In order to be helped to the coding, can you upload your engine, including model files extention used.... I'm not a genius, but I've some knowledge in c, c++. I use visual studio (express version). I use classical libraires for games (open AL, sdl ,dx.....). For models I use C4d, blender and other to convert files, so if you need help I can help you. what extention did you choose for the 3d models? (sorry if my expression is not great, I'm french...)