旋转式放缩消隐

 CCSprite* scrollGrassSprite = CCSprite::create("scrollgrass.png");
    scrollGrassSprite->setPosition(ccp(size.width/2-150, size.height/2-70));
    CCRotateBy* rotateBy = CCRotateBy::create(5, 2*360);
    CCScaleBy* scaleBy = CCScaleBy::create(5, 0.5);
    CCSpawn* spawn = CCSpawn::create(rotateBy, scaleBy, NULL);
    CCCallFuncN* removefunc = CCCallFuncN::create(this, callfuncN_selector(StartScene::removeScrollGrass));
    CCSequence* seq = CCSequence::create(spawn, removefunc, NULL);
    scrollGrassSprite->





runAction(seq);
    this->addChild(scrollGrassSprite);