputs.push_back(InputEventKey::create_reference(Key::U | KeyModifierMask::CTRL | KeyModifierMask::SHIFT));
 	default_builtin_cache.insert("ui_unicode_start", inputs);
 	// ///// UI Graph Shortcuts /////
 	inputs = List<Ref<InputEvent>>();
--- a/engine/core/input/input_map.h
+++ b/engine/core/input/input_map.h
@ -54,6 +54,8 @@ public:
 		List<Ref<InputEvent>> inputs;
 	};
 	static constexpr float DEFAULT_DEADZONE = 0.2f;
 private:
 	static InputMap *singleton;
@ -69,12 +71,17 @@ private:
 protected:
 	static void _bind_methods();
 #ifndef DISABLE_DEPRECATED
 	void _add_action_bind_compat_97281(const StringName &p_action, float p_deadzone = 0.5);
 	static void _bind_compatibility_methods();
 #endif // DISABLE_DEPRECATED
 public:
 	static _FORCE_INLINE_ InputMap *get_singleton() { return singleton; }
 	bool has_action(const StringName &p_action) const;
 	List<StringName> get_actions() const;
-	void add_action(const StringName &p_action, float p_deadzone = 0.5);
+	void add_action(const StringName &p_action, float p_deadzone = DEFAULT_DEADZONE);
 	void erase_action(const StringName &p_action);
 	float action_get_deadzone(const StringName &p_action);
--- a/engine/core/input/shortcut.cpp
+++ b/engine/core/input/shortcut.cpp
@ -29,7 +29,6 @@
 /**************************************************************************/
 #include "shortcut.h"
 #include "core/os/keyboard.h"
 void Shortcut::set_events(const Array &p_events) {
 	for (int i = 0; i < p_events.size(); i++) {
--- a/engine/core/io/SCsub
+++ b/engine/core/io/SCsub
@ -1,4 +1,5 @@
 #!/usr/bin/env python
 from misc.utility.scons_hints import *
 Import("env")
--- a/engine/core/io/compression.h
+++ b/engine/core/io/compression.h
@ -43,7 +43,7 @@ public:
 	static int zstd_window_log_size;
 	static int gzip_chunk;
-	enum Mode {
+	enum Mode : int32_t {
 		MODE_FASTLZ,
 		MODE_DEFLATE,
 		MODE_ZSTD,
--- a/engine/core/io/config_file.cpp
+++ b/engine/core/io/config_file.cpp
@ -31,7 +31,6 @@
 #include "config_file.h"
 #include "core/io/file_access_encrypted.h"
 #include "core/os/keyboard.h"
 #include "core/string/string_builder.h"
 #include "core/variant/variant_parser.h"
--- a/engine/core/io/dir_access.cpp
+++ b/engine/core/io/dir_access.cpp
@ -32,8 +32,8 @@
 #include "core/config/project_settings.h"
 #include "core/io/file_access.h"
 #include "core/os/memory.h"
 #include "core/os/os.h"
 #include "core/os/time.h"
 #include "core/templates/local_vector.h"
 thread_local Error DirAccess::last_dir_open_error = OK;
@ -155,9 +155,9 @@ Error DirAccess::make_dir_recursive(const String &p_dir) {
 	} else if (full_dir.begins_with("user://")) {
 		base = "user://";
 	} else if (full_dir.is_network_share_path()) {
-		int pos = full_dir.find("/", 2);
+		int pos = full_dir.find_char('/', 2);
 		ERR_FAIL_COND_V(pos < 0, ERR_INVALID_PARAMETER);
-		pos = full_dir.find("/", pos + 1);
+		pos = full_dir.find_char('/', pos + 1);
 		ERR_FAIL_COND_V(pos < 0, ERR_INVALID_PARAMETER);
 		base = full_dir.substr(0, pos + 1);
 	} else if (full_dir.begins_with("/")) {
@ -177,7 +177,7 @@ Error DirAccess::make_dir_recursive(const String &p_dir) {
 		curpath = curpath.path_join(subdirs[i]);
 		Error err = make_dir(curpath);
 		if (err != OK && err != ERR_ALREADY_EXISTS) {
-			ERR_FAIL_V_MSG(err, "Could not create directory: " + curpath);
+			ERR_FAIL_V_MSG(err, vformat("Could not create directory: '%s'.", curpath));
 		}
 	}
@ -239,7 +239,7 @@ Ref<DirAccess> DirAccess::create_for_path(const String &p_path) {
 Ref<DirAccess> DirAccess::open(const String &p_path, Error *r_error) {
 	Ref<DirAccess> da = create_for_path(p_path);
-	ERR_FAIL_COND_V_MSG(da.is_null(), nullptr, "Cannot create DirAccess for path '" + p_path + "'.");
+	ERR_FAIL_COND_V_MSG(da.is_null(), nullptr, vformat("Cannot create DirAccess for path '%s'.", p_path));
 	Error err = da->change_dir(p_path);
 	if (r_error) {
 		*r_error = err;
@ -323,6 +323,80 @@ Ref<DirAccess> DirAccess::create(AccessType p_access) {
 	return da;
 }
 Ref<DirAccess> DirAccess::create_temp(const String &p_prefix, bool p_keep, Error *r_error) {
 	const String ERROR_COMMON_PREFIX = "Error while creating temporary directory";
 	if (!p_prefix.is_valid_filename()) {
 		*r_error = ERR_FILE_BAD_PATH;
 		ERR_FAIL_V_MSG(Ref<FileAccess>(), vformat(R"(%s: "%s" is not a valid prefix.)", ERROR_COMMON_PREFIX, p_prefix));
 	}
 	Ref<DirAccess> dir_access = DirAccess::open(OS::get_singleton()->get_temp_path());
 	uint32_t suffix_i = 0;
 	String path;
 	while (true) {
 		String datetime = Time::get_singleton()->get_datetime_string_from_system().replace("-", "").replace("T", "").replace(":", "");
 		datetime += itos(Time::get_singleton()->get_ticks_usec());
 		String suffix = datetime + (suffix_i > 0 ? itos(suffix_i) : "");
 		path = (p_prefix.is_empty() ? "" : p_prefix + "-") + suffix;
 		if (!path.is_valid_filename()) {
 			*r_error = ERR_FILE_BAD_PATH;
 			return Ref<DirAccess>();
 		}
 		if (!DirAccess::exists(path)) {
 			break;
 		}
 		suffix_i += 1;
 	}
 	Error err = dir_access->make_dir(path);
 	if (err != OK) {
 		*r_error = err;
 		ERR_FAIL_V_MSG(Ref<FileAccess>(), vformat(R"(%s: "%s" couldn't create directory "%s".)", ERROR_COMMON_PREFIX, path));
 	}
 	err = dir_access->change_dir(path);
 	if (err != OK) {
 		*r_error = err;
 		return Ref<DirAccess>();
 	}
 	dir_access->_is_temp = true;
 	dir_access->_temp_keep_after_free = p_keep;
 	dir_access->_temp_path = dir_access->get_current_dir();
 	*r_error = OK;
 	return dir_access;
 }
 Ref<DirAccess> DirAccess::_create_temp(const String &p_prefix, bool p_keep) {
 	return create_temp(p_prefix, p_keep, &last_dir_open_error);
 }
 void DirAccess::_delete_temp() {
 	if (!_is_temp || _temp_keep_after_free) {
 		return;
 	}
 	if (!DirAccess::exists(_temp_path)) {
 		return;
 	}
 	Error err;
 	{
 		Ref<DirAccess> dir_access = DirAccess::open(_temp_path, &err);
 		if (err != OK) {
 			return;
 		}
 		err = dir_access->erase_contents_recursive();
 		if (err != OK) {
 			return;
 		}
 	}
 	DirAccess::remove_absolute(_temp_path);
 }
 Error DirAccess::get_open_error() {
 	return last_dir_open_error;
 }
@ -345,10 +419,10 @@ Error DirAccess::copy(const String &p_from, const String &p_to, int p_chmod_flag
 	Error err;
 	{
 		Ref<FileAccess> fsrc = FileAccess::open(p_from, FileAccess::READ, &err);
-		ERR_FAIL_COND_V_MSG(err != OK, err, "Failed to open " + p_from);
+		ERR_FAIL_COND_V_MSG(err != OK, err, vformat("Failed to open '%s'.", p_from));
 		Ref<FileAccess> fdst = FileAccess::open(p_to, FileAccess::WRITE, &err);
-		ERR_FAIL_COND_V_MSG(err != OK, err, "Failed to open " + p_to);
+		ERR_FAIL_COND_V_MSG(err != OK, err, vformat("Failed to open '%s'.", p_to));
 		const size_t copy_buffer_limit = 65536; // 64 KB
@ -444,11 +518,11 @@ Error DirAccess::_copy_dir(Ref<DirAccess> &p_target_da, const String &p_to, int
 		String target_dir = p_to + rel_path;
 		if (!p_target_da->dir_exists(target_dir)) {
 			Error err = p_target_da->make_dir(target_dir);
-			ERR_FAIL_COND_V_MSG(err != OK, err, "Cannot create directory '" + target_dir + "'.");
+			ERR_FAIL_COND_V_MSG(err != OK, err, vformat("Cannot create directory '%s'.", target_dir));
 		}
 		Error err = change_dir(rel_path);
-		ERR_FAIL_COND_V_MSG(err != OK, err, "Cannot change current directory to '" + rel_path + "'.");
+		ERR_FAIL_COND_V_MSG(err != OK, err, vformat("Cannot change current directory to '%s'.", rel_path));
 		err = _copy_dir(p_target_da, p_to + rel_path + "/", p_chmod_flags, p_copy_links);
 		if (err) {
@ -466,11 +540,11 @@ Error DirAccess::copy_dir(const String &p_from, String p_to, int p_chmod_flags,
 	ERR_FAIL_COND_V_MSG(!dir_exists(p_from), ERR_FILE_NOT_FOUND, "Source directory doesn't exist.");
 	Ref<DirAccess> target_da = DirAccess::create_for_path(p_to);
-	ERR_FAIL_COND_V_MSG(target_da.is_null(), ERR_CANT_CREATE, "Cannot create DirAccess for path '" + p_to + "'.");
+	ERR_FAIL_COND_V_MSG(target_da.is_null(), ERR_CANT_CREATE, vformat("Cannot create DirAccess for path '%s'.", p_to));
 	if (!target_da->dir_exists(p_to)) {
 		Error err = target_da->make_dir_recursive(p_to);
-		ERR_FAIL_COND_V_MSG(err != OK, err, "Cannot create directory '" + p_to + "'.");
+		ERR_FAIL_COND_V_MSG(err != OK, err, vformat("Cannot create directory '%s'.", p_to));
 	}
 	if (!p_to.ends_with("/")) {
@ -555,8 +629,9 @@ bool DirAccess::is_case_sensitive(const String &p_path) const {
 void DirAccess::_bind_methods() {
 	ClassDB::bind_static_method("DirAccess", D_METHOD("open", "path"), &DirAccess::_open);
 	ClassDB::bind_static_method("DirAccess", D_METHOD("get_open_error"), &DirAccess::get_open_error);
 	ClassDB::bind_static_method("DirAccess", D_METHOD("create_temp", "prefix", "keep"), &DirAccess::_create_temp, DEFVAL(""), DEFVAL(false));
-	ClassDB::bind_method(D_METHOD("list_dir_begin"), &DirAccess::list_dir_begin, DEFVAL(false), DEFVAL(false));
+	ClassDB::bind_method(D_METHOD("list_dir_begin"), &DirAccess::list_dir_begin);
 	ClassDB::bind_method(D_METHOD("get_next"), &DirAccess::_get_next);
 	ClassDB::bind_method(D_METHOD("current_is_dir"), &DirAccess::current_is_dir);
 	ClassDB::bind_method(D_METHOD("list_dir_end"), &DirAccess::list_dir_end);
@ -588,6 +663,8 @@ void DirAccess::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("read_link", "path"), &DirAccess::read_link);
 	ClassDB::bind_method(D_METHOD("create_link", "source", "target"), &DirAccess::create_link);
 	ClassDB::bind_method(D_METHOD("is_bundle", "path"), &DirAccess::is_bundle);
 	ClassDB::bind_method(D_METHOD("set_include_navigational", "enable"), &DirAccess::set_include_navigational);
 	ClassDB::bind_method(D_METHOD("get_include_navigational"), &DirAccess::get_include_navigational);
 	ClassDB::bind_method(D_METHOD("set_include_hidden", "enable"), &DirAccess::set_include_hidden);
@ -598,3 +675,7 @@ void DirAccess::_bind_methods() {
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "include_navigational"), "set_include_navigational", "get_include_navigational");
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "include_hidden"), "set_include_hidden", "get_include_hidden");
 }
 DirAccess::~DirAccess() {
 	_delete_temp();
 }
--- a/engine/core/io/dir_access.h
+++ b/engine/core/io/dir_access.h
@ -40,7 +40,7 @@ class DirAccess : public RefCounted {
 	GDCLASS(DirAccess, RefCounted);
 public:
-	enum AccessType {
+	enum AccessType : int32_t {
 		ACCESS_RESOURCES,
 		ACCESS_USERDATA,
 		ACCESS_FILESYSTEM,
@ -61,6 +61,13 @@ private:
 	bool include_navigational = false;
 	bool include_hidden = false;
 	bool _is_temp = false;
 	bool _temp_keep_after_free = false;
 	String _temp_path;
 	void _delete_temp();
 	static Ref<DirAccess> _create_temp(const String &p_prefix = "", bool p_keep = false);
 protected:
 	static void _bind_methods();
@ -96,8 +103,8 @@ public:
 	virtual bool file_exists(String p_file) = 0;
 	virtual bool dir_exists(String p_dir) = 0;
-	virtual bool is_readable(String p_dir) { return true; };
+	virtual bool is_readable(String p_dir) { return true; }
-	virtual bool is_writable(String p_dir) { return true; };
+	virtual bool is_writable(String p_dir) { return true; }
 	static bool exists(const String &p_dir);
 	virtual uint64_t get_space_left() = 0;
@ -116,10 +123,10 @@ public:
 		Ref<DirAccess> da = create(ACCESS_FILESYSTEM);
 		if (da->file_exists(p_path)) {
 			if (da->remove(p_path) != OK) {
-				ERR_FAIL_MSG("Cannot remove file or directory: " + p_path);
+				ERR_FAIL_MSG(vformat("Cannot remove file or directory: '%s'.", p_path));
 			}
 		} else {
-			ERR_FAIL_MSG("Cannot remove non-existent file or directory: " + p_path);
+			ERR_FAIL_MSG(vformat("Cannot remove non-existent file or directory: '%s'.", p_path));
 		}
 	}
@ -136,6 +143,7 @@ public:
 	}
 	static Ref<DirAccess> open(const String &p_path, Error *r_error = nullptr);
 	static Ref<DirAccess> create_temp(const String &p_prefix = "", bool p_keep = false, Error *r_error = nullptr);
 	static int _get_drive_count();
 	static String get_drive_name(int p_idx);
@ -160,9 +168,11 @@ public:
 	bool get_include_hidden() const;
 	virtual bool is_case_sensitive(const String &p_path) const;
 	virtual bool is_bundle(const String &p_file) const { return false; }
 public:
 	DirAccess() {}
