the whole game

src/network/packet/ChunkDataPacket.h

@@ -0,0 +1,77 @@
+#ifndef NET_MINECRAFT_NETWORK_PACKET__ChunkDataPacket_H__
+#define NET_MINECRAFT_NETWORK_PACKET__ChunkDataPacket_H__
+
+#include "../Packet.h"
+#include "../../world/level/chunk/LevelChunk.h"
+
+class ChunkDataPacket : public Packet
+{
+public:
+
+	int x, z;
+	RakNet::BitStream chunkData;
+	LevelChunk* chunk;
+
+	ChunkDataPacket()
+	{
+	}
+
+	ChunkDataPacket(int x, int z, LevelChunk* chunk)
+	:	x(x),
+		z(z),
+		chunk(chunk)
+	{
+	}
+
+	void write(RakNet::BitStream* bitStream)
+	{
+		bitStream->Write((RakNet::MessageID)(ID_USER_PACKET_ENUM + PACKET_CHUNKDATA));
+
+		bitStream->Write(x);
+		bitStream->Write(z);
+
+		unsigned char* blockIds = chunk->getBlockData();
+		DataLayer& blockData = chunk->data;
+
+		const int setSize = LEVEL_HEIGHT / 8;
+		const int setShift = 4; // power of LEVEL_HEIGHT / 8
+
+		chunkData.Reset();
+		for (int i = 0; i < CHUNK_COLUMNS; i++)
+		{
+			unsigned char updateBits = chunk->updateMap[i];
+			chunkData.Write(updateBits);
+
+			if (updateBits > 0)
+			{
+				int colDataPosition = (i % CHUNK_WIDTH) << 11 | (i / CHUNK_WIDTH) << 7;
+
+				for (int set = 0; set < 8; set++)
+				{
+					if ((updateBits & (1 << set)) != 0) 
+					{
+						chunkData.Write((const char*)(&blockIds[colDataPosition + (set << setShift)]), setSize);
+						// block data is only 4 bits per block
+						chunkData.Write((const char*)(&blockData.data[(colDataPosition + (set << setShift)) >> 1]), setSize >> 1);
+					}
+				}
+			}
+		}
+
+		bitStream->Write(chunkData);
+	}
+
+	void read(RakNet::BitStream* bitStream)
+	{
+		bitStream->Read(x);
+		bitStream->Read(z);
+		bitStream->Read(chunkData);
+	}
+
+	void handle(const RakNet::RakNetGUID& source, NetEventCallback* callback)
+	{
+		callback->handle(source, (ChunkDataPacket*)this);
+	}
+};
+
+#endif /*NET_MINECRAFT_NETWORK_PACKET__ChunkDataPacket_H__*/