Press interaction on a mouse position not working?

[CDF]

So I’m new to this Input System and trying to create an action that occurs when the user presses, holds and releases the mouse (or touch screen).

I want to take the screen position of the input, convert it to normalized coordinates (-1, 1) and use that value in the “performed” callback. The goal of the action is to move the player left/right depending on where you press/touch on screen. It should also work with gamepads and keyboard as well.

I thought this might be how to achieve it:

Here I have a “Position [Mouse]” action that has a “Press and Release” interaction and a custom “Screen Input” processor to turn the position into the normalized coordinates.

But I never receive any started, performed, cancelled events. If I remove the “Press” interaction then I receive events, but every time the mouse moves, which is not what I want.

Can also see I have a game pad and keyboard sending “Move” commands as well. So I’d like to keep mouse position and touch position within the “Move” action.

Is this not possible? Is there a better/different way I should be doing this?

[CDF]

Ok, after looking at the internals a bit. This is the wrong approach. It’s not actually checking a press, rather, it considers a press if the mouse position magnitude < 0.5. In other words, 0.5 pixels from bottom left corner.

so not sure how to continue here.

[CDF]

Ok, think I got it. Had to create a custom composite binding:

using UnityEngine;
using UnityEngine.InputSystem;
using UnityEngine.InputSystem.Layouts;
using UnityEngine.InputSystem.Utilities;

public class ScreenInputComposite : InputBindingComposite<Vector2> {

    #region Fields

    [InputControl(layout = "Axis")]
    public int position;

    [InputControl(layout = "Button")]
    public int button;

    #endregion

    #region Public Methods

    public override Vector2 ReadValue(ref InputBindingCompositeContext context) {

        var positionValue = context.ReadValue<Vector2, Vector2MagnitudeComparer>(position);
        var buttonValue = context.ReadValueAsButton(button);

        if (buttonValue) {

            float sw = Screen.width / 2;
            float sh = Screen.height / 2;

            float x = positionValue.x - sw;
            float y = positionValue.y - sh;

            float h = Mathf.Clamp(x / sw, -1, 1);
            float v = Mathf.Clamp(y / sh, -1, 1);

            return new Vector2(h, v);
        }

        return Vector2.zero;
    }

    public override float EvaluateMagnitude(ref InputBindingCompositeContext context) {

        var buttonValue = context.ReadValueAsButton(button);

        return buttonValue ? 1 : 0;
    }

    #endregion

    #region Private Methods

#if UNITY_EDITOR
    [UnityEditor.InitializeOnLoadMethod]
    static void RegisterEditor() {

        Register();
    }
#endif

    [RuntimeInitializeOnLoadMethod]
    private static void Register() {

        InputSystem.RegisterBindingComposite<ScreenInputComposite>();
    }

    #endregion
}

So now I can use the “Press” interaction correctly and receive the position in normalized coordinates