-	virtual ~DirAccess() {}
+	virtual ~DirAccess();
 };
 #endif // DIR_ACCESS_H
--- a/engine/core/io/dtls_server.cpp
+++ b/engine/core/io/dtls_server.cpp
@ -30,15 +30,12 @@
 #include "dtls_server.h"
-#include "core/config/project_settings.h"
+DTLSServer *(*DTLSServer::_create)(bool p_notify_postinitialize) = nullptr;
 #include "core/io/file_access.h"
 DTLSServer *(*DTLSServer::_create)() = nullptr;
 bool DTLSServer::available = false;
-DTLSServer *DTLSServer::create() {
+DTLSServer *DTLSServer::create(bool p_notify_postinitialize) {
 	if (_create) {
-		return _create();
+		return _create(p_notify_postinitialize);
 	}
 	return nullptr;
 }
--- a/engine/core/io/dtls_server.h
+++ b/engine/core/io/dtls_server.h
@ -38,14 +38,14 @@ class DTLSServer : public RefCounted {
 	GDCLASS(DTLSServer, RefCounted);
 protected:
-	static DTLSServer *(*_create)();
+	static DTLSServer *(*_create)(bool p_notify_postinitialize);
 	static void _bind_methods();
 	static bool available;
 public:
 	static bool is_available();
-	static DTLSServer *create();
+	static DTLSServer *create(bool p_notify_postinitialize = true);
 	virtual Error setup(Ref<TLSOptions> p_options) = 0;
 	virtual void stop() = 0;
--- a/engine/core/io/file_access.compat.inc
+++ b/engine/core/io/file_access.compat.inc
@ -0,0 +1,112 @@
 /**************************************************************************/
 /*  file_access.compat.inc                                                */
 /**************************************************************************/
 /*                         This file is part of:                          */
 /*                             GODOT ENGINE                               */
 /*                        https://godotengine.org                         */
 /**************************************************************************/
 /* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
 /* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
 /*                                                                        */
 /* Permission is hereby granted, free of charge, to any person obtaining  */
 /* a copy of this software and associated documentation files (the        */
 /* "Software"), to deal in the Software without restriction, including    */
 /* without limitation the rights to use, copy, modify, merge, publish,    */
 /* distribute, sublicense, and/or sell copies of the Software, and to     */
 /* permit persons to whom the Software is furnished to do so, subject to  */
 /* the following conditions:                                              */
 /*                                                                        */
 /* The above copyright notice and this permission notice shall be         */
 /* included in all copies or substantial portions of the Software.        */
 /*                                                                        */
 /* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
 /* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
 /* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
 /* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
 /* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
 /* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
 /**************************************************************************/
 #ifndef DISABLE_DEPRECATED
 Ref<FileAccess> FileAccess::_open_encrypted_bind_compat_98918(const String &p_path, ModeFlags p_mode_flags, const Vector<uint8_t> &p_key) {
 	return open_encrypted(p_path, p_mode_flags, p_key, Vector<uint8_t>());
 }
 void FileAccess::store_8_bind_compat_78289(uint8_t p_dest) {
 	store_8(p_dest);
 }
 void FileAccess::store_16_bind_compat_78289(uint16_t p_dest) {
 	store_16(p_dest);
 }
 void FileAccess::store_32_bind_compat_78289(uint32_t p_dest) {
 	store_32(p_dest);
 }
 void FileAccess::store_64_bind_compat_78289(uint64_t p_dest) {
 	store_64(p_dest);
 }
 void FileAccess::store_buffer_bind_compat_78289(const Vector<uint8_t> &p_buffer) {
 	store_buffer(p_buffer);
 }
 void FileAccess::store_var_bind_compat_78289(const Variant &p_var, bool p_full_objects) {
 	store_var(p_var, p_full_objects);
 }
 void FileAccess::store_half_bind_compat_78289(float p_dest) {
 	store_half(p_dest);
 }
 void FileAccess::store_float_bind_compat_78289(float p_dest) {
 	store_float(p_dest);
 }
 void FileAccess::store_double_bind_compat_78289(double p_dest) {
 	store_double(p_dest);
 }
 void FileAccess::store_real_bind_compat_78289(real_t p_real) {
 	store_real(p_real);
 }
 void FileAccess::store_string_bind_compat_78289(const String &p_string) {
 	store_string(p_string);
 }
 void FileAccess::store_line_bind_compat_78289(const String &p_line) {
 	store_line(p_line);
 }
 void FileAccess::store_csv_line_bind_compat_78289(const Vector<String> &p_values, const String &p_delim) {
 	store_csv_line(p_values, p_delim);
 }
 void FileAccess::store_pascal_string_bind_compat_78289(const String &p_string) {
 	store_pascal_string(p_string);
 }
 void FileAccess::_bind_compatibility_methods() {
 	ClassDB::bind_compatibility_static_method("FileAccess", D_METHOD("open_encrypted", "path", "mode_flags", "key"), &FileAccess::_open_encrypted_bind_compat_98918);
 	ClassDB::bind_compatibility_method(D_METHOD("store_8", "value"), &FileAccess::store_8_bind_compat_78289);
 	ClassDB::bind_compatibility_method(D_METHOD("store_16", "value"), &FileAccess::store_16_bind_compat_78289);
 	ClassDB::bind_compatibility_method(D_METHOD("store_32", "value"), &FileAccess::store_32_bind_compat_78289);
 	ClassDB::bind_compatibility_method(D_METHOD("store_64", "value"), &FileAccess::store_64_bind_compat_78289);
 	ClassDB::bind_compatibility_method(D_METHOD("store_half", "value"), &FileAccess::store_half_bind_compat_78289);
 	ClassDB::bind_compatibility_method(D_METHOD("store_float", "value"), &FileAccess::store_float_bind_compat_78289);
 	ClassDB::bind_compatibility_method(D_METHOD("store_double", "value"), &FileAccess::store_double_bind_compat_78289);
 	ClassDB::bind_compatibility_method(D_METHOD("store_real", "value"), &FileAccess::store_real_bind_compat_78289);
 	ClassDB::bind_compatibility_method(D_METHOD("store_buffer", "buffer"), &FileAccess::store_buffer_bind_compat_78289);
 	ClassDB::bind_compatibility_method(D_METHOD("store_line", "line"), &FileAccess::store_line_bind_compat_78289);
 	ClassDB::bind_compatibility_method(D_METHOD("store_csv_line", "values", "delim"), &FileAccess::store_csv_line_bind_compat_78289, DEFVAL(","));
 	ClassDB::bind_compatibility_method(D_METHOD("store_string", "string"), &FileAccess::store_string_bind_compat_78289);
 	ClassDB::bind_compatibility_method(D_METHOD("store_var", "value", "full_objects"), &FileAccess::store_var_bind_compat_78289, DEFVAL(false));
 	ClassDB::bind_compatibility_method(D_METHOD("store_pascal_string", "string"), &FileAccess::store_pascal_string_bind_compat_78289);
 }
 #endif
--- a/engine/core/io/file_access.cpp
+++ b/engine/core/io/file_access.cpp
@ -29,6 +29,7 @@
 /**************************************************************************/
 #include "file_access.h"
 #include "file_access.compat.inc"
 #include "core/config/project_settings.h"
 #include "core/crypto/crypto_core.h"
@ -37,6 +38,7 @@
 #include "core/io/file_access_pack.h"
 #include "core/io/marshalls.h"
 #include "core/os/os.h"
 #include "core/os/time.h"
 FileAccess::CreateFunc FileAccess::create_func[ACCESS_MAX] = {};
@ -59,11 +61,9 @@ bool FileAccess::exists(const String &p_name) {
 		return true;
 	}
-	Ref<FileAccess> f = open(p_name, READ);
+	// Using file_exists because it's faster than trying to open the file.
-	if (f.is_null()) {
+	Ref<FileAccess> ret = create_for_path(p_name);
-		return false;
+	return ret->file_exists(p_name);
 	}
 	return true;
 }
 void FileAccess::_set_access_type(AccessType p_access) {
@ -72,7 +72,7 @@ void FileAccess::_set_access_type(AccessType p_access) {
 Ref<FileAccess> FileAccess::create_for_path(const String &p_path) {
 	Ref<FileAccess> ret;
-	if (p_path.begins_with("res://")) {
+	if (p_path.begins_with("res://") || p_path.begins_with("uid://")) {
 		ret = create(ACCESS_RESOURCES);
 	} else if (p_path.begins_with("user://")) {
 		ret = create(ACCESS_USERDATA);
@ -85,6 +85,79 @@ Ref<FileAccess> FileAccess::create_for_path(const String &p_path) {
 	return ret;
 }
 Ref<FileAccess> FileAccess::create_temp(int p_mode_flags, const String &p_prefix, const String &p_extension, bool p_keep, Error *r_error) {
 	const String ERROR_COMMON_PREFIX = "Error while creating temporary file";
 	if (!p_prefix.is_valid_filename()) {
 		*r_error = ERR_FILE_BAD_PATH;
 		ERR_FAIL_V_MSG(Ref<FileAccess>(), vformat(R"(%s: "%s" is not a valid prefix.)", ERROR_COMMON_PREFIX, p_prefix));
 	}
 	if (!p_extension.is_valid_filename()) {
 		*r_error = ERR_FILE_BAD_PATH;
 		ERR_FAIL_V_MSG(Ref<FileAccess>(), vformat(R"(%s: "%s" is not a valid extension.)", ERROR_COMMON_PREFIX, p_extension));
 	}
 	const String TEMP_DIR = OS::get_singleton()->get_temp_path();
 	String extension = p_extension.trim_prefix(".");
 	uint32_t suffix_i = 0;
 	String path;
 	while (true) {
 		String datetime = Time::get_singleton()->get_datetime_string_from_system().replace("-", "").replace("T", "").replace(":", "");
 		datetime += itos(Time::get_singleton()->get_ticks_usec());
 		String suffix = datetime + (suffix_i > 0 ? itos(suffix_i) : "");
 		path = TEMP_DIR.path_join((p_prefix.is_empty() ? "" : p_prefix + "-") + suffix + (extension.is_empty() ? "" : "." + extension));
 		if (!DirAccess::exists(path)) {
 			break;
 		}
 		suffix_i += 1;
 	}
 	Error err;
 	{
 		// Create file first with WRITE mode.
 		// Otherwise, it would fail to open with a READ mode.
 		Ref<FileAccess> ret = FileAccess::open(path, FileAccess::ModeFlags::WRITE, &err);
 		if (err != OK) {
 			*r_error = err;
 			ERR_FAIL_V_MSG(Ref<FileAccess>(), vformat(R"(%s: could not create "%s".)", ERROR_COMMON_PREFIX, path));
 		}
 		ret->flush();
 	}
 	// Open then the temp file with the correct mode flag.
 	Ref<FileAccess> ret = FileAccess::open(path, p_mode_flags, &err);
 	if (err != OK) {
 		*r_error = err;
 		ERR_FAIL_V_MSG(Ref<FileAccess>(), vformat(R"(%s: could not open "%s".)", ERROR_COMMON_PREFIX, path));
 	}
 	if (ret.is_valid()) {
 		ret->_is_temp_file = true;
 		ret->_temp_keep_after_use = p_keep;
 		ret->_temp_path = ret->get_path_absolute();
 	}
 	*r_error = OK;
 	return ret;
 }
 Ref<FileAccess> FileAccess::_create_temp(int p_mode_flags, const String &p_prefix, const String &p_extension, bool p_keep) {
 	return create_temp(p_mode_flags, p_prefix, p_extension, p_keep, &last_file_open_error);
 }
 void FileAccess::_delete_temp() {
 	if (!_is_temp_file || _temp_keep_after_use) {
 		return;
 	}
 	if (!FileAccess::exists(_temp_path)) {
 		return;
 	}
 	DirAccess::remove_absolute(_temp_path);
 }
 Error FileAccess::reopen(const String &p_path, int p_mode_flags) {
 	return open_internal(p_path, p_mode_flags);
 }
@ -126,7 +199,7 @@ Ref<FileAccess> FileAccess::_open(const String &p_path, ModeFlags p_mode_flags)
 	return fa;
 }
-Ref<FileAccess> FileAccess::open_encrypted(const String &p_path, ModeFlags p_mode_flags, const Vector<uint8_t> &p_key) {
+Ref<FileAccess> FileAccess::open_encrypted(const String &p_path, ModeFlags p_mode_flags, const Vector<uint8_t> &p_key, const Vector<uint8_t> &p_iv) {
 	Ref<FileAccess> fa = _open(p_path, p_mode_flags);
 	if (fa.is_null()) {
 		return fa;
@ -134,7 +207,7 @@ Ref<FileAccess> FileAccess::open_encrypted(const String &p_path, ModeFlags p_mod
 	Ref<FileAccessEncrypted> fae;
 	fae.instantiate();
-	Error err = fae->open_and_parse(fa, p_key, (p_mode_flags == WRITE) ? FileAccessEncrypted::MODE_WRITE_AES256 : FileAccessEncrypted::MODE_READ);
+	Error err = fae->open_and_parse(fa, p_key, (p_mode_flags == WRITE) ? FileAccessEncrypted::MODE_WRITE_AES256 : FileAccessEncrypted::MODE_READ, true, p_iv);
 	last_file_open_error = err;
 	if (err) {
 		return Ref<FileAccess>();
@ -184,13 +257,17 @@ FileAccess::AccessType FileAccess::get_access_type() const {
 }
 String FileAccess::fix_path(const String &p_path) const {
-	//helper used by file accesses that use a single filesystem
+	// Helper used by file accesses that use a single filesystem.
