public static ChunkColumn DecodeChunkColumn(int subChunkCount, byte[] buffer, BlockPalette bedrockPalette = null, HashSet <BlockStateContainer> internalBlockPallet = null)
{
lock (_chunkRead)
{
var stream = new MemoryStream(buffer);
{
var defStream = new NbtBinaryReader(stream, true);
if (subChunkCount < 1)
{
Log.Warn("Nothing to read");
return(null);
}
Log.Debug($"Reading {subChunkCount} sections");
var chunkColumn = new ChunkColumn(false);
for (int chunkIndex = 0; chunkIndex < subChunkCount; chunkIndex++)
{
int version = defStream.ReadByte();
int storageSize = defStream.ReadByte();
var subChunk = chunkColumn[chunkIndex];
for (int storageIndex = 0; storageIndex < storageSize; storageIndex++)
{
int bitsPerBlock = defStream.ReadByte() >> 1;
int blocksPerWord = (int)Math.Floor(32f / bitsPerBlock);
int wordsPerChunk = (int)Math.Ceiling(4096f / blocksPerWord);
Log.Debug($"New section {chunkIndex}, " +
$"version={version}, " +
$"storageSize={storageSize}, " +
$"storageIndex={storageIndex}, " +
$"bitsPerBlock={bitsPerBlock}, " +
$"noBlocksPerWord={blocksPerWord}, " +
$"wordCount={wordsPerChunk}, " +
$"");
long jumpPos = stream.Position;
stream.Seek(wordsPerChunk * 4, SeekOrigin.Current);
int paletteCount = VarInt.ReadSInt32(stream);
var palette = new int[paletteCount];
for (int j = 0; j < paletteCount; j++)
{
int runtimeId = VarInt.ReadSInt32(stream);
if (bedrockPalette == null || internalBlockPallet == null)
{
continue;
}
palette[j] = GetServerRuntimeId(bedrockPalette, internalBlockPallet, runtimeId);
}
long afterPos = stream.Position;
stream.Position = jumpPos;
int position = 0;
for (int w = 0; w < wordsPerChunk; w++)
{
uint word = defStream.ReadUInt32();
for (int block = 0; block < blocksPerWord; block++)
{
if (position >= 4096)
{
continue;
}
uint state = (uint)((word >> ((position % blocksPerWord) * bitsPerBlock)) & ((1 << bitsPerBlock) - 1));
int x = (position >> 8) & 0xF;
int y = position & 0xF;
int z = (position >> 4) & 0xF;
int runtimeId = palette[state];
if (storageIndex == 0)
{
subChunk.SetBlockByRuntimeId(x, y, z, (int)runtimeId);
}
else
{
subChunk.SetLoggedBlockByRuntimeId(x, y, z, (int)runtimeId);
}
position++;
}
}
stream.Position = afterPos;
}
}
if (defStream.Read(chunkColumn.biomeId, 0, 256) != 256)
{
Log.Error($"Out of data biomeId");
}
//Log.Debug($"biomeId:\n{Package.HexDump(chunk.biomeId)}");
//if (stream.Position >= stream.Length - 1) return chunkColumn;
int borderBlock = VarInt.ReadSInt32(stream);
if (borderBlock != 0)
{
byte[] buf = new byte[borderBlock];
int len = defStream.Read(buf, 0, borderBlock);
Log.Warn($"??? Got borderblock {borderBlock}. Read {len} bytes");
Log.Debug($"{Packet.HexDump(buf)}");
for (int i = 0; i < borderBlock; i++)
{
int x = (buf[i] & 0xf0) >> 4;
int z = buf[i] & 0x0f;
Log.Debug($"x={x}, z={z}");
}
}
if (stream.Position < stream.Length - 1)
{
while (stream.Position < stream.Length)
{
NbtFile file = new NbtFile()
{
BigEndian = false,
UseVarInt = true
};
file.LoadFromStream(stream, NbtCompression.None);
var blockEntityTag = file.RootTag;
if (blockEntityTag.Name != "alex")
{
int x = blockEntityTag["x"].IntValue;
int y = blockEntityTag["y"].IntValue;
int z = blockEntityTag["z"].IntValue;
chunkColumn.SetBlockEntity(new BlockCoordinates(x, y, z), (NbtCompound)file.RootTag);
Log.Debug($"Blockentity:\n{file.RootTag}");
}
}
}
if (stream.Position < stream.Length - 1)
{
Log.Warn($"Still have data to read\n{Packet.HexDump(defStream.ReadBytes((int) (stream.Length - stream.Position)))}");
}
return(chunkColumn);
}
}
}
private void HandleChunk(bool cacheEnabled, uint subChunkCount, byte[] chunkData, int cx, int cz, Action <ChunkColumn> callback)
