public static WTModel ReadBinary(Stream stream)
{
var reader = new BinaryReader(stream);
var returnModel = new WTModel();
//determine filetype
bool isSceneFile = false;
reader.BaseStream.Seek(24, SeekOrigin.Begin);
float version = reader.ReadSingle();
if (version == 1f)
{
isSceneFile = true;
}
else
{
reader.BaseStream.Seek(0, SeekOrigin.Begin);
version = reader.ReadSingle();
if (version != 1f)
{
throw new System.Exception($"Expected version 1.0, got version {version}. Either not a MDL/SCN file, or wrong version.");
}
}
//read data
int meshCount = reader.ReadInt32();
int lightCount = reader.ReadInt32();
int helperCount = reader.ReadInt32();
int splineCount = reader.ReadInt32();
int materialCount = reader.ReadInt32();
int textureCount = reader.ReadInt32();
//textures
for (int i = 0; i < textureCount; i++)
{
string tex = reader.ReadNullTerminatedString();
int id = reader.ReadInt32();
returnModel.Textures.Add(id, tex);
}
//materials
for (int i = 0; i < materialCount; i++)
{
var material = WTMaterial.ReadBinary(reader);
returnModel.Materials.Add(material.ID, material);
}
//meshes
for (int i = 0; i < meshCount; i++)
{
returnModel.Meshes.Add(WTMesh.ReadBinary(reader, isSceneFile));
}
//lights
for (int i = 0; i < lightCount; i++)
{
returnModel.Lights.Add(WTLight.ReadBinary(reader));
}
//helpers
for (int i = 0; i < helperCount; i++)
{
returnModel.Helpers.Add(WTHelper.ReadBinary(reader));
}
//splines
for (int i = 0; i < splineCount; i++)
{
returnModel.Splines.Add(WTSpline.ReadBinary(reader));
}
reader.Dispose();
return(returnModel);
}
public static WTMesh ReadBinary(BinaryReader reader, bool isSceneMesh)
{
var returnMesh = new WTMesh
{
Position = reader.ReadVector3()
};
if (isSceneMesh)
{
returnMesh.HasSecondUVChannel = reader.ReadUInt16() != 0;
}
//INDICES
int indexCount = reader.ReadInt32();
for (int i = 0; i < indexCount; i++)
{
returnMesh.VertexIndexMap.Add(reader.ReadInt32());
}
//VERTICES
int vertCount = reader.ReadInt32();
for (int i = 0; i < vertCount; i++)
{
returnMesh.Vertices.Add(reader.ReadVector3());
}
//UVS
//Console.WriteLine($"reading uvs at {reader.BaseStream.Position}, idxc {indexCount} uv2 {returnMesh.SceneThing}");
bool modelHasUvs = (reader.ReadUInt16() != 0);
if (modelHasUvs)
{
for (int i = 0; i < indexCount; i++)
{
returnMesh.UVsIndexMap.Add(reader.ReadInt32());
if (returnMesh.HasSecondUVChannel && isSceneMesh)
{
returnMesh.UVsIndexMapC2.Add(reader.ReadInt32());
}
}
int uvCount = reader.ReadInt32();
for (int i = 0; i < uvCount; i++)
{
returnMesh.UVs.Add(reader.ReadVector2());
}
}
//NORMALS
bool modelHasNormals = (reader.ReadUInt16() != 0);
if (modelHasNormals)
{
for (int i = 0; i < indexCount; i++)
{
returnMesh.NormalsIndexMap.Add(reader.ReadInt32());
}
int normalCount = reader.ReadInt32();
for (int i = 0; i < normalCount; i++)
{
float elevation = reader.ReadByte() * 1.411764752387544784530887019841f / 57.29578f;
float polar = reader.ReadByte() * 1.411764752387544784530887019841f / 57.29578f;
#if UNITY
float a = (float)(1f * Mathf.Sin(elevation));
Vector3 normal = new Vector3
{
x = (float)(a * Mathf.Cos(polar)),
y = (float)(Mathf.Cos(elevation)),
z = (float)(a * Mathf.Sin(polar))
};
#else
float a = (float)(1f * Math.Sin(elevation));
Vector3 normal = new Vector3
{
X = (float)(a * Math.Cos(polar)),
Y = (float)(Math.Cos(elevation)),
Z = (float)(a * Math.Sin(polar))
};
#endif
returnMesh.Normals.Add(normal);
}
}
//COLORS
int numColors = reader.ReadInt32();
if (numColors > 0)
{
for (int i = 0; i < numColors; i++)
{
returnMesh.Colors.Add(reader.ReadColor48());
}
}
//FACES
int faceCountTotal = reader.ReadInt32();
int faceSubmeshes = reader.ReadInt32();
for (int i = 0; i < faceSubmeshes; i++)
{
var submesh = new WTSubmesh
{
MaterialIndex = reader.ReadInt16()
};
if (returnMesh.HasSecondUVChannel && isSceneMesh)
{
submesh.MaterialIndexAlt = reader.ReadInt16();
}
int submeshIndexCount = reader.ReadInt32();
int submeshTriCount = submeshIndexCount * 3;
for (int j = 0; j < submeshTriCount; j++)
{
submesh.Indices.Add(reader.ReadInt32());
}
//add to data list
returnMesh.Submeshes.Add(submesh);
}
return(returnMesh);
}