 	String r_path = p_path.replace("\\", "/");
 	switch (_access_type) {
 		case ACCESS_RESOURCES: {
 			if (ProjectSettings::get_singleton()) {
 				if (r_path.begins_with("uid://")) {
 					r_path = ResourceUID::uid_to_path(r_path);
 				}
 				if (r_path.begins_with("res://")) {
 					String resource_path = ProjectSettings::get_singleton()->get_resource_path();
 					if (!resource_path.is_empty()) {
@ -225,59 +302,48 @@ String FileAccess::fix_path(const String &p_path) const {
 }
 /* these are all implemented for ease of porting, then can later be optimized */
 uint8_t FileAccess::get_8() const {
 	uint8_t data = 0;
 	get_buffer(&data, sizeof(uint8_t));
 	return data;
 }
 uint16_t FileAccess::get_16() const {
-	uint16_t res;
+	uint16_t data = 0;
-	uint8_t a, b;
+	get_buffer(reinterpret_cast<uint8_t *>(&data), sizeof(uint16_t));
 	a = get_8();
 	b = get_8();
 	if (big_endian) {
-		SWAP(a, b);
+		data = BSWAP16(data);
 	}
-	res = b;
+	return data;
 	res <<= 8;
 	res |= a;
 	return res;
 }
 uint32_t FileAccess::get_32() const {
-	uint32_t res;
+	uint32_t data = 0;
-	uint16_t a, b;
+	get_buffer(reinterpret_cast<uint8_t *>(&data), sizeof(uint32_t));
 	a = get_16();
 	b = get_16();
 	if (big_endian) {
-		SWAP(a, b);
+		data = BSWAP32(data);
 	}
-	res = b;
+	return data;
 	res <<= 16;
 	res |= a;
 	return res;
 }
 uint64_t FileAccess::get_64() const {
-	uint64_t res;
+	uint64_t data = 0;
-	uint32_t a, b;
+	get_buffer(reinterpret_cast<uint8_t *>(&data), sizeof(uint64_t));
 	a = get_32();
 	b = get_32();
 	if (big_endian) {
-		SWAP(a, b);
+		data = BSWAP64(data);
 	}
-	res = b;
+	return data;
-	res <<= 32;
+}
 	res |= a;
-	return res;
+float FileAccess::get_half() const {
 	return Math::half_to_float(get_16());
 }
 float FileAccess::get_float() const {
@ -317,7 +383,7 @@ double FileAccess::get_double() const {
 String FileAccess::get_token() const {
 	CharString token;
-	char32_t c = get_8();
+	uint8_t c = get_8();
 	while (!eof_reached()) {
 		if (c <= ' ') {
@ -325,7 +391,7 @@ String FileAccess::get_token() const {
 				break;
 			}
 		} else {
-			token += c;
+			token += char(c);
 		}
 		c = get_8();
 	}
@ -382,14 +448,14 @@ public:
 String FileAccess::get_line() const {
 	CharBuffer line;
-	char32_t c = get_8();
+	uint8_t c = get_8();
 	while (!eof_reached()) {
-		if (c == '\n' || c == '\0') {
+		if (c == '\n' || c == '\0' || get_error() != OK) {
 			line.push_back(0);
 			return String::utf8(line.get_data());
 		} else if (c != '\r') {
-			line.push_back(c);
+			line.push_back(char(c));
 		}
 		c = get_8();
@ -467,17 +533,6 @@ String FileAccess::get_as_text(bool p_skip_cr) const {
 	return text;
 }
 uint64_t FileAccess::get_buffer(uint8_t *p_dst, uint64_t p_length) const {
 	ERR_FAIL_COND_V(!p_dst && p_length > 0, -1);
 	uint64_t i = 0;
 	for (i = 0; i < p_length && !eof_reached(); i++) {
 		p_dst[i] = get_8();
 	}
 	return i;
 }
 Vector<uint8_t> FileAccess::get_buffer(int64_t p_length) const {
 	Vector<uint8_t> data;
@ -487,10 +542,10 @@ Vector<uint8_t> FileAccess::get_buffer(int64_t p_length) const {
 	}
 	Error err = data.resize(p_length);
-	ERR_FAIL_COND_V_MSG(err != OK, data, "Can't resize data to " + itos(p_length) + " elements.");
+	ERR_FAIL_COND_V_MSG(err != OK, data, vformat("Can't resize data to %d elements.", p_length));
 	uint8_t *w = data.ptrw();
-	int64_t len = get_buffer(&w[0], p_length);
+	int64_t len = get_buffer(w, p_length);
 	if (len < p_length) {
 		data.resize(len);
@ -510,70 +565,60 @@ String FileAccess::get_as_utf8_string(bool p_skip_cr) const {
 	w[len] = 0;
 	String s;
-	s.parse_utf8((const char *)w, -1, p_skip_cr);
+	s.parse_utf8((const char *)w, len, p_skip_cr);
 	return s;
 }
-void FileAccess::store_16(uint16_t p_dest) {
+bool FileAccess::store_8(uint8_t p_dest) {
-	uint8_t a, b;
+	return store_buffer(&p_dest, sizeof(uint8_t));
 	a = p_dest & 0xFF;
 	b = p_dest >> 8;
 	if (big_endian) {
 		SWAP(a, b);
 	}
 	store_8(a);
 	store_8(b);
 }
-void FileAccess::store_32(uint32_t p_dest) {
+bool FileAccess::store_16(uint16_t p_dest) {
 	uint16_t a, b;
 	a = p_dest & 0xFFFF;
 	b = p_dest >> 16;
 	if (big_endian) {
-		SWAP(a, b);
+		p_dest = BSWAP16(p_dest);
 	}
-	store_16(a);
+	return store_buffer(reinterpret_cast<uint8_t *>(&p_dest), sizeof(uint16_t));
 	store_16(b);
 }
-void FileAccess::store_64(uint64_t p_dest) {
+bool FileAccess::store_32(uint32_t p_dest) {
 	uint32_t a, b;
 	a = p_dest & 0xFFFFFFFF;
 	b = p_dest >> 32;
 	if (big_endian) {
-		SWAP(a, b);
+		p_dest = BSWAP32(p_dest);
 	}
-	store_32(a);
+	return store_buffer(reinterpret_cast<uint8_t *>(&p_dest), sizeof(uint32_t));
 	store_32(b);
 }
-void FileAccess::store_real(real_t p_real) {
+bool FileAccess::store_64(uint64_t p_dest) {
 	if (big_endian) {
 		p_dest = BSWAP64(p_dest);
 	}
 	return store_buffer(reinterpret_cast<uint8_t *>(&p_dest), sizeof(uint64_t));
 }
 bool FileAccess::store_real(real_t p_real) {
 	if constexpr (sizeof(real_t) == 4) {
-		store_float(p_real);
+		return store_float(p_real);
 	} else {
-		store_double(p_real);
+		return store_double(p_real);
 	}
 }
-void FileAccess::store_float(float p_dest) {
+bool FileAccess::store_half(float p_dest) {
 	return store_16(Math::make_half_float(p_dest));
 }
 bool FileAccess::store_float(float p_dest) {
 	MarshallFloat m;
 	m.f = p_dest;
-	store_32(m.i);
+	return store_32(m.i);
 }
-void FileAccess::store_double(double p_dest) {
+bool FileAccess::store_double(double p_dest) {
 	MarshallDouble m;
 	m.d = p_dest;
-	store_64(m.l);
+	return store_64(m.l);
 }
 uint64_t FileAccess::get_modified_time(const String &p_file) {
@ -582,7 +627,7 @@ uint64_t FileAccess::get_modified_time(const String &p_file) {
 	}
 	Ref<FileAccess> fa = create_for_path(p_file);
-	ERR_FAIL_COND_V_MSG(fa.is_null(), 0, "Cannot create FileAccess for path '" + p_file + "'.");
+	ERR_FAIL_COND_V_MSG(fa.is_null(), 0, vformat("Cannot create FileAccess for path '%s'.", p_file));
 	uint64_t mt = fa->_get_modified_time(p_file);
 	return mt;
@ -594,7 +639,7 @@ BitField<FileAccess::UnixPermissionFlags> FileAccess::get_unix_permissions(const
 	}
 	Ref<FileAccess> fa = create_for_path(p_file);
-	ERR_FAIL_COND_V_MSG(fa.is_null(), 0, "Cannot create FileAccess for path '" + p_file + "'.");
+	ERR_FAIL_COND_V_MSG(fa.is_null(), 0, vformat("Cannot create FileAccess for path '%s'.", p_file));
 	return fa->_get_unix_permissions(p_file);
 }
@ -605,7 +650,7 @@ Error FileAccess::set_unix_permissions(const String &p_file, BitField<FileAccess
 	}
 	Ref<FileAccess> fa = create_for_path(p_file);
-	ERR_FAIL_COND_V_MSG(fa.is_null(), ERR_CANT_CREATE, "Cannot create FileAccess for path '" + p_file + "'.");
+	ERR_FAIL_COND_V_MSG(fa.is_null(), ERR_CANT_CREATE, vformat("Cannot create FileAccess for path '%s'.", p_file));
 	Error err = fa->_set_unix_permissions(p_file, p_permissions);
 	return err;
@ -617,7 +662,7 @@ bool FileAccess::get_hidden_attribute(const String &p_file) {
 	}
 	Ref<FileAccess> fa = create_for_path(p_file);
-	ERR_FAIL_COND_V_MSG(fa.is_null(), false, "Cannot create FileAccess for path '" + p_file + "'.");
+	ERR_FAIL_COND_V_MSG(fa.is_null(), false, vformat("Cannot create FileAccess for path '%s'.", p_file));
 	return fa->_get_hidden_attribute(p_file);
 }
@ -628,7 +673,7 @@ Error FileAccess::set_hidden_attribute(const String &p_file, bool p_hidden) {
 	}
 	Ref<FileAccess> fa = create_for_path(p_file);
-	ERR_FAIL_COND_V_MSG(fa.is_null(), ERR_CANT_CREATE, "Cannot create FileAccess for path '" + p_file + "'.");
+	ERR_FAIL_COND_V_MSG(fa.is_null(), ERR_CANT_CREATE, vformat("Cannot create FileAccess for path '%s'.", p_file));
 	Error err = fa->_set_hidden_attribute(p_file, p_hidden);
 	return err;
@ -640,7 +685,7 @@ bool FileAccess::get_read_only_attribute(const String &p_file) {
 	}
 	Ref<FileAccess> fa = create_for_path(p_file);
-	ERR_FAIL_COND_V_MSG(fa.is_null(), false, "Cannot create FileAccess for path '" + p_file + "'.");
+	ERR_FAIL_COND_V_MSG(fa.is_null(), false, vformat("Cannot create FileAccess for path '%s'.", p_file));
 	return fa->_get_read_only_attribute(p_file);
 }
@ -651,25 +696,24 @@ Error FileAccess::set_read_only_attribute(const String &p_file, bool p_ro) {
 	}
 	Ref<FileAccess> fa = create_for_path(p_file);
-	ERR_FAIL_COND_V_MSG(fa.is_null(), ERR_CANT_CREATE, "Cannot create FileAccess for path '" + p_file + "'.");
+	ERR_FAIL_COND_V_MSG(fa.is_null(), ERR_CANT_CREATE, vformat("Cannot create FileAccess for path '%s'.", p_file));
 	Error err = fa->_set_read_only_attribute(p_file, p_ro);
 	return err;
 }
-void FileAccess::store_string(const String &p_string) {
+bool FileAccess::store_string(const String &p_string) {
 	if (p_string.length() == 0) {
-		return;
+		return true;
 	}
 	CharString cs = p_string.utf8();
-	store_buffer((uint8_t *)&cs[0], cs.length());
+	return store_buffer((uint8_t *)&cs[0], cs.length());
 }
-void FileAccess::store_pascal_string(const String &p_string) {
+bool FileAccess::store_pascal_string(const String &p_string) {
 	CharString cs = p_string.utf8();
-	store_32(cs.length());
+	return store_32(cs.length()) && store_buffer((uint8_t *)&cs[0], cs.length());
 	store_buffer((uint8_t *)&cs[0], cs.length());
 }
 String FileAccess::get_pascal_string() {
@ -680,24 +724,23 @@ String FileAccess::get_pascal_string() {
 	cs[sl] = 0;
 	String ret;
-	ret.parse_utf8(cs.ptr());
+	ret.parse_utf8(cs.ptr(), sl);
 	return ret;
 }
-void FileAccess::store_line(const String &p_line) {
+bool FileAccess::store_line(const String &p_line) {
-	store_string(p_line);
+	return store_string(p_line) && store_8('\n');
 	store_8('\n');
 }
-void FileAccess::store_csv_line(const Vector<String> &p_values, const String &p_delim) {
+bool FileAccess::store_csv_line(const Vector<String> &p_values, const String &p_delim) {
-	ERR_FAIL_COND(p_delim.length() != 1);
+	ERR_FAIL_COND_V(p_delim.length() != 1, false);
 	String line = "";
 	int size = p_values.size();
 	for (int i = 0; i < size; ++i) {
 		String value = p_values[i];
-		if (value.contains("\"") || value.contains(p_delim) || value.contains("\n")) {
+		if (value.contains_char('"') || value.contains(p_delim) || value.contains_char('\n')) {
 			value = "\"" + value.replace("\"", "\"\"") + "\"";
 		}
 		if (i < size - 1) {
@ -707,41 +750,43 @@ void FileAccess::store_csv_line(const Vector<String> &p_values, const String &p_
 		line += value;
 	}
-	store_line(line);
+	return store_line(line);
 }
-void FileAccess::store_buffer(const uint8_t *p_src, uint64_t p_length) {
+bool FileAccess::store_buffer(const Vector<uint8_t> &p_buffer) {
 	ERR_FAIL_COND(!p_src && p_length > 0);
 	for (uint64_t i = 0; i < p_length; i++) {
 		store_8(p_src[i]);
 	}
 }
 void FileAccess::store_buffer(const Vector<uint8_t> &p_buffer) {
 	uint64_t len = p_buffer.size();
 	if (len == 0) {
-		return;
+		return true;
 	}
 	const uint8_t *r = p_buffer.ptr();
-	store_buffer(&r[0], len);
+	return store_buffer(r, len);
 }
-void FileAccess::store_var(const Variant &p_var, bool p_full_objects) {
+bool FileAccess::store_buffer(const uint8_t *p_src, uint64_t p_length) {
 	ERR_FAIL_COND_V(!p_src && p_length > 0, false);
 	for (uint64_t i = 0; i < p_length; i++) {
 		if (unlikely(!store_8(p_src[i]))) {
 			return false;
 		}
 	}
 	return true;
 }
 bool FileAccess::store_var(const Variant &p_var, bool p_full_objects) {
 	int len;
 	Error err = encode_variant(p_var, nullptr, len, p_full_objects);
-	ERR_FAIL_COND_MSG(err != OK, "Error when trying to encode Variant.");
+	ERR_FAIL_COND_V_MSG(err != OK, false, "Error when trying to encode Variant.");
 	Vector<uint8_t> buff;
 	buff.resize(len);
 	uint8_t *w = buff.ptrw();
 	err = encode_variant(p_var, &w[0], len, p_full_objects);
-	ERR_FAIL_COND_MSG(err != OK, "Error when trying to encode Variant.");
+	ERR_FAIL_COND_V_MSG(err != OK, false, "Error when trying to encode Variant.");
-	store_32(len);
+	return store_32(uint32_t(len)) && store_buffer(buff);
 	store_buffer(buff);
 }
 Vector<uint8_t> FileAccess::get_file_as_bytes(const String &p_path, Error *r_error) {
@ -750,7 +795,7 @@ Vector<uint8_t> FileAccess::get_file_as_bytes(const String &p_path, Error *r_err
 		if (r_error) { // if error requested, do not throw error
 			return Vector<uint8_t>();
 		}
-		ERR_FAIL_V_MSG(Vector<uint8_t>(), "Can't open file from path '" + String(p_path) + "'.");
+		ERR_FAIL_V_MSG(Vector<uint8_t>(), vformat("Can't open file from path '%s'.", String(p_path)));
 	}
 	Vector<uint8_t> data;
 	data.resize(f->get_length());
@ -768,7 +813,7 @@ String FileAccess::get_file_as_string(const String &p_path, Error *r_error) {
 		if (r_error) {
 			return String();
 		}
-		ERR_FAIL_V_MSG(String(), "Can't get file as string from path '" + String(p_path) + "'.");
+		ERR_FAIL_V_MSG(String(), vformat("Can't get file as string from path '%s'.", String(p_path)));
 	}
 	String ret;
@ -859,10 +904,11 @@ String FileAccess::get_sha256(const String &p_file) {
 void FileAccess::_bind_methods() {
 	ClassDB::bind_static_method("FileAccess", D_METHOD("open", "path", "flags"), &FileAccess::_open);
-	ClassDB::bind_static_method("FileAccess", D_METHOD("open_encrypted", "path", "mode_flags", "key"), &FileAccess::open_encrypted);
+	ClassDB::bind_static_method("FileAccess", D_METHOD("open_encrypted", "path", "mode_flags", "key", "iv"), &FileAccess::open_encrypted, DEFVAL(Vector<uint8_t>()));
 	ClassDB::bind_static_method("FileAccess", D_METHOD("open_encrypted_with_pass", "path", "mode_flags", "pass"), &FileAccess::open_encrypted_pass);
 	ClassDB::bind_static_method("FileAccess", D_METHOD("open_compressed", "path", "mode_flags", "compression_mode"), &FileAccess::open_compressed, DEFVAL(0));
 	ClassDB::bind_static_method("FileAccess", D_METHOD("get_open_error"), &FileAccess::get_open_error);
 	ClassDB::bind_static_method("FileAccess", D_METHOD("create_temp", "mode_flags", "prefix", "extension", "keep"), &FileAccess::_create_temp, DEFVAL(""), DEFVAL(""), DEFVAL(false));
 	ClassDB::bind_static_method("FileAccess", D_METHOD("get_file_as_bytes", "path"), &FileAccess::_get_file_as_bytes);
 	ClassDB::bind_static_method("FileAccess", D_METHOD("get_file_as_string", "path"), &FileAccess::_get_file_as_string);
@ -881,6 +927,7 @@ void FileAccess::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("get_16"), &FileAccess::get_16);
 	ClassDB::bind_method(D_METHOD("get_32"), &FileAccess::get_32);
 	ClassDB::bind_method(D_METHOD("get_64"), &FileAccess::get_64);
 	ClassDB::bind_method(D_METHOD("get_half"), &FileAccess::get_half);
 	ClassDB::bind_method(D_METHOD("get_float"), &FileAccess::get_float);
 	ClassDB::bind_method(D_METHOD("get_double"), &FileAccess::get_double);
 	ClassDB::bind_method(D_METHOD("get_real"), &FileAccess::get_real);
@ -899,10 +946,11 @@ void FileAccess::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("store_16", "value"), &FileAccess::store_16);
 	ClassDB::bind_method(D_METHOD("store_32", "value"), &FileAccess::store_32);
 	ClassDB::bind_method(D_METHOD("store_64", "value"), &FileAccess::store_64);
 	ClassDB::bind_method(D_METHOD("store_half", "value"), &FileAccess::store_half);
 	ClassDB::bind_method(D_METHOD("store_float", "value"), &FileAccess::store_float);
 	ClassDB::bind_method(D_METHOD("store_double", "value"), &FileAccess::store_double);
 	ClassDB::bind_method(D_METHOD("store_real", "value"), &FileAccess::store_real);
-	ClassDB::bind_method(D_METHOD("store_buffer", "buffer"), (void(FileAccess::*)(const Vector<uint8_t> &)) & FileAccess::store_buffer);
+	ClassDB::bind_method(D_METHOD("store_buffer", "buffer"), (bool(FileAccess::*)(const Vector<uint8_t> &)) & FileAccess::store_buffer);
 	ClassDB::bind_method(D_METHOD("store_line", "line"), &FileAccess::store_line);
 	ClassDB::bind_method(D_METHOD("store_csv_line", "values", "delim"), &FileAccess::store_csv_line, DEFVAL(","));
