Learning Cocos2d-x for WP8（9）——Sprite到哪，我做主

原文:Learning Cocos2d-x for WP8（9）——Sprite到哪，我做主

工程文件TouchesTest.h和TouchesTest.cpp

相关素材文件

事件驱动同样适用于cocos2d-x引擎，cocos2d-x的触屏事件可分为单点和多点触屏。

一般用到情况有：

Layer统一接受触屏消息，然后由程序根据需要分发给不同位置的sprite；

自定义可接收触屏事件的sprite。

Layer层实现触屏事件

1.开启触屏事件

在Layer层初始化的时候设置

setIsTouchEnabled( true );

2.重写（覆盖）父类CCLayer的方法

以下为CCLayer类的CCCtouch相关虚方法

    // 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);

    // default implements are used to call script callback if exist

    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);

Begin：触屏事件开始

Ended：触屏事件结束

Moved：触屏拖动

根据具体情况，改写自己需要的触屏事件方法。

选择其中的ccTouchesEnded方法，目的实现Sprite射击开火。

 void TouchesLayer::ccTouchesEnded(CCSet *pTouches, CCEvent *pEvent)

 {

     CCSetIterator it;

     CCTouch* touch;

     for( it = pTouches->begin(); it != pTouches->end(); it++)

     {

         touch = (CCTouch*)(*it);

         if(!touch)

             break;

         CCPoint location = touch->locationInView();

         location = CCDirector::sharedDirector()->convertToGL(location);

         //SGQSpriteBatchRepeatAnimation(role2,"Role2Run%d.png",10,0.2f,1);

         //CCMoveTo* role2Move=CCMoveTo::actionWithDuration(2,location);

         //role2->runAction(role2Move);

         CCSprite* Role2FireArrow=CCSprite::spriteWithSpriteFrameName("FireArrow0.png");

         Role2FireArrow->setPosition(role2->getPosition());

         Role2FireArrowBatch= CCSpriteBatchNode::batchNodeWithFile("Sprite/Role2/Role2FireArrow.png");//与CCSpriteFrameCache同一纹理

         Role2FireArrowBatch->addChild(Role2FireArrow);

         this->addChild(Role2FireArrowBatch,);

         Role2Fire(Role2FireArrow,location);

     }

 }

其中包含方法Role2Fire，实现动画效果

Role2Fire

 void TouchesLayer::Role2Fire(CCSprite* pSprite,CCPoint touchLocation)

 {

     //创建逐帧数组

     CCMutableArray<CCSpriteFrame*>* animFrames1=new CCMutableArray<CCSpriteFrame*>();

     char str1[]={};

     for(int i=;i<;i++)

     {

         sprintf(str1,"FireArrow%d.png",i);

         CCSpriteFrame* pFrame=cache->spriteFrameByName( str1 );

         animFrames1->addObject(pFrame);

     }

     CCMutableArray<CCSpriteFrame*>* animFrames2=new CCMutableArray<CCSpriteFrame*>();

     for(int i=;i<;i++)

     {

         sprintf(str1,"FireArrowExplode%d.png",i);

         CCSpriteFrame* pFrame=cache->spriteFrameByName( str1 );

         animFrames2->addObject(pFrame);

     }

     CCAnimation* animation1=CCAnimation::animationWithFrames(animFrames1,0.25f);

     CCAnimation* animation2=CCAnimation::animationWithFrames(animFrames2,0.1f);

     CCMoveTo* Role2FireArrowMoveTo=CCMoveTo::actionWithDuration(,touchLocation);

     CCCallFuncN* role3FunN=CCCallFuncN::actionWithTarget(this,callfuncN_selector(TouchesLayer::removeSprite));

     //float offY=touchLocation.y-this->getPosition().y;

     //float offX=touchLocation.x-this->getPosition().x;

     //float angleRadians=atan2f(offY,offX);

     //float angleDegrees=CC_RADIANS_TO_DEGREES(angleRadians);

     //float cocosAngle=-1*angleDegrees;

     //pSprite->setRotation(cocosAngle);

     pSprite->runAction(CCAnimate::actionWithAnimation(animation1,false));

     pSprite->runAction(CCSequence::actions(Role2FireArrowMoveTo,CCAnimate::actionWithAnimation(animation2,false),role3FunN,NULL));

     animFrames1->release();

 }

注意

坐标系转换，设备中是以左上角为坐标系原点，cococs2d-x以左下角为坐标系原点，所以，在获取坐标点后，需要转换坐标系。

        CCPoint location = touch->locationInView();

        location = CCDirector::sharedDirector()->convertToGL(location);

