1 // 2 //  MainScene.cpp 3 //  helloworld 4 // 5 //  Created by apple on 16/11/8. 6 // 7 // 8  9 #include "MainScene.hpp"10 Scene * MainScene::createScene()11 {12      auto scene = Scene::create();    //创建层13     MainScene *layer = MainScene::create();14     scene->addChild(layer);15     return scene;16 }17 bool MainScene::init(){18     if (!Layer::init()) {19         return false;20     }21     22     23 //    MoveTo：把某一Sprite移动到某个位置24 //    MoveBy:把某一Sprite移动一段距离,它有一个方法reverse，它让对象按原路径返回25     26     27     /*28      *@MoveTo,移动到某个Point29      */30     Size size = Director::getInstance()->getWinSize();31     Sprite *spriteMoveTo = Sprite::create("snow.png");32     spriteMoveTo->setPosition(Vec2(size.width / 2.0f, size.height / 2.0f));33     this->addChild(spriteMoveTo, 1);34     35     ActionInterval *forward = MoveTo::create(4, Vec2(300, 300));36     spriteMoveTo->runAction(forward);37     38     39     /*40      *MoveBy,移动一段距离41      */42     Sprite *spriteMoveBy = Sprite::create("snow.png");43     spriteMoveBy->setPosition(Vec2(size.width / 4.0f, size.height / 4.0f));44     this->addChild(spriteMoveBy, 1);45     46     ActionInterval *forwardBy = MoveBy::create(2, Vec2(200, 300));47     ActionInterval *backBy = forwardBy->reverse();48     Action *action = Repeat::create(dynamic_cast
     
      (Sequence::create(forwardBy, backBy, NULL)), 4);49     spriteMoveBy->runAction(action);50     51     52     53     return true;54 }