tweak: performance and scale

modules/terrain_editor/terrain_chunk.cpp

@@ -2,7 +2,9 @@
 #include "core/config/engine.h"
 #include "macros.h"
 #include "scene/3d/camera_3d.h"
+#include "scene/3d/physics/static_body_3d.h"
 #include "scene/main/viewport.h"
+#include "scene/resources/mesh.h"
 #include "terrain_editor/terrain_mesh_generator.h"
 
 void TerrainChunk::_bind_methods() {
@@ -17,15 +19,19 @@ void TerrainChunk::ready() {
 		print_error(vformat("Chunk %s ready without generator.", get_path()));
 		return;
 	}
-	process_lod();
 	on_terrain_changed();
+	process_lod();
 }
 
 void TerrainChunk::on_terrain_changed() {
 	if (this->generator) {
 		Vector3 const position{ get_global_position() };
-		this->meshes.resize_zeroed(5);
+		this->meshes.resize_zeroed(3);
 		size_t lod{ 0 };
+		if (this->collisions) {
+			this->collisions->queue_free();
+			this->collisions = nullptr;
+		}
 		for (MeshStatus &status : this->meshes) {
 			if (!status.mesh.is_valid()) {
 				status.mesh.instantiate();
@@ -39,7 +45,23 @@ void TerrainChunk::on_terrain_changed() {
 }
 
 void TerrainChunk::lod_generated(size_t lod) {
-	this->meshes.set(lod, MeshStatus{ this->meshes[lod].mesh, false });
+	//if (this->collisions && lod <= this->collisions_lod && (lod == 0 || lod == (this->meshes.size() - 1))) {
+#if 0
+	if (this->collisions && lod == this->meshes.size() - 1) {
+		this->collisions->queue_free();
+		this->collisions = nullptr;
+	}
+	if (!this->collisions) {
+		this->set_mesh(this->meshes[lod].mesh);
+		//static Ref<MeshConvexDecompositionSettings> settings{};
+		if ((this->collisions = create_multiple_convex_collisions_node())) {
+			add_child(this->collisions);
+		}
+		this->collisions_lod = lod;
+	}
+#endif
+	this->meshes.set(lod, { this->meshes[lod].mesh, false });
+	process_lod();
 }
 
 void TerrainChunk::process_lod() {
@@ -47,10 +69,11 @@ void TerrainChunk::process_lod() {
 	if (is_ready() && this->meshes.size() > 0) {
 		Vector3 position{ get_global_position() };
 		Vector3 camera{ get_viewport()->get_camera_3d()->get_global_position() };
-		position.y = camera.y = 0;
+		Vector3 diff{ (position - camera).abs() };
-		float distance{ camera.distance_to(position) };
+		float distance{ (diff.x > diff.z ? diff.z : diff.x) - this->size };
-		size_t lod{ size_t(Math::floor(distance / (this->lod4_distance / 5.f))) };
+		distance = distance > 0.f ? distance : 0.f;
-		result = lod < 5 ? lod : 4;
+		size_t lod{ size_t(Math::floor(distance / (this->lod_end_distance / this->meshes.size()))) };
+		result = lod < this->meshes.size() ? lod : (this->meshes.size() - 1);
 		while (this->meshes[result].dirty && result < (this->meshes.size() - 1)) {
 			result++;
 		}

modules/terrain_editor/terrain_chunk.h

@@ -1,6 +1,5 @@
 #pragma once
 
-#include "core/templates/pair.h"
 #include "core/templates/vector.h"
 #include "scene/3d/mesh_instance_3d.h"
 class TerrainMeshGenerator;
@@ -27,9 +26,11 @@ public:
 	int get_lod0_detail() const;
 
 private:
+	Node *collisions{ nullptr };
+	size_t collisions_lod{ 0 };
 	Vector<MeshStatus> meshes{};
-	TerrainMeshGenerator *generator{ nullptr };
 	int lod0_detail{ 200 };
-	float lod4_distance{ 1500 };
+	float lod_end_distance{ 1000 };
 	float size{ 200 };
+	TerrainMeshGenerator *generator{ nullptr };
 };

project/objects/terrain_chunk.tscn

@@ -4,3 +4,5 @@
 
 [node name="TerrainChunk" type="TerrainChunk"]
 material_override = ExtResource("1_6vjd7")
+size = 30.0
+lod0_detail = 30

project/scenes/editor.tscn

@@ -1,31 +1,48 @@
-[gd_scene load_steps=13 format=3 uid="uid://xm383pc5pcnn"]
+[gd_scene load_steps=18 format=3 uid="uid://xm383pc5pcnn"]
 
