public bool DoDecompression()
{
LocalPools pools = Globals.WorkPool.GetPool(Chunk.ThreadID);
BlockProvider provider = Chunk.World.blockProvider;
if (IsDifferential)
{
int blockPosSize = StructSerialization.TSSize <BlockPos> .ValueSize;
int blockDataSize = StructSerialization.TSSize <BlockData> .ValueSize;
positionsModified = new BlockPos[positionsBytes.Length / blockPosSize];
blocksModified = new BlockData[blocksBytes.Length / blockDataSize];
int i, j;
unsafe
{
// Extract positions
fixed(byte *pSrc = positionsBytes)
{
for (i = 0, j = 0; j < positionsModified.Length; i += blockPosSize, j++)
{
positionsModified[j] = *(BlockPos *)&pSrc[i];
Chunk.Blocks.modifiedBlocks.Add(positionsModified[j]);
}
}
// Extract block data
fixed(byte *pSrc = blocksBytes)
{
for (i = 0, j = 0; j < blocksModified.Length; i += blockDataSize, j++)
{
BlockData *bd = (BlockData *)&pSrc[i];
// Convert global block types into internal optimized version
ushort type = provider.GetTypeFromTypeInConfig(bd->Type);
blocksModified[j] = new BlockData(type, bd->Solid);
}
}
}
}
else
{
int blockDataSize = StructSerialization.TSSize <BlockData> .ValueSize;
int requestedByteSize = Env.CHUNK_SIZE_POW_3 * blockDataSize;
// Pop a large enough buffers from the pool
byte[] bytes = pools.byteArrayPool.Pop(requestedByteSize);
{
// Decompress data
int decompressedLength = CLZF2.lzf_decompress(blocksBytes, blocksBytes.Length, ref bytes);
if (decompressedLength != Env.CHUNK_SIZE_POW_3 * blockDataSize)
{
blocksBytes = null;
return(false);
}
// Fill chunk with decompressed data
ChunkBlocks blocks = Chunk.Blocks;
int i = 0;
unsafe
{
fixed(byte *pSrc = bytes)
{
int index = Helpers.ZERO_CHUNK_INDEX;
int yOffset = Env.CHUNK_SIZE_WITH_PADDING_POW_2 - Env.CHUNK_SIZE * Env.CHUNK_SIZE_WITH_PADDING;
int zOffset = Env.CHUNK_SIZE_WITH_PADDING - Env.CHUNK_SIZE;
for (int y = 0; y < Env.CHUNK_SIZE; ++y, index += yOffset)
{
for (int z = 0; z < Env.CHUNK_SIZE; ++z, index += zOffset)
{
for (int x = 0; x < Env.CHUNK_SIZE; ++x, i += blockDataSize, ++index)
{
BlockData *bd = (BlockData *)&pSrc[i];
// Convert global block type into internal optimized version
ushort type = provider.GetTypeFromTypeInConfig(bd->Type);
blocks.SetRaw(index, new BlockData(type, bd->Solid));
}
}
}
}
}
}
// Return our temporary buffer back to the pool
pools.byteArrayPool.Push(bytes);
}
ResetTemporary();
return(true);
}
public bool DoCompression()
{
if (Features.useDifferentialSerialization)
{
BlockProvider provider = Chunk.World.blockProvider;
int blockPosSize = StructSerialization.TSSize <BlockPos> .ValueSize;
int blockDataSize = StructSerialization.TSSize <BlockData> .ValueSize;
int posLenBytes = blocksModified.Length * blockPosSize;
int blkLenBytes = blocksModified.Length * blockDataSize;
positionsBytes = new byte[posLenBytes];
blocksBytes = new byte[blkLenBytes];
unsafe
{
// Pack positions to a byte array
fixed(byte *pDst = positionsBytes)
{
for (int i = 0, j = 0; i < blocksModified.Length; i++, j += blockPosSize)
{
*(BlockPos *)&pDst[j] = positionsModified[i];
}
}
// Pack block data to a byte array
fixed(BlockData *pBD = blocksModified)
fixed(byte *pDst = blocksBytes)
{
for (int i = 0, j = 0; i < blocksModified.Length; i++, j += blockDataSize)
{
BlockData *bd = &pBD[i];
// Convert block types from internal optimized version into global types
ushort typeInConfig = provider.GetConfig(bd->Type).TypeInConfig;
*(BlockData *)&pDst[j] = new BlockData(typeInConfig, bd->Solid);
}
}
}
}
else
{
LocalPools pools = Globals.WorkPool.GetPool(Chunk.ThreadID);
BlockProvider provider = Chunk.World.blockProvider;
int blockDataSize = StructSerialization.TSSize <BlockData> .ValueSize;
int requestedByteSize = Env.CHUNK_SIZE_POW_3 * blockDataSize;
// Pop large enough buffers from the pool
byte[] tmp = pools.byteArrayPool.Pop(requestedByteSize);
byte[] bytesCompressed = pools.byteArrayPool.Pop(requestedByteSize);
{
ChunkBlocks blocks = Chunk.Blocks;
int i = 0;
int index = Helpers.ZERO_CHUNK_INDEX;
int yOffset = Env.CHUNK_SIZE_WITH_PADDING_POW_2 - Env.CHUNK_SIZE * Env.CHUNK_SIZE_WITH_PADDING;
int zOffset = Env.CHUNK_SIZE_WITH_PADDING - Env.CHUNK_SIZE;
for (int y = 0; y < Env.CHUNK_SIZE; ++y, index += yOffset)
{
for (int z = 0; z < Env.CHUNK_SIZE; ++z, index += zOffset)
{
for (int x = 0; x < Env.CHUNK_SIZE; ++x, i += blockDataSize, ++index)
{
BlockData bd = blocks.Get(index);
// Convert block types from internal optimized version into global types
ushort typeInConfig = provider.GetConfig(bd.Type).TypeInConfig;
// Write updated block data to destination buffer
unsafe
{
fixed(byte *pDst = tmp)
{
*(BlockData *)&pDst[i] = new BlockData(typeInConfig, bd.Solid);
}
}
}
}
}
// Compress bytes
int blkLenBytes = CLZF2.lzf_compress(tmp, requestedByteSize, ref bytesCompressed);
blocksBytes = new byte[blkLenBytes];
// Copy data from a temporary buffer to block buffer
Array.Copy(bytesCompressed, 0, blocksBytes, 0, blkLenBytes);
}
// Return our temporary buffer back to the pool
pools.byteArrayPool.Push(bytesCompressed);
pools.byteArrayPool.Push(tmp);
}
return(true);
}