运行后，触摸屏幕后，Sprite会向着该触点发射开火。

Sprite自定义触屏事件

同样，在CCLayer上实现Touch的效果，使用Sprite自定义触屏事件也可。

1. 创建一个类继承CCSprite和Touch相关接口

要使sprite实现自定义touch必须继承相关的touch接口。

CCTouchDelegate下包含CCTargetedTouchDelegate和CCStandardTouchDelegate委托

2.CCTouch方法中处理事件函数

 void TouchesSprite::ccTouchesEnded(CCSet *pTouches, CCEvent *pEvent)

 {

     CCSetIterator it;

     CCTouch* touch;

     for( it = pTouches->begin(); it != pTouches->end(); it++)

     {

         touch = (CCTouch*)(*it);

         if(!touch)

             break;

         CCPoint location = touch->locationInView();

         location = CCDirector::sharedDirector()->convertToGL(location);

         TouchesRole2Running(this);

         CCMoveTo* moveTo=CCMoveTo::actionWithDuration(,location);

         runAction(moveTo);

     }

 }

其中，TouchesRole2Running实现动画，触摸屏幕后，Sprite会跑动到触点位置。

 void TouchesSprite::TouchesRole2Running(CCSprite* pSprite)

 {

     //创建逐帧数组

     CCMutableArray<CCSpriteFrame*>* animFrames1=new CCMutableArray<CCSpriteFrame*>();

     char str1[]={};

     for(int i=;i<;i++)

     {

         sprintf(str1,"Role2Run%d.png",i);

         CCSpriteFrame* pFrame=TouchesRole2Cache->spriteFrameByName( str1 );

         animFrames1->addObject(pFrame);

     }

     CCAnimation* animation1=CCAnimation::animationWithFrames(animFrames1,0.2f);

     pSprite->runAction(CCAnimate::actionWithAnimation(animation1,false));

     animFrames1->release();

 }

运行后，触摸屏幕后，Sprite会跑动到触点位置。

Lyaer层和Sprite层实现触摸屏事件，各有各的优点，都可实现触摸效果。

完整代码

TouchesTest.h

 #ifndef _TOUCHES_TEST_

 #define _TOUCHES_TEST_

 #include "cocos2d.h"

 using namespace cocos2d;

 //-------------------------------

 //

 //TouchesScene

 //

 //-------------------------------

 class TouchesScene:public CCScene

 {

 public:

     TouchesScene();

     ~TouchesScene();

     virtual void onEnter();

 };

 //----------------------------

 //

 //TouchesSprite

 //

 //----------------------------

 class TouchesSprite:public CCSprite,public CCStandardTouchDelegate

 {

 public:

     TouchesSprite();

     ~TouchesSprite();

     static TouchesSprite* SGQSpriteWithSpriteFrameName(const char* spriteFrameName);

 public:

     virtual void onEnter();

     //virtual void ccTouchEnded(CCTouch* touch, CCEvent* event);//ccTouchEnded无效，触摸无反应

     virtual void ccTouchesEnded(CCSet *pTouches, CCEvent *pEvent);

     CCSpriteFrameCache* TouchesRole2Cache;

     void TouchesRole2Running(CCSprite* pSprite);

 };

 //------------------------------

 //

 //TouchesLayer

 //

 //------------------------------

 class TouchesLayer:public CCLayer

 {

 public:

     TouchesLayer();

     ~TouchesLayer();

     //ccTouchEnded出现BUG，触摸无反应

     //virtual void ccTouchEnded(CCTouch *pTouch, CCEvent *pEvent);

     virtual void ccTouchesEnded(CCSet *pTouches, CCEvent *pEvent);

     void Role2Standing(CCSprite* pSprite);

     void Role2Fire(CCSprite* pSprite,CCPoint touchLocation);

     void TouchesRole2Standing(CCSprite* pSprite);

     void removeSprite(CCNode* pSender);

 private:

     CCSprite* role2;

     TouchesSprite* touchesRole2;

     CCSpriteFrameCache* cache;

     CCSpriteBatchNode* Role2FireArrowBatch;

 };

 #endif

TouchesTest.cpp

 #include "pch.h"

 #include "Classes\TouchesTest.h"

 //------------------------------------

 //

 //TouchesLayer

 //

 //------------------------------------

 TouchesLayer::TouchesLayer()

 {

     setIsTouchEnabled( true );//开启触屏事件

     CCSize s=CCDirector::sharedDirector()->getWinSize();

     //Layer层Touches

     cache=CCSpriteFrameCache::sharedSpriteFrameCache();

     cache->addSpriteFramesWithFile("Sprite/Role2/Role2.plist","Sprite/Role2/Role2.png");

     cache->addSpriteFramesWithFile("Sprite/Role2/Role2FireArrow.plist","Sprite/Role2/Role2FireArrow.png");

     role2=CCSprite::spriteWithSpriteFrameName("Role2Stand0.png");

     role2->setPosition(CCPointMake(s.width/,s.height/));

