10.cocos2dx C++为Sprite添加触摸事件监听器
1.首先头文件定义事件处理的函数原型
1 private: 2 bool onTouchBegan(Touch* tTouch,Event* eEvent);//手指按下事件 3 void onTouchMoved(Touch* tTouch,Event* eEvent);//手指移动事件 4 void onTouchEnded(Touch* tTouch,Event* eEvent);//手指离开事件
2.实现原型
1 bool ShopItem::onTouchBegan(Touch* tTouch,Event* eEvent){ 2 if (sprite->getBoundingBox().containsPoint(tTouch->getLocation())){//判断触摸点是否在目标的范围内 3 4 /**这里为事件内容**/ 5 return true; 6 }else 7 return false; 8 } 9 } 10 11 void ShopItem::onTouchMoved(Touch* tTouch,Event* eEvent){ 12 /**这里为事件内容**/ 13 } 14 15 void ShopItem::onTouchEnded(Touch* tTouch,Event* eEvent){ 16 /**这里为事件内容**/ 17 }
3.绑定事件
1 auto listener = EventListenerTouchOneByOne::create(); 2 listener->onTouchBegan = CC_CALLBACK_2(ShopItem::onTouchBegan, this); 3 listener->onTouchMoved = CC_CALLBACK_2(ShopItem::onTouchMoved, this); 4 listener->onTouchEnded = CC_CALLBACK_2(ShopItem::onTouchEnded, this); 5 this->getEventDispatcher()->addEventListenerWithSceneGraphPriority(listener, sprite);