public static void LoadUOP(string path)
{
var stream = new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.Read);
var streamReader = new BinaryReader(stream);
// Head Information Start
if (streamReader.ReadInt32() != 0x0050594D) // Not a UOP Files
{
return;
}
if (streamReader.ReadInt32() > 5) // Bad Version
{
return;
}
// Multi ID List Array Start
UOPHash.BuildChunkIDs(out var chunkIds);
// Multi ID List Array End
streamReader.ReadUInt32(); // format timestamp? 0xFD23EC43
var startAddress = streamReader.ReadInt64();
streamReader.ReadInt32();
streamReader.ReadInt32();
stream.Seek(startAddress, SeekOrigin.Begin); // Head Information End
long nextBlock;
do
{
var blockFileCount = streamReader.ReadInt32();
nextBlock = streamReader.ReadInt64();
var index = 0;
do
{
var offset = streamReader.ReadInt64();
var headerSize = streamReader.ReadInt32(); // header length
var compressedSize = streamReader.ReadInt32(); // compressed size
var decompressedSize = streamReader.ReadInt32(); // decompressed size
var filehash = streamReader.ReadUInt64(); // filename hash (HashLittle2)
streamReader.ReadUInt32();
var compressionMethod = streamReader.ReadInt16(); // compression method (0 = none, 1 = zlib)
index++;
if (offset == 0 || decompressedSize == 0 || filehash == 0x126D1E99DDEDEE0A) // Exclude housing.bin
{
continue;
}
chunkIds.TryGetValue(filehash, out var chunkID);
var position = stream.Position; // save current position
stream.Seek(offset + headerSize, SeekOrigin.Begin);
Span <byte> sourceData = new byte[compressedSize];
if (stream.Read(sourceData) != compressedSize)
{
continue;
}
Span <byte> data;
if (compressionMethod == 1)
{
data = new byte[decompressedSize];
Zlib.Unpack(data, ref decompressedSize, sourceData, compressedSize);
}
else
{
data = sourceData;
}
var tileList = new List <MultiTileEntry>();
// Skip the first 4 bytes
var reader = new BufferReader <byte>(data);
reader.Advance(4); // ???
reader.TryReadLittleEndian(out uint count);
for (uint i = 0; i < count; i++)
{
reader.TryReadLittleEndian(out ushort itemid);
reader.TryReadLittleEndian(out short x);
reader.TryReadLittleEndian(out short y);
reader.TryReadLittleEndian(out short z);
reader.TryReadLittleEndian(out ushort flagValue);
var tileFlag = flagValue switch
{
1 => TileFlag.None,
257 => TileFlag.Generic,
_ => TileFlag.Background // 0
};
reader.TryReadLittleEndian(out uint clilocsCount);
reader.Advance(clilocsCount * 4); // bypass binary block
tileList.Add(new MultiTileEntry(itemid, x, y, z, tileFlag));
}
Components[chunkID] = new MultiComponentList(tileList);
stream.Seek(position, SeekOrigin.Begin); // back to position
} while (index < blockFileCount);
} while (stream.Seek(nextBlock, SeekOrigin.Begin) != 0);
}
