New Event System

Unity Engine
1

Okay so I was stuck on Unity 4 for a while, didn’t want to upgrade because I was familiar with how 4 worked and didn’t feel like re-learning the new bits of 5.

I’ve finally upgraded to 5 and I’m royally confused.

I see they’ve reworked the UI systems, no more send message, I didn’t use it much anyway, no big deal. Where I get confused is the purpose of the new Event System. Should it be used for anything other than UI? Specifically, should I be using the event system to handle ALL all the input I used to handle via the old GetButtonDown() methods or is that now not necessary?

I guess I’m asking if the event system is meant to handle UI movements or all movements?

2

Mainly UI but it’s also a fairly powerful generic event system you can use to ease communication between objects.

No reason to use it instead of Input.GetButtonXYZ functions.

3

All the old stuff is still there. But to fully embrace the new stuff:

  • UI replaces all OnGUI
  • ExecuteEvents replaces SendMessage
  • OnMouseXXX is replaced with the EventSystem, PhysicsRaycaster and the various supported event interfaces