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Diffstat (limited to 'source/Protocol/ChunkDataSerializer.cpp')
| -rw-r--r-- | source/Protocol/ChunkDataSerializer.cpp | 176 |
1 files changed, 0 insertions, 176 deletions
diff --git a/source/Protocol/ChunkDataSerializer.cpp b/source/Protocol/ChunkDataSerializer.cpp deleted file mode 100644 index 2a9230fee..000000000 --- a/source/Protocol/ChunkDataSerializer.cpp +++ /dev/null @@ -1,176 +0,0 @@ - -// ChunkDataSerializer.cpp - -// Implements the cChunkDataSerializer class representing the object that can: -// - serialize chunk data to different protocol versions -// - cache such serialized data for multiple clients - -#include "Globals.h" -#include "ChunkDataSerializer.h" -#include "zlib.h" - - - - -cChunkDataSerializer::cChunkDataSerializer( - const cChunkDef::BlockTypes & a_BlockTypes, - const cChunkDef::BlockNibbles & a_BlockMetas, - const cChunkDef::BlockNibbles & a_BlockLight, - const cChunkDef::BlockNibbles & a_BlockSkyLight, - const unsigned char * a_BiomeData -) : - m_BlockTypes(a_BlockTypes), - m_BlockMetas(a_BlockMetas), - m_BlockLight(a_BlockLight), - m_BlockSkyLight(a_BlockSkyLight), - m_BiomeData(a_BiomeData) -{ -} - - - - -const AString & cChunkDataSerializer::Serialize(int a_Version) -{ - Serializations::const_iterator itr = m_Serializations.find(a_Version); - if (itr != m_Serializations.end()) - { - return itr->second; - } - - AString data; - switch (a_Version) - { - case RELEASE_1_2_5: Serialize29(data); break; - case RELEASE_1_3_2: Serialize39(data); break; - // TODO: Other protocol versions may serialize the data differently; implement here - - default: - { - LOGERROR("cChunkDataSerializer::Serialize(): Unknown version: %d", a_Version); - ASSERT(!"Unknown chunk data serialization version"); - break; - } - } - m_Serializations[a_Version] = data; - return m_Serializations[a_Version]; -} - - - - - -void cChunkDataSerializer::Serialize29(AString & a_Data) -{ - // TODO: Do not copy data and then compress it; rather, compress partial blocks of data (zlib *can* stream) - - const int BiomeDataSize = cChunkDef::Width * cChunkDef::Width; - const int MetadataOffset = sizeof(m_BlockTypes); - const int BlockLightOffset = MetadataOffset + sizeof(m_BlockMetas); - const int SkyLightOffset = BlockLightOffset + sizeof(m_BlockLight); - const int BiomeOffset = SkyLightOffset + sizeof(m_BlockSkyLight); - const int DataSize = BiomeOffset + BiomeDataSize; - - // Temporary buffer for the composed data: - char AllData [DataSize]; - - memcpy(AllData, m_BlockTypes, sizeof(m_BlockTypes)); - memcpy(AllData + MetadataOffset, m_BlockMetas, sizeof(m_BlockMetas)); - memcpy(AllData + BlockLightOffset, m_BlockLight, sizeof(m_BlockLight)); - memcpy(AllData + SkyLightOffset, m_BlockSkyLight, sizeof(m_BlockSkyLight)); - memcpy(AllData + BiomeOffset, m_BiomeData, BiomeDataSize); - - // Compress the data: - // In order not to use allocation, use a fixed-size buffer, with the size - // that uses the same calculation as compressBound(): - const uLongf CompressedMaxSize = DataSize + (DataSize >> 12) + (DataSize >> 14) + (DataSize >> 25) + 16; - char CompressedBlockData[CompressedMaxSize]; - - uLongf CompressedSize = compressBound(DataSize); - - // Run-time check that our compile-time guess about CompressedMaxSize was enough: - ASSERT(CompressedSize <= CompressedMaxSize); - - compress2((Bytef*)CompressedBlockData, &CompressedSize, (const Bytef*)AllData, sizeof(AllData), Z_DEFAULT_COMPRESSION); - - // Now put all those data into a_Data: - - // "Ground-up continuous", or rather, "biome data present" flag: - a_Data.push_back('\x01'); - - // Two bitmaps; we're aways sending the full chunk with no additional data, so the bitmaps are 0xffff and 0, respectively - // Also, no endian flipping is needed because of the const values - unsigned short BitMap1 = 0xffff; - unsigned short BitMap2 = 0; - a_Data.append((const char *)&BitMap1, sizeof(short)); - a_Data.append((const char *)&BitMap2, sizeof(short)); - - Int32 CompressedSizeBE = htonl(CompressedSize); - a_Data.append((const char *)&CompressedSizeBE, sizeof(CompressedSizeBE)); - - Int32 UnusedInt32 = 0; - a_Data.append((const char *)&UnusedInt32, sizeof(UnusedInt32)); - - a_Data.append(CompressedBlockData, CompressedSize); -} - - - - - -void cChunkDataSerializer::Serialize39(AString & a_Data) -{ - // TODO: Do not copy data and then compress it; rather, compress partial blocks of data (zlib *can* stream) - - const int BiomeDataSize = cChunkDef::Width * cChunkDef::Width; - const int MetadataOffset = sizeof(m_BlockTypes); - const int BlockLightOffset = MetadataOffset + sizeof(m_BlockMetas); - const int SkyLightOffset = BlockLightOffset + sizeof(m_BlockLight); - const int BiomeOffset = SkyLightOffset + sizeof(m_BlockSkyLight); - const int DataSize = BiomeOffset + BiomeDataSize; - - // Temporary buffer for the composed data: - char AllData [DataSize]; - - memcpy(AllData, m_BlockTypes, sizeof(m_BlockTypes)); - memcpy(AllData + MetadataOffset, m_BlockMetas, sizeof(m_BlockMetas)); - memcpy(AllData + BlockLightOffset, m_BlockLight, sizeof(m_BlockLight)); - memcpy(AllData + SkyLightOffset, m_BlockSkyLight, sizeof(m_BlockSkyLight)); - memcpy(AllData + BiomeOffset, m_BiomeData, BiomeDataSize); - - // Compress the data: - // In order not to use allocation, use a fixed-size buffer, with the size - // that uses the same calculation as compressBound(): - const uLongf CompressedMaxSize = DataSize + (DataSize >> 12) + (DataSize >> 14) + (DataSize >> 25) + 16; - char CompressedBlockData[CompressedMaxSize]; - - uLongf CompressedSize = compressBound(DataSize); - - // Run-time check that our compile-time guess about CompressedMaxSize was enough: - ASSERT(CompressedSize <= CompressedMaxSize); - - compress2((Bytef*)CompressedBlockData, &CompressedSize, (const Bytef*)AllData, sizeof(AllData), Z_DEFAULT_COMPRESSION); - - // Now put all those data into a_Data: - - // "Ground-up continuous", or rather, "biome data present" flag: - a_Data.push_back('\x01'); - - // Two bitmaps; we're aways sending the full chunk with no additional data, so the bitmaps are 0xffff and 0, respectively - // Also, no endian flipping is needed because of the const values - unsigned short BitMap1 = 0xffff; - unsigned short BitMap2 = 0; - a_Data.append((const char *)&BitMap1, sizeof(short)); - a_Data.append((const char *)&BitMap2, sizeof(short)); - - Int32 CompressedSizeBE = htonl(CompressedSize); - a_Data.append((const char *)&CompressedSizeBE, sizeof(CompressedSizeBE)); - - // Unlike 29, 39 doesn't have the "unused" int - - a_Data.append(CompressedBlockData, CompressedSize); -} - - - - |