From b691c43c44ff180d10e7d4a9afc83b98551ff586 Mon Sep 17 00:00:00 2001
From: daoge_cmd <3523206925@qq.com>
Date: Sun, 1 Mar 2026 12:16:08 +0800
Subject: Initial commit

---
 Minecraft.Client/MultiPlayerChunkCache.h | 47 ++++++++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)
 create mode 100644 Minecraft.Client/MultiPlayerChunkCache.h

(limited to 'Minecraft.Client/MultiPlayerChunkCache.h')

diff --git a/Minecraft.Client/MultiPlayerChunkCache.h b/Minecraft.Client/MultiPlayerChunkCache.h
new file mode 100644
index 00000000..8fc427a6
--- /dev/null
+++ b/Minecraft.Client/MultiPlayerChunkCache.h
@@ -0,0 +1,47 @@
+#pragma once
+#include "..\Minecraft.World\net.minecraft.world.level.h"
+#include "..\Minecraft.World\net.minecraft.world.level.chunk.h"
+#include "..\Minecraft.World\RandomLevelSource.h"
+
+using namespace std;
+class ServerChunkCache;
+
+// 4J - various alterations here to make this thread safe, and operate as a fixed sized cache
+class MultiPlayerChunkCache : public ChunkSource
+{
+	friend class LevelRenderer;
+private:
+	LevelChunk *emptyChunk;
+	LevelChunk *waterChunk;
+
+	vector<LevelChunk *> loadedChunkList;
+
+	LevelChunk **cache;
+	// 4J - added for multithreaded support
+	CRITICAL_SECTION m_csLoadCreate;
+	// 4J - size of cache is defined by size of one side - must be even
+	int XZSIZE;
+	int XZOFFSET;
+	bool *hasData;
+
+    Level *level;
+
+public:
+	MultiPlayerChunkCache(Level *level);
+	~MultiPlayerChunkCache();
+    virtual bool hasChunk(int x, int z);
+	virtual bool reallyHasChunk(int x, int z);
+    virtual void drop(int x, int z);
+    virtual LevelChunk *create(int x, int z);
+    virtual LevelChunk *getChunk(int x, int z);
+    virtual bool save(bool force, ProgressListener *progressListener);
+    virtual bool tick();
+    virtual bool shouldSave();
+    virtual void postProcess(ChunkSource *parent, int x, int z);
+    virtual wstring gatherStats();
+	virtual vector<Biome::MobSpawnerData *> *getMobsAt(MobCategory *mobCategory, int x, int y, int z);
+	virtual TilePos *findNearestMapFeature(Level *level, const wstring &featureName, int x, int y, int z);
+	virtual void dataReceived(int x, int z);	// 4J added
+
+	virtual LevelChunk **getCache() { return cache; }		// 4J added
+};
\ No newline at end of file
-- 
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