说说这一家子，
CCNode是父亲，CCLayer和CCScene是他2个孩子，CCScene 负责和CCDirector打交道，负责管理CCNode 所有的孩子（这个CCNode不知道有多少孩子，孙子）
CCNode
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CCLayer CCScene
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CCNode核心属性和方法
class CC_DLL CCNode : public CCObject
{
CC_PROPERTY_READONLY(int, m_nZOrder, ZOrder)
CC_PROPERTY(float, m_fVertexZ, VertexZ) //设定Node的绘制排序 数值越小越先绘制
CC_PROPERTY(float, m_fRotation, Rotation) //旋转角度
float getScale(); //缩放比例，0。5是一半
void setScale(float scale);
CC_PROPERTY(float, m_fScaleX, ScaleX)
CC_PROPERTY(float, m_fScaleY, ScaleY)
CC_PROPERTY_PASS_BY_REF(CCPoint, m_tPosition, Position)
const CCPoint& getPositionLua(void);
void getPosition(float* x, float* y);
float getPositionX(void);
float getPositionY(void);
void setPositionX(float x); //设定坐标 （Opengl 坐标系）
void setPositionY(float y);
void setPosition(float x, float y);
void _setZOrder(int z);
CC_PROPERTY(float, m_fSkewX, SkewX)//设定扭曲角度
CC_PROPERTY(float, m_fSkewY, SkewY)
CC_PROPERTY_READONLY(CCArray*, m_pChildren, Children) //获取所有子节点
unsigned int getChildrenCount(void);
CC_PROPERTY_READONLY(CCCamera *, m_pCamera, Camera)//获取摄像机对象，通过他可以修改视口
CC_PROPERTY(CCGridBase *, m_pGrid, Grid)
protected:
bool m_bIsVisible; //是否绘制
public:
virtual bool isVisible();
virtual void setVisible(bool visible);
CC_PROPERTY_PASS_BY_REF(CCPoint, m_tAnchorPoint, AnchorPoint) //锚点是在进行旋转和缩放等动作时候的中心点
CC_PROPERTY_READONLY_PASS_BY_REF(CCPoint, m_tAnchorPointInPoints, AnchorPointInPoints)
CC_PROPERTY_PASS_BY_REF(CCSize, m_tContentSize, ContentSize) //节点的尺寸，不会因为变换而改变
bool m_bIsRunning; //是否正在运行
bool isRunning();
CC_PROPERTY(CCNode *, m_pParent, Parent) //父节点
bool m_bIgnoreAnchorPointForPosition;
bool isIgnoreAnchorPointForPosition();
void ignoreAnchorPointForPosition(bool isIgnoreAnchorPointForPosition);
CC_PROPERTY(int, m_nTag, Tag) //node编号，可以使用该tag来获取该node对象
CC_PROPERTY(void *, m_pUserData, UserData) //用来连接Box2d
CC_SYNTHESIZE_RETAIN(CCObject*, m_pUserObject, UserObject);
CC_SYNTHESIZE_RETAIN(CCGLProgram*, m_pShaderProgram, ShaderProgram);//Shader管理器
CC_SYNTHESIZE(int, m_nOrderOfArrival, OrderOfArrival);
CC_SYNTHESIZE(ccGLServerState, m_glServerState, GLServerState); //opengl管理器
CC_PROPERTY(CCActionManager*, m_pActionManager, ActionManager); //动作管理器
CC_PROPERTY(CCScheduler*, m_pScheduler, Scheduler); //任务管理器
inline int getScriptHandler() { return m_nScriptHandler; };
protected:
CCAffineTransform m_tTransform, m_tInverse; //坐标变换对象
bool m_bIsTransformDirty;
bool m_bIsInverseDirty;
bool m_bReorderChildDirty;
int m_nScriptHandler;
ccScriptType m_eScriptType;
private:
void childrenAlloc(void);
void insertChild(CCNode* child, int z);
void setZOrder(int z);
void detachChild(CCNode *child, bool doCleanup);
CCPoint convertToWindowSpace(const CCPoint& nodePoint);//转化为窗口坐标
public:
CCNode(void);
virtual ~CCNode(void);
const char* description(void);
CC_DEPRECATED_ATTRIBUTE static CCNode * node(void);
static CCNode * create(void); //节点创建方法
virtual void onEnter(); //开始绘制node
virtual void onEnterTransitionDidFinish();//动画场景播放完成开始绘制node
virtual void onExit(); //退出node
virtual void onExitTransitionDidStart();//
//--------------------------------------------------------------------------------------------------------------------------------------------
- ?~~ HelloWorld::onEnter
?~~ HelloWorld::onEnterTransitionDidFinish
?~~HelloWorld2::onEnter
?~~HelloWorld::onExit
?~~HelloWorld2::onEnterTransitionDidFinish
?~~HelloWorld2::onExit
?~~ HelloWorld::onEnter
?~~ HelloWorld::onEnterTransitionDidFinish - 如果有a和b两个CCScene,b的init，onEnter方法执行都比A的onExit在前，A的dealloc方法是在最后执行了
//-------------------------------------------------------------------------------------------------------------------------------------------
Script handler auto unregister after onEnter().
