1 // 2 // GameScence.hpp 3 // NotesDamo 4 // 5 // Created by apple on 16/10/23. 6 // 7 // 8 9 #ifndef GameScence_hpp 10 #define GameScence_hpp 11 12 #include <stdio.h> 13 #include "cocos2d.h" 14 15 class GameScence : public cocos2d::Layer 16 { 17 private: 18 //创建一个私有的精灵成员变量 19 cocos2d::Sprite * m_spriteGun; 20 public: 21 22 23 static cocos2d::Scene* createScene();//声明创建当前的层 24 25 virtual bool init();//声明初始化层实例函数。 26 27 28 29 bool onTouchBegan(cocos2d::Touch* touch, cocos2d::Event* event);//手势点击事件 30 31 32 CREATE_FUNC(GameScence);//CREATE_FUNC是cocos2d-x中定义的一个宏(作用是：创建一个静态函数"static create()"，该函数可以用来创建层)； 33 34 }; 35 #endif /* GameScence_hpp */
1 // 2 // GameScence.cpp 3 // NotesDamo 4 // 5 // Created by apple on 16/10/23. 6 // 7 // 8 9 #include "GameScence.hpp" 10 11 USING_NS_CC; 12 13 Scene* GameScence::createScene() 14 { 15 auto scene = Scene::create(); 16 17 auto layer = GameScence::create(); 18 19 scene->addChild(layer); 20 21 return scene; 22 } 23 24 GameScence::GameScence() 25 { 26 27 } 28 bool GameScence::init() 29 { 30 ////////////////////////////// 31 // 1. super init first 32 // 初始化父类 33 if ( !Layer::init() ) 34 { 35 return false; 36 } 37 38 39 m_spriteGun = Sprite::create(StringUtils::format("gun2_0.png")); 40 m_spriteGun->setPosition(240, 30); 41 this ->addChild(m_spriteGun); 42 43 //声明 44 auto listener = EventListenerTouchOneByOne::create(); 45 listener->setSwallowTouches(true); 46 47 //注册事件 48 listener->onTouchBegan = CC_CALLBACK_2(GameScence::onTouchBegan, this); 49 50 _eventDispatcher->addEventListenerWithSceneGraphPriority(listener, this); 51 52 53 return true; 54 } 55 56 57 bool GameScence::onTouchBegan(cocos2d::Touch* touch, cocos2d::Event* event) 58 { 59 60 touch->getLocation();// 获取当前点击的坐标 61 62 m_spriteGun->cocos2d::Node::setRotation(atan2((touch->getLocation().x-m_spriteGun->getPositionX()),(touch->getLocation().y-m_spriteGun->getPositionY()))*180/3.1415926);//改变弧度 后面加不加90要根据精灵的初始角度是怎样的 63 64 65 return true; 66 }