private static void ExtractWMOM2s(MapObjectDefinition wmo, WMORoot root, TileModels tileModels)
{
var setIndices = new List<int> { 0 };
if (wmo.DoodadSet != 0) setIndices.Add(wmo.DoodadSet);
foreach (var index in setIndices)
{
var set = root.DoodadSets[index];
for (var k = 0; k < set.InstanceCount; k++)
{
var dd = root.DoodadDefinitions[(int)set.FirstInstanceIndex + k];
if (string.IsNullOrEmpty(dd.FilePath)) continue;
var model = ExtractModel(wmo, dd);
if (model.Vertices.Length < 1) continue;
tileModels.Models.Add(model);
}
}
}
private static TileModel TransformM2Model(MapObjectDefinition wmo, DoodadDefinition definition, M2Model m2model)
{
var model = new TileModel
{
Vertices = new Vector3[m2model.BoundingVertices.Length]
};
var origin = new Vector3(-definition.Position.X, definition.Position.Z, definition.Position.Y);
var wmoOrigin = CorrectWMOOrigin(wmo.Position);
var rotation = definition.Rotation;
var rotateY = Matrix.CreateRotationY((wmo.OrientationB - 90) * RadiansPerDegree);
for (var i = 0; i < m2model.BoundingVertices.Length; i++)
{
var vector = m2model.BoundingVertices[i];
var rotatedVector = Vector3.Transform(vector, rotation);
rotatedVector = TransformToIntermediateCoords(rotatedVector);
var finalModelVector = rotatedVector + origin;
var rotatedWMOVector = Vector3.Transform(finalModelVector, rotateY);
var finalWMOVector = rotatedWMOVector + wmoOrigin;
model.Vertices[i] = finalWMOVector;
}
// Add the triangle indices to the model
model.Triangles = new Index3[m2model.BoundingTriangles.Length];
for (var i = 0; i < m2model.BoundingTriangles.Length; i++)
{
var tri = m2model.BoundingTriangles[i];
model.Triangles[i] = new Index3
{
Index0 = (short)tri[2],
Index1 = (short)tri[1],
Index2 = (short)tri[0]
};
}
// Calculate the boundingbox
model.Bounds = new BoundingBox(model.Vertices);
return model;
}
private static TileModel ExtractModel(MapObjectDefinition wmo, DoodadDefinition definition)
{
var filePath = definition.FilePath;
var m2model = ExtractM2Model(filePath);
return TransformM2Model(wmo, definition, m2model);
}