 	ClassDB::bind_method(D_METHOD("store_string", "string"), &FileAccess::store_string);
@ -950,3 +998,7 @@ void FileAccess::_bind_methods() {
 	BIND_BITFIELD_FLAG(UNIX_SET_GROUP_ID);
 	BIND_BITFIELD_FLAG(UNIX_RESTRICTED_DELETE);
 }
 FileAccess::~FileAccess() {
 	_delete_temp();
 }
--- a/engine/core/io/file_access.h
+++ b/engine/core/io/file_access.h
@ -46,7 +46,7 @@ class FileAccess : public RefCounted {
 	GDCLASS(FileAccess, RefCounted);
 public:
-	enum AccessType {
+	enum AccessType : int32_t {
 		ACCESS_RESOURCES,
 		ACCESS_USERDATA,
 		ACCESS_FILESYSTEM,
@ -54,14 +54,14 @@ public:
 		ACCESS_MAX
 	};
-	enum ModeFlags {
+	enum ModeFlags : int32_t {
 		READ = 1,
 		WRITE = 2,
 		READ_WRITE = 3,
 		WRITE_READ = 7,
 	};
-	enum UnixPermissionFlags {
+	enum UnixPermissionFlags : int32_t {
 		UNIX_EXECUTE_OTHER = 0x001,
 		UNIX_WRITE_OTHER = 0x002,
 		UNIX_READ_OTHER = 0x004,
@ -76,7 +76,7 @@ public:
 		UNIX_SET_USER_ID = 0x800,
 	};
-	enum CompressionMode {
+	enum CompressionMode : int32_t {
 		COMPRESSION_FASTLZ = Compression::MODE_FASTLZ,
 		COMPRESSION_DEFLATE = Compression::MODE_DEFLATE,
 		COMPRESSION_ZSTD = Compression::MODE_ZSTD,
@ -109,6 +109,27 @@ protected:
 	static FileCloseFailNotify close_fail_notify;
 #ifndef DISABLE_DEPRECATED
 	static Ref<FileAccess> _open_encrypted_bind_compat_98918(const String &p_path, ModeFlags p_mode_flags, const Vector<uint8_t> &p_key);
 	void store_8_bind_compat_78289(uint8_t p_dest);
 	void store_16_bind_compat_78289(uint16_t p_dest);
 	void store_32_bind_compat_78289(uint32_t p_dest);
 	void store_64_bind_compat_78289(uint64_t p_dest);
 	void store_buffer_bind_compat_78289(const Vector<uint8_t> &p_buffer);
 	void store_var_bind_compat_78289(const Variant &p_var, bool p_full_objects = false);
 	void store_half_bind_compat_78289(float p_dest);
 	void store_float_bind_compat_78289(float p_dest);
 	void store_double_bind_compat_78289(double p_dest);
 	void store_real_bind_compat_78289(real_t p_real);
 	void store_string_bind_compat_78289(const String &p_string);
 	void store_line_bind_compat_78289(const String &p_line);
 	void store_csv_line_bind_compat_78289(const Vector<String> &p_values, const String &p_delim = ",");
 	void store_pascal_string_bind_compat_78289(const String &p_string);
 	static void _bind_compatibility_methods();
 #endif
 private:
 	static bool backup_save;
 	thread_local static Error last_file_open_error;
@ -122,6 +143,13 @@ private:
 	static Ref<FileAccess> _open(const String &p_path, ModeFlags p_mode_flags);
 	bool _is_temp_file = false;
 	bool _temp_keep_after_use = false;
 	String _temp_path;
 	void _delete_temp();
 	static Ref<FileAccess> _create_temp(int p_mode_flags, const String &p_prefix = "", const String &p_extension = "", bool p_keep = false);
 public:
 	static void set_file_close_fail_notify_callback(FileCloseFailNotify p_cbk) { close_fail_notify = p_cbk; }
@ -137,18 +165,19 @@ public:
 	virtual bool eof_reached() const = 0; ///< reading passed EOF
-	virtual uint8_t get_8() const = 0; ///< get a byte
+	virtual uint8_t get_8() const; ///< get a byte
 	virtual uint16_t get_16() const; ///< get 16 bits uint
 	virtual uint32_t get_32() const; ///< get 32 bits uint
 	virtual uint64_t get_64() const; ///< get 64 bits uint
 	virtual float get_half() const;
 	virtual float get_float() const;
 	virtual double get_double() const;
 	virtual real_t get_real() const;
 	Variant get_var(bool p_allow_objects = false) const;
-	virtual uint64_t get_buffer(uint8_t *p_dst, uint64_t p_length) const; ///< get an array of bytes
+	virtual uint64_t get_buffer(uint8_t *p_dst, uint64_t p_length) const = 0; ///< get an array of bytes, needs to be overwritten by children.
 	Vector<uint8_t> get_buffer(int64_t p_length) const;
 	virtual String get_line() const;
 	virtual String get_token() const;
@ -157,6 +186,7 @@ public:
 	virtual String get_as_utf8_string(bool p_skip_cr = false) const;
 	/**
 	 * Use this for files WRITTEN in _big_ endian machines (ie, amiga/mac)
 	 * It's not about the current CPU type but file formats.
 	 * This flag gets reset to `false` (little endian) on each open.
@ -168,26 +198,27 @@ public:
 	virtual Error resize(int64_t p_length) = 0;
 	virtual void flush() = 0;
-	virtual void store_8(uint8_t p_dest) = 0; ///< store a byte
+	virtual bool store_8(uint8_t p_dest); ///< store a byte
-	virtual void store_16(uint16_t p_dest); ///< store 16 bits uint
+	virtual bool store_16(uint16_t p_dest); ///< store 16 bits uint
-	virtual void store_32(uint32_t p_dest); ///< store 32 bits uint
+	virtual bool store_32(uint32_t p_dest); ///< store 32 bits uint
-	virtual void store_64(uint64_t p_dest); ///< store 64 bits uint
+	virtual bool store_64(uint64_t p_dest); ///< store 64 bits uint
-	virtual void store_float(float p_dest);
+	virtual bool store_half(float p_dest);
-	virtual void store_double(double p_dest);
+	virtual bool store_float(float p_dest);
-	virtual void store_real(real_t p_real);
+	virtual bool store_double(double p_dest);
 	virtual bool store_real(real_t p_real);
-	virtual void store_string(const String &p_string);
+	virtual bool store_string(const String &p_string);
-	virtual void store_line(const String &p_line);
+	virtual bool store_line(const String &p_line);
-	virtual void store_csv_line(const Vector<String> &p_values, const String &p_delim = ",");
+	virtual bool store_csv_line(const Vector<String> &p_values, const String &p_delim = ",");
-	virtual void store_pascal_string(const String &p_string);
+	virtual bool store_pascal_string(const String &p_string);
 	virtual String get_pascal_string();
-	virtual void store_buffer(const uint8_t *p_src, uint64_t p_length); ///< store an array of bytes
+	virtual bool store_buffer(const uint8_t *p_src, uint64_t p_length) = 0; ///< store an array of bytes, needs to be overwritten by children.
-	void store_buffer(const Vector<uint8_t> &p_buffer);
+	bool store_buffer(const Vector<uint8_t> &p_buffer);
-	void store_var(const Variant &p_var, bool p_full_objects = false);
+	bool store_var(const Variant &p_var, bool p_full_objects = false);
 	virtual void close() = 0;
@ -198,8 +229,9 @@ public:
 	static Ref<FileAccess> create(AccessType p_access); /// Create a file access (for the current platform) this is the only portable way of accessing files.
 	static Ref<FileAccess> create_for_path(const String &p_path);
 	static Ref<FileAccess> open(const String &p_path, int p_mode_flags, Error *r_error = nullptr); /// Create a file access (for the current platform) this is the only portable way of accessing files.
 	static Ref<FileAccess> create_temp(int p_mode_flags, const String &p_prefix = "", const String &p_extension = "", bool p_keep = false, Error *r_error = nullptr);
-	static Ref<FileAccess> open_encrypted(const String &p_path, ModeFlags p_mode_flags, const Vector<uint8_t> &p_key);
+	static Ref<FileAccess> open_encrypted(const String &p_path, ModeFlags p_mode_flags, const Vector<uint8_t> &p_key, const Vector<uint8_t> &p_iv = Vector<uint8_t>());
 	static Ref<FileAccess> open_encrypted_pass(const String &p_path, ModeFlags p_mode_flags, const String &p_pass);
 	static Ref<FileAccess> open_compressed(const String &p_path, ModeFlags p_mode_flags, CompressionMode p_compress_mode = COMPRESSION_FASTLZ);
 	static Error get_open_error();
@ -215,8 +247,8 @@ public:
 	static bool get_read_only_attribute(const String &p_file);
 	static Error set_read_only_attribute(const String &p_file, bool p_ro);
-	static void set_backup_save(bool p_enable) { backup_save = p_enable; };
+	static void set_backup_save(bool p_enable) { backup_save = p_enable; }
-	static bool is_backup_save_enabled() { return backup_save; };
+	static bool is_backup_save_enabled() { return backup_save; }
 	static String get_md5(const String &p_file);
 	static String get_sha256(const String &p_file);
@ -233,8 +265,9 @@ public:
 		create_func[p_access] = _create_builtin<T>;
 	}
 public:
 	FileAccess() {}
-	virtual ~FileAccess() {}
+	virtual ~FileAccess();
 };
 VARIANT_ENUM_CAST(FileAccess::CompressionMode);
--- a/engine/core/io/file_access_compressed.cpp
+++ b/engine/core/io/file_access_compressed.cpp
@ -30,8 +30,6 @@
 #include "file_access_compressed.h"
 #include "core/string/print_string.h"
 void FileAccessCompressed::configure(const String &p_magic, Compression::Mode p_mode, uint32_t p_block_size) {
 	magic = p_magic.ascii().get_data();
 	magic = (magic + "    ").substr(0, 4);
@ -40,25 +38,13 @@ void FileAccessCompressed::configure(const String &p_magic, Compression::Mode p_
 	block_size = p_block_size;
 }
 #define WRITE_FIT(m_bytes)                                  \
 	{                                                       \
 		if (write_pos + (m_bytes) > write_max) {            \
 			write_max = write_pos + (m_bytes);              \
 		}                                                   \
 		if (write_max > write_buffer_size) {                \
 			write_buffer_size = next_power_of_2(write_max); \
 			buffer.resize(write_buffer_size);               \
 			write_ptr = buffer.ptrw();                      \
 		}                                                   \
 	}
 Error FileAccessCompressed::open_after_magic(Ref<FileAccess> p_base) {
 	f = p_base;
 	cmode = (Compression::Mode)f->get_32();
 	block_size = f->get_32();
 	if (block_size == 0) {
 		f.unref();
-		ERR_FAIL_V_MSG(ERR_FILE_CORRUPT, "Can't open compressed file '" + p_base->get_path() + "' with block size 0, it is corrupted.");
+		ERR_FAIL_V_MSG(ERR_FILE_CORRUPT, vformat("Can't open compressed file '%s' with block size 0, it is corrupted.", p_base->get_path()));
 	}
 	read_total = f->get_32();
 	uint32_t bc = (read_total / block_size) + 1;
@ -137,7 +123,7 @@ void FileAccessCompressed::_close() {
 		f->store_buffer((const uint8_t *)mgc.get_data(), mgc.length()); //write header 4
 		f->store_32(cmode); //write compression mode 4
 		f->store_32(block_size); //write block size 4
-		f->store_32(write_max); //max amount of data written 4
+		f->store_32(uint32_t(write_max)); //max amount of data written 4
 		uint32_t bc = (write_max / block_size) + 1;
 		for (uint32_t i = 0; i < bc; i++) {
@ -159,7 +145,7 @@ void FileAccessCompressed::_close() {
 		f->seek(16); //ok write block sizes
 		for (uint32_t i = 0; i < bc; i++) {
-			f->store_32(block_sizes[i]);
+			f->store_32(uint32_t(block_sizes[i]));
 		}
 		f->seek_end();
 		f->store_buffer((const uint8_t *)mgc.get_data(), mgc.length()); //magic at the end too
@ -260,38 +246,6 @@ bool FileAccessCompressed::eof_reached() const {
 	}
 }
 uint8_t FileAccessCompressed::get_8() const {
 	ERR_FAIL_COND_V_MSG(f.is_null(), 0, "File must be opened before use.");
 	ERR_FAIL_COND_V_MSG(writing, 0, "File has not been opened in read mode.");
 	if (at_end) {
 		read_eof = true;
 		return 0;
 	}
 	uint8_t ret = read_ptr[read_pos];
 	read_pos++;
 	if (read_pos >= read_block_size) {
 		read_block++;
 		if (read_block < read_block_count) {
 			//read another block of compressed data
 			f->get_buffer(comp_buffer.ptrw(), read_blocks[read_block].csize);
 			int total = Compression::decompress(buffer.ptrw(), read_blocks.size() == 1 ? read_total : block_size, comp_buffer.ptr(), read_blocks[read_block].csize, cmode);
 			ERR_FAIL_COND_V_MSG(total == -1, 0, "Compressed file is corrupt.");
 			read_block_size = read_block == read_block_count - 1 ? read_total % block_size : block_size;
 			read_pos = 0;
 		} else {
 			read_block--;
 			at_end = true;
 		}
 	}
 	return ret;
 }
 uint64_t FileAccessCompressed::get_buffer(uint8_t *p_dst, uint64_t p_length) const {
 	ERR_FAIL_COND_V(!p_dst && p_length > 0, -1);
 	ERR_FAIL_COND_V_MSG(f.is_null(), -1, "File must be opened before use.");
@ -341,12 +295,25 @@ void FileAccessCompressed::flush() {
 	// compressed files keep data in memory till close()
 }
-void FileAccessCompressed::store_8(uint8_t p_dest) {
+bool FileAccessCompressed::store_buffer(const uint8_t *p_src, uint64_t p_length) {
-	ERR_FAIL_COND_MSG(f.is_null(), "File must be opened before use.");
+	ERR_FAIL_COND_V_MSG(f.is_null(), false, "File must be opened before use.");
-	ERR_FAIL_COND_MSG(!writing, "File has not been opened in write mode.");
+	ERR_FAIL_COND_V_MSG(!writing, false, "File has not been opened in write mode.");
-	WRITE_FIT(1);
+	if (write_pos + (p_length) > write_max) {
-	write_ptr[write_pos++] = p_dest;
+		write_max = write_pos + (p_length);
 	}
 	if (write_max > write_buffer_size) {
 		write_buffer_size = next_power_of_2(write_max);
 		ERR_FAIL_COND_V(buffer.resize(write_buffer_size) != OK, false);
 		write_ptr = buffer.ptrw();
 	}
 	if (p_length) {
 		memcpy(write_ptr + write_pos, p_src, p_length);
 	}
 	write_pos += p_length;
 	return true;
 }
 bool FileAccessCompressed::file_exists(const String &p_name) {
--- a/engine/core/io/file_access_compressed.h
+++ b/engine/core/io/file_access_compressed.h
@ -83,14 +83,13 @@ public:
 	virtual bool eof_reached() const override; ///< reading passed EOF
 	virtual uint8_t get_8() const override; ///< get a byte
 	virtual uint64_t get_buffer(uint8_t *p_dst, uint64_t p_length) const override;
 	virtual Error get_error() const override; ///< get last error
 	virtual Error resize(int64_t p_length) override { return ERR_UNAVAILABLE; }
 	virtual void flush() override;
-	virtual void store_8(uint8_t p_dest) override; ///< store a byte
+	virtual bool store_buffer(const uint8_t *p_src, uint64_t p_length) override;
 	virtual bool file_exists(const String &p_name) override; ///< return true if a file exists
--- a/engine/core/io/file_access_encrypted.cpp
+++ b/engine/core/io/file_access_encrypted.cpp
@ -31,13 +31,10 @@
 #include "file_access_encrypted.h"
 #include "core/crypto/crypto_core.h"
 #include "core/string/print_string.h"
 #include "core/variant/variant.h"
-#include <stdio.h>
+Error FileAccessEncrypted::open_and_parse(Ref<FileAccess> p_base, const Vector<uint8_t> &p_key, Mode p_mode, bool p_with_magic, const Vector<uint8_t> &p_iv) {
-
+	ERR_FAIL_COND_V_MSG(file.is_valid(), ERR_ALREADY_IN_USE, vformat("Can't open file while another file from path '%s' is open.", file->get_path_absolute()));
 Error FileAccessEncrypted::open_and_parse(Ref<FileAccess> p_base, const Vector<uint8_t> &p_key, Mode p_mode, bool p_with_magic) {
 	ERR_FAIL_COND_V_MSG(file != nullptr, ERR_ALREADY_IN_USE, "Can't open file while another file from path '" + file->get_path_absolute() + "' is open.");
 	ERR_FAIL_COND_V(p_key.size() != 32, ERR_INVALID_PARAMETER);
 	pos = 0;
@ -49,6 +46,16 @@ Error FileAccessEncrypted::open_and_parse(Ref<FileAccess> p_base, const Vector<u
 		writing = true;
 		file = p_base;
 		key = p_key;
 		if (p_iv.is_empty()) {
 			iv.resize(16);
 			CryptoCore::RandomGenerator rng;
 			ERR_FAIL_COND_V_MSG(rng.init(), FAILED, "Failed to initialize random number generator.");
 			Error err = rng.get_random_bytes(iv.ptrw(), 16);
 			ERR_FAIL_COND_V(err != OK, err);
 		} else {
 			ERR_FAIL_COND_V(p_iv.size() != 16, ERR_INVALID_PARAMETER);
 			iv = p_iv;
 		}
 	} else if (p_mode == MODE_READ) {
 		writing = false;
@ -63,10 +70,8 @@ Error FileAccessEncrypted::open_and_parse(Ref<FileAccess> p_base, const Vector<u
 		p_base->get_buffer(md5d, 16);
 		length = p_base->get_64();
-		unsigned char iv[16];
+		iv.resize(16);
-		for (int i = 0; i < 16; i++) {
+		p_base->get_buffer(iv.ptrw(), 16);
 			iv[i] = p_base->get_8();
 		}
 		base = p_base->get_position();
 		ERR_FAIL_COND_V(p_base->get_length() < base + length, ERR_FILE_CORRUPT);
@ -83,7 +88,7 @@ Error FileAccessEncrypted::open_and_parse(Ref<FileAccess> p_base, const Vector<u
 			CryptoCore::AESContext ctx;
 			ctx.set_encode_key(key.ptrw(), 256); // Due to the nature of CFB, same key schedule is used for both encryption and decryption!
