fahhh

2026-09-05 05:07:48 +00:00 · 2025-10-28 14:05:46 -04:00
parent 977f1ff4b8
commit c93494f795
452 changed files with 47860 additions and 152 deletions
@@ -0,0 +1,101 @@
+#pragma once
+/* Copyright 2003-2011 ROBLOX Corporation, All Rights Reserved */
+
+#include <vector>
+#include "Util/G3DCore.h"
+#include "V8World/Primitive.h"
+#include "Voxel/Util.h"
+#include "Voxel/CellChangeListener.h"
+#include "Voxel/ChunkMap.h"
+#include "Voxel2/GridListener.h"
+
+namespace RBX {
+namespace Voxel {
+	class Grid;
+}
+
+namespace Voxel2 {
+	class Grid;
+}
+
+class TerrainPartitionMega:
+    public Voxel::CellChangeListener
+{
+public:
+    TerrainPartitionMega(Voxel::Grid* voxelGrid);
+    ~TerrainPartitionMega();
+
+    void findCellsTouchingExtents(const Extents& extents, std::vector<Vector3int16>* found) const;
+
+private:
+    struct ChunkData
+    {
+        // filled[y][z][x] represents a sub-chunk of 4x2x4 cells, where 1 cell = 1 bit
+        unsigned int count;
+        unsigned int filled[Voxel::kY_CHUNK_SIZE / 2][Voxel::kXZ_CHUNK_SIZE / 4][Voxel::kXZ_CHUNK_SIZE / 4];
+
+        ChunkData(): count(0)
+        {
+            memset(filled, 0, sizeof(filled));
+        }
+    };
+
+    Voxel::ChunkMap<ChunkData> chunks;
+	Voxel::Grid* voxelGrid;
+
+	/*override*/ virtual void terrainCellChanged(const Voxel::CellChangeInfo& info);
+
+    void findCellsInRegion(const SpatialRegion::Id& region, const ChunkData& chunk, const Vector3int16& minOffset, const Vector3int16& maxOffset, std::vector<Vector3int16>* found) const;
+};
+
+class TerrainPartitionSmooth
+{
+public:
+    static const int kChunkSizeLog2 = 3;
+	static const int kChunkSize = 1 << kChunkSizeLog2;
+
+    TerrainPartitionSmooth(Voxel2::Grid* grid);
+    ~TerrainPartitionSmooth();
+
+    struct ChunkResult
+	{
+		Vector3int32 id;
+        bool touchesSolid;
+        bool touchesWater;
+	};
+
+	void findChunksTouchingExtents(const Extents& extents, std::vector<ChunkResult>* found) const;
+
+    void updateChunk(const Vector3int32& id);
+
+private:
+    struct ChunkSlice
+	{
+        // 8x8 bits for each slice
+        uint64_t solid;
+        uint64_t water;
+	};
+
+    struct ChunkData
+    {
+		ChunkSlice slices[kChunkSize];
+
+        ChunkData()
+        {
+            memset(slices, 0, sizeof(slices));
+        }
+    };
+
+	typedef boost::unordered_map<Vector3int32, ChunkData> ChunkMap;
+	
+	ChunkMap chunks;
+	Voxel2::Grid* grid;
+
+	uint64_t masksHor[kChunkSize][kChunkSize];
+	uint64_t masksVer[kChunkSize][kChunkSize];
+
+	void fillChunkIfTouchingExtents(const Vector3int32& chunkId, const ChunkData& chunkData, const Vector3int32& minPos, const Vector3int32& maxPos, std::vector<ChunkResult>* found) const;
+};
+
+} // namespace
+