Quick Update
I hate to do this to you all, but I am changing the way this plug-in works. It will lose some of its ease, but this is for the better. I am making it mandatory that you create shapes before rigid bodies, and supplying, just like in native Havok, a vector (or in your case it will be three floats) and/or radius. This also means that you can use the same shape for every rigid body technically, which has its benefits.
As well, I have eight shape commands I have added. These commands transform shapes, so you can offset the way they work. These eight commands are as follows:
xeno set shape position ShapeID, X, Y, Z
xeno get shape position X ShapeID
xeno get shape position Y ShapeID
xeno get shape position Z ShapeID
xeno set shape rotation ShapeID, X, Y, Z
xeno get shape rotation X ShapeID
xeno get shape rotation Y ShapeID
xeno get shape rotation Z ShapeID
All of this will come into play with a rigid body editor I'll make eventually. I intend on making a decent editor for many features of this plug-in with managed C++ eventually. For now, however, I am more focused on finishing it.
And it is great to be able to work on it some now!
Edit
On another note, if anyone wants to make a logo or something for XenoPhysics that'd be awesome! And more models would be great! I would like this to start looking more professional, but I am a horrible artist.