86 lines
2.7 KiB
C++
86 lines
2.7 KiB
C++
#pragma once
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#include "core/math/color.h"
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#include "core/object/object.h"
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#include "core/os/semaphore.h"
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#include "core/os/thread.h"
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#include "core/variant/callable.h"
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#include "scene/main/node.h"
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#include "scene/resources/gradient.h"
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#include "scene/resources/mesh.h"
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#include "scene/resources/surface_tool.h"
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#include "terrain_editor/terrain_chunk.h"
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#include "terrain_editor/terrain_primitive.h"
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class TerrainMeshGenerator : public Node {
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GDCLASS(TerrainMeshGenerator, Node);
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struct TerrainMeshTask {
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Ref<ArrayMesh> mesh;
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Rect2 area;
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size_t side_points;
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Ref<SurfaceTool> out_surface;
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Callable callback;
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};
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static void _bind_methods();
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void enter_tree();
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void process();
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void on_configuration_changed();
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protected:
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void _notification(int what);
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void rebuild_chunks();
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static void background_generation_thread(void *user);
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Color color_at_height(float height) const;
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float evaluate_point(Vector2 at) const;
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void generate_grid(Rect2 area, Ref<SurfaceTool> mesh, size_t side_points);
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public:
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void push_task(Rect2 area, Ref<ArrayMesh> mesh, size_t side_points, Callable callback = Callable());
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void add_primitive(Ref<TerrainPrimitive> primitive);
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void insert_primitive(Ref<TerrainPrimitive> primitive, int idx);
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void remove_primitive(Ref<TerrainPrimitive> primitive);
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void set_primitives(Array array);
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Array get_primitives() const;
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void set_vertex_color_gradient(Ref<Gradient> gradient);
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Ref<Gradient> get_vertex_color_gradient() const;
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void set_color_gradient_start_height(float value);
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float get_color_gradient_start_height() const;
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void set_color_gradient_end_height(float value);
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float get_color_gradient_end_height() const;
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void set_chunk_count(int num);
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int get_chunk_count() const;
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void set_chunk_scene(Ref<PackedScene> scene);
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Ref<PackedScene> get_chunk_scene() const;
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private:
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// main thread exclusive data
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Ref<PackedScene> chunk_scene{};
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Vector<TerrainChunk *> chunks{};
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// worker thread owned data
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Mutex settings_lock{}; // needs to be locked to modify any of the below, worker thread locks while working
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Array primitives_buffer{}; // main thread buffer for primitives
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Vector<Ref<TerrainPrimitive>> primitives{}; // work thread buffer for primitives
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Ref<Gradient> vertex_color_gradient{};
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float color_gradient_start_height{ 0.f };
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float color_gradient_end_height{ 10.f };
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int chunks_per_side{ 10 };
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Thread thread{};
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Mutex input_lock{};
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bool end_thread{ false };
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Vector<TerrainMeshTask> input_queue{};
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Semaphore work_signal{};
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Mutex output_lock{};
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Vector<TerrainMeshTask> output_queue{};
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private:
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Callable generation_changed{ callable_mp(this, &self_type::on_configuration_changed) };
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public:
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static String const sig_primitives_changed;
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static String const sig_primitive_list_changed;
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};
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