So, most of the necessary Wintermute 3D code is now imported. Also, the .X loader is almost finished, meaning in particular that the animation data is loaded in and applied. Here is the current state in a video (rightclick -> play should start the video):
So basic animations are essentially working (although there could be buggy edge case which so far did not appear). Also path-finding seems to work already. On the other hand there are still some glitches like the model being visible in the initial screen, the teapot disappearing when reentering the front part of the scene (although it will reappear again if you just go towards the back and then to the front again), letters two far away, etc. .. .