With Input Manager becoming deprecated after Unity 6.3, your scripts using Input.GetKey, Input.mousePosition, or GetMouseButtonDown will need to change. Modern Input System covers all these, and is just as simple for basic needs! Check out my cheat sheet to see how easy it is to convert your code to stay up to date. BUT for OnMouseEnter or similar MonoBehaviour callbacks they do NOT work with the Input System! You'll need to switch to event interfaces like IPointerEnterHandler, plus make sure you've got a Physics Raycaster & EventSystem in your scene. So upgrading that part is a bit trickier, but the rest are easy.

@UnityCodeMonkey Ah yes, the classic "We've made this system better by requiring you to type twice as much to do the same thing"

@UnityCodeMonkey Rewired plugin changed my life.

@UnityCodeMonkey If its so easy, why aren't there tools that apply this change automatically?

@UnityCodeMonkey Does that mean that the old InputSystem becomes unusable? I like to use it for debugging controls during development or writing Engine Tools. I dont like the new one at all, it's so much boilercode here. For real inputsystems I am still using Rewired though.

@UnityCodeMonkey Do I need to add a Physics Raycaster component to the MainCamera?

@UnityCodeMonkey Deprecating these old Input systems is fine. Removing them, is not. Unity should bite the bullet and acknowledge this as tech debt they have to pay... or make a clean break & break everything. UE did a similar move with their input system and it broke way too many examples.

@UnityCodeMonkey had to do this recently with old project, was pulling my hair trying to figure it all out 😭

@UnityCodeMonkey I noticed in 6.3 that InputActions seem to be disabled by default and need explicit enabling, like, "action_click.Enable();" Going to be tricky to adapt my code after 6.3.

@UnityCodeMonkey Thank you for keeping us updated with this kind of stuff! Some weeks ago I tried to set this up, with the on screen buttons that comes with the package, and I noticed it was changing between virtual gamepad, clicks and keyboard. Didn't work, so at the very end, I removed them.

@UnityCodeMonkey This is bad advice. Setting up the input system with action maps isn’t all that hard, and a much more reliable way to use it. Rather show people how to use it properly. The benefits far outweigh the minimal extra complexity.

@UnityCodeMonkey Thanks for the update and cheat sheet!

@UnityCodeMonkey I lost over 10 fps with my game on version 6.3 LTS, so I'll stick with 6.1, it's better.

@UnityCodeMonkey I could be wrong but I believe you also need a null check before accessing as ie current keyboard could be null where it would’ve just returned false before

@UnityCodeMonkey Well, good. :P

@UnityCodeMonkey I'm glad I never even learned the old system

@UnityCodeMonkey @grok Can you use this list to convert from manager to system?

@UnityCodeMonkey WHY UNITY STOP

@UnityCodeMonkey why are they doin it?