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Cocos2dx:CCLayer

lastmod 2018-08-17created 2017-11-101 edits

Features

  • Has the size of a drawable area and defines how drawing is implemented.
  • Can be rendered overlapping other Layers semi-transparently
  • A class that implements an Event Handler (an Event propagates until a specific Layer receives and handles it)
  • cocos2D predefines useful CCLayers (menu: CCMenu, color: CCColorLayer, multiplexer: CCMultiplexLayer, ... and of course you can implement a user-defined CCLayer)
  • Since it is a SubClass of CCNode, it can be transformed by Actions.

Scene creation and destruction order

The method call order of CCLayer is as follows.

  1. Constructor.
  2. virtual bool init();
  3. virtual void onEnter();
  4. virtual void onEnterTransitionDidFinish();
  5. virtual void onExit();
  6. Destructor.

Mouse click events

default implements are used to call script callback if exist 

virtual bool ccTouchBegan(CCTouch *pTouch, CCEvent *pEvent);
virtual void ccTouchMoved(CCTouch *pTouch, CCEvent *pEvent);
virtual void ccTouchEnded(CCTouch *pTouch, CCEvent *pEvent);
virtual void ccTouchCancelled(CCTouch *pTouch, CCEvent *pEvent);
virtual void ccTouchesBegan(CCSet *pTouches, CCEvent *pEvent);
virtual void ccTouchesMoved(CCSet *pTouches, CCEvent *pEvent);
virtual void ccTouchesEnded(CCSet *pTouches, CCEvent *pEvent);
virtual void ccTouchesCancelled(CCSet *pTouches, CCEvent *pEvent);

See also

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