CC 3.0 - EventCustom

[hananht]

How to implement EventCustom in CC 3.0?
Looks like the class is no longer available in this version. Should I use Event instead?
And how to pass setUserData like in 2.x.x versions?

[pandamicro]

You don’t need to do it anymore, you can add arguments when emit any event. The old EventCustom create lots of garbage and not easy to use.

https://docs.cocos.com/creator/3.0/manual/en/engine/event/event-emit.html#event-dispatching

[hananht]

@pandamicro

I saw this documentation but now I am confused with your answer here. The documentation stated that their is:

this.node.dispatchEvent( new Event.EventCustom('foobar', true) );

this.node.on('foobar', (event: EventCustom) => {
  event.propagationStopped = true;
});

As you said, EventCustom is not needed any more.
So I need to use xx.emit instead?

[pandamicro]

Oh, it’s two different things, and the documentation need to be updated.

• emit is for simple event emission
• dispatchEvent is for dispatch in a capture/bubble process

Currently in v3, we only support dispatchEvent for touch and mouse events. Normally, emit is enough for all cases. If you need to dispatch to parents node of the target node, you should extend the Event class for your own designed behavior.

[hananht]

@pandamicro Thanks… extends the class Event will be more than enough. Thank you!