CCProgressTimer学习

init(){    CCProgressTimer *timeBar = CCProgressTimer::create(CCSprite::create("battle/apple_bg.png"));    timeBar->setType(kCCProgressTimerTypeBar);    timeBar->setMidpoint(ccp(0, .5));    timeBar->setBarChangeRate(ccp(1, 0));    timeBar->setPercentage(100);    timeBar->setPosition(appleBg->getPosition() );    addChild(timeBar, 1, 2);    schedule(schedule_selector(self::onUpdateTimeLimit), 1.0);}onUpdateTimeLimit(){float percent = 100.0f * TimeLeft / TimeLimit;timeBar->setPercentage(percent);}