cocos2d 碰撞检测

    CCSprite* sp1=CCSprite::create("s_1.png");
    sp1->setPosition(ccp(size.width/2,size.height/2));
    addChild(sp1);

    CCSprite* sp2=CCSprite::create("s_2.png");
    sp2->setPosition(ccp(size.width/2,size.height/2));
    addChild(sp2);

    if(sp1->boundingBox().intersectsRect(sp2->boundingBox()))
    {
        CCLOG("collision!!!!");
    }else {
        CCLOG("nothing");
    }