     CCSpriteBatchNode* spritebatch1 = CCSpriteBatchNode::batchNodeWithFile("Sprite/Role2/Role2.png");//与CCSpriteFrameCache同一纹理

     spritebatch1->addChild(role2);

     this->addChild(spritebatch1,);

     Role2Standing(role2);

     //Sprite层Touches

     touchesRole2=TouchesSprite::SGQSpriteWithSpriteFrameName("Role2Stand0.png");

     touchesRole2->setPosition(CCPointMake(,s.height-));

     CCSpriteBatchNode* spritebatch2 = CCSpriteBatchNode::batchNodeWithFile("Sprite/Role2/Role2.png");//与CCSpriteFrameCache同一纹理

     spritebatch2->addChild(touchesRole2);

     this->addChild(spritebatch2,);

     TouchesRole2Standing(touchesRole2);

 }

 TouchesLayer::~TouchesLayer()

 {}

 void TouchesLayer::Role2Standing(CCSprite* pSprite)

 {

         //创建逐帧数组

     CCMutableArray<CCSpriteFrame*>* animFrames1=new CCMutableArray<CCSpriteFrame*>();

     char str1[]={};

     for(int i=;i<;i++)

     {

         sprintf(str1,"Role2Stand%d.png",i);

         CCSpriteFrame* pFrame=cache->spriteFrameByName( str1 );

         animFrames1->addObject(pFrame);

     }

     CCAnimation* animation1=CCAnimation::animationWithFrames(animFrames1,0.2f);

     pSprite->runAction(CCRepeatForever::actionWithAction(CCAnimate::actionWithAnimation(animation1,false)));

     animFrames1->release();

 }

 void TouchesLayer::TouchesRole2Standing(CCSprite* pSprite)

 {

     //创建逐帧数组

     CCMutableArray<CCSpriteFrame*>* animFrames1=new CCMutableArray<CCSpriteFrame*>();

     char str1[]={};

     for(int i=;i<;i++)

     {

         sprintf(str1,"Role2Stand%d.png",i);

         CCSpriteFrame* pFrame=cache->spriteFrameByName( str1 );

         animFrames1->addObject(pFrame);

     }

     CCAnimation* animation1=CCAnimation::animationWithFrames(animFrames1,0.2f);

     pSprite->runAction(CCRepeatForever::actionWithAction(CCAnimate::actionWithAnimation(animation1,false)));

     animFrames1->release();

 }

 /*

 ccTouchEnded出现BUG，触摸无反应

 */

 //void TouchesLayer::ccTouchEnded(CCTouch *pTouch, CCEvent *pEvent)

 //{

 //    CCPoint location=pTouch->locationInView();

 //    location=CCDirector::sharedDirector()->convertToGL(location);

 //

 //    CCMoveTo* moveTo=CCMoveTo::actionWithDuration(3,location);

 //    role->runAction(moveTo);

 //}

 void TouchesLayer::ccTouchesEnded(CCSet *pTouches, CCEvent *pEvent)

 {

     CCSetIterator it;

     CCTouch* touch;

     for( it = pTouches->begin(); it != pTouches->end(); it++)

     {

         touch = (CCTouch*)(*it);

         if(!touch)

             break;

         CCPoint location = touch->locationInView();

         location = CCDirector::sharedDirector()->convertToGL(location);

         //SGQSpriteBatchRepeatAnimation(role2,"Role2Run%d.png",10,0.2f,1);

         //CCMoveTo* role2Move=CCMoveTo::actionWithDuration(2,location);

         //role2->runAction(role2Move);

         CCSprite* Role2FireArrow=CCSprite::spriteWithSpriteFrameName("FireArrow0.png");

         Role2FireArrow->setPosition(role2->getPosition());

         Role2FireArrowBatch= CCSpriteBatchNode::batchNodeWithFile("Sprite/Role2/Role2FireArrow.png");//与CCSpriteFrameCache同一纹理

         Role2FireArrowBatch->addChild(Role2FireArrow);

         this->addChild(Role2FireArrowBatch,);

         Role2Fire(Role2FireArrow,location);

     }

 }

 void TouchesLayer::Role2Fire(CCSprite* pSprite,CCPoint touchLocation)

 {

     //创建逐帧数组

     CCMutableArray<CCSpriteFrame*>* animFrames1=new CCMutableArray<CCSpriteFrame*>();

     char str1[]={};

     for(int i=;i<;i++)

     {

         sprintf(str1,"FireArrow%d.png",i);

         CCSpriteFrame* pFrame=cache->spriteFrameByName( str1 );

         animFrames1->addObject(pFrame);

