auto listener = EventListenerTouchOneByOne::create();
listener->setSwallowTouches(_swallowsTouches);
listener->onTouchBegan = CC_CALLBACK_2(FightSceneModule::onTouchBegan, this);
listener->onTouchMoved = CC_CALLBACK_2(FightSceneModule::onTouchMoved, this);
listener->onTouchEnded = CC_CALLBACK_2(FightSceneModule::onTouchEnded, this);
Director::getInstance()->getEventDispatcher()->addEventListenerWithSceneGraphPriority(listener, this);
_touchListener = listener;
FightSceneModule继承layer,为什么这样设置.触摸没反应