Пример #1
0
        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);
        }
Пример #2
0
        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);
        }