public override byte[] GetBytes(Stream instream)
{
if (_cache != null)
{
instream.Write(_cache);
return(_cache);
}
using (var stream = new MemoryStream())
{
stream.WriteByte(8); // version
int numberOfStores = 1;
stream.WriteByte((byte)numberOfStores); // storage size
List <uint> palette = new List <uint>(10);
byte[] indexes = new byte[_blocks.Length];
for (int i = 0; i < numberOfStores; i++)
{
palette.Clear();
stream.WriteByte((8 << 1) | 1); // version
int index = 0;
uint prevHash = uint.MaxValue;
for (int b = 0; b < _blocks.Length; b++)
{
byte bid = (byte)_blocks[b];
byte data = _metadata[b];
uint hash = BlockFactory.GetRuntimeId(bid, data);
if (hash != prevHash)
{
index = palette.IndexOf(hash);
if (index == -1)
{
palette.Add(hash);
}
index = palette.IndexOf(hash);
}
indexes[b] = (byte)index;
prevHash = hash;
}
stream.Write(indexes, 0, indexes.Length);
VarInt.WriteSInt32(stream, palette.Count); // count
foreach (var val in palette)
{
VarInt.WriteSInt32(stream, (int)val);
}
}
var bytes = stream.ToArray();
instream.Write(bytes);
_cache = bytes;
}
return(_cache);
}
public override void WriteTo(BinaryWriter reader)
{
Stream stream = reader.BaseStream;
VarInt.WriteSInt32(stream, Value.X);
VarInt.WriteSInt32(stream, Value.Y);
VarInt.WriteSInt32(stream, Value.Z);
}
public byte[] GetBytes()
{
if (_cache != null)
{
return(_cache);
}
using (MemoryStream stream = MiNetServer.MemoryStreamManager.GetStream())
{
NbtBinaryWriter writer = new NbtBinaryWriter(stream, true);
int topEmpty = 16;
for (int ci = 15; ci >= 0; ci--)
{
if (chunks[ci].IsAllAir())
{
topEmpty = ci;
}
else
{
break;
}
}
writer.Write((byte)topEmpty);
int sent = 0;
for (int ci = 0; ci < topEmpty; ci++)
{
writer.Write((byte)0);
writer.Write(chunks[ci].GetBytes());
sent++;
}
//Log.Debug($"Saved sending {16 - sent} chunks");
//RecalcHeight();
byte[] ba = new byte[512];
Buffer.BlockCopy(height, 0, ba, 0, 512);
writer.Write(ba);
//Log.Debug($"Heights:\n{Package.HexDump(ba)}");
//BiomeUtils utils = new BiomeUtils();
//utils.PrecomputeBiomeColors();
//InterpolateBiomes();
writer.Write(biomeId);
//for (int i = 0; i < biomeId.Length; i++)
//{
// //var biome = biomeId[i];
// int color = biomeColor[i];
// writer.Write((int) (color & 0x00ffffff) /*| biome << 24*/);
//}
//short extraSize = 0;
//writer.Write(extraSize); // No extra data
// Count = SignedVarInt (zigzag)
// Each entry
// - Hash SignedVarint x << 12, z << 8, y
// - Block data short
writer.Write((byte)0); // Border blocks - nope
VarInt.WriteSInt32(stream, 0); // Block extradata count
//VarInt.WriteSInt32(stream, 2);
//VarInt.WriteSInt32(stream, 1 << 12 | 1 << 8 | 4);
//writer.Write((byte)31);
//writer.Write((byte)0);
if (BlockEntities.Count == 0)
{
//NbtFile file = new NbtFile(new NbtCompound(string.Empty)) {BigEndian = false, UseVarInt = true};
//file.SaveToStream(writer.BaseStream, NbtCompression.None);
}
else
{
foreach (NbtCompound blockEntity in BlockEntities.Values.ToArray())
{
NbtFile file = new NbtFile(blockEntity)
{
BigEndian = false, UseVarInt = true
};
file.SaveToStream(writer.BaseStream, NbtCompression.None);
}
}
_cache = stream.ToArray();
}
return(_cache);
}
private bool WriteStore(MemoryStream stream, short[] blocks, byte[] loggedBlocks, bool forceWrite, List <int> palette)
{
if (palette.Count == 0)
{
return(false);
}
// log2(number of entries) => bits needed to store them
int bitsPerBlock = (int)Math.Ceiling(Math.Log(palette.Count, 2));
switch (bitsPerBlock)
{
case 0:
if (!forceWrite && palette.Contains(0))
{
return(false);
}
bitsPerBlock = 1;
break;
case 1:
case 2:
case 3:
case 4:
case 5:
case 6:
//Paletted1 = 1, // 32 blocks per word
//Paletted2 = 2, // 16 blocks per word