-			ctx.decrypt_cfb(ds, iv, data.ptrw(), data.ptrw());
+			ctx.decrypt_cfb(ds, iv.ptrw(), data.ptrw(), data.ptrw());
 		}
 		data.resize(length);
@ -145,14 +150,9 @@ void FileAccessEncrypted::_close() {
 		file->store_buffer(hash, 16);
 		file->store_64(data.size());
 		file->store_buffer(iv.ptr(), 16);
-		unsigned char iv[16];
+		ctx.encrypt_cfb(len, iv.ptrw(), compressed.ptrw(), compressed.ptrw());
 		for (int i = 0; i < 16; i++) {
 			iv[i] = Math::rand() % 256;
 			file->store_8(iv[i]);
 		}
 		ctx.encrypt_cfb(len, iv, compressed.ptrw(), compressed.ptrw());
 		file->store_buffer(compressed.ptr(), compressed.size());
 		data.clear();
@ -162,7 +162,7 @@ void FileAccessEncrypted::_close() {
 }
 bool FileAccessEncrypted::is_open() const {
-	return file != nullptr;
+	return file.is_valid();
 }
 String FileAccessEncrypted::get_path() const {
@ -206,26 +206,19 @@ bool FileAccessEncrypted::eof_reached() const {
 	return eofed;
 }
-uint8_t FileAccessEncrypted::get_8() const {
+uint64_t FileAccessEncrypted::get_buffer(uint8_t *p_dst, uint64_t p_length) const {
-	ERR_FAIL_COND_V_MSG(writing, 0, "File has not been opened in read mode.");
+	ERR_FAIL_COND_V_MSG(writing, -1, "File has not been opened in read mode.");
-	if (pos >= get_length()) {
+
-		eofed = true;
+	if (!p_length) {
 		return 0;
 	}
-	uint8_t b = data[pos];
+	ERR_FAIL_NULL_V(p_dst, -1);
 	pos++;
 	return b;
 }
 uint64_t FileAccessEncrypted::get_buffer(uint8_t *p_dst, uint64_t p_length) const {
 	ERR_FAIL_COND_V(!p_dst && p_length > 0, -1);
 	ERR_FAIL_COND_V_MSG(writing, -1, "File has not been opened in read mode.");
 	uint64_t to_copy = MIN(p_length, get_length() - pos);
-	for (uint64_t i = 0; i < to_copy; i++) {
+
-		p_dst[i] = data[pos++];
+	memcpy(p_dst, data.ptr() + pos, to_copy);
-	}
+	pos += to_copy;
 	if (to_copy < p_length) {
 		eofed = true;
@ -238,21 +231,23 @@ Error FileAccessEncrypted::get_error() const {
 	return eofed ? ERR_FILE_EOF : OK;
 }
-void FileAccessEncrypted::store_buffer(const uint8_t *p_src, uint64_t p_length) {
+bool FileAccessEncrypted::store_buffer(const uint8_t *p_src, uint64_t p_length) {
-	ERR_FAIL_COND_MSG(!writing, "File has not been opened in write mode.");
+	ERR_FAIL_COND_V_MSG(!writing, false, "File has not been opened in write mode.");
 	ERR_FAIL_COND(!p_src && p_length > 0);
-	if (pos < get_length()) {
+	if (!p_length) {
-		for (uint64_t i = 0; i < p_length; i++) {
+		return true;
 			store_8(p_src[i]);
 		}
 	} else if (pos == get_length()) {
 		data.resize(pos + p_length);
 		for (uint64_t i = 0; i < p_length; i++) {
 			data.write[pos + i] = p_src[i];
 		}
 		pos += p_length;
 	}
 	ERR_FAIL_NULL_V(p_src, false);
 	if (pos + p_length >= get_length()) {
 		ERR_FAIL_COND_V(data.resize(pos + p_length) != OK, false);
 	}
 	memcpy(data.ptrw() + pos, p_src, p_length);
 	pos += p_length;
 	return true;
 }
 void FileAccessEncrypted::flush() {
@ -261,18 +256,6 @@ void FileAccessEncrypted::flush() {
 	// encrypted files keep data in memory till close()
 }
 void FileAccessEncrypted::store_8(uint8_t p_dest) {
 	ERR_FAIL_COND_MSG(!writing, "File has not been opened in write mode.");
 	if (pos < get_length()) {
 		data.write[pos] = p_dest;
 		pos++;
 	} else if (pos == get_length()) {
 		data.push_back(p_dest);
 		pos++;
 	}
 }
 bool FileAccessEncrypted::file_exists(const String &p_name) {
 	Ref<FileAccess> fa = FileAccess::open(p_name, FileAccess::READ);
 	if (fa.is_null()) {
--- a/engine/core/io/file_access_encrypted.h
+++ b/engine/core/io/file_access_encrypted.h
@ -37,13 +37,14 @@
 class FileAccessEncrypted : public FileAccess {
 public:
-	enum Mode {
+	enum Mode : int32_t {
 		MODE_READ,
 		MODE_WRITE_AES256,
 		MODE_MAX
 	};
 private:
 	Vector<uint8_t> iv;
 	Vector<uint8_t> key;
 	bool writing = false;
 	Ref<FileAccess> file;
@ -57,9 +58,11 @@ private:
 	void _close();
 public:
-	Error open_and_parse(Ref<FileAccess> p_base, const Vector<uint8_t> &p_key, Mode p_mode, bool p_with_magic = true);
+	Error open_and_parse(Ref<FileAccess> p_base, const Vector<uint8_t> &p_key, Mode p_mode, bool p_with_magic = true, const Vector<uint8_t> &p_iv = Vector<uint8_t>());
 	Error open_and_parse_password(Ref<FileAccess> p_base, const String &p_key, Mode p_mode);
 	Vector<uint8_t> get_iv() const { return iv; }
 	virtual Error open_internal(const String &p_path, int p_mode_flags) override; ///< open a file
 	virtual bool is_open() const override; ///< true when file is open
@ -73,15 +76,13 @@ public:
 	virtual bool eof_reached() const override; ///< reading passed EOF
 	virtual uint8_t get_8() const override; ///< get a byte
 	virtual uint64_t get_buffer(uint8_t *p_dst, uint64_t p_length) const override;
 	virtual Error get_error() const override; ///< get last error
 	virtual Error resize(int64_t p_length) override { return ERR_UNAVAILABLE; }
 	virtual void flush() override;
-	virtual void store_8(uint8_t p_dest) override; ///< store a byte
+	virtual bool store_buffer(const uint8_t *p_src, uint64_t p_length) override; ///< store an array of bytes
 	virtual void store_buffer(const uint8_t *p_src, uint64_t p_length) override; ///< store an array of bytes
 	virtual bool file_exists(const String &p_name) override; ///< return true if a file exists
--- a/engine/core/io/file_access_memory.cpp
+++ b/engine/core/io/file_access_memory.cpp
@ -31,8 +31,6 @@
 #include "file_access_memory.h"
 #include "core/config/project_settings.h"
 #include "core/io/dir_access.h"
 #include "core/templates/rb_map.h"
 static HashMap<String, Vector<uint8_t>> *files = nullptr;
@ -85,7 +83,7 @@ Error FileAccessMemory::open_internal(const String &p_path, int p_mode_flags) {
 	//name = DirAccess::normalize_path(name);
 	HashMap<String, Vector<uint8_t>>::Iterator E = files->find(name);
-	ERR_FAIL_COND_V_MSG(!E, ERR_FILE_NOT_FOUND, "Can't find file '" + p_path + "'.");
+	ERR_FAIL_COND_V_MSG(!E, ERR_FILE_NOT_FOUND, vformat("Can't find file '%s'.", p_path));
 	data = E->value.ptrw();
 	length = E->value.size();
@ -122,18 +120,12 @@ bool FileAccessMemory::eof_reached() const {
 	return pos >= length;
 }
 uint8_t FileAccessMemory::get_8() const {
 	uint8_t ret = 0;
 	if (pos < length) {
 		ret = data[pos];
 	}
 	++pos;
 	return ret;
 }
 uint64_t FileAccessMemory::get_buffer(uint8_t *p_dst, uint64_t p_length) const {
-	ERR_FAIL_COND_V(!p_dst && p_length > 0, -1);
+	if (!p_length) {
 		return 0;
 	}
 	ERR_FAIL_NULL_V(p_dst, -1);
 	ERR_FAIL_NULL_V(data, -1);
 	uint64_t left = length - pos;
@ -157,20 +149,20 @@ void FileAccessMemory::flush() {
 	ERR_FAIL_NULL(data);
 }
-void FileAccessMemory::store_8(uint8_t p_byte) {
+bool FileAccessMemory::store_buffer(const uint8_t *p_src, uint64_t p_length) {
-	ERR_FAIL_NULL(data);
+	if (!p_length) {
-	ERR_FAIL_COND(pos >= length);
+		return true;
-	data[pos++] = p_byte;
+	}
-}
+
 	ERR_FAIL_NULL_V(p_src, false);
 void FileAccessMemory::store_buffer(const uint8_t *p_src, uint64_t p_length) {
 	ERR_FAIL_COND(!p_src && p_length > 0);
 	uint64_t left = length - pos;
 	uint64_t write = MIN(p_length, left);
 	if (write < p_length) {
 		WARN_PRINT("Writing less data than requested");
 	}
 	memcpy(&data[pos], p_src, write);
 	pos += write;
 	ERR_FAIL_COND_V_MSG(write < p_length, false, "Writing less data than requested.");
 	return true;
 }
--- a/engine/core/io/file_access_memory.h
+++ b/engine/core/io/file_access_memory.h
@ -55,16 +55,13 @@ public:
 	virtual bool eof_reached() const override; ///< reading passed EOF
 	virtual uint8_t get_8() const override; ///< get a byte
 	virtual uint64_t get_buffer(uint8_t *p_dst, uint64_t p_length) const override; ///< get an array of bytes
 	virtual Error get_error() const override; ///< get last error
 	virtual Error resize(int64_t p_length) override { return ERR_UNAVAILABLE; }
 	virtual void flush() override;
-	virtual void store_8(uint8_t p_byte) override; ///< store a byte
+	virtual bool store_buffer(const uint8_t *p_src, uint64_t p_length) override; ///< store an array of bytes
 	virtual void store_buffer(const uint8_t *p_src, uint64_t p_length) override; ///< store an array of bytes
 	virtual bool file_exists(const String &p_name) override; ///< return true if a file exists
--- a/engine/core/io/file_access_pack.cpp
+++ b/engine/core/io/file_access_pack.cpp
@ -35,8 +35,6 @@
 #include "core/os/os.h"
 #include "core/version.h"
 #include <stdio.h>
 Error PackedData::add_pack(const String &p_path, bool p_replace_files, uint64_t p_offset) {
 	for (int i = 0; i < sources.size(); i++) {
 		if (sources[i]->try_open_pack(p_path, p_replace_files, p_offset)) {
@ -48,7 +46,7 @@ Error PackedData::add_pack(const String &p_path, bool p_replace_files, uint64_t
 }
 void PackedData::add_path(const String &p_pkg_path, const String &p_path, uint64_t p_ofs, uint64_t p_size, const uint8_t *p_md5, PackSource *p_src, bool p_replace_files, bool p_encrypted) {
-	String simplified_path = p_path.simplify_path();
+	String simplified_path = p_path.simplify_path().trim_prefix("res://");
 	PathMD5 pmd5(simplified_path.md5_buffer());
 	bool exists = files.has(pmd5);
@ -68,13 +66,11 @@ void PackedData::add_path(const String &p_pkg_path, const String &p_path, uint64
 	}
 	if (!exists) {
-		//search for dir
+		// Search for directory.
 		String p = simplified_path.replace_first("res://", "");
 		PackedDir *cd = root;
-		if (p.contains("/")) { //in a subdir
+		if (simplified_path.contains_char('/')) { // In a subdirectory.
-
+			Vector<String> ds = simplified_path.get_base_dir().split("/");
 			Vector<String> ds = p.get_base_dir().split("/");
 			for (int j = 0; j < ds.size(); j++) {
 				if (!cd->subdirs.has(ds[j])) {
@ -89,19 +85,79 @@ void PackedData::add_path(const String &p_pkg_path, const String &p_path, uint64
 			}
 		}
 		String filename = simplified_path.get_file();
-		// Don't add as a file if the path points to a directory
+		// Don't add as a file if the path points to a directory.
 		if (!filename.is_empty()) {
 			cd->files.insert(filename);
 		}
 	}
 }
 void PackedData::remove_path(const String &p_path) {
 	String simplified_path = p_path.simplify_path().trim_prefix("res://");
 	PathMD5 pmd5(simplified_path.md5_buffer());
 	if (!files.has(pmd5)) {
 		return;
 	}
 	// Search for directory.
