cuberite-2a/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()
{
	if( m_CompressedData )
	{
		delete [] m_CompressedData;
	}
}

cPacket_MapChunk::cPacket_MapChunk(cChunk* a_Chunk)
{
	m_PacketID = E_MAP_CHUNK;

	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;
}

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

bool cPacket_MapChunk::Send(cSocket & a_Socket)
{
	unsigned int TotalSize = c_Size + m_CompressedSize;
	char* Message = new char[TotalSize];

	unsigned int i = 0;
	AppendByte		( (char)m_PacketID,						Message, i );
	AppendInteger	( m_PosX,								Message, i );
	AppendShort		( m_PosY,								Message, i );
	AppendInteger	( m_PosZ,								Message, i );
	AppendByte		( m_SizeX,								Message, i );
	AppendByte		( m_SizeY,								Message, i );
	AppendByte		( m_SizeZ,								Message, i );
	AppendInteger	( m_CompressedSize,						Message, i );
	AppendData		( m_CompressedData, m_CompressedSize,	Message, i );

	bool RetVal = !cSocket::IsSocketError( SendData( a_Socket, Message, TotalSize, 0 ) );
	delete [] Message;
	return RetVal;
}