 [ext_resource type="PackedScene" uid="uid://cnux2fqne284i" path="res://objects/primitive_nodes/point_primitive_node.tscn" id="1_b1cmn"]
 [ext_resource type="PackedScene" uid="uid://wkqhvjnxs2mx" path="res://objects/terrain_chunk.tscn" id="1_pxqd5"]
 
 [sub_resource type="PointPrimitive" id="PointPrimitive_pxqd5"]
-slope = -0.585
+slope = -0.7
-height = 200.0
+height = 0.0
+
+[sub_resource type="PointPrimitive" id="PointPrimitive_ba0ut"]
+center = Vector2(50, 0)
+slope = -0.7
 
 [sub_resource type="FastNoiseLite" id="FastNoiseLite_pxqd5"]
+frequency = 0.02
 fractal_octaves = 3
 
 [sub_resource type="NoisePrimitive" id="NoisePrimitive_ba0ut"]
-blend_range = 20.0
+blend_range = 5.0
 noise = SubResource("FastNoiseLite_pxqd5")
-noise_scale = 3.0
+noise_amplitude = 20.0
-noise_amplitude = 100.0
 
 [sub_resource type="FastNoiseLite" id="FastNoiseLite_b1cmn"]
+noise_type = 0
+frequency = 0.03
 fractal_type = 2
-fractal_gain = 0.7
 metadata/_preview_in_3d_space_ = true
 
 [sub_resource type="NoisePrimitive" id="NoisePrimitive_pxqd5"]
 blend_range = 10.0
 noise = SubResource("FastNoiseLite_b1cmn")
-noise_scale = 5.0
+noise_amplitude = 5.0
-noise_amplitude = 20.0
+
+[sub_resource type="FastNoiseLite" id="FastNoiseLite_ba0ut"]
+fractal_type = 2
+fractal_gain = 1.0
+fractal_weighted_strength = 0.58
+
+[sub_resource type="NoisePrimitive" id="NoisePrimitive_q68jb"]
+blend_mode = 1
+noise = SubResource("FastNoiseLite_ba0ut")
+
+[sub_resource type="PlanePrimitive" id="PlanePrimitive_pxqd5"]
+blend_range = 10.0
+baseline = -1.0
 
 [sub_resource type="Gradient" id="Gradient_b1cmn"]
 interpolation_mode = 2
@@ -61,10 +78,10 @@ script/source = "extends Camera3D
 
 var pan_speed = .001
 var rotate_speed := .0015
-var zoom_speed := 30.0
+var zoom_speed := 5.0
 var rotating := false
 var panning := false
-var distance := 707
+var distance := 50
 var pivot := Vector3.ZERO
 
 func _ready():
@@ -101,13 +118,14 @@ func _unhandled_input(event: InputEvent) -> void:
 		global_position = (global_position - pivot).normalized() * distance + pivot
 "
 
+[sub_resource type="CylinderMesh" id="CylinderMesh_pxqd5"]
+
 [node name="Node3D" type="Node3D"]
 
 [node name="TerrainMeshEditor" type="TerrainMeshEditor" parent="."]
-primitives = [SubResource("PointPrimitive_pxqd5"), SubResource("NoisePrimitive_ba0ut"), SubResource("NoisePrimitive_pxqd5")]
+primitives = [SubResource("PointPrimitive_pxqd5"), SubResource("PointPrimitive_ba0ut"), SubResource("NoisePrimitive_ba0ut"), SubResource("NoisePrimitive_pxqd5"), SubResource("NoisePrimitive_q68jb"), SubResource("PlanePrimitive_pxqd5")]
 vertex_color_gradient = SubResource("Gradient_b1cmn")
-color_gradient_end_height = 200.0
+color_gradient_end_height = 100.0
-chunk_count = 5
 chunk_scene = ExtResource("1_pxqd5")
 point_primitive_object = ExtResource("1_b1cmn")
 
@@ -127,4 +145,8 @@ fov = 57.3
 far = 2000.0
 script = SubResource("GDScript_b1cmn")
 
+[node name="MeshInstance3D" type="MeshInstance3D" parent="."]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 7, 0)
+mesh = SubResource("CylinderMesh_pxqd5")
+
 [connection signal="primitives_changed" from="TerrainMeshEditor" to="TerrainMeshEditor" method="_on_primitives_changed"]