Unity New Input System - What Is The Correct Way To Check If Any Button From An Action Map Was Pressed?

Question

Good Morning All,

I am using Unity's New Input System. I have an Action Map created called 'Menu'.

Currently, this is how I check for specific button presses.

If( xxx.Menu.Select.WasPressedThisFrame() )
{
  // Do Stuff
}

The above works fine. However, now I need to check if any button was pressed from the Action Map.

For example, my game could show an image of a PS4's X Button. I need to detect if the player presses the right or wrong button. If the right button is pressed they win and if the wrong button is pressed they lose.

Hopefully this makes it even more clear:

If( METHOD THAT CHECKS IF ANY INPUT FROM THE MENU ACTION MAP WAS PRESSED ) // <- This is what I need
{
      If( xxx.Menu.Select.WasPressedThisFrame() )
      {
        // You win!
      }

      Else
      {
        // You Lose!
      }
}

To summarize, I'm looking for a method from Unity's New Input System that checks if any button was pressed. Thank you so much for taking the time!😊

Answer 1

You could use a setup like this :

And then check with:

if (inputActions.actionMap.TestAction.WasPressedThisFrame())
{
    if (inputActions.actionMap.Good.WasPressedThisFrame())
    {
        Debug.Log("You win!");
    }
    else if (inputActions.actionMap.Bad.WasPressedThisFrame())
    {
        Debug.Log("You lose!");
    }
}

But, in general, with the new Input System it might make more sense to organize the input logic by using callbacks, rather than polling. Like this:

inputActions.actionMap.Good.performed += () =>
{
    Debug.Log("You win!");
}
inputActions.actionMap.Bad.performed += () =>
{
    Debug.Log("You lose!");
}

Answer 2

Here is an example how you can check for any InputAction being triggered in any or specific InputActionMap:

using System.Linq;
using UnityEngine;
using UnityEngine.InputSystem;

public class TestAnyButton : MonoBehaviour
{
    [SerializeField] private InputActionAsset iaa;

    void Start()
    {
        iaa.Enable();
    }

    void Update()
    {
        if (iaa.Any((ia) => ia.WasPressedThisFrame()))
        {
            Debug.Log("Any action", this);
        }


        if (iaa.FindActionMap("AcitonMapName").Any((ia) => ia.WasPressedThisFrame()))
        {
            Debug.Log("Any action in an action map", this);
        }
    }
}

An alternative way is to subscribe to all the InputActions in a map:

public class TestAnyButton : MonoBehaviour
{
    [SerializeField] private InputActionAsset iaa;

    private InputActionMap observedMap;

    void OnEnable()
    {
        iaa.Enable();

        observedMap = iaa.FindActionMap("ActionMapName");
        foreach (var inputAction in observedMap)
        {
            inputAction.started += OnStarted;
        }
    }

    void OnDisable()
    {
        foreach (var inputAction in observedMap)
        {
            inputAction.started -= OnStarted;
        }
    }

    void OnStarted(CallbackContext context)
    {
        if (context.started)
        {
            Debug.Log($"{context.action.name} started.", this);
        }
    }
}