 	PackedDir *cd = root;
 	if (simplified_path.contains_char('/')) { // In a subdirectory.
 		Vector<String> ds = simplified_path.get_base_dir().split("/");
 		for (int j = 0; j < ds.size(); j++) {
 			if (!cd->subdirs.has(ds[j])) {
 				return; // Subdirectory does not exist, do not bother creating.
 			} else {
 				cd = cd->subdirs[ds[j]];
 			}
 		}
 	}
 	cd->files.erase(simplified_path.get_file());
 	files.erase(pmd5);
 }
 void PackedData::add_pack_source(PackSource *p_source) {
 	if (p_source != nullptr) {
 		sources.push_back(p_source);
 	}
 }
 uint8_t *PackedData::get_file_hash(const String &p_path) {
 	String simplified_path = p_path.simplify_path().trim_prefix("res://");
 	PathMD5 pmd5(simplified_path.md5_buffer());
 	HashMap<PathMD5, PackedFile, PathMD5>::Iterator E = files.find(pmd5);
 	if (!E) {
 		return nullptr;
 	}
 	return E->value.md5;
 }
 HashSet<String> PackedData::get_file_paths() const {
 	HashSet<String> file_paths;
 	_get_file_paths(root, root->name, file_paths);
 	return file_paths;
 }
 void PackedData::_get_file_paths(PackedDir *p_dir, const String &p_parent_dir, HashSet<String> &r_paths) const {
 	for (const String &E : p_dir->files) {
 		r_paths.insert(p_parent_dir.path_join(E));
 	}
 	for (const KeyValue<String, PackedDir *> &E : p_dir->subdirs) {
 		_get_file_paths(E.value, p_parent_dir.path_join(E.key), r_paths);
 	}
 }
 void PackedData::clear() {
 	files.clear();
 	_free_packed_dirs(root);
 	root = memnew(PackedDir);
 }
 PackedData *PackedData::singleton = nullptr;
 PackedData::PackedData() {
@ -207,8 +263,8 @@ bool PackedSourcePCK::try_open_pack(const String &p_path, bool p_replace_files,
 	uint32_t ver_minor = f->get_32();
 	f->get_32(); // patch number, not used for validation.
-	ERR_FAIL_COND_V_MSG(version != PACK_FORMAT_VERSION, false, "Pack version unsupported: " + itos(version) + ".");
+	ERR_FAIL_COND_V_MSG(version != PACK_FORMAT_VERSION, false, vformat("Pack version unsupported: %d.", version));
-	ERR_FAIL_COND_V_MSG(ver_major > VERSION_MAJOR || (ver_major == VERSION_MAJOR && ver_minor > VERSION_MINOR), false, "Pack created with a newer version of the engine: " + itos(ver_major) + "." + itos(ver_minor) + ".");
+	ERR_FAIL_COND_V_MSG(ver_major > VERSION_MAJOR || (ver_major == VERSION_MAJOR && ver_minor > VERSION_MINOR), false, vformat("Pack created with a newer version of the engine: %d.%d.", ver_major, ver_minor));
 	uint32_t pack_flags = f->get_32();
 	uint64_t file_base = f->get_64();
@ -251,15 +307,19 @@ bool PackedSourcePCK::try_open_pack(const String &p_path, bool p_replace_files,
 		cs[sl] = 0;
 		String path;
-		path.parse_utf8(cs.ptr());
+		path.parse_utf8(cs.ptr(), sl);
-		uint64_t ofs = file_base + f->get_64();
+		uint64_t ofs = f->get_64();
 		uint64_t size = f->get_64();
 		uint8_t md5[16];
 		f->get_buffer(md5, 16);
 		uint32_t flags = f->get_32();
-		PackedData::get_singleton()->add_path(p_path, path, ofs + p_offset, size, md5, this, p_replace_files, (flags & PACK_FILE_ENCRYPTED));
+		if (flags & PACK_FILE_REMOVAL) { // The file was removed.
 			PackedData::get_singleton()->remove_path(path);
 		} else {
 			PackedData::get_singleton()->add_path(p_path, path, file_base + ofs + p_offset, size, md5, this, p_replace_files, (flags & PACK_FILE_ENCRYPTED));
 		}
 	}
 	return true;
@ -271,6 +331,44 @@ Ref<FileAccess> PackedSourcePCK::get_file(const String &p_path, PackedData::Pack
 //////////////////////////////////////////////////////////////////
 bool PackedSourceDirectory::try_open_pack(const String &p_path, bool p_replace_files, uint64_t p_offset) {
 	// Load with offset feature only supported for PCK files.
 	ERR_FAIL_COND_V_MSG(p_offset != 0, false, "Invalid PCK data. Note that loading files with a non-zero offset isn't supported with directories.");
 	if (p_path != "res://") {
 		return false;
 	}
 	add_directory(p_path, p_replace_files);
 	return true;
 }
 Ref<FileAccess> PackedSourceDirectory::get_file(const String &p_path, PackedData::PackedFile *p_file) {
 	Ref<FileAccess> ret = FileAccess::create_for_path(p_path);
 	ret->reopen(p_path, FileAccess::READ);
 	return ret;
 }
 void PackedSourceDirectory::add_directory(const String &p_path, bool p_replace_files) {
 	Ref<DirAccess> da = DirAccess::open(p_path);
 	if (da.is_null()) {
 		return;
 	}
 	da->set_include_hidden(true);
 	for (const String &file_name : da->get_files()) {
 		String file_path = p_path.path_join(file_name);
 		uint8_t md5[16] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
 		PackedData::get_singleton()->add_path(p_path, file_path, 0, 0, md5, this, p_replace_files, false);
 	}
 	for (const String &sub_dir_name : da->get_directories()) {
 		String sub_dir_path = p_path.path_join(sub_dir_name);
 		add_directory(sub_dir_path, p_replace_files);
 	}
 }
 //////////////////////////////////////////////////////////////////
 Error FileAccessPack::open_internal(const String &p_path, int p_mode_flags) {
 	ERR_PRINT("Can't open pack-referenced file.");
 	return ERR_UNAVAILABLE;
@ -313,17 +411,6 @@ bool FileAccessPack::eof_reached() const {
 	return eof;
 }
 uint8_t FileAccessPack::get_8() const {
 	ERR_FAIL_COND_V_MSG(f.is_null(), 0, "File must be opened before use.");
 	if (pos >= pf.size) {
 		eof = true;
 		return 0;
 	}
 	pos++;
 	return f->get_8();
 }
 uint64_t FileAccessPack::get_buffer(uint8_t *p_dst, uint64_t p_length) const {
 	ERR_FAIL_COND_V_MSG(f.is_null(), -1, "File must be opened before use.");
 	ERR_FAIL_COND_V(!p_dst && p_length > 0, -1);
@ -366,12 +453,8 @@ void FileAccessPack::flush() {
 	ERR_FAIL();
 }
-void FileAccessPack::store_8(uint8_t p_dest) {
+bool FileAccessPack::store_buffer(const uint8_t *p_src, uint64_t p_length) {
-	ERR_FAIL();
+	ERR_FAIL_V(false);
 }
 void FileAccessPack::store_buffer(const uint8_t *p_src, uint64_t p_length) {
 	ERR_FAIL();
 }
 bool FileAccessPack::file_exists(const String &p_name) {
@ -385,7 +468,7 @@ void FileAccessPack::close() {
 FileAccessPack::FileAccessPack(const String &p_path, const PackedData::PackedFile &p_file) :
 		pf(p_file),
 		f(FileAccess::open(pf.pack, FileAccess::READ)) {
-	ERR_FAIL_COND_MSG(f.is_null(), "Can't open pack-referenced file '" + String(pf.pack) + "'.");
+	ERR_FAIL_COND_MSG(f.is_null(), vformat("Can't open pack-referenced file '%s'.", String(pf.pack)));
 	f->seek(pf.offset);
 	off = pf.offset;
@ -393,7 +476,7 @@ FileAccessPack::FileAccessPack(const String &p_path, const PackedData::PackedFil
 	if (pf.encrypted) {
 		Ref<FileAccessEncrypted> fae;
 		fae.instantiate();
-		ERR_FAIL_COND_MSG(fae.is_null(), "Can't open encrypted pack-referenced file '" + String(pf.pack) + "'.");
+		ERR_FAIL_COND_MSG(fae.is_null(), vformat("Can't open encrypted pack-referenced file '%s'.", String(pf.pack)));
 		Vector<uint8_t> key;
 		key.resize(32);
@ -402,7 +485,7 @@ FileAccessPack::FileAccessPack(const String &p_path, const PackedData::PackedFil
 		}
 		Error err = fae->open_and_parse(f, key, FileAccessEncrypted::MODE_READ, false);
-		ERR_FAIL_COND_MSG(err, "Can't open encrypted pack-referenced file '" + String(pf.pack) + "'.");
+		ERR_FAIL_COND_MSG(err, vformat("Can't open encrypted pack-referenced file '%s'.", String(pf.pack)));
 		f = fae;
 		off = 0;
 	}
@ -543,8 +626,6 @@ String DirAccessPack::get_current_dir(bool p_include_drive) const {
 }
 bool DirAccessPack::file_exists(String p_file) {
 	p_file = fix_path(p_file);
 	PackedData::PackedDir *pd = _find_dir(p_file.get_base_dir());
 	if (!pd) {
 		return false;
@ -553,8 +634,6 @@ bool DirAccessPack::file_exists(String p_file) {
 }
 bool DirAccessPack::dir_exists(String p_dir) {
 	p_dir = fix_path(p_dir);
 	return _find_dir(p_dir) != nullptr;
 }
--- a/engine/core/io/file_access_pack.h
+++ b/engine/core/io/file_access_pack.h
@ -36,7 +36,6 @@
 #include "core/string/print_string.h"
 #include "core/templates/hash_set.h"
 #include "core/templates/list.h"
 #include "core/templates/rb_map.h"
 // Godot's packed file magic header ("GDPC" in ASCII).
 #define PACK_HEADER_MAGIC 0x43504447
@ -49,7 +48,8 @@ enum PackFlags {
 };
 enum PackFileFlags {
-	PACK_FILE_ENCRYPTED = 1 << 0
+	PACK_FILE_ENCRYPTED = 1 << 0,
 	PACK_FILE_REMOVAL = 1 << 1,
 };
 class PackSource;
@ -107,10 +107,14 @@ private:
 	bool disabled = false;
 	void _free_packed_dirs(PackedDir *p_dir);
 	void _get_file_paths(PackedDir *p_dir, const String &p_parent_dir, HashSet<String> &r_paths) const;
 public:
 	void add_pack_source(PackSource *p_source);
 	void add_path(const String &p_pkg_path, const String &p_path, uint64_t p_ofs, uint64_t p_size, const uint8_t *p_md5, PackSource *p_src, bool p_replace_files, bool p_encrypted = false); // for PackSource
 	void remove_path(const String &p_path);
 	uint8_t *get_file_hash(const String &p_path);
 	HashSet<String> get_file_paths() const;
 	void set_disabled(bool p_disabled) { disabled = p_disabled; }
 	_FORCE_INLINE_ bool is_disabled() const { return disabled; }
@ -118,6 +122,8 @@ public:
 	static PackedData *get_singleton() { return singleton; }
 	Error add_pack(const String &p_path, bool p_replace_files, uint64_t p_offset);
 	void clear();
 	_FORCE_INLINE_ Ref<FileAccess> try_open_path(const String &p_path);
 	_FORCE_INLINE_ bool has_path(const String &p_path);
@ -141,6 +147,14 @@ public:
 	virtual Ref<FileAccess> get_file(const String &p_path, PackedData::PackedFile *p_file) override;
 };
 class PackedSourceDirectory : public PackSource {
 	void add_directory(const String &p_path, bool p_replace_files);
 public:
 	virtual bool try_open_pack(const String &p_path, bool p_replace_files, uint64_t p_offset) override;
 	virtual Ref<FileAccess> get_file(const String &p_path, PackedData::PackedFile *p_file) override;
 };
 class FileAccessPack : public FileAccess {
 	PackedData::PackedFile pf;
@ -169,8 +183,6 @@ public:
 	virtual bool eof_reached() const override;
 	virtual uint8_t get_8() const override;
 	virtual uint64_t get_buffer(uint8_t *p_dst, uint64_t p_length) const override;
 	virtual void set_big_endian(bool p_big_endian) override;
@ -179,9 +191,7 @@ public:
 	virtual Error resize(int64_t p_length) override { return ERR_UNAVAILABLE; }
 	virtual void flush() override;
-	virtual void store_8(uint8_t p_dest) override;
+	virtual bool store_buffer(const uint8_t *p_src, uint64_t p_length) override;
 	virtual void store_buffer(const uint8_t *p_src, uint64_t p_length) override;
 	virtual bool file_exists(const String &p_name) override;
@ -191,21 +201,18 @@ public:
 };
 Ref<FileAccess> PackedData::try_open_path(const String &p_path) {
-	String simplified_path = p_path.simplify_path();
+	String simplified_path = p_path.simplify_path().trim_prefix("res://");
 	PathMD5 pmd5(simplified_path.md5_buffer());
 	HashMap<PathMD5, PackedFile, PathMD5>::Iterator E = files.find(pmd5);
 	if (!E) {
-		return nullptr; //not found
+		return nullptr; // Not found.
