Question How do I...in script, detect if a controller is plugged in Runtime.

As the title says, im trying to find a way to detect when player 2 plugs in the second controller, in script.
As i would like to start functions and UI effects when player 2 gets involved into the game.
I know about this page: https://docs.unity3d.com/Packages/com.unity.inputsystem@1.0/manual/HowDoI.html
but i dont know how to implement it into a script, or where the script should be or why.

I need a helping snippet example like most of the examples in the unity documents to fully understand how it works.
Thanx

 

I reformatted Unity's code snippet into a more complete example:

Code (CSharp):

1. public class Example : MonoBehaviour
2. {
3.     void Awake()
4.     {
5.         InputSystem.onDeviceChange += OnDeviceChange;
6.     }
7.  
8.     void OnDestroy()
9.     {
10.         InputSystem.onDeviceChange -= OnDeviceChange;
11.     }
12.  
13.     public void OnDeviceChange(InputDevice device, InputDeviceChange change)
14.     {
15.         switch (change)
16.         {
17.             case InputDeviceChange.Added:
18.                 // New Device.
19.                 break;
20.             case InputDeviceChange.Disconnected:
21.                 // Device got unplugged.
22.                 break;
23.             case InputDeviceChange.Reconnected:
24.                 // Plugged back in.
25.                 break;
26.             case InputDeviceChange.Removed:
27.                 // Remove from Input System entirely; by default, Devices stay in the system once discovered.
28.                 break;
29.             default:
30.                 // See InputDeviceChange reference for other event types.
31.                 break;
32.         }
33.     }
34. }

The new snippet showcases the entire 'listening' process without causing a memory leak. (See C# Actions for more info on that).

In

OnDeviceChange()

you can put your own code.
In your case, you are probably looking to display UI elements for whenever Player 2 is

Added

or

Reconnected

.


As for this:

This particular script can be attached to any GameObject.
Whenever an InputDevice undergoes a change,

OnDeviceChange()

will be performed no matter which GameObject this component is attached to.

Unity's

InputSystem.onDeviceChange

is an Action. When you do

+=

or

-=

to an Action, you are adding or removing a subscriber.
Whenever Unity invokes the

InputSystem.onDeviceChange

Action, all subscribers (I.E. your code) will be executed.

 

Amazing! thank you. you probably helped more people than me right now.
Thanx yet again.

 

I'm glad I could be of assistance!
Happy coding!