Convert Obj-2/Cocos2D to pure C/C++ OpenGL ES

I would like to have this sample project converted to plain C/C++ and OpenGL ES (1.1-2.0): [login to view URL] (A Tiny-Wings/Cocos 2D howto project). The sample project already includes all the logic and OpenGL ES, but it is mixed with the Cocos 2D implementation. Basically, the Objective-C and Cocos 2D should be stripped, keeping the same functionality but with a clean and portable C/C++ OpenGL ES implementation for iOS, without the usage of any other third party game engines.