cocos2dx生命周期函数执行顺序

1.使用pushScene顺序

	FirstScene onExitTransitionDidStart
    FirstScene onExit
    SecondScene onEnter
    SecondScene onEnterTransitionDidFinish

2.使用popScene顺序

	SecondeScene onExit
    SecondeScene cleanup
    FirstScene onEnter
    FirstScene onEnterTransitionDidFinish

3.使用replaceScene顺序

	FirstScene onExitTransitionDidStart
    FirstScene onExit
    FirstScene cleanup
    SecondeScene onEnter
    SecondeScene onEnterTransitionDidFinish

4.使用TransitionScene(过渡效果)顺序

	FirstScene onExitTransitionDidStart
    SecondeScene onEnter
    FirstScene onExit
    FirstScene cleanup
    SecondeScene onEnterTransitionDidFinish