 	}
 	if (E->value.offset == 0) {
 		return nullptr; //was erased
 	}
 	return E->value.src->get_file(p_path, &E->value);
 }
 bool PackedData::has_path(const String &p_path) {
-	return files.has(PathMD5(p_path.simplify_path().md5_buffer()));
+	return files.has(PathMD5(p_path.simplify_path().trim_prefix("res://").md5_buffer()));
 }
 bool PackedData::has_directory(const String &p_path) {
--- a/engine/core/io/file_access_zip.cpp
+++ b/engine/core/io/file_access_zip.cpp
@ -116,7 +116,7 @@ void ZipArchive::close_handle(unzFile p_file) const {
 }
 unzFile ZipArchive::get_file_handle(const String &p_file) const {
-	ERR_FAIL_COND_V_MSG(!file_exists(p_file), nullptr, "File '" + p_file + " doesn't exist.");
+	ERR_FAIL_COND_V_MSG(!file_exists(p_file), nullptr, vformat("File '%s' doesn't exist.", p_file));
 	File file = files[p_file];
 	zlib_filefunc_def io;
@ -136,7 +136,7 @@ unzFile ZipArchive::get_file_handle(const String &p_file) const {
 	io.free_mem = godot_free;
 	unzFile pkg = unzOpen2(packages[file.package].filename.utf8().get_data(), &io);
-	ERR_FAIL_NULL_V_MSG(pkg, nullptr, "Cannot open file '" + packages[file.package].filename + "'.");
+	ERR_FAIL_NULL_V_MSG(pkg, nullptr, vformat("Cannot open file '%s'.", packages[file.package].filename));
 	int unz_err = unzGoToFilePos(pkg, &file.file_pos);
 	if (unz_err != UNZ_OK || unzOpenCurrentFile(pkg) != UNZ_OK) {
 		unzClose(pkg);
@ -291,12 +291,6 @@ bool FileAccessZip::eof_reached() const {
 	return at_eof;
 }
 uint8_t FileAccessZip::get_8() const {
 	uint8_t ret = 0;
 	get_buffer(&ret, 1);
 	return ret;
 }
 uint64_t FileAccessZip::get_buffer(uint8_t *p_dst, uint64_t p_length) const {
 	ERR_FAIL_COND_V(!p_dst && p_length > 0, -1);
 	ERR_FAIL_NULL_V(zfile, -1);
@ -328,8 +322,8 @@ void FileAccessZip::flush() {
 	ERR_FAIL();
 }
-void FileAccessZip::store_8(uint8_t p_dest) {
+bool FileAccessZip::store_buffer(const uint8_t *p_src, uint64_t p_length) {
-	ERR_FAIL();
+	ERR_FAIL_V(false);
 }
 bool FileAccessZip::file_exists(const String &p_name) {
--- a/engine/core/io/file_access_zip.h
+++ b/engine/core/io/file_access_zip.h
@ -34,12 +34,9 @@
 #ifdef MINIZIP_ENABLED
 #include "core/io/file_access_pack.h"
 #include "core/templates/rb_map.h"
 #include "thirdparty/minizip/unzip.h"
 #include <stdlib.h>
 class ZipArchive : public PackSource {
 public:
 	struct File {
@ -95,14 +92,13 @@ public:
 	virtual bool eof_reached() const override; ///< reading passed EOF
 	virtual uint8_t get_8() const override; ///< get a byte
 	virtual uint64_t get_buffer(uint8_t *p_dst, uint64_t p_length) const override;
 	virtual Error get_error() const override; ///< get last error
 	virtual Error resize(int64_t p_length) override { return ERR_UNAVAILABLE; }
 	virtual void flush() override;
-	virtual void store_8(uint8_t p_dest) override; ///< store a byte
+	virtual bool store_buffer(const uint8_t *p_src, uint64_t p_length) override;
 	virtual bool file_exists(const String &p_name) override; ///< return true if a file exists
--- a/engine/core/io/http_client.cpp
+++ b/engine/core/io/http_client.cpp
@ -42,9 +42,9 @@ const char *HTTPClient::_methods[METHOD_MAX] = {
 	"PATCH"
 };
-HTTPClient *HTTPClient::create() {
+HTTPClient *HTTPClient::create(bool p_notify_postinitialize) {
 	if (_create) {
-		return _create();
+		return _create(p_notify_postinitialize);
 	}
 	return nullptr;
 }
@ -100,9 +100,9 @@ String HTTPClient::query_string_from_dict(const Dictionary &p_dict) {
 Error HTTPClient::verify_headers(const Vector<String> &p_headers) {
 	for (int i = 0; i < p_headers.size(); i++) {
 		String sanitized = p_headers[i].strip_edges();
-		ERR_FAIL_COND_V_MSG(sanitized.is_empty(), ERR_INVALID_PARAMETER, "Invalid HTTP header at index " + itos(i) + ": empty.");
+		ERR_FAIL_COND_V_MSG(sanitized.is_empty(), ERR_INVALID_PARAMETER, vformat("Invalid HTTP header at index %d: empty.", i));
-		ERR_FAIL_COND_V_MSG(sanitized.find(":") < 1, ERR_INVALID_PARAMETER,
+		ERR_FAIL_COND_V_MSG(sanitized.find_char(':') < 1, ERR_INVALID_PARAMETER,
-				"Invalid HTTP header at index " + itos(i) + ": String must contain header-value pair, delimited by ':', but was: " + p_headers[i]);
+				vformat("Invalid HTTP header at index %d: String must contain header-value pair, delimited by ':', but was: '%s'.", i, p_headers[i]));
 	}
 	return OK;
@ -113,7 +113,7 @@ Dictionary HTTPClient::_get_response_headers_as_dictionary() {
 	get_response_headers(&rh);
 	Dictionary ret;
 	for (const String &s : rh) {
-		int sp = s.find(":");
+		int sp = s.find_char(':');
 		if (sp == -1) {
 			continue;
 		}
--- a/engine/core/io/http_client.h
+++ b/engine/core/io/http_client.h
@ -158,12 +158,12 @@ protected:
 	Error _request_raw(Method p_method, const String &p_url, const Vector<String> &p_headers, const Vector<uint8_t> &p_body);
 	Error _request(Method p_method, const String &p_url, const Vector<String> &p_headers, const String &p_body = String());
-	static HTTPClient *(*_create)();
+	static HTTPClient *(*_create)(bool p_notify_postinitialize);
 	static void _bind_methods();
 public:
-	static HTTPClient *create();
+	static HTTPClient *create(bool p_notify_postinitialize = true);
 	String query_string_from_dict(const Dictionary &p_dict);
 	Error verify_headers(const Vector<String> &p_headers);
--- a/engine/core/io/http_client_tcp.cpp
+++ b/engine/core/io/http_client_tcp.cpp
@ -35,8 +35,8 @@
 #include "core/io/stream_peer_tls.h"
 #include "core/version.h"
-HTTPClient *HTTPClientTCP::_create_func() {
+HTTPClient *HTTPClientTCP::_create_func(bool p_notify_postinitialize) {
-	return memnew(HTTPClientTCP);
+	return static_cast<HTTPClient *>(ClassDB::creator<HTTPClientTCP>(p_notify_postinitialize));
 }
 Error HTTPClientTCP::connect_to_host(const String &p_host, int p_port, Ref<TLSOptions> p_options) {
@ -484,7 +484,7 @@ Error HTTPClientTCP::poll() {
 					// End of response, parse.
 					response_str.push_back(0);
 					String response;
-					response.parse_utf8((const char *)response_str.ptr());
+					response.parse_utf8((const char *)response_str.ptr(), response_str.size());
 					Vector<String> responses = response.split("\n");
 					body_size = -1;
 					chunked = false;
@ -508,11 +508,11 @@ Error HTTPClientTCP::poll() {
 							continue;
 						}
 						if (s.begins_with("content-length:")) {
-							body_size = s.substr(s.find(":") + 1, s.length()).strip_edges().to_int();
+							body_size = s.substr(s.find_char(':') + 1, s.length()).strip_edges().to_int();
 							body_left = body_size;
 						} else if (s.begins_with("transfer-encoding:")) {
-							String encoding = header.substr(header.find(":") + 1, header.length()).strip_edges();
+							String encoding = header.substr(header.find_char(':') + 1, header.length()).strip_edges();
 							if (encoding == "chunked") {
 								chunked = true;
 							}
@ -662,15 +662,16 @@ PackedByteArray HTTPClientTCP::read_response_body_chunk() {
 				chunk_left -= rec;
 				if (chunk_left == 0) {
-					if (chunk[chunk.size() - 2] != '\r' || chunk[chunk.size() - 1] != '\n') {
+					const int chunk_size = chunk.size();
 					if (chunk[chunk_size - 2] != '\r' || chunk[chunk_size - 1] != '\n') {
 						ERR_PRINT("HTTP Invalid chunk terminator (not \\r\\n)");
 						status = STATUS_CONNECTION_ERROR;
 						break;
 					}
-					ret.resize(chunk.size() - 2);
+					ret.resize(chunk_size - 2);
 					uint8_t *w = ret.ptrw();
-					memcpy(w, chunk.ptr(), chunk.size() - 2);
+					memcpy(w, chunk.ptr(), chunk_size - 2);
 					chunk.clear();
 				}
@ -792,6 +793,6 @@ HTTPClientTCP::HTTPClientTCP() {
 	request_buffer.instantiate();
 }
-HTTPClient *(*HTTPClient::_create)() = HTTPClientTCP::_create_func;
+HTTPClient *(*HTTPClient::_create)(bool p_notify_postinitialize) = HTTPClientTCP::_create_func;
 #endif // WEB_ENABLED
--- a/engine/core/io/http_client_tcp.h
+++ b/engine/core/io/http_client_tcp.h
@ -76,7 +76,7 @@ private:
 	Error _get_http_data(uint8_t *p_buffer, int p_bytes, int &r_received);
 public:
-	static HTTPClient *_create_func();
+	static HTTPClient *_create_func(bool p_notify_postinitialize);
 	Error request(Method p_method, const String &p_url, const Vector<String> &p_headers, const uint8_t *p_body, int p_body_size) override;
--- a/engine/core/io/image.cpp
+++ b/engine/core/io/image.cpp
--- a/engine/core/io/image.h
+++ b/engine/core/io/image.h
@ -33,7 +33,6 @@
 #include "core/io/resource.h"
 #include "core/math/color.h"
 #include "core/math/rect2.h"
 /**
 * Image storage class. This is used to store an image in user memory, as well as
@ -43,12 +42,17 @@
 class Image;
 // Function pointer prototypes.
 typedef Error (*SavePNGFunc)(const String &p_path, const Ref<Image> &p_img);
 typedef Vector<uint8_t> (*SavePNGBufferFunc)(const Ref<Image> &p_img);
 typedef Error (*SaveJPGFunc)(const String &p_path, const Ref<Image> &p_img, float p_quality);
 typedef Vector<uint8_t> (*SaveJPGBufferFunc)(const Ref<Image> &p_img, float p_quality);
 typedef Ref<Image> (*ImageMemLoadFunc)(const uint8_t *p_png, int p_size);
 typedef Ref<Image> (*ScalableImageMemLoadFunc)(const uint8_t *p_data, int p_size, float p_scale);
 typedef Error (*SaveWebPFunc)(const String &p_path, const Ref<Image> &p_img, const bool p_lossy, const float p_quality);
 typedef Vector<uint8_t> (*SaveWebPBufferFunc)(const Ref<Image> &p_img, const bool p_lossy, const float p_quality);
@ -59,57 +63,48 @@ class Image : public Resource {
 	GDCLASS(Image, Resource);
 public:
 	static SavePNGFunc save_png_func;
 	static SaveJPGFunc save_jpg_func;
 	static SaveEXRFunc save_exr_func;
 	static SavePNGBufferFunc save_png_buffer_func;
 	static SaveEXRBufferFunc save_exr_buffer_func;
 	static SaveJPGBufferFunc save_jpg_buffer_func;
 	static SaveWebPFunc save_webp_func;
 	static SaveWebPBufferFunc save_webp_buffer_func;
 	enum {
-		MAX_WIDTH = (1 << 24), // force a limit somehow
+		MAX_WIDTH = (1 << 24), // Force a limit somehow.
-		MAX_HEIGHT = (1 << 24), // force a limit somehow
+		MAX_HEIGHT = (1 << 24), // Force a limit somehow.
-		MAX_PIXELS = 268435456
+		MAX_PIXELS = 268435456 // 16384 ^ 2
 	};
-	enum Format {
+	enum Format : int32_t {
-		FORMAT_L8, //luminance
+		FORMAT_L8, // Luminance
-		FORMAT_LA8, //luminance-alpha
+		FORMAT_LA8, // Luminance-Alpha
 		FORMAT_R8,
 		FORMAT_RG8,
 		FORMAT_RGB8,
 		FORMAT_RGBA8,
 		FORMAT_RGBA4444,
 		FORMAT_RGB565,
-		FORMAT_RF, //float
+		FORMAT_RF, // Float
 		FORMAT_RGF,
 		FORMAT_RGBF,
 		FORMAT_RGBAF,
-		FORMAT_RH, //half float
+		FORMAT_RH, // Half
 		FORMAT_RGH,
 		FORMAT_RGBH,
 		FORMAT_RGBAH,
 		FORMAT_RGBE9995,
-		FORMAT_DXT1, //s3tc bc1
+		FORMAT_DXT1, // BC1
-		FORMAT_DXT3, //bc2
+		FORMAT_DXT3, // BC2
-		FORMAT_DXT5, //bc3
+		FORMAT_DXT5, // BC3
-		FORMAT_RGTC_R,
+		FORMAT_RGTC_R, // BC4
-		FORMAT_RGTC_RG,
+		FORMAT_RGTC_RG, // BC5
-		FORMAT_BPTC_RGBA, //btpc bc7
+		FORMAT_BPTC_RGBA, // BC7
-		FORMAT_BPTC_RGBF, //float bc6h
+		FORMAT_BPTC_RGBF, // BC6 Signed
-		FORMAT_BPTC_RGBFU, //unsigned float bc6hu
+		FORMAT_BPTC_RGBFU, // BC6 Unsigned
-		FORMAT_ETC, //etc1
+		FORMAT_ETC, // ETC1
-		FORMAT_ETC2_R11, //etc2
+		FORMAT_ETC2_R11,
-		FORMAT_ETC2_R11S, //signed, NOT srgb.
+		FORMAT_ETC2_R11S, // Signed, NOT srgb.
 		FORMAT_ETC2_RG11,
-		FORMAT_ETC2_RG11S,
+		FORMAT_ETC2_RG11S, // Signed, NOT srgb.
 		FORMAT_ETC2_RGB8,
 		FORMAT_ETC2_RGBA8,
 		FORMAT_ETC2_RGB8A1,
-		FORMAT_ETC2_RA_AS_RG, //used to make basis universal happy
+		FORMAT_ETC2_RA_AS_RG, // ETC2 RGBA with a RA-RG swizzle for normal maps.
-		FORMAT_DXT5_RA_AS_RG, //used to make basis universal happy
+		FORMAT_DXT5_RA_AS_RG, // BC3 with a RA-RG swizzle for normal maps.
 		FORMAT_ASTC_4x4,
 		FORMAT_ASTC_4x4_HDR,
 		FORMAT_ASTC_8x8,
@ -118,17 +113,18 @@ public:
 	};
 	static const char *format_names[FORMAT_MAX];
 	enum Interpolation {
 		INTERPOLATE_NEAREST,
 		INTERPOLATE_BILINEAR,
 		INTERPOLATE_CUBIC,
 		INTERPOLATE_TRILINEAR,
 		INTERPOLATE_LANCZOS,
-		/* INTERPOLATE_TRICUBIC, */
+		// INTERPOLATE_TRICUBIC,
-		/* INTERPOLATE GAUSS */
+		// INTERPOLATE_GAUSS
 	};
-	//this is used for compression
+	// Used for obtaining optimal compression quality.
 	enum UsedChannels {
 		USED_CHANNELS_L,
 		USED_CHANNELS_LA,
@ -137,13 +133,66 @@ public:
 		USED_CHANNELS_RGB,
 		USED_CHANNELS_RGBA,
 	};
 	//some functions provided by something else
 	// ASTC supports block formats other than 4x4.
 	enum ASTCFormat {
 		ASTC_FORMAT_4x4,
 		ASTC_FORMAT_8x8,
 	};
 	enum RoughnessChannel {
 		ROUGHNESS_CHANNEL_R,
 		ROUGHNESS_CHANNEL_G,
 		ROUGHNESS_CHANNEL_B,
 		ROUGHNESS_CHANNEL_A,
 		ROUGHNESS_CHANNEL_L,
 	};
 	enum Image3DValidateError {
 		VALIDATE_3D_OK,
 		VALIDATE_3D_ERR_IMAGE_EMPTY,
 		VALIDATE_3D_ERR_MISSING_IMAGES,
 		VALIDATE_3D_ERR_EXTRA_IMAGES,
 		VALIDATE_3D_ERR_IMAGE_SIZE_MISMATCH,
 		VALIDATE_3D_ERR_IMAGE_FORMAT_MISMATCH,
 		VALIDATE_3D_ERR_IMAGE_HAS_MIPMAPS,
 	};
 	enum CompressMode {
 		COMPRESS_S3TC,
 		COMPRESS_ETC,
 		COMPRESS_ETC2,
 		COMPRESS_BPTC,
 		COMPRESS_ASTC,
 		COMPRESS_MAX,
 	};
 	enum CompressSource {
 		COMPRESS_SOURCE_GENERIC,
 		COMPRESS_SOURCE_SRGB,
 		COMPRESS_SOURCE_NORMAL,
 		COMPRESS_SOURCE_MAX,
 	};
 	enum AlphaMode {
 		ALPHA_NONE,
 		ALPHA_BIT,
 		ALPHA_BLEND
 	};
 	// External saver function pointers.
 	static SavePNGFunc save_png_func;
 	static SaveJPGFunc save_jpg_func;
 	static SaveEXRFunc save_exr_func;
 	static SaveWebPFunc save_webp_func;
 	static SavePNGBufferFunc save_png_buffer_func;
 	static SaveEXRBufferFunc save_exr_buffer_func;
 	static SaveJPGBufferFunc save_jpg_buffer_func;
 	static SaveWebPBufferFunc save_webp_buffer_func;
 	// External loader function pointers.
