详细介绍了cocos2d的各种类及方法，不但清晰的表明了类的继承关系，还介绍了类的方法及其使用，是非常实用的参考工具书。-Cocos2d described in detail the various types and methods, not only clearly shows the class hierarchy, but also introduces the class methods and their use is a very useful reference tool.