//Paletted3 = 3, // 10 blocks and 2 bits of padding per word
//Paletted4 = 4, // 8 blocks per word
//Paletted5 = 5, // 6 blocks and 2 bits of padding per word
//Paletted6 = 6, // 5 blocks and 2 bits of padding per word
break;
case 7:
case 8:
//Paletted8 = 8, // 4 blocks per word
bitsPerBlock = 8;
break;
case int i when i > 8:
//Paletted16 = 16, // 2 blocks per word
bitsPerBlock = 16;
break;
default:
break;
}
stream.WriteByte((byte)((bitsPerBlock << 1) | 1)); // version
int blocksPerWord = (int)Math.Floor(32f / bitsPerBlock); // Floor to remove padding bits
int wordsPerChunk = (int)Math.Ceiling(4096f / blocksPerWord);
byte t = 0;
uint[] indexes = new uint[wordsPerChunk];
int position = 0;
for (int w = 0; w < wordsPerChunk; w++)
{
uint word = 0;
for (int block = 0; block < blocksPerWord; block++)
{
if (position >= 4096)
{
continue;
}
uint state;
if (blocks != null)
{
state = (uint)blocks[position];
}
else
{
state = (uint)loggedBlocks[position];
}
word |= state << (bitsPerBlock * block);
position++;
}
indexes[w] = word;
}
byte[] ba = new byte[indexes.Length * 4];
Buffer.BlockCopy(indexes, 0, ba, 0, indexes.Length * 4);
stream.Write(ba, 0, ba.Length);
VarInt.WriteSInt32(stream, palette.Count); // count
foreach (var val in palette)
{
VarInt.WriteSInt32(stream, val);
}
return(true);
}
public void WriteSignedVarInt(int value)
{
VarInt.WriteSInt32(_buffer, value);
}
private static bool WriteStore(MemoryStream stream, short[] blocks, NibbleArray metadata, bool forceWrite)
{
var palette = new Dictionary <uint, byte>();
uint prevHash = uint.MaxValue;
for (int i = 0; i < 4096; i++)
{
uint hash = (uint)blocks[i] << 4 | metadata[i]; // 1.7
if (hash == prevHash)
{
continue;
}
prevHash = hash;
palette[hash] = 0;
}
// log2(number of entries) => bits needed to store them
int bitsPerBlock = (int)Math.Ceiling(Math.Log(palette.Count, 2));
switch (bitsPerBlock)
{
case 0:
if (!forceWrite && palette.ContainsKey(0))
{
return(false);
}
bitsPerBlock = 1;
break;
case 1:
case 2:
case 3:
case 4:
case 5:
case 6:
//Paletted1 = 1, // 32 blocks per word
//Paletted2 = 2, // 16 blocks per word
//Paletted3 = 3, // 10 blocks and 2 bits of padding per word
//Paletted4 = 4, // 8 blocks per word
//Paletted5 = 5, // 6 blocks and 2 bits of padding per word
//Paletted6 = 6, // 5 blocks and 2 bits of padding per word
break;
case 7:
case 8:
//Paletted8 = 8, // 4 blocks per word
bitsPerBlock = 8;
break;
case int i when i > 8:
//Paletted16 = 16, // 2 blocks per word
bitsPerBlock = 16;
break;
default:
break;
}
stream.WriteByte((byte)((bitsPerBlock << 1) | 1)); // version
int blocksPerWord = (int)Math.Floor(32f / bitsPerBlock); // Floor to remove padding bits
int wordsPerChunk = (int)Math.Ceiling(4096f / blocksPerWord);
byte t = 0;
foreach (var b in palette.ToArray())
{
palette[b.Key] = t++;
}
uint[] indexes = new uint[wordsPerChunk];
int position = 0;
for (int w = 0; w < wordsPerChunk; w++)
{
uint word = 0;
for (int block = 0; block < blocksPerWord; block++)
{
if (position >= 4096)
{
continue;
}
uint state = palette[(uint)blocks[position] << 4 | metadata[position]];
word |= state << (bitsPerBlock * block);
//string bin = Convert.ToString(word, 2);
//bin = new string('0', 32 - bin.Length) + bin;
//Console.WriteLine($"{bin}");
position++;
}
indexes[w] = word;
}
byte[] ba = new byte[indexes.Length * 4];
Buffer.BlockCopy(indexes, 0, ba, 0, indexes.Length * 4);
stream.Write(ba, 0, ba.Length);
int[] legacyToRuntimeId = BlockFactory.LegacyToRuntimeId;
VarInt.WriteSInt32(stream, palette.Count); // count
foreach (var val in palette)
{
VarInt.WriteSInt32(stream, legacyToRuntimeId[val.Key]);
}
return(true);
}
public override void WriteTo(BinaryWriter stream)
{
VarInt.WriteSInt32(stream.BaseStream, Value);
}