 	static ImageMemLoadFunc _png_mem_loader_func;
 	static ImageMemLoadFunc _png_mem_unpacker_func;
 	static ImageMemLoadFunc _jpg_mem_loader_func;
@ -153,30 +202,37 @@ public:
 	static ScalableImageMemLoadFunc _svg_scalable_mem_loader_func;
 	static ImageMemLoadFunc _ktx_mem_loader_func;
 	// External VRAM compression function pointers.
 	static void (*_image_compress_bc_func)(Image *, UsedChannels p_channels);
 	static void (*_image_compress_bptc_func)(Image *, UsedChannels p_channels);
 	static void (*_image_compress_etc1_func)(Image *);
 	static void (*_image_compress_etc2_func)(Image *, UsedChannels p_channels);
 	static void (*_image_compress_astc_func)(Image *, ASTCFormat p_format);
 	static Error (*_image_compress_bptc_rd_func)(Image *, UsedChannels p_channels);
 	static Error (*_image_compress_bc_rd_func)(Image *, UsedChannels p_channels);
 	// External VRAM decompression function pointers.
 	static void (*_image_decompress_bc)(Image *);
 	static void (*_image_decompress_bptc)(Image *);
 	static void (*_image_decompress_etc1)(Image *);
 	static void (*_image_decompress_etc2)(Image *);
 	static void (*_image_decompress_astc)(Image *);
 	// External packer function pointers.
 	static Vector<uint8_t> (*webp_lossy_packer)(const Ref<Image> &p_image, float p_quality);
 	static Vector<uint8_t> (*webp_lossless_packer)(const Ref<Image> &p_image);
 	static Ref<Image> (*webp_unpacker)(const Vector<uint8_t> &p_buffer);
 	static Vector<uint8_t> (*png_packer)(const Ref<Image> &p_image);
 	static Ref<Image> (*png_unpacker)(const Vector<uint8_t> &p_buffer);
 	static Vector<uint8_t> (*basis_universal_packer)(const Ref<Image> &p_image, UsedChannels p_channels);
 	static Ref<Image> (*webp_unpacker)(const Vector<uint8_t> &p_buffer);
 	static Ref<Image> (*png_unpacker)(const Vector<uint8_t> &p_buffer);
 	static Ref<Image> (*basis_universal_unpacker)(const Vector<uint8_t> &p_buffer);
 	static Ref<Image> (*basis_universal_unpacker_ptr)(const uint8_t *p_data, int p_size);
 	_FORCE_INLINE_ Color _get_color_at_ofs(const uint8_t *ptr, uint32_t ofs) const;
 	_FORCE_INLINE_ void _set_color_at_ofs(uint8_t *ptr, uint32_t ofs, const Color &p_color);
 protected:
 	static void _bind_methods();
@ -187,15 +243,12 @@ private:
 	int height = 0;
 	bool mipmaps = false;
-	void _copy_internals_from(const Image &p_image) {
+	void _copy_internals_from(const Image &p_image);
 		format = p_image.format;
 		width = p_image.width;
 		height = p_image.height;
 		mipmaps = p_image.mipmaps;
 		data = p_image.data;
 	}
-	_FORCE_INLINE_ void _get_mipmap_offset_and_size(int p_mipmap, int64_t &r_offset, int &r_width, int &r_height) const; //get where the mipmap begins in data
+	_FORCE_INLINE_ Color _get_color_at_ofs(const uint8_t *ptr, uint32_t ofs) const;
 	_FORCE_INLINE_ void _set_color_at_ofs(uint8_t *ptr, uint32_t ofs, const Color &p_color);
 	_FORCE_INLINE_ void _get_mipmap_offset_and_size(int p_mipmap, int64_t &r_offset, int &r_width, int &r_height) const; // Get where the mipmap begins in data.
 	static int64_t _get_dst_image_size(int p_width, int p_height, Format p_format, int &r_mipmaps, int p_mipmaps = -1, int *r_mm_width = nullptr, int *r_mm_height = nullptr);
 	bool _can_modify(Format p_format) const;
@ -212,6 +265,8 @@ private:
 	Error _load_from_buffer(const Vector<uint8_t> &p_array, ImageMemLoadFunc p_loader);
 	_FORCE_INLINE_ void _generate_mipmap_from_format(Image::Format p_format, const uint8_t *p_src, uint8_t *p_dst, uint32_t p_width, uint32_t p_height, bool p_renormalize = false);
 	static void average_4_uint8(uint8_t &p_out, const uint8_t &p_a, const uint8_t &p_b, const uint8_t &p_c, const uint8_t &p_d);
 	static void average_4_float(float &p_out, const float &p_a, const float &p_b, const float &p_c, const float &p_d);
 	static void average_4_half(uint16_t &p_out, const uint16_t &p_a, const uint16_t &p_b, const uint16_t &p_c, const uint16_t &p_d);
@ -222,52 +277,32 @@ private:
 	static void renormalize_rgbe9995(uint32_t *p_rgb);
 public:
-	int get_width() const; ///< Get image width
+	int get_width() const;
-	int get_height() const; ///< Get image height
+	int get_height() const;
 	Size2i get_size() const;
 	bool has_mipmaps() const;
 	int get_mipmap_count() const;
-	/**
+	// Convert the image to another format, conversion only to raw byte format.
 	 * Convert the image to another format, conversion only to raw byte format
 	 */
 	void convert(Format p_new_format);
 	/**
 	 * Get the current image format.
 	 */
 	Format get_format() const;
-	/**
+	// Get where the mipmap begins in data.
 	 * Get where the mipmap begins in data.
 	 */
 	int64_t get_mipmap_offset(int p_mipmap) const;
 	void get_mipmap_offset_and_size(int p_mipmap, int64_t &r_ofs, int64_t &r_size) const;
 	void get_mipmap_offset_size_and_dimensions(int p_mipmap, int64_t &r_ofs, int64_t &r_size, int &w, int &h) const;
 	enum Image3DValidateError {
 		VALIDATE_3D_OK,
 		VALIDATE_3D_ERR_IMAGE_EMPTY,
 		VALIDATE_3D_ERR_MISSING_IMAGES,
 		VALIDATE_3D_ERR_EXTRA_IMAGES,
 		VALIDATE_3D_ERR_IMAGE_SIZE_MISMATCH,
 		VALIDATE_3D_ERR_IMAGE_FORMAT_MISMATCH,
 		VALIDATE_3D_ERR_IMAGE_HAS_MIPMAPS,
 	};
 	static Image3DValidateError validate_3d_image(Format p_format, int p_width, int p_height, int p_depth, bool p_mipmaps, const Vector<Ref<Image>> &p_images);
 	static String get_3d_image_validation_error_text(Image3DValidateError p_error);
-	/**
+	// Resize the image, using the preferred interpolation method.
 	 * Resize the image, using the preferred interpolation method.
 	 */
 	void resize_to_po2(bool p_square = false, Interpolation p_interpolation = INTERPOLATE_BILINEAR);
 	void resize(int p_width, int p_height, Interpolation p_interpolation = INTERPOLATE_BILINEAR);
 	void shrink_x2();
 	bool is_size_po2() const;
-	/**
+
-	 * Crop the image to a specific size, if larger, then the image is filled by black
+	// Crop the image to a specific size, if larger, then the image is filled by black.
 	 */
 	void crop_from_point(int p_x, int p_y, int p_width, int p_height);
 	void crop(int p_width, int p_height);
@ -277,34 +312,20 @@ public:
 	void flip_x();
 	void flip_y();
-	/**
+	// Generate a mipmap chain of an image (creates an image 1/4 the size, with averaging of 4->1).
 	 * Generate a mipmap to an image (creates an image 1/4 the size, with averaging of 4->1)
 	 */
 	Error generate_mipmaps(bool p_renormalize = false);
 	enum RoughnessChannel {
 		ROUGHNESS_CHANNEL_R,
 		ROUGHNESS_CHANNEL_G,
 		ROUGHNESS_CHANNEL_B,
 		ROUGHNESS_CHANNEL_A,
 		ROUGHNESS_CHANNEL_L,
 	};
 	Error generate_mipmap_roughness(RoughnessChannel p_roughness_channel, const Ref<Image> &p_normal_map);
 	void clear_mipmaps();
-	void normalize(); //for normal maps
+	void normalize();
-	/**
+	// Creates new internal image data of a given size and format. Current image will be lost.
 	 * Creates new internal image data of a given size and format. Current image will be lost.
 	 */
 	void initialize_data(int p_width, int p_height, bool p_use_mipmaps, Format p_format);
 	void initialize_data(int p_width, int p_height, bool p_use_mipmaps, Format p_format, const Vector<uint8_t> &p_data);
 	void initialize_data(const char **p_xpm);
-	/**
+	// Returns true when the image is empty (0,0) in size.
 	 * returns true when the image is empty (0,0) in size
 	 */
 	bool is_empty() const;
 	Vector<uint8_t> get_data() const;
@ -324,27 +345,14 @@ public:
 	static Ref<Image> create_from_data(int p_width, int p_height, bool p_use_mipmaps, Format p_format, const Vector<uint8_t> &p_data);
 	void set_data(int p_width, int p_height, bool p_use_mipmaps, Format p_format, const Vector<uint8_t> &p_data);
-	/**
+	Image() = default; // Create an empty image.
-	 * create an empty image
+	Image(int p_width, int p_height, bool p_use_mipmaps, Format p_format); // Create an empty image of a specific size and format.
-	 */
+	Image(int p_width, int p_height, bool p_mipmaps, Format p_format, const Vector<uint8_t> &p_data); // Import an image of a specific size and format from a byte vector.
-	Image() {}
+	Image(const uint8_t *p_mem_png_jpg, int p_len = -1); // Import either a png or jpg from a pointer.
-	/**
+	Image(const char **p_xpm); // Import an XPM image.
 	 * create an empty image of a specific size and format
 	 */
 	Image(int p_width, int p_height, bool p_use_mipmaps, Format p_format);
 	/**
 	 * import an image of a specific size and format from a pointer
 	 */
 	Image(int p_width, int p_height, bool p_mipmaps, Format p_format, const Vector<uint8_t> &p_data);
 	~Image() {}
 	enum AlphaMode {
 		ALPHA_NONE,
 		ALPHA_BIT,
 		ALPHA_BLEND
 	};
 	AlphaMode detect_alpha() const;
 	bool is_invisible() const;
@ -359,21 +367,6 @@ public:
 	static int64_t get_image_mipmap_offset(int p_width, int p_height, Format p_format, int p_mipmap);
 	static int64_t get_image_mipmap_offset_and_dimensions(int p_width, int p_height, Format p_format, int p_mipmap, int &r_w, int &r_h);
 	enum CompressMode {
 		COMPRESS_S3TC,
 		COMPRESS_ETC,
 		COMPRESS_ETC2,
 		COMPRESS_BPTC,
 		COMPRESS_ASTC,
 		COMPRESS_MAX,
 	};
 	enum CompressSource {
 		COMPRESS_SOURCE_GENERIC,
 		COMPRESS_SOURCE_SRGB,
 		COMPRESS_SOURCE_NORMAL,
 		COMPRESS_SOURCE_MAX,
 	};
 	Error compress(CompressMode p_mode, CompressSource p_source = COMPRESS_SOURCE_GENERIC, ASTCFormat p_astc_format = ASTC_FORMAT_4x4);
 	Error compress_from_channels(CompressMode p_mode, UsedChannels p_channels, ASTCFormat p_astc_format = ASTC_FORMAT_4x4);
 	Error decompress();
@ -383,11 +376,14 @@ public:
 	void fix_alpha_edges();
 	void premultiply_alpha();
 	void srgb_to_linear();
 	void linear_to_srgb();
 	void normal_map_to_xy();
 	Ref<Image> rgbe_to_srgb();
 	Ref<Image> get_image_from_mipmap(int p_mipmap) const;
 	void bump_map_to_normal_map(float bump_scale = 1.0);
 	bool detect_signed(bool p_include_mips = true) const;
 	void blit_rect(const Ref<Image> &p_src, const Rect2i &p_src_rect, const Point2i &p_dest);
 	void blit_rect_mask(const Ref<Image> &p_src, const Ref<Image> &p_mask, const Rect2i &p_src_rect, const Point2i &p_dest);
 	void blend_rect(const Ref<Image> &p_src, const Rect2i &p_src_rect, const Point2i &p_dest);
@ -398,9 +394,8 @@ public:
 	Rect2i get_used_rect() const;
 	Ref<Image> get_region(const Rect2i &p_area) const;
 	static void set_compress_bc_func(void (*p_compress_func)(Image *, UsedChannels));
 	static void set_compress_bptc_func(void (*p_compress_func)(Image *, UsedChannels));
 	static String get_format_name(Format p_format);
 	static uint32_t get_format_component_mask(Format p_format);
 	Error load_png_from_buffer(const Vector<uint8_t> &p_array);
 	Error load_jpg_from_buffer(const Vector<uint8_t> &p_array);
@ -416,9 +411,6 @@ public:
 	void convert_ra_rgba8_to_rg();
 	void convert_rgba8_to_bgra8();
 	Image(const uint8_t *p_mem_png_jpg, int p_len = -1);
 	Image(const char **p_xpm);
 	virtual Ref<Resource> duplicate(bool p_subresources = false) const override;
 	UsedChannels detect_used_channels(CompressSource p_source = COMPRESS_SOURCE_GENERIC) const;
@ -437,14 +429,7 @@ public:
 	void set_as_black();
-	void copy_internals_from(const Ref<Image> &p_image) {
+	void copy_internals_from(const Ref<Image> &p_image);
 		ERR_FAIL_COND_MSG(p_image.is_null(), "Cannot copy image internals: invalid Image object.");
 		format = p_image->format;
 		width = p_image->width;
 		height = p_image->height;
 		mipmaps = p_image->mipmaps;
 		data = p_image->data;
 	}
 	Dictionary compute_image_metrics(const Ref<Image> p_compared_image, bool p_luma_metric = true);
 };
--- a/engine/core/io/image_loader.cpp
+++ b/engine/core/io/image_loader.cpp
@ -30,8 +30,6 @@
 #include "image_loader.h"
 #include "core/string/print_string.h"
 void ImageFormatLoader::_bind_methods() {
 	BIND_BITFIELD_FLAG(FLAG_NONE);
 	BIND_BITFIELD_FLAG(FLAG_FORCE_LINEAR);
@ -82,15 +80,16 @@ void ImageFormatLoaderExtension::_bind_methods() {
 Error ImageLoader::load_image(const String &p_file, Ref<Image> p_image, Ref<FileAccess> p_custom, BitField<ImageFormatLoader::LoaderFlags> p_flags, float p_scale) {
 	ERR_FAIL_COND_V_MSG(p_image.is_null(), ERR_INVALID_PARAMETER, "Can't load an image: invalid Image object.");
 	const String file = ResourceUID::ensure_path(p_file);
 	Ref<FileAccess> f = p_custom;
 	if (f.is_null()) {
 		Error err;
-		f = FileAccess::open(p_file, FileAccess::READ, &err);
+		f = FileAccess::open(file, FileAccess::READ, &err);
-		ERR_FAIL_COND_V_MSG(f.is_null(), err, "Error opening file '" + p_file + "'.");
+		ERR_FAIL_COND_V_MSG(f.is_null(), err, vformat("Error opening file '%s'.", file));
 	}
-	String extension = p_file.get_extension();
+	String extension = file.get_extension();
 	for (int i = 0; i < loader.size(); i++) {
 		if (!loader[i]->recognize(extension)) {
@ -98,7 +97,7 @@ Error ImageLoader::load_image(const String &p_file, Ref<Image> p_image, Ref<File
 		}
 		Error err = loader.write[i]->load_image(p_image, f, p_flags, p_scale);
 		if (err != OK) {
-			ERR_PRINT("Error loading image: " + p_file);
+			ERR_PRINT(vformat("Error loading image: '%s'.", file));
 		}
 		if (err != ERR_FILE_UNRECOGNIZED) {
--- a/Show more
+++ b/Show more