{
if (cacheEnabled)
{
// Log.Warn($"Unsupported cache enabled!");
HandleChunkCachePacket(subChunkCount, chunkData, cx, cz, callback);
return;
}
bool gotLight = false;
try
{
using (MemoryStream stream = new MemoryStream(chunkData))
{
NbtBinaryReader defStream = new NbtBinaryReader(stream, true);
//int count = defStream.ReadByte();
if (subChunkCount < 1)
{
Log.Warn("Nothing to read");
return;
}
ChunkColumn chunkColumn = new ChunkColumn();
chunkColumn.IsDirty = true;
chunkColumn.X = cx;
chunkColumn.Z = cz;
for (int s = 0; s < subChunkCount; s++)
{
var section = chunkColumn.Sections[s] as ChunkSection;
int version = defStream.ReadByte();
if (version == 1 || version == 8)
{
int storageSize = version == 1 ? 1 : defStream.ReadByte();
if (section == null)
{
section = new ChunkSection(chunkColumn, s, true, 2);
}
for (int storage = 0; storage < storageSize; storage++)
{
int paletteAndFlag = defStream.ReadByte();
bool isRuntime = (paletteAndFlag & 1) != 0;
int bitsPerBlock = paletteAndFlag >> 1;
int blocksPerWord = (int)Math.Floor(32f / bitsPerBlock);
int wordCount = (int)Math.Ceiling(4096.0f / blocksPerWord);
uint[] words = new uint[wordCount];
for (int w = 0; w < wordCount; w++)
{
words[w] = defStream.ReadUInt32();
}
int[] pallete = new int[0];
if (isRuntime)
{
int palleteSize = defStream.ReadVarInt(); // VarInt.ReadSInt32(stream);
if (palleteSize <= 0)
{
Log.Warn($"Pallete size is <= 0 ({palleteSize})");
continue;
}
pallete = new int[palleteSize];
for (int pi = 0; pi < pallete.Length; pi++)
{
var ui = defStream.ReadVarInt(); //VarInt.ReadSInt32(stream);
pallete[pi] = ui;
}
}
int position = 0;
for (int w = 0; w < wordCount; w++)
{
uint word = words[w];
for (int block = 0; block < blocksPerWord; block++)
{
if (position >= 4096)
{
break; // padding bytes
}
uint state =
(uint)((word >> ((position % blocksPerWord) * bitsPerBlock)) &
((1 << bitsPerBlock) - 1));
int x = (position >> 8) & 0xF;
int y = position & 0xF;
int z = (position >> 4) & 0xF;
if (state >= pallete.Length)
{
continue;
}
BlockState translated = GetBlockState((uint)pallete[state]);
if (translated != null)
{
section.Set(storage, x, y, z, translated);
}
position++;
}
if (position >= 4096)
{
break;
}
}
}
}
else
{
if (section == null)
{
section = new ChunkSection(chunkColumn, s, true, 1);
}
#region OldFormat
byte[] blockIds = new byte[4096];
defStream.Read(blockIds, 0, blockIds.Length);
NibbleArray data = new NibbleArray(4096);
defStream.Read(data.Data, 0, data.Data.Length);
for (int x = 0; x < 16; x++)
{
for (int z = 0; z < 16; z++)
{
for (int y = 0; y < 16; y++)
{
int idx = (x << 8) + (z << 4) + y;
var id = blockIds[idx];
var meta = data[idx];
var ruid = BlockFactory.GetBlockStateID(id, meta);
BlockState result = null;
if (!_convertedStates.TryGetValue(
ruid, out result))
{
if (id == 124 || id == 123)
{
result = BlockFactory.GetBlockState("minecraft:redstone_lamp");
if (id == 124)
{
result = result.WithProperty("lit", "true");
}
}
else if (id > 0 && result == null)
{
var reverseMap =
MiNET.Worlds.AnvilWorldProvider.Convert.FirstOrDefault(
map => map.Value.Item1 == id);
if (reverseMap.Value != null)
{
id = (byte)reverseMap.Key;
}
var res = BlockFactory.GetBlockStateID(id, meta);
if (AnvilWorldProvider.BlockStateMapper.TryGetValue(res, out var res2))
{
var t = BlockFactory.GetBlockState(res2);
t = TranslateBlockState(t, id, meta);
result = t;
}
else
{
Log.Info($"Did not find anvil statemap: {result.Name}");
result = TranslateBlockState(
BlockFactory.GetBlockState(res), id, meta);
}
}
if (result == null)
{
var results = BlockFactory.RuntimeIdTable.Where(xx => xx.Id == id)
.ToArray();
if (results.Length > 0)
{
