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/PlayerChunkMap.h | 105 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 105 insertions(+)
 create mode 100644 Minecraft.Client/PlayerChunkMap.h

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

diff --git a/Minecraft.Client/PlayerChunkMap.h b/Minecraft.Client/PlayerChunkMap.h
new file mode 100644
index 00000000..61324272
--- /dev/null
+++ b/Minecraft.Client/PlayerChunkMap.h
@@ -0,0 +1,105 @@
+#pragma once
+#include "..\Minecraft.World\JavaIntHash.h"
+#include "..\Minecraft.World\ChunkPos.h"
+class ServerPlayer;
+class ServerLevel;
+class MinecraftServer;
+class Packet;
+class TileEntity;
+using namespace std;
+
+class PlayerChunkMap
+{
+public:
+#ifdef _LARGE_WORLDS
+	static const int MAX_VIEW_DISTANCE = 30;
+#else
+	static const int MAX_VIEW_DISTANCE = 15;
+#endif
+	static const int MIN_VIEW_DISTANCE = 3;
+	static const int MAX_CHANGES_BEFORE_RESEND = 10;
+	static const int MIN_TICKS_BETWEEN_REGION_UPDATE = 10;
+
+	// 4J - added
+	class PlayerChunkAddRequest
+	{
+	public:
+		int x,z;
+		shared_ptr<ServerPlayer> player;
+		PlayerChunkAddRequest(int x, int z, shared_ptr<ServerPlayer> player ) : x(x), z(z), player(player) {}
+	};
+
+    class PlayerChunk
+	{
+		friend class PlayerChunkMap;
+	private:
+		PlayerChunkMap *parent;			// 4J added
+		vector<shared_ptr<ServerPlayer> > players;
+        //int x, z;
+        ChunkPos pos;
+
+        shortArray changedTiles;
+        int changes;
+        int xChangeMin, xChangeMax;
+        int yChangeMin, yChangeMax;
+        int zChangeMin, zChangeMax;
+		int ticksToNextRegionUpdate;	// 4J added
+		bool prioritised;				// 4J added
+
+	public:
+		PlayerChunk(int x, int z, PlayerChunkMap *pcm);
+		~PlayerChunk();
+
+		// 4J Added sendPacket param so we can aggregate the initial send into one much smaller packet
+        void add(shared_ptr<ServerPlayer> player, bool sendPacket = true);
+        void remove(shared_ptr<ServerPlayer> player);
+        void tileChanged(int x, int y, int z);
+		void prioritiseTileChanges();	// 4J added
+        void broadcast(shared_ptr<Packet> packet);
+        bool broadcastChanges(bool allowRegionUpdate);		// 4J - added parm
+
+	private:
+		void broadcast(shared_ptr<TileEntity> te);
+    };
+
+public:
+	vector<shared_ptr<ServerPlayer> > players;
+	void flagEntitiesToBeRemoved(unsigned int *flags, bool *removedFound);		// 4J added
+private:
+	unordered_map<__int64,PlayerChunk *,LongKeyHash,LongKeyEq> chunks;	// 4J - was LongHashMap
+    vector<PlayerChunk *> changedChunks;
+	vector<PlayerChunkAddRequest> addRequests; // 4J added
+	void tickAddRequests(shared_ptr<ServerPlayer> player);	// 4J added
+
+    ServerLevel *level;
+    int radius;
+	int dimension;
+
+public:
+	PlayerChunkMap(ServerLevel *level, int dimension, int radius);
+	~PlayerChunkMap();
+    ServerLevel *getLevel();
+    void tick();
+	bool hasChunk(int x, int z);
+private:
+	PlayerChunk *getChunk(int x, int z, bool create);
+	void getChunkAndAddPlayer(int x, int z, shared_ptr<ServerPlayer> player);	// 4J added
+	void getChunkAndRemovePlayer(int x, int z, shared_ptr<ServerPlayer> player);	// 4J added
+public:
+	void broadcastTileUpdate(shared_ptr<Packet> packet, int x, int y, int z);
+    void tileChanged(int x, int y, int z);
+	bool isTrackingTile(int x, int y, int z);			// 4J added
+	void prioritiseTileChanges(int x, int y, int z);	// 4J added
+    void add(shared_ptr<ServerPlayer> player);
+    void remove(shared_ptr<ServerPlayer> player);
+private:
+	bool chunkInRange(int x, int z, int xc, int zc);
+public:
+	void move(shared_ptr<ServerPlayer> player);
+    int getMaxRange();
+	bool isPlayerIn(shared_ptr<ServerPlayer> player, int xChunk, int zChunk);
+	static int convertChunkRangeToBlock(int radius);
+
+	// AP added for Vita
+	void setRadius(int newRadius);
+};
-- 
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