cocos2d-x 矩形碰撞检测

bool HelloWorld::init()  

{  

    //////////////////////////////  

    // 1. super init first  

    if ( !CCLayer::init() )  

    {  

        return false;  

    }  

  

      

    CCSprite* sp1 = CCSprite::create("Icon.png");  

    sp1->setPosition(ccp(200, 160));  

    addChild(sp1, 0, 1);  

      

    CCSprite* sp2 = CCSprite::create("Icon.png");  

    sp2->setPosition(ccp(300, 160));  

    addChild(sp2, 0, 2);  

      

    CCLabelTTF* label = CCLabelTTF::create("没有发生碰撞", "Thonburi",24);  

    label->setPosition(ccp(240, 280));  

    addChild(label, 1, 3);  

      

      

    return true;  

}  

  

  

bool HelloWorld::ccTouchBegan(cocos2d::CCTouch *touch, cocos2d::CCEvent *event)  

{  

    CCSprite* sp1 = (CCSprite*)getChildByTag(1);  

    sp1->setPosition(touch->getLocation());  

    return true;  

}  

  

void HelloWorld::ccTouchMoved(cocos2d::CCTouch *touch, cocos2d::CCEvent *event)  

{  

    CCSprite* sp1 = (CCSprite*) getChildByTag(1);  

    sp1->setPosition(touch->getLocation());  

      

    CCSprite* sp2 = (CCSprite*)getChildByTag(2);  

      

    CCLabelTTF* label = (CCLabelTTF*) getChildByTag(3);  

      

    //碰撞检测，矩形碰撞  

    if((sp1->boundingBox()).intersectsRect(sp2->boundingBox()))  

    {  

        label->setString("碰撞啦");  

    }else  

    {  

        label->setString("还是没有碰撞");  

    }  

  

}  

  

void HelloWorld::ccTouchEnded(cocos2d::CCTouch *touch, cocos2d::CCEvent *event)  

{  

      

}  

  

void HelloWorld::onEnter()  

{  

    CCDirector::sharedDirector()->getTouchDispatcher()->addTargetedDelegate(this, 0, true);  

    CCLayer::onEnter();  

}  

  

  

void HelloWorld::onExit()  

{  

    CCDirector::sharedDirector()->getTouchDispatcher()->removeDelegate(this);  

    CCLayer::onExit();  

}