基本动作事件

1：执行某个动作后回调函数

    MoveTo* moveTo=MoveTo::create(0.3, Vec2(visibleSize.x, visibleSize.y));

    auto sequence=Sequence::create(moveTo,CallFunc::create(this,callfunc_selector(MainScene::moveToOver)), NULL);

    sprite->runAction(sequence);

2：颜色渐变(变深变浅)

    auto fadein=FadeIn::create(1);

    auto fadeout=FadeOut::create(1);