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.World/Packet.h | 113 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 113 insertions(+)
 create mode 100644 Minecraft.World/Packet.h

(limited to 'Minecraft.World/Packet.h')

diff --git a/Minecraft.World/Packet.h b/Minecraft.World/Packet.h
new file mode 100644
index 00000000..60410df3
--- /dev/null
+++ b/Minecraft.World/Packet.h
@@ -0,0 +1,113 @@
+#pragma once
+using namespace std;
+
+class Packet;
+class PacketListener;
+class DataInputStream;
+class DataOutputStream;
+
+#define PACKET_ENABLE_STAT_TRACKING 0
+
+class Packet;
+
+typedef shared_ptr<Packet> (*packetCreateFn)();
+
+class Packet
+{
+public:
+	class PacketStatistics 
+	{
+	private:
+		int count;
+		int totalSize;
+
+		// 4J Added
+		__int64 countSamples[512];
+		__int64 sizeSamples[512];
+		int samplesPos;
+		__int64 firstSampleTime;
+
+
+	public:
+		const int id;
+
+	public:
+		PacketStatistics(int id) : id( id ), count( 0 ), totalSize( 0 ), samplesPos( 0 ), firstSampleTime( 0 ) { countSamples[0] = 0; sizeSamples[0] = 0; }
+		void addPacket(int bytes);
+		int getCount();
+		double getAverageSize();
+
+		// 4J Added
+		void renderStats();
+		__int64 getCountSample(int samplePos);
+		wstring getLegendString();
+	};
+
+	// 4J JEV, replaces the static blocks.
+	static void staticCtor();
+
+public:
+	static unordered_map<int, packetCreateFn> idToCreateMap; // IntHashMap in 1.8.2 ... needed? // Made public in 1.0.1
+
+	static unordered_set<int> clientReceivedPackets;
+	static unordered_set<int> serverReceivedPackets;
+	static unordered_set<int> sendToAnyClientPackets;
+
+	// 4J Stu - Added the sendToAnyClient param so we can limit some packets to be only sent to one player on a system
+	// 4J Stu - Added renderStats param for use in debugging
+	static void map(int id, bool receiveOnClient, bool receiveOnServer, bool sendToAnyClient, bool renderStats, const type_info& clazz, packetCreateFn );
+
+public:
+	const __int64 createTime;
+
+	Packet();
+
+	static shared_ptr<Packet> getPacket(int id);
+
+	// 4J Added
+	static bool canSendToAnyClient(shared_ptr<Packet> packet);
+
+	static void writeBytes(DataOutputStream *dataoutputstream, byteArray bytes);
+	static byteArray readBytes(DataInputStream *datainputstream);
+
+	virtual int getId() = 0;
+
+	bool shouldDelay;
+
+private:
+	// 4J Added to track stats for packets that are going out via QNet
+	static unordered_map<int, PacketStatistics *> outgoingStatistics; // IntHashMap in 1.8.2 ... needed?
+	static vector<PacketStatistics *> renderableStats;
+	static int renderPos;
+public:
+	static void recordOutgoingPacket(shared_ptr<Packet> packet);
+	static void renderPacketStats(int id);
+	static void renderAllPacketStats();
+	static void renderAllPacketStatsKey();
+	static __int64 getIndexedStatValue(unsigned int samplePos, unsigned int renderableId);
+
+private :
+	static unordered_map<int, PacketStatistics *> statistics;
+	//static int nextPrint;
+
+public:
+	static shared_ptr<Packet> readPacket(DataInputStream *dis, bool isServer);
+	static void writePacket(shared_ptr<Packet> packet, DataOutputStream *dos);
+	static void writeUtf(const wstring& value, DataOutputStream *dos);
+	static wstring readUtf(DataInputStream *dis, int maxLength);
+	virtual void read(DataInputStream *dis) = 0; // throws IOException = 0; TODO 4J JEV, should this declare a throws?
+	virtual void write(DataOutputStream *dos) = 0; // throws IOException = 0; TODO 4J JEV, should this declare a throws?
+	virtual void handle(PacketListener *listener) = 0;
+	virtual int getEstimatedSize() = 0;
+	virtual bool canBeInvalidated();
+	virtual bool isInvalidatedBy(shared_ptr<Packet> packet);
+	virtual bool isAync();
+
+	// 4J Stu - Brought these functions forward for enchanting/game rules
+	static shared_ptr<ItemInstance> readItem(DataInputStream *dis);
+	static void writeItem(shared_ptr<ItemInstance> item, DataOutputStream *dos);
+	static CompoundTag *readNbt(DataInputStream *dis);
+
+protected:
+	static void writeNbt(CompoundTag *tag, DataOutputStream *dos);
+};
\ No newline at end of file
-- 
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