cocos2dx 3.x(让精灵随着重力感应的方向移动而移动)

 //
 //  GameScene.hpp
 //  HelloWord
 //
 //  Created by apple on 2017/1/7.
 //
 //

 #ifndef GameScene_hpp
 #define GameScene_hpp

 #include <stdio.h>
 #include "cocos2d.h"

 USING_NS_CC;

 class GameScene : public cocos2d::Layer
 {
 public:
     static cocos2d::Scene* createScene();

     virtual bool init();

     //重力感应回调函数
     void didAccelerate(Acceleration* acc, Event* event);

     CREATE_FUNC(GameScene);

 private:
     Size size;
     Sprite *sprite;
 };
 #endif /* GameScene_hpp */

 //
 //  GameScene.cpp
 //  HelloWord
 //
 //  Created by apple on 2017/1/7.
 //
 //

 #include "GameScene.hpp"
 USING_NS_CC;

 cocos2d::Scene* GameScene::createScene()
 {
     auto scene = Scene::create();   //创建一个场景
     auto layer = GameScene::create();   //创建一个图层
     scene->addChild(layer);
     return scene;
 }

 //初始化当前的图层
 bool GameScene::init()
 {
     if(!Layer::init())      //初始化父类
         return false;

     //获取屏幕大小
     size = Director::getInstance()->getVisibleSize();
     //auto size = Director::getInstance()->getWinSize();
     //添加一个图片精灵
     sprite = Sprite::create("CloseNormal.png");
     sprite->setPosition(Vec2(size.width/, size.height/));
     sprite->setTag();
     this->addChild(sprite);

     //开启重力感应
     Device::setAccelerometerEnabled(true);

     //创建事件监听对象
     auto listener = EventListenerAcceleration::create(CC_CALLBACK_2(GameScene::didAccelerate, this));

     //在事件监听器中注册
     _eventDispatcher->addEventListenerWithSceneGraphPriority(listener, this);

     return true;
 }

 void GameScene::didAccelerate(Acceleration* acc, Event* event)
 {
     //使精灵随重力感应移动
     auto sprite = this->getChildByTag();      //通过标签获取精灵

     auto pos = sprite->getPosition();

     pos.x += acc->x;
     pos.y += acc->y;
     //pos.y += acc->y * 10;     //调整精灵移动敏感度

     sprite->setPosition(pos);
 }