Ben, I already created classes for "physical" in my package, called: Gravity2D and Colision2D, I was thinking about it now: Gravity3D and Colision3D to Away3D, I am quite confident that for the proper functioning of the class "Colision3D" I have to create the class "Gravity3D" therefore, is that fact that the eixoZ work in perfect condition for collision it has to be linked to some serious, that should be the same value of collision, intende!
Hugs!
