void HelloWorld::addTarget(){    //首先初始化精灵    CCSprite *pTarget = CCSprite::create("Target.png");    CCSize winSize = CCDirector::sharedDirector()->getWinSize();    //计算可绘制的范围    int minY = pTarget->getContentSize().height/2;    int maxY = winSize.height - minY;    //计算可随机基数    int rangeY = maxY - minY;    //随机出的数*随机基数+半个身位 = 最后的坐标点    int actualY = (rand() % rangeY) + minY;    pTarget->setPosition(ccp(winSize.width + pTarget->getContentSize().width/2 ,actualY));    this->addChild(pTarget);    pTarget->setTag(1);    _targets->addObject(pTarget);    //计算移动速度 最慢4秒移动横屏 最快2秒    int minDuration = (int) 2.0;    int maxDuration = (int) 4.0;    int rangeDuration = maxDuration - minDuration;    int actualDuration = (rand() % rangeDuration) +minDuration;    //初始化耗时动作    CCFiniteTimeAction* actionMove =        CCMoveTo::create((float)actualDuration,        ccp(0 - pTarget->getContentSize().width/2,actualY));    CCFiniteTimeAction* actionMoveDone =        CCCallFuncN::create(this,        callfuncN_selector(HelloWorld::spriteMoveFinished));    //绑定动作    pTarget->runAction(CCSequence::create(actionMove,actionMoveDone,NULL));}

void HelloWorld::ccTouchesEnded(CCSet* touches, CCEvent* event){    CCTouch *touch = (CCTouch *)touches->anyObject();    CCPoint location = touch->getLocationInView();    location = CCDirector::sharedDirector()->convertToGL(location);    CCSize size = CCDirector::sharedDirector()->getWinSize();    CCSprite *pProjectile = CCSprite::create("Projectile.png");    pProjectile->setPosition(ccp(pHero->getContentSize().width/2,size.height/2));    int offX = location.x - pProjectile->getPosition().x;    int offY = location.y - pProjectile->getPosition().y;    if(offX <= 0) return;    //添加发子弹声音    CocosDenshion::SimpleAudioEngine::sharedEngine()->playEffect(                            "pew-pew-lei.wav");     this->addChild(pProjectile);    pProjectile->setTag(2);    _projectiles->addObject(pProjectile);    int realX = size.width +        (pProjectile->getContentSize().width/2);    float ratio = (float)offY / (float)offX;    int realY = (realX * ratio) + pProjectile->getPosition().y;    CCPoint realDest = ccp(realX,realY);    int offRealX = realX - pProjectile->getPosition().x;    int offRealY = realY - pProjectile->getPosition().y;    float length = sqrtf((offRealX * offRealX) + (offRealY*offRealY));        float velocity = 480/1;    float realMoveDuration = length/velocity;    pProjectile->runAction(CCSequence::create(        CCMoveTo::create(realMoveDuration,realDest)        ,CCCallFuncN::create(this,callfuncN_selector(HelloWorld::spriteMoveFinished))        ,NULL));}

void HelloWorld::spriteMoveFinished(CCNode* sender){    CCSprite *pSprite = (CCSprite *)sender;    this->removeChild(pSprite,true);    //当怪物走屏幕左边，显示失败界面    if (pSprite->getTag() == 1)    {        _targets->removeObject(pSprite);        GameOverScene *gameOverScene =(GameOverScene*) GameOverScene::create();        if(gameOverScene){            gameOverScene->getLabel()->setString("You Lose!");            CCScene *pScene = CCScene::create();            pScene->addChild(gameOverScene);            CCDirector::sharedDirector()->replaceScene(pScene);        }    }else if (pSprite->getTag() == 2)    {        _projectiles->removeObject(pSprite);    }}

void HelloWorld::update(float dt){    CCLOG("%f",dt);    CCArray *projectilesToDelete =        CCArray::create();    projectilesToDelete->retain();    //碰撞算法    //循环遍历 怪物的数字内的所有对象    for(int i = 0;i < _projectiles->count();i++)    {        //取出第i个对象 转化为精灵对象指针        CCSprite *projectile = (CCSprite *)_projectiles->objectAtIndex(i);        //获取这个对象的区域        CCRect projectileRect = CCRectMake(projectile->getPosition().x -(projectile->getContentSize().width/2),            projectile->getPosition().y - (projectile->getContentSize().height/2),            projectile->getContentSize().width,            projectile->getContentSize().height            );        //创建存放子弹的数组        CCArray *targetsToDelete = CCArray::create();        targetsToDelete->retain();        //循环遍历 怪物数组对象        for(int j = 0;j < _targets->count();j++)        {             //取出第j个对象的指针            CCSprite *target = (CCSprite *)_targets->objectAtIndex(j);            CCRect targetRect = CCRectMake(target->getPosition().x -(target->getContentSize().width/2),            target->getPosition().y - (target->getContentSize().height/2),            target->getContentSize().width,            target->getContentSize().height);            //如果两个范围有交集            if(projectileRect.intersectsRect(targetRect))            {                targetsToDelete->addObject(target);            }                    }        for(int k = 0;k < targetsToDelete->count();k++)        {            CCSprite *target =(CCSprite *)targetsToDelete->objectAtIndex(k);            _targets->removeObject(target);            this->removeChild(target,true);            _projectilesDestroyed++;            //打中超过4个怪物，跳转到获胜界面            if (_projectilesDestroyed > 4)            {                GameOverScene *gameOverScene =(GameOverScene*) GameOverScene::create();                if(gameOverScene){                    gameOverScene->getLabel()->setString("You Win!");                    CCScene *pScene = CCScene::create();                    pScene->addChild(gameOverScene);                    CCDirector::sharedDirector()->replaceScene(pScene);                }            }                        }        if(targetsToDelete->count() > 0)        {            projectilesToDelete->addObject(projectile);        }        //循环遍历 移除对象        for (  int i=0;i< projectilesToDelete->count();i++)        {            CCSprite* projectile =(CCSprite *)projectilesToDelete->objectAtIndex(i);            _projectiles->removeObject(projectile);            this->removeChild(projectile, true);        }    }}