/// <summary>
/// Reads a ToEE object id from the reader.
/// </summary>
/// <param name="reader"></param>
/// <returns></returns>
public static ObjectId ReadObjectId(this BinaryReader reader)
{
Span <byte> buffer = stackalloc byte[24];
if (reader.Read(buffer) != buffer.Length)
{
throw new Exception("Failed to read 24-byte ObjectId");
}
var type = BitConverter.ToUInt16(buffer.Slice(0, sizeof(ushort)));
var payload = buffer.Slice(8); // ObjectId seems to use 8-byte packed
switch (type)
{
case 0:
return(ObjectId.CreateNull());
case 1:
var protoId = BitConverter.ToUInt16(payload.Slice(0, sizeof(ushort)));
return(ObjectId.CreatePrototype(protoId));
case 2:
var guid = MemoryMarshal.Read <Guid>(payload);
return(ObjectId.CreatePermanent(guid));
case 3:
var positionalId = MemoryMarshal.Read <PositionalId>(payload);
return(ObjectId.CreatePositional(positionalId));
case 0xFFFE:
throw new Exception("Cannot load 'handle' ObjectIDs because the pointers are stale!");
case 0xFFFF:
return(ObjectId.CreateBlocked());
default:
throw new Exception("Unknown ObjectId type: " + type);
}
}
