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cocos2dx自学之 事件监听,
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auto label = LabelTTF::create("click me!","Courier",30);
label->setPosition(visibleSize.width/2,visibleSize.height/2);
addChild(label);
auto listener = EventListenerTouchOneByOne::create(); //创建监听器
listener->onTouchBegan = [](Touch *touch,Event *event){ //设置监听函数
if(event->getCurrentTarget()->getBoundingBox().containsPoint(touch->getLocation())){ //判断点击范围是在label上
log("onTouched!!!!!!!!!!!!");
}
return true; //返回true才能出发事件传递
};
//事件传递
listener->onTouchMoved = [](Touch* touch,Event *event){ //拖动事件 onTouchEnded = 触摸弹起事件
log("onTouchmoved!");
return true;//返回 true 才可以继续传递事件
};
Director::getInstance()->getEventDispatcher()->addEventListenerWithSceneGraPHPriority(listener,label); //绑定监听事件 */
//多点触摸监听器******************************************
/*auto listener = EventListenerTouchAllAtOnce::create();
listener->onTouchesBegan = [](std::vector<Touch*> t,Event *event){ //单击事件
log("onTouchesBegan");
};
listener->onTouchesMoved = [](std::vector<Touch*> t,Event *event){ //多点同时触摸事件
log("touches moved,and touch count is%ld",t.size());
};
Director::getInstance()->getEventDispatcher()->addEventListenerWithSceneGraPHPriority(listener,this); */
/**************************** 传感器 *****************************************/
/*Device::setAccelerometerEnabled(true);//打开传感器侦听 传感器=重力感应?
auto listener = EventListenerAcceleration::create([](Acceleration *a,Event *event){
log("x:%g,y:%g,z:%g",a->x,a->y,a->z);
});
Director::getInstance()->getEventDispatcher()->addEventListenerWithSceneGraPHPriority(listener,this);*/
/************************** 按键监听 ************************************/
/*auto listener = EventListenerKeyboard::create();
listener->onKeyReleased = [](EventKeyboard::KeyCode code,Event *venet){ //监听按键事件
log("key:%d",code);
switch(code){
case EventKeyboard::KeyCode::KEY_BACKSPACE: //如果是后退键
Director::getInstance()->end(); //退出当前程序
break;
}
};
Director::getInstance()->getEventDispatcher()->addEventListenerWithSceneGraPHPriority(listener,this);