CCScene and CClayer in core coco2d-x

I. CCScene

CCScene is a subclass of CCNode. It has one more feature than CCNode: it is used for its own anchor and is located in the center of the screen. In fact, it is just an abstract concept, essentially a CCNode

 

Define a new CCScene instance:

 

CCScene* HelloWorld::scene(){    CCScene * scene = NULL;    do     {        // 'scene' is an autorelease object        scene = CCScene::create();        CC_BREAK_IF(! scene);        // 'layer' is an autorelease object        HelloWorld *layer = HelloWorld::create();        CC_BREAK_IF(! layer);        // add layer as a child to scene        scene->addChild(layer);    } while (0);    // return the scene    return scene;}

Obtain and run CCScene

 

 

  // create a scene. it's an autorelease object    CCScene *pScene = HelloWorld::scene();    // run    pDirector->runWithScene(pScene);

 

Ii. CCLayer)

CCLayer is a subclass of CCNode. All functions of CCNode can be implemented and input can be processed (including touch screen and acceleration sensor), because CCLayer implements TouchEventsDelegate, acceleration Sensor proxy protocol, keyboard time proxy protocol, etc. The inheritance relationship of CCLayer is as follows: