1.关于COCOS2d的单例和导演类
//1.COCOS2d的常用单例
CCDirector *sharedDirector = [CCDirector sharedDirector];
CCSpriteFrameCache *SpritesharedCache = [CCSpriteFrameCache sharedSpriteFrameCache];
CCTextureCache *TextureCache = [CCTextureCache sharedTextureCache];
//CDAudioManager *sharedManager = [CDAudioManager sharedManager];
//SimpleAudioEngine *sharedEngine = [SimpleAudioEngine sharedEngine];
//2.CCDirector 导演类
//作用：访问和改变场景，访问2d的配置细节，访问视图，暂停，恢复，结束游戏，在UIKit和OPenGLEs之间转化坐标
//1.主程序启动并显示第一个场景
[[CCDirector sharedDirector]runWithScene:[HelloWorldLayer scene]];
//2 讲传入场景作为当前的场景
[[CCDirector sharedDirector]pushScene:[HelloWorldLayer scene]];
//3 运行待运行场景中的倒数第二个场景，当前场景被释放
[[CCDirector sharedDirector]popScene];
//4 直接使用新的场景更换当前的场景，当前场景被释放
[[CCDirector sharedDirector]replaceScene:[HelloWorldLayer scene]];
//5结束当前运行中的场景
[[CCDirector sharedDirector] end];
//6 暂停当前的场景
[[CCDirector sharedDirector]pause];
//7 恢复场景的运行
[[CCDirector sharedDirector]resume];
//8绘制场景
//-(void)draw;
//9讲UIKit坐标系中的坐标转换为OPENGL ES 坐标系中的坐标
UITouch *myTouch = [touches angObject];
CGPoint location = [myTouch locationInView:[myTouch view]];
location = [[CCDirector sharedDirector]convertToGL:location];
