public static void AddCollision(this DynamicPrimitive dynamicPrimitive, Microsoft.Xna.Framework.Graphics.Model model, Matrix?world, Color color)
{
if (bones == null || bones.Length < model.Bones.Count)
{
bones = new Matrix[model.Bones.Count];
}
model.CopyAbsoluteBoneTransformsTo(bones);
Matrix transform = world.HasValue ? world.Value : Matrix.Identity;
ModelTag tag = model.Tag as ModelTag;
// Add collision tree
if (tag != null && tag.Collision != null)
{
transform = bones[model.Meshes[0].ParentBone.Index] * transform;
Octree <bool> tree = tag.Collision.CollisionTree;
tree.Traverse(node =>
{
if (!node.hasChildren && node.value)
{
dynamicPrimitive.AddSolidBox(node.bounds, transform, color);
}
return(TraverseOptions.Continue);
});
}
// Add collision sphere
else
{
for (int i = 0; i < model.Meshes.Count; ++i)
{
var mesh = model.Meshes[i];
dynamicPrimitive.AddSolidSphere(mesh.BoundingSphere, 18, bones[mesh.ParentBone.Index] * transform, color);
}
}
}