一个适用于Android系统开发游戏所用的2D游戏引擎——Angle v1.0版本源码，代码文件较齐全，android 2d游戏开发相当不错的参考资料。-One for the Android system development game 2D game engine- Angle v1.0 version of the source code file a more complete Android 2D game development is pretty good reference.