CCEaseElasticOut调整速度和振幅

pSprite->setAnchorPoint(CCPoint(0,0));
        pSprite->setPosition(CCPoint(300,700));
        CCFiniteTimeAction* pAcion = CCEaseElasticOut::actionWithAction(
            CCMoveTo::create(1.0f,CCPoint(300,300)),0.6f);//通过第二个参数来调整振幅，或者速度，值越大越慢振幅越小
        pSprite->runAction( CCRepeatForever::create(
            (CCActionInterval *)CCSequence::create(pAcion,CCMoveTo::create(0.5f,ccp(300,700)),
            NULL)));