public override void Decode(MinecraftStream stream)
{
var chunkSectionPos = stream.ReadLong();
ChunkX = (int)(chunkSectionPos >> 42);
var sectionY = (int)(chunkSectionPos << 44 >> 44);
ChunkZ = (int)(chunkSectionPos << 22 >> 42);
var inverse = stream.ReadBool();
//ChunkX = stream.ReadInt();
// ChunkZ = stream.ReadInt();
int recordCount = stream.ReadVarInt();
Records = new BlockUpdate[recordCount];
for (int i = 0; i < Records.Length; i++)
{
var encoded = stream.ReadVarLong();
// long encoded = rawId << 12 | (blockLocalX << 8 | blockLocalZ << 4 | blockLocalY)
var rawId = encoded >> 12;
var x = (int)((encoded >> 8) & 0xF);
var y = (int)(encoded & 0xF);
var z = (int)((encoded >> 4) & 0xF);
//byte horizontalPos = (byte)stream.ReadByte();
BlockUpdate update = new BlockUpdate();
update.X = (ChunkX << 4) + x;
update.Z = (ChunkZ << 4) + z;
update.Y = (sectionY << 4) + y;
update.BlockId = (uint)rawId;
Records[i] = update;
}
}