internal static T ParseChunk <T>(
BinaryReader reader,
W3dParseContext context,
Func <W3dChunkHeader, T> parseCallback)
where T : W3dChunk
{
var chunkHeader = W3dChunkHeader.Parse(reader);
var startPosition = reader.BaseStream.Position;
var endPosition = startPosition + chunkHeader.ChunkSize;
context.PushChunk(typeof(T).Name, endPosition);
var result = parseCallback(chunkHeader);
result.StartPosition = startPosition;
result.EndPosition = endPosition;
context.PopAsset();
if (reader.BaseStream.Position != endPosition)
{
throw new InvalidDataException($"Error while parsing asset '{typeof(T).Name}'. Expected reader to be at position {endPosition}, but was at {reader.BaseStream.Position}.");
}
return(result);
}
private static W3dFile Parse(BinaryReader reader, string filePath)
{
var context = new W3dParseContext();
context.PushChunk(nameof(W3dFile), reader.BaseStream.Length);
var result = new W3dFile
{
FilePath = filePath
};
W3dContainerChunk.ParseChunks(reader, reader.BaseStream.Length, chunkType =>
{
switch (chunkType)
{
case W3dChunkType.W3D_CHUNK_MESH:
result.Chunks.Add(W3dMesh.Parse(reader, context));
break;
case W3dChunkType.W3D_CHUNK_BOX:
result.Chunks.Add(W3dBox.Parse(reader, context));
break;
case W3dChunkType.W3D_CHUNK_HIERARCHY:
result.Chunks.Add(W3dHierarchyDef.Parse(reader, context));
break;
case W3dChunkType.W3D_CHUNK_HLOD:
result.Chunks.Add(W3dHLod.Parse(reader, context));
break;
case W3dChunkType.W3D_CHUNK_ANIMATION:
result.Chunks.Add(W3dAnimation.Parse(reader, context));
break;
case W3dChunkType.W3D_CHUNK_COMPRESSED_ANIMATION:
result.Chunks.Add(W3dCompressedAnimation.Parse(reader, context));
break;
case W3dChunkType.W3D_CHUNK_EMITTER:
result.Chunks.Add(W3dEmitter.Parse(reader, context));
break;
default:
throw W3dContainerChunk.CreateUnknownChunkException(chunkType);
}
});
context.PopAsset();
return(result);
}
