[Solved]Mouse and Touch Events

cocos2d-x C++
1

I’ve started to try and handle events but I get some strange behavior.

I cam across two sets of working ways to handle events, one on the

programmers guide and the other on games from scratch.

EventListenerMouse *me = EventListenerMouse::create();
me->onMouseDown = CC_CALLBACK_1(HelloWorld::onMouseDown, this);
me->onMouseUp   = CC_CALLBACK_1(HelloWorld::onMouseUp, this);
me->onMouseUp   = CC_CALLBACK_1(HelloWorld::onMouseMove, this);
_eventDispatcher->addEventListenerWithSceneGraphPriority(me,this);

void HelloWorld::onMouseDown(cocos2d::Event *ev) {
    EventMouse* e = (EventMouse*)ev;
    CCLOG("mouse down %f, %f",e->getLocation().x,e->getLocation().y);
}

void HelloWorld::onMouseMove(cocos2d::Event *ev) {
    EventMouse* e = (EventMouse*)ev;
    CCLOG("mouse move %f, %f",e->getCursorX(),e->getCursorY());
}

void HelloWorld::onMouseUp(cocos2d::Event *ev) {
    EventMouse* e = (EventMouse*)ev;
    CCLOG("mouse up %f, %f",e->getLocation().x,e->getLocation().y);
}

auto listener = EventListenerMouse::create();
   listener->onMouseDown = [](cocos2d::Event* event){

      try {
         EventMouse* mouseEvent = dynamic_cast<EventMouse*>(event);
         mouseEvent->getMouseButton();
         std::stringstream message;
         message << "Mouse event: Button: " << mouseEvent->getMouseButton() << "pressed at point (" <<
            mouseEvent->getLocation().x << "," << mouseEvent->getLocation().y << ")";
         MessageBox(message.str().c_str(), "Mouse Event Details");

      }
      catch (std::bad_cast& e){
         // Not sure what kind of event you passed us cocos, but it was the wrong one
         return;
      }
   };

   listener->onMouseMove = [](cocos2d::Event* event){
      // Cast Event to EventMouse for position details like above
      cocos2d::log("Mouse moved event");
   };

   listener->onMouseScroll = [](cocos2d::Event* event){
      cocos2d::log("Mouse wheel scrolled");
   };

   listener->onMouseUp = [](cocos2d::Event* event){
      cocos2d::log("Mouse button released");
   };

   _eventDispatcher->addEventListenerWithFixedPriority(listener, 1);

The way described in the programmers manual seems to only call onmousemove once, while the way described in the excerpt from games from scratch gets called every frame.

Is there a way to make the code from the programmers manual fire every frame?
What’s the best practice way to handle events now?

2

You have got me->onMouseUp set twice, the second time setting it to onMouseMove. So it should be:

me->onMouseMove   = CC_CALLBACK_1(HelloWorld::onMouseMove, this);

not

me->onMouseUp   = CC_CALLBACK_1(HelloWorld::onMouseMove, this);
1 Like
3

wow, a typo… my apologies for this.