public static NbtMap Load(string filename)
{
var map = new NbtMap();
var nf = new NBTFile(filename);
using (var nbtstr = nf.GetDataInputStream())
{
var tree = new NbtTree(nbtstr);
var root = tree.Root["map"];
var list = root.ToTagList();
foreach (var tag in list)
{
var k = tag.ToTagCompound()["k"].ToTagString();
var v = (short)tag.ToTagCompound()["v"].ToTagInt();
if (!map.ContainsKey(v))
{
map.Add(v, k);
}
}
return(map);
}
}
private ScarifStructure(int version, NbtMap idMap, DiffMap diffMap) : this(idMap)
{
Version = version;
BlockDiffMap = diffMap;
}
public ScarifStructure(NbtMap blockTranslationMap)
{
BlockDiffMap = new DiffMap();
BlockTranslationMap = blockTranslationMap;
}
public static ScarifStructure Load(string filename)
{
using (var fs = File.OpenRead(filename))
using (var bs = new BrotliStream(fs, CompressionMode.Decompress))
using (var s = new BinaryReader(bs))
{
var idMap = new NbtMap();
var diffMap = new DiffMap();
var identBytes = new byte[Magic.Length];
var read = s.Read(identBytes, 0, identBytes.Length);
var ident = Encoding.UTF8.GetString(identBytes);
if (ident != Magic || read != identBytes.Length)
{
throw new IOException("Input file not SCARIF structure");
}
var version = s.ReadInt32();
var numChunks = s.ReadInt32();
var numIdMapEntries = s.ReadInt32();
for (var entryIdx = 0; entryIdx < numIdMapEntries; entryIdx++)
{
var id = s.ReadInt16();
var name = ReadNullTerminatedString(s);
idMap.Add(id, name);
}
for (var chunkIdx = 0; chunkIdx < numChunks; chunkIdx++)
{
var chunkX = s.ReadInt32();
var chunkZ = s.ReadInt32();
var numBlocks = s.ReadInt32();
var blocks = new BlockDiffEntry[numBlocks];
for (var blockIdx = 0; blockIdx < numBlocks; blockIdx++)
{
// Format:
// 0x 0000 1111
// xxxx zzzz
var xz = s.ReadByte();
var x = (byte)((xz & 0xF0) >> 4);
var z = (byte)(xz & 0x0F);
var y = s.ReadByte();
var id = s.ReadInt16();
var flags = (ScarifBlock.BlockFlags)s.ReadByte();
byte metadata = 0;
NbtTree tileTag = null;
if (flags.Has(ScarifBlock.BlockFlags.Metadata))
{
metadata = s.ReadByte();
}
if (flags.Has(ScarifBlock.BlockFlags.Nbt))
{
var len = s.ReadInt32();
if (len <= 0)
{
throw new IOException("Zero-length NBT present");
}
var bytes = s.ReadBytes(len);
using (var ms = new MemoryStream(bytes))
tileTag = new NbtTree(ms);
}
if (idMap.ContainsKey(id))
{
blocks[blockIdx] = new BlockDiffEntry(new BlockPosition(x, y, z), new ScarifBlock(id, metadata, tileTag));
}
else
{
throw new IOException($"Unknown block ID found: {id}");
}
}
diffMap.Add(new ChunkPosition(chunkX, chunkZ), blocks);
}
return(new ScarifStructure(version, idMap, diffMap));
}
}