     }

     CCMutableArray<CCSpriteFrame*>* animFrames2=new CCMutableArray<CCSpriteFrame*>();

     for(int i=;i<;i++)

     {

         sprintf(str1,"FireArrowExplode%d.png",i);

         CCSpriteFrame* pFrame=cache->spriteFrameByName( str1 );

         animFrames2->addObject(pFrame);

     }

     CCAnimation* animation1=CCAnimation::animationWithFrames(animFrames1,0.25f);

     CCAnimation* animation2=CCAnimation::animationWithFrames(animFrames2,0.1f);

     CCMoveTo* Role2FireArrowMoveTo=CCMoveTo::actionWithDuration(,touchLocation);

     CCCallFuncN* role3FunN=CCCallFuncN::actionWithTarget(this,callfuncN_selector(TouchesLayer::removeSprite));

     //float offY=touchLocation.y-this->getPosition().y;

     //float offX=touchLocation.x-this->getPosition().x;

     //float angleRadians=atan2f(offY,offX);

     //float angleDegrees=CC_RADIANS_TO_DEGREES(angleRadians);

     //float cocosAngle=-1*angleDegrees;

     //pSprite->setRotation(cocosAngle);

     pSprite->runAction(CCAnimate::actionWithAnimation(animation1,false));

     pSprite->runAction(CCSequence::actions(Role2FireArrowMoveTo,CCAnimate::actionWithAnimation(animation2,false),role3FunN,NULL));

     animFrames1->release();

 }

 void TouchesLayer::removeSprite(CCNode* pSender)

 {

     this->removeChild(Role2FireArrowBatch,true);

 }

 //------------------------------------

 //

 //TouchesSprite

 //

 //------------------------------------

 TouchesSprite::TouchesSprite()

 {

     TouchesRole2Cache=CCSpriteFrameCache::sharedSpriteFrameCache();

     TouchesRole2Cache->addSpriteFramesWithFile("Sprite/Role2/Role2.plist","Sprite/Role2/Role2.png");

 }

 TouchesSprite::~TouchesSprite()

 {}

 TouchesSprite* TouchesSprite::SGQSpriteWithSpriteFrameName(const char* spriteFrameName)

 {

     TouchesSprite* pSprite=new TouchesSprite();

     pSprite->initWithSpriteFrameName(spriteFrameName);

     return pSprite;

 }

 void TouchesSprite::onEnter()

 {

     //CCTouchDispatcher::sharedDispatcher()->addTargetedDelegate(this, 0, true);//ccTouchEnded无效

     CCTouchDispatcher::sharedDispatcher()->addStandardDelegate(this,);

     CCSprite::onEnter();

 }

 //ccTouchEnded无效

 //void TouchesSprite::ccTouchEnded(CCTouch* touch, CCEvent* event)

 //{

 //    CCPoint location=touch->locationInView();

 //    location=CCDirector::sharedDirector()->convertToGL(location);

 //

 //    CCMoveTo* moveTo=CCMoveTo::actionWithDuration(3,location);

 //    runAction(moveTo);

 //}

 void TouchesSprite::ccTouchesEnded(CCSet *pTouches, CCEvent *pEvent)

 {

     CCSetIterator it;

     CCTouch* touch;

     for( it = pTouches->begin(); it != pTouches->end(); it++)

     {

         touch = (CCTouch*)(*it);

         if(!touch)

             break;

         CCPoint location = touch->locationInView();

         location = CCDirector::sharedDirector()->convertToGL(location);

         TouchesRole2Running(this);

         CCMoveTo* moveTo=CCMoveTo::actionWithDuration(,location);

         runAction(moveTo);

     }

 }

 void TouchesSprite::TouchesRole2Running(CCSprite* pSprite)

 {

     //创建逐帧数组

     CCMutableArray<CCSpriteFrame*>* animFrames1=new CCMutableArray<CCSpriteFrame*>();

     char str1[]={};

     for(int i=;i<;i++)

     {

         sprintf(str1,"Role2Run%d.png",i);

         CCSpriteFrame* pFrame=TouchesRole2Cache->spriteFrameByName( str1 );

         animFrames1->addObject(pFrame);

     }

     CCAnimation* animation1=CCAnimation::animationWithFrames(animFrames1,0.2f);

     pSprite->runAction(CCAnimate::actionWithAnimation(animation1,false));

     animFrames1->release();

 }

 //------------------------------------

 //

 //TouchesScene

 //

 //------------------------------------

 TouchesScene::TouchesScene()

 {}

 TouchesScene::~TouchesScene()

 {}

 void TouchesScene::onEnter()

 {

     CCScene::onEnter();

     CCLayer* touchesLayer=new TouchesLayer();

     addChild(touchesLayer);

     touchesLayer->release();

 }

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