path: root/source/packets/cPacket_MapChunk.cpp

#include "Globals.h"  // NOTE: MSVC stupidness requires this to be the same across all modules

#include "cPacket_MapChunk.h"
#include "../cChunk.h"

#include "zlib.h"





cPacket_MapChunk::~cPacket_MapChunk()
{
	delete [] m_CompressedData;
}





cPacket_MapChunk::cPacket_MapChunk(cChunk * a_Chunk)
{
	ASSERT(a_Chunk->IsValid());
	m_PacketID = E_MAP_CHUNK;

#if (MINECRAFT_1_2_2 == 1 )

	// ... 
	m_PosX = a_Chunk->GetPosX(); // Chunk coordinates now, instead of block coordinates
	m_PosZ = a_Chunk->GetPosZ();

	m_bContiguous = false;
	m_BitMap1 = 0;
	m_BitMap2 = 0;

	m_UnusedInt = 0;

	unsigned int DataSize = 16 * (4096 + 2048 + 2048 + 2048);
	char* AllData = new char[ DataSize ];
	memset( AllData, 0, DataSize );

	unsigned int iterator = 0;
	for( int i = 0; i < 8; ++i ) // Old world is only 8*16 high (should be 16*16)
	{
		m_BitMap1 |= (1 << i); // This tells what chunks are sent. Use this to NOT send air only chunks (right now everything is sent)
		for( int y = 0; y < 16; ++y ) for( int z = 0; z < 16; ++z ) for( int x = 0; x < 16; ++x )
		{
			AllData[iterator] = a_Chunk->GetBlock( x, y+i*16, z );
			++iterator;
		}
	}
	//Send block metadata
	for( int i = 0; i < 8; ++i )
	{
		for( int y = 0; y < 16; ++y ) for( int z = 0; z < 16; ++z )
		{
			for( int x = 0; x < 8; ++x )
			{
				AllData[iterator] = a_Chunk->GetLight( a_Chunk->pGetMeta(), x*2+0, y+i*16, z ) | a_Chunk->GetLight( a_Chunk->pGetMeta(), x*2+1, y+i*16, z ) << 4;
				++iterator;
			}
		}
	}
	//Send block light
	for( int i = 0; i < 8; ++i )
	{
		for( int y = 0; y < 16; ++y ) for( int z = 0; z < 16; ++z )
		{
			for( int x = 0; x < 8; ++x )
			{
				AllData[iterator] = a_Chunk->GetLight( a_Chunk->pGetLight(), x*2+0, y+i*16, z ) | a_Chunk->GetLight( a_Chunk->pGetLight(), x*2+1, y+i*16, z ) << 4;
				++iterator;
			}
		}
	}
	//Send sky light
	for( int i = 0; i < 8; ++i )
	{
		for( int y = 0; y < 16; ++y ) for( int z = 0; z < 16; ++z )
		{
			for( int x = 0; x < 8; ++x )
			{
				AllData[iterator] = a_Chunk->GetLight( a_Chunk->pGetSkyLight(), x*2+0, y+i*16, z ) | a_Chunk->GetLight( a_Chunk->pGetSkyLight(), x*2+1, y+i*16, z ) << 4;
				++iterator;
			}
		}
	}

	uLongf CompressedSize = compressBound( DataSize );
	char * CompressedBlockData = new char[CompressedSize];

	compress2( (Bytef*)CompressedBlockData, &CompressedSize, (const Bytef*)AllData, DataSize, Z_DEFAULT_COMPRESSION);

	delete [] AllData;

	m_CompressedData = CompressedBlockData;
	m_CompressedSize = CompressedSize;

#else
	m_PosX = a_Chunk->GetPosX() * 16; // It has to be block coordinates
	m_PosY = (short)(a_Chunk->GetPosY() * 128);
	m_PosZ = a_Chunk->GetPosZ() * 16;

	m_SizeX = 15;
	m_SizeY = 127;
	m_SizeZ = 15;

	uLongf CompressedSize = compressBound( cChunk::c_BlockDataSize );
	char * CompressedBlockData = new char[CompressedSize];

	compress2( (Bytef*)CompressedBlockData, &CompressedSize, (const Bytef*)a_Chunk->pGetBlockData(), cChunk::c_BlockDataSize, Z_DEFAULT_COMPRESSION);

	m_CompressedData = CompressedBlockData;
	m_CompressedSize = CompressedSize;
#endif
}





cPacket_MapChunk::cPacket_MapChunk( const cPacket_MapChunk & a_Copy )
{
	m_PacketID = E_MAP_CHUNK;

#if (MINECRAFT_1_2_2 == 1 )
	m_PosX = a_Copy.m_PosX;
	m_PosZ = a_Copy.m_PosZ;
	m_bContiguous = a_Copy.m_bContiguous;
	m_BitMap1 = a_Copy.m_BitMap1;
	m_BitMap2 = a_Copy.m_BitMap2;

	m_CompressedSize = a_Copy.m_CompressedSize;
	m_CompressedData = new char[m_CompressedSize];
	memcpy( m_CompressedData, a_Copy.m_CompressedData, m_CompressedSize );
#else
	m_PosX = a_Copy.m_PosX;
	m_PosY = a_Copy.m_PosY;
	m_PosZ = a_Copy.m_PosZ;
	m_SizeX = a_Copy.m_SizeX;
	m_SizeY = a_Copy.m_SizeY;
	m_SizeZ = a_Copy.m_SizeZ;

	m_CompressedSize = a_Copy.m_CompressedSize;
	m_CompressedData = new char[m_CompressedSize];
	memcpy( m_CompressedData, a_Copy.m_CompressedData, m_CompressedSize );
#endif
}





void cPacket_MapChunk::Serialize(AString & a_Data) const
{
	AppendByte   (a_Data, m_PacketID);

#if (MINECRAFT_1_2_2 == 1 )
	AppendInteger(a_Data, m_PosX);
	AppendInteger(a_Data, m_PosZ);
	AppendBool   (a_Data, m_bContiguous);
	AppendShort  (a_Data, m_BitMap1);
	AppendShort  (a_Data, m_BitMap2);
	AppendInteger(a_Data, m_CompressedSize);
	AppendInteger(a_Data, m_UnusedInt);
	AppendData   (a_Data, m_CompressedData, m_CompressedSize);
#else
	AppendInteger(a_Data, m_PosX);
	AppendShort  (a_Data, m_PosY);
	AppendInteger(a_Data, m_PosZ);
	AppendByte   (a_Data, m_SizeX);
	AppendByte   (a_Data, m_SizeY);
	AppendByte   (a_Data, m_SizeZ);
	AppendInteger(a_Data, m_CompressedSize);
	AppendData   (a_Data, m_CompressedData, m_CompressedSize);
#endif
}