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/ServerChunkCache.h | 101 ++++++++++++++++++++++++++++++++++++
 1 file changed, 101 insertions(+)
 create mode 100644 Minecraft.Client/ServerChunkCache.h

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

diff --git a/Minecraft.Client/ServerChunkCache.h b/Minecraft.Client/ServerChunkCache.h
new file mode 100644
index 00000000..058cecc4
--- /dev/null
+++ b/Minecraft.Client/ServerChunkCache.h
@@ -0,0 +1,101 @@
+#pragma once
+#include "..\Minecraft.World\net.minecraft.world.level.h"
+#include "..\Minecraft.World\File.h"
+#include "..\Minecraft.World\net.minecraft.world.level.storage.h"
+#include "..\Minecraft.World\JavaIntHash.h"
+#include "..\Minecraft.World\RandomLevelSource.h"
+#include "..\Minecraft.World\C4JThread.h"
+using namespace std;
+class ServerLevel;
+
+class ServerChunkCache : public ChunkSource
+{
+
+private:
+//	unordered_set<int,IntKeyHash, IntKeyEq> toDrop;
+private:
+	LevelChunk *emptyChunk;
+    ChunkSource *source;
+    ChunkStorage *storage;
+public:
+	bool autoCreate;
+private:
+	LevelChunk **cache;
+    vector<LevelChunk *> m_loadedChunkList;
+    ServerLevel *level;
+
+#ifdef _LARGE_WORLDS
+	deque<LevelChunk *> m_toDrop;
+	LevelChunk **m_unloadedCache;
+#endif
+
+	// 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;
+
+public:
+	ServerChunkCache(ServerLevel *level, ChunkStorage *storage, ChunkSource *source);
+	virtual ~ServerChunkCache();
+    virtual bool hasChunk(int x, int z);
+	vector<LevelChunk *> *getLoadedChunkList();
+    void drop(int x, int z);
+	void dropAll();
+    virtual LevelChunk *create(int x, int z);
+	LevelChunk *create(int x, int z, bool asyncPostProcess );	// 4J added
+    virtual LevelChunk *getChunk(int x, int z);
+#ifdef _LARGE_WORLDS	
+	LevelChunk *getChunkLoadedOrUnloaded(int x, int z);		// 4J added
+#endif
+	virtual LevelChunk **getCache() { return cache; }		// 4J added
+
+	// 4J-JEV Added; Remove chunk from the toDrop queue.
+#ifdef _LARGE_WORLDS	
+	void dontDrop(int x, int z); 
+#endif
+
+private:
+	 LevelChunk *load(int x, int z);
+    void saveEntities(LevelChunk *levelChunk);
+    void save(LevelChunk *levelChunk);
+
+	void updatePostProcessFlag(short flag, int x, int z, int xo, int zo, LevelChunk *lc);	// 4J added
+	void updatePostProcessFlags(int x, int z);								// 4J added
+	void flagPostProcessComplete(short flag, int x, int z);					// 4J added
+public:
+	virtual void postProcess(ChunkSource *parent, int x, int z);
+
+
+private:
+#ifdef _LARGE_WORLDS
+	static const int MAX_SAVES = 20;
+#else
+	// 4J Stu - Was 24, but lowering it drastically so that we can trickle save chunks
+	static const int MAX_SAVES = 1;
+#endif
+
+public:
+	virtual bool saveAllEntities();
+	virtual bool save(bool force, ProgressListener *progressListener);
+    virtual bool tick();
+    virtual bool shouldSave();
+    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);
+
+private:
+	typedef struct _SaveThreadData
+	{
+		ServerChunkCache *cache;
+		LevelChunk *chunkToSave;
+		bool saveEntities;
+		bool useSharedThreadStorage;
+		C4JThread::Event *notificationEvent;
+		C4JThread::Event *wakeEvent; // This is a handle to the one fired by the producer thread
+	} SaveThreadData;
+
+public:
+	static int runSaveThreadProc(LPVOID lpParam);
+};
-- 
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