Hello guys, I have try many to make many script with babylonjs and blender, but I have always different problem. So I come to ask you if you know a good tutorial who explain how load blender file (map and object), and use the gravity and collisions, move, all at the same time? I have find how to load blender file with this tutorial :http://blogs.msdn.com/b/eternalcoding/archive/2013/06/28/babylon-js-how-to-load-a-babylon-file-produced-with-blender.aspx, so the load it's ok. Without blender, all works fine, but with blender sometime collisions don't work, sometime gravity, so I don't undestand. Thank you very much for your help!