public M2SkinProfile GetSkin()
{
var geos = _model.Get <GEOS>().ToList();
var materials = _model.Get <MTLS>()?.ToArray();
var geoa = _model.Get <GEOA>()?.ToList();
M2SkinProfile profile = new M2SkinProfile()
{
Bones = 256,
Indices = Enumerable.Range(0, geos.Sum(x => x.Vertices.Count)).Select(x => (ushort)x).ToM2Array(),
Triangles = new M2Array <ushort>()
};
ushort offset = 0;
foreach (var geo in geos)
{
profile.Triangles.AddRange(geo.FaceVertices.SelectMany(y => y.ToArray(offset)));
offset += (ushort)geo.NrOfVertices;
M2SkinSection section = new M2SkinSection()
{
StartBones = (ushort)(profile.Submeshes?.Sum(x => x.NBones) ?? 0),
StartTriangle = (ushort)(profile.Submeshes?.Sum(x => x.NTriangles) ?? 0),
StartVertex = (ushort)(profile.Submeshes?.Sum(x => x.NVertices) ?? 0),
NBones = (ushort)geo.GroupedVertices.Count,
NTriangles = (ushort)geo.NrOfFaceVertices,
NVertices = (ushort)geo.NrOfVertices,
CenterBoundingBox = geo.GetCenter(),
CenterMass = geo.GetCenter(),
};
section.Radius = geo.Vertices.Select(x => x.ToC3Vector).Max(x => x.Distance(section.CenterBoundingBox));
profile.Submeshes.Add(section);
}
//M2 Batches
if (materials == null)
{
return(profile);
}
for (int m = 0; m < materials.Length; m++)
{
for (int l = 0; l < materials[m].Layers.Count; l++)
{
var layer = materials[m].Layers[l];
M2Batch batch = new M2Batch()
{
Flags = 16, //Usually 16 for static textures
Flags2 = (byte)layer.PriorityPlane,
ShaderId = 0,
SubmeshIndex = (ushort)geos.FindIndex(x => x.MaterialId == m),
SubmeshIndex2 = (ushort)geos.FindIndex(x => x.MaterialId == m),
ColorIndex = -1,
OpCount = 1,
RenderFlags = (ushort)profile.TextureUnits.Count,
Texture = (ushort)layer.TextureId,
TexUnitNumber2 = (ushort)layer.TextureId,
Layer = (ushort)l,
TextureAnim = (ushort)(layer.TextureAnimationId + 1), //MDX is -1 based
};
if (batch.TextureAnim > 0)
{
batch.Flags = 0; //0 for animated textures
}
if (geoa != null)
{
batch.ColorIndex = (short)geoa.FindIndex(x => x.GeosetId - 1 == batch.SubmeshIndex);
}
Model.TransLookup.Add((short)Model.TransLookup.Count);
profile.TextureUnits.Add(batch);
}
}
return(profile);
}
public static void ReadSkin(uint fileDataId, M2Model model)
{
var stream = CASC.OpenFile(fileDataId);
if (stream == null)
{
return;
}
using (var reader = new BinaryReader(stream))
{
var magic = reader.ReadUInt32().Flip();
if (magic != (uint)Chunks.SKIN)
{
throw new Exception($"{fileDataId} is not a SKIN! {magic:X}");
}
var indices = reader.ReadM2Array();
var triangles = reader.ReadM2Array();
var bones = reader.ReadM2Array();
var submeshes = reader.ReadM2Array();
var batches = reader.ReadM2Array();
var boneCountMax = reader.ReadUInt32();
var shadowBatches = reader.ReadM2Array();
// Read Triangles
reader.BaseStream.Position = triangles.Offset;
var triangleList = new int[triangles.Size];
for (var i = 0; i < triangles.Size; ++i)
{
triangleList[i] = reader.ReadUInt16();
}
// Read Batches
reader.BaseStream.Position = batches.Offset;
for (var i = 0; i < batches.Size; ++i)
{
var skinBatch = new M2Batch
{
Flag1 = reader.ReadByte(),
Flag2 = reader.ReadByte(),
ShaderId = reader.ReadUInt16(),
SkinSectionId = reader.ReadUInt16(),
GeosetIndex = reader.ReadUInt16(),
ColorIndex = reader.ReadUInt16(),
MaterialIndex = reader.ReadUInt16(),
MaterialLayer = reader.ReadUInt16(),
TextureCount = reader.ReadUInt16(),
TextureComboIndex = reader.ReadUInt16(),
TextureCoordComboIndex = reader.ReadUInt16(),
TextureTransformComboIndex = reader.ReadUInt16(),
TextureWeightComboIndex = reader.ReadUInt16()
};
model.BatchIndices.Add(skinBatch);
}
// Read Submeshes
reader.BaseStream.Position = submeshes.Offset;
for (var i = 0; i < submeshes.Size; ++i)
{
var submesh = new M2Submesh();
submesh.SkinSectionId = reader.ReadUInt16();
var submeshLevel = reader.ReadUInt16();
submesh.VertexStart = reader.ReadUInt16() + (submeshLevel << 16);
submesh.VertexCount = reader.ReadUInt16();
submesh.TriangleStart = reader.ReadUInt16() + (submeshLevel << 16);
submesh.TriangleCount = reader.ReadUInt16();
submesh.BoneCount = reader.ReadUInt16();
submesh.BoneComboIndex = reader.ReadUInt16();
submesh.BoneInfluence = reader.ReadUInt16();
submesh.CenterBoneIndex = reader.ReadUInt16();
var centerPosition = new Vector3(reader.ReadSingle() / WorldConstants.WorldScale,
reader.ReadSingle() / WorldConstants.WorldScale,
reader.ReadSingle() / WorldConstants.WorldScale);
submesh.CenterPosition = new Vector3(-centerPosition.x, centerPosition.z, -centerPosition.y);
var sortCenterPosition = new Vector3(reader.ReadSingle() / WorldConstants.WorldScale,
reader.ReadSingle() / WorldConstants.WorldScale,
reader.ReadSingle() / WorldConstants.WorldScale);
submesh.SortCenterPosition = new Vector3(-sortCenterPosition.x, sortCenterPosition.z, -sortCenterPosition.y);
submesh.SortRadius = reader.ReadSingle();
submesh.Vertices = new Vector3[submesh.VertexCount];
submesh.Normals = new Vector3[submesh.VertexCount];
submesh.UVs = new Vector2[submesh.VertexCount];
submesh.UV2s = new Vector2[submesh.VertexCount];
Parallel.For(0, submesh.VertexCount, j =>
{
submesh.Vertices[j] = model.MeshData.Vertices[j + submesh.VertexStart];
submesh.Normals[j] = model.MeshData.Normals[j + submesh.VertexStart];
submesh.UVs[j] = model.MeshData.TexCoords[j + submesh.VertexStart];
submesh.UV2s[j] = model.MeshData.TexCoords2[j + submesh.VertexStart];
});
submesh.Triangles = new int[submesh.TriangleCount];
Parallel.For(0, submesh.TriangleCount, j =>
{
submesh.Triangles[j] = triangleList[j + submesh.TriangleStart];
});
model.Submeshes.Add(submesh);
}
}
}
