Main Question
I saw this Loading and Animating MD5 Models with OpenGL an old post explaining .md5mesh .md5anim files. Is there any similar alternate mechanisms?
Additional Questions
1.) Is there an open source tool or a Plug in for 3ds max to convert a .DXF file to such files which can be used in 3D OpenGL+DirectX game programming.
2.) If I am developing a game in this approach how to make these model files encrypted and make big single file which contains all this file, so that the user cannot crack/hack it?
3.) If I am providing an update via an online gaming server, then how to I update this models and keep it encrypted again?