virtual void registerScriptHandler(int nHandler);
virtual void unregisterScriptHandler(void);
virtual void addChild(CCNode * child); // 添加子节点
virtual void addChild(CCNode * child, int zOrder);
virtual void addChild(CCNode * child, int zOrder, int tag);
void removeFromParentAndCleanup(bool cleanup);//从父节点移除自己并停止在这个Node上的所有Action
virtual void removeChild(CCNode* child, bool cleanup);
void removeChildByTag(int tag, bool cleanup);
virtual void removeAllChildrenWithCleanup(bool cleanup);//移除该Node所有子节点
CCNode * getChildByTag(int tag); //获取某个node
virtual void reorderChild(CCNode * child, int zOrder);
virtual void cleanup(void); //停止所有Schedu
virtual void draw(void); //绘图
virtual void visit(void); //提交到屏幕
void transform(void); //变换坐标
void transformAncestors(void);
CCRect boundingBox(void);
CCAction* runAction(CCAction* action); //运行动作
void stopAllActions(void); //停止所有动作
void stopAction(CCAction* action);
void stopActionByTag(int tag);
CCAction* getActionByTag(int tag);
unsigned int numberOfRunningActions(void);
bool isScheduled(SEL_SCHEDULE selector); //是否在执行任务
void scheduleUpdate(void); //执行update任务
void scheduleUpdateWithPriority(int priority);
void unscheduleUpdate(void);
void schedule(SEL_SCHEDULE selector); //执行指定任务
void schedule(SEL_SCHEDULE selector, float interval);//定时执行指定任务
void schedule(SEL_SCHEDULE selector, float interval, unsigned int repeat, float delay);//定时执行指定次数任务
void scheduleOnce(SEL_SCHEDULE selector, float delay);
void unschedule(SEL_SCHEDULE selector);//停止任务
void unscheduleAllSelectors(void); //停止所有任务
void resumeSchedulerAndActions(void); //恢复任务和动作
void pauseSchedulerAndActions(void); //暂停任务和动作
virtual CCAffineTransform nodeToParentTransform(void);//从当前坐标到父容器坐标
virtual CCAffineTransform parentToNodeTransform(void);//从父容器坐标到当前node坐标
virtual CCAffineTransform nodeToWorldTransform(void); //从当前node坐标到opengl世界坐标
virtual CCAffineTransform worldToNodeTransform(void);//从opengl世界坐标到node坐标
CCPoint convertToNodeSpace(const CCPoint& worldPoint);
CCPoint convertToWorldSpace(const CCPoint& nodePoint);
CCPoint convertToNodeSpaceAR(const CCPoint& worldPoint);
CCPoint convertToWorldSpaceAR(const CCPoint& nodePoint);
CCPoint convertTouchToNodeSpace(CCTouch * touch);
CCPoint convertTouchToNodeSpaceAR(CCTouch * touch);
};
NS_CC_END
#endif // __PLATFORM_CCNODE_H__
当执行Set方法执行某种行为，他的所有子节点都会执行
CCLayer 继承CCNode并增加了事件处理
class CC_DLL CCLayer : public CCNode, public CCTouchDelegate, public CCAccelerometerDelegate, public CCKeypadDelegate
{
public:
CCLayer();
virtual ~CCLayer();
bool init();
static CCLayer *create(void);
virtual void onEnter();
virtual void onExit();
virtual void onEnterTransitionDidFinish();
//////////////////////////////以下4个方法处理单点触摸 回调
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);
//////////////////////////////以下4个方法处理多点触摸 回调
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);
////////////////////////////下面方法处理传感器回掉
virtual void didAccelerate(CCAcceleration* pAccelerationValue) {CC_UNUSED_PARAM(pAccelerationValue);}
/** If isTouchEnabled, this method is called onEnter. Override it to change the way CCLayer receives touch events.
( Default:
CCTouchDispatcher::sharedDispatcher()->addStandardDelegate(this,0); )
Example:
void CCLayer::registerWithTouchDispatcher()
{
CCTouchDispatcher::sharedDispatcher()->addTargetedDelegate(this,INT_MIN+1,true);
}
@since v0.8.0
*/
virtual void registerWithTouchDispatcher(void);
/** Register script touch events handler */
void registerScriptTouchHandler(int nHandler, bool bIsMultiTouches = false, int nPriority = INT_MIN, bool bSwallowsTouches = false);
/** Unregister script touch events handler */
void unregisterScriptTouchHandler(void);
/** whether or not it will receive Touch events.
You can enable / disable touch events with this property.
Only the touches of this node will be affected. This "method" is not propagated to it's children.
@since v0.8.1
*/
bool isTouchEnabled();
void setTouchEnabled(bool value);
/** whether or not it will receive Accelerometer events
You can enable / disable accelerometer events with this property.
@since v0.8.1
*/
bool isAccelerometerEnabled();
void setAccelerometerEnabled(bool value);
/** whether or not it will receive keypad events
You can enable / disable accelerometer events with this property.
it's new in cocos2d-x
*/
bool isKeypadEnabled();
void setKeypadEnabled(bool value);
inline CCTouchScriptHandlerEntry* getScriptHandlerEntry() { return m_pScriptHandlerEntry; };
protected:
bool m_bIsTouchEnabled; //本图层是否处理触摸
bool m_bIsAccelerometerEnabled;//本图层是否处理传感器
bool m_bIsKeypadEnabled;//本图层是否处理按键
private:
// Script touch events handler
CCTouchScriptHandlerEntry* m_pScriptHandlerEntry;
int excuteScriptTouchHandler(int nEventType, CCTouch *pTouch);
int excuteScriptTouchHandler(int nEventType, CCSet *pTouches);
};
CCScene 是实现对一个整体窗口的根Node
一般使用如下：
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;
}