技能冷却

   CCSprite *s2 = CCSprite::create("pa1.png");

    s2->setPosition(ccp(200,200));

    addChild(s2,0);    

    CCSprite *s = CCSprite::create("pa2.png");

    CCProgressTimer *pt = CCProgressTimer::create(s);

    pt->setPosition(200,200);

    pt->setType(cocos2d::CCProgressTimerType(kCCProgressTimerTypeRadial));

    this->addChild(pt,1);

    CCProgressTo *t = CCProgressTo::create(8, 100);

    pt->runAction(CCRepeatForever::create(t));