var first = results.FirstOrDefault(xx => xx.Data == meta);
if (first == default)
{
first = results[0];
}
result = TranslateBlockState(
BlockFactory.GetBlockState((uint)first.RuntimeId), id, meta);
}
}
if (result == null)
{
result = new BlockState()
{
Name = $"{id}:{meta.ToString()}",
Model = BlockFactory.UnknownBlockModel,
Block = new Block(0)
{
}
};
Log.Info($"Unknown block: {id}:{meta}");
}
if (result != null)
{
_convertedStates.TryAdd(ruid, result);
}
}
if (result != null)
{
section.Set(x, y, z, result);
}
else
{
Log.Info($"Unknown block: {id}:{meta}");
}
}
}
}
#endregion
}
if (UseAlexChunks)
{
// Log.Info($"Alex chunk!");
var rawSky = new API.Utils.NibbleArray(4096);
defStream.Read(rawSky.Data, 0, rawSky.Data.Length);
var rawBlock = new API.Utils.NibbleArray(4096);
defStream.Read(rawBlock.Data, 0, rawBlock.Data.Length);
for (int x = 0; x < 16; x++)
{
for (int y = 0; y < 16; y++)
{
for (int z = 0; z < 16; z++)
{
var peIndex = (x * 256) + (z * 16) + y;
var sky = rawSky[peIndex];
var block = rawBlock[peIndex];
var idx = y << 8 | z << 4 | x;
section.SkyLight[idx] = sky;
section.BlockLight[idx] = block;
}
}
}
gotLight = true;
}
section.RemoveInvalidBlocks();
section.IsDirty = true;
//Make sure the section is saved.
chunkColumn.Sections[s] = section;
}
/* byte[] ba = new byte[512];
* if (defStream.Read(ba, 0, 256 * 2) != 256 * 2) Log.Error($"Out of data height");
*
* Buffer.BlockCopy(ba, 0, chunkColumn.Height, 0, 512);*/
int[] biomeIds = new int[256];
for (int i = 0; i < biomeIds.Length; i++)
{
biomeIds[i] = defStream.ReadByte();
}
chunkColumn.BiomeId = biomeIds;
if (stream.Position >= stream.Length - 1)
{
callback?.Invoke(chunkColumn);
return;
}
int borderBlock = defStream.ReadVarInt(); //VarInt.ReadSInt32(stream);
if (borderBlock > 0)
{
byte[] buf = new byte[borderBlock];
int len = defStream.Read(buf, 0, borderBlock);
}
if (stream.Position < stream.Length - 1)
{
int loop = 0;
while (stream.Position < stream.Length - 1)
{
try
{
NbtFile file = new NbtFile()
{
BigEndian = false,
UseVarInt = true
};
file.LoadFromStream(stream, NbtCompression.None);
if (file.RootTag.Name == "alex")
{
NbtCompound alexCompound = (NbtCompound)file.RootTag;
for (int ci = 0; ci < subChunkCount; ci++)
{
var section = (ChunkSection)chunkColumn.Sections[ci];
var rawSky = new API.Utils.NibbleArray(4096);
if (alexCompound.TryGet($"skylight-{ci}", out NbtByteArray skyData))
{
rawSky.Data = skyData.Value;
}
//defStream.Read(rawSky.Data, 0, rawSky.Data.Length);
var rawBlock = new API.Utils.NibbleArray(4096);
if (alexCompound.TryGet($"blocklight-{ci}", out NbtByteArray blockData))
{
rawBlock.Data = blockData.Value;
}
for (int x = 0; x < 16; x++)
{
for (int y = 0; y < 16; y++)
{
for (int z = 0; z < 16; z++)
{
var peIndex = (x * 256) + (z * 16) + y;
var sky = rawSky[peIndex];
var block = rawBlock[peIndex];
var idx = y << 8 | z << 4 | x;
section.SkyLight[idx] = sky;
section.BlockLight[idx] = block;
}
}
}
chunkColumn.Sections[ci] = section;
}
gotLight = true;
}
if (stream.Position < stream.Length - 1)
{
// pre = stream.ReadByte();
}
}
catch (Exception ex)
{
// Log.Warn(ex, $"Reading chunk extra data (Loop={loop})");
}
loop++;
}
}
if (stream.Position < stream.Length - 1)
{
Log.Warn(
$"Still have data to read\n{Packet.HexDump(defStream.ReadBytes((int) (stream.Length - stream.Position)))}");
}
if (gotLight)
{
chunkColumn.SkyLightDirty = false;
chunkColumn.BlockLightDirty = false;
}
chunkColumn.CalculateHeight(!gotLight && ClientSideLighting);
//Done processing this chunk, send to world
callback?.Invoke(chunkColumn);
}
}
catch (Exception ex)
{
Log.Error($"Exception in chunk loading: {ex.ToString()}");
}
finally
{
}
}