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cocos版本:3.2
VS版本:VS2013
一、 添加事件监听一般步骤为:创建时间监听器-->增事件监听器-->用导演获取时间派发器将事件监听器添加进去。
二、需要注意的地方有两点:
1.多点触摸中的onTouchesBegan方法没有返回值。如果带返回值,不会报错,但是会报链接错误。
2.多点触摸中的传入参数和单点触摸的传入参数不同。
具体看以下代码:
1.单点触摸监听器的处理触摸方法:
std::function<bool(Touch*, Event*)> onTouchBegan; std::function<void(Touch*, Event*)> onTouchMoved; std::function<void(Touch*, Event*)> onTouchEnded; std::function<void(Touch*, Event*)> onTouchCancelled;
std::function<void(const std::vector<Touch*>&, Event*)> onTouchesBegan; std::function<void(const std::vector<Touch*>&, Event*)> onTouchesMoved; std::function<void(const std::vector<Touch*>&, Event*)> onTouchesEnded; std::function<void(const std::vector<Touch*>&, Event*)> onTouchesCancelled;
三、测试事件监听器
1.新建COCOS项目
2,删除HelloWorld::init中的无用代码
添加以下代码
TTFConfig tf("fonts/Marker Felt.ttf",36); Label *label = Label::createWithTTF(tf, "Cliked me"); label->setPosition(visibleSize / 2); addChild(label); EventListenerTouchOneByOne *listener = EventListenerTouchOneByOne::create(); listener->onTouchBegan = [](Touch *t, Event *e){ if (e->getCurrentTarget()->getBoundingBox().containsPoint(t->getLocation())) { log("onTouchBegan"); return true; } return false; }; listener->onTouchMoved = [label](Touch *t, Event *e){ log("onToucheMoved"); label->setPosition(t->getLocation()); }; EventListenerTouchAllAtOnce *listener1 = EventListenerTouchAllAtOnce::create(); listener1->onTouchesBegan = [](std::vector<Touch *>ts,Event *e){ log("onTouchesBegan"); }; Director::getInstance()->getEventDispatcher()->addEventListenerWithSceneGraphPriority(listener, label); Director::getInstance()->getEventDispatcher()->addEventListenerWithSceneGraphPriority(listener1, this);
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原文地址:http://blog.csdn.net/sen_blog/article/details/45887097