In this parti’ll describe how you can run your interface on base of game objects move. Every code for running your game main windows,should be added in EAGLVIew class. in opengles is better that you add more windows to games for performing menus and games and etc but in this project it isn’t necessary .In project that we build before you know that ES1Rendere and ES2Renderer class have code for render engine in opengles1 and opengles2 .All new Iphone device support opengles2. Now we want control speed of colored box (see in previous project).we add two lable and button to windows like this image Now we define two...