In June 2012, I gave a two hour presentation on iPhone programming, during which I live-coded the beginning of a small sandbox app displaying the capabilities and use patterns of Box2D and Cocos2D, a pair of C++/Obj-C game creation libraries. The source code for the app is available on my github account, github.com/emmett9001/iphone-sandbox

This video is a screencast of that presentation, starting from about five minutes in, when I remembered to start the screen capture. Thanks for watching!

Since it starts from a little after the explanation: download Cocos2D and start the Cocos2d/Box2d template project in XCode. If you make your init method look like it does in the opening screen of this video, you should be fine to follow along. Email me if you have questions about this presentation at emmett {dot} butler 321 {at} gmail {dot} com