Cocos2d-x 3.0 场景切换

场景切换代码：

 auto scene = HelloWorld::createScene();  // 创建待切换的场景

 auto transition = TransitionZoomFlipY::create(1.0f, scene);  // 给场景包装动画特效

 Director::getInstance()->replaceScene(transition); //运用导演类来进行切换场景

场景切换特效：

 // 慢慢淡化到另一场景

 TransitionCrossFade::create(float t, cocos2d::Scene* scene);

 // 本场景变暗消失后另一场景慢慢出现

 TransitionFade::create(float duration, cocos2d::Scene* scene);

 // 本场景右上角到左下角方块消失到另一场景

 TransitionFadeBL::create(float t, cocos2d::Scene* scene);

 //本场景从上到下横条消失到另一场景

 TransitionFadeDown::create(float t, cocos2d::Scene* scene);

 //本场景左下角到右上角方块消失到另一场景

 TransitionFadeTR::create(float t, cocos2d::Scene* scene);

 //本场景从下到上横条消失到另一场景

 TransitionFadeUp::create(float t, cocos2d::Scene* scene);

 //本场景翻转消失到另一场景（斜上方）

 TransitionFlipAngular::create(float t, cocos2d::Scene* s, cocos2d::TransitionScene::Orientation o);

 //本场景翻转消失到另一场景（X轴）

 TransitionFlipX::create(float t, cocos2d::Scene* s, cocos2d::TransitionScene::Orientation o);

 //本场景翻转消失到另一场景（Y轴）

 TransitionFlipY::create(float t, cocos2d::Scene* s);

 //本场景翻转消失到另一场景（斜上方）

 TransitionZoomFlipAngular::create(float t, cocos2d::Scene* s, cocos2d::TransitionScene::Orientation o);

 //本场景翻转消失到另一场景（X轴）

 TransitionZoomFlipX::create(float t, cocos2d::Scene* s, cocos2d::TransitionScene::Orientation o);

 //本场景翻转消失到另一场景（Y轴）

 TransitionZoomFlipY::create(float t, cocos2d::Scene* s, cocos2d::TransitionScene::Orientation o);

 //另一场景由整体从下面出现

 TransitionMoveInB::create(float t, cocos2d::Scene* scene);

 //另一场景由整体从左面出现

 TransitionMoveInL::create(float t, cocos2d::Scene* scene);

 //另一场景由整体从上面出现

 TransitionMoveInT::create(float t, cocos2d::Scene* scene);

 //另一场景由整体从右面出现

 TransitionMoveInR::create(float t, cocos2d::Scene* scene);

 //本场景从左到右消失同时另一场景出现

 TransitionProgressHorizontal::create(float t, cocos2d::Scene* scene);

 //本场景从中间到四周消失同时另一场景出现

 TransitionProgressInOut::create(float t, cocos2d::Scene* scene);

 //本场景从四周到中间消失同时另一场景出现

 TransitionProgressOutIn::create(float t, cocos2d::Scene* scene);

 //本场景逆时针消失到另一场景

 TransitionProgressRadialCCW::create(float t, cocos2d::Scene* scene);

 //本场景顺时针消失到另一场景

 TransitionProgressRadialCW::create(float t, cocos2d::Scene* scene);

 //本场景从上到下消失同时另一场景出现

 TransitionProgressVertical::create(float t, cocos2d::Scene* scene);

 //本场景向上滑动到另一场景

 TransitionSlideInB::create(float t, cocos2d::Scene* scene);

 //本场景向右滑动到另一场景

 TransitionSlideInL::create(float t, cocos2d::Scene* scene);

 //本场景向左滑动到另一场景

 TransitionSlideInR::create(float t, cocos2d::Scene* scene);

 //本场景向下滑动到另一场景

 TransitionSlideInT::create(float t, cocos2d::Scene* scene);

 //本场景三矩形上下消失后另一场景三矩形上下出现

 TransitionSplitCols::create(float t, cocos2d::Scene* scene);

 //本场景三矩形左右消失后另一场景三矩形左右出现

 TransitionSplitRows::create(float t, cocos2d::Scene* scene);

 //本场景小方块消失到另一场景

 TransitionTurnOffTiles::create(float t, cocos2d::Scene* scene);

 //翻页切换，bool为true是向前翻。

 TransitionPageTurn::create(float t, cocos2d::Scene* scene, bool backwards);

 //本场景跳动消失后另一场景跳动出现

 TransitionJumpZoom::create(float t, cocos2d::Scene* scene);

 //本场景旋转消失后另一场景旋转出现

 TransitionRotoZoom::create(float t, cocos2d::Scene* scene);

 //本场景缩小切换到另一场景放大

 TransitionShrinkGrow::create(float t, cocos2d::Scene* scene);

 void Director::popScene(const std::function<void(Scene* &)>& callback)

 {

     CCASSERT(_runningScene != nullptr, "running scene should not null");

     _scenesStack.popBack();

     ssize_t c = _scenesStack.size();

     if (c == )

     {

         end();

     }

     else

     {

         _sendCleanupToScene = true;

         _nextScene = _scenesStack.at(c - );

         if(callback)

           callback(_nextScene);

     }

 }

 auto callback = [](Scene*& scene){scene = TransitionJumpZoom::create(1.0f, scene);};

 Director::getInstance()->popScene(callback);

Scene生命周期：