Custom Device: Flip Initial Value from 1 to 0

Unity Engine
,
1

I am writing a custom device to add support for my DualShock 3 controller on Windows. I’ve managed to figure out most of it, apart from the two triggers.

[InputControl(name = