I'm making a physics simulator in C++. After I went to GDC 2012, I got excited to play with OpenGL again, so I decided to pick up on this project, which I'd read up a bit on last year but hadn't had the time to really sink my teeth into it. I have collision detection all worked out and now I just need to finish off the physics simulation itself. After that, all that remains is to clean up the code and make the it fun to actually play with. I'll have to add controls for picking up items and tossing them around, and make it easy to add new elements to the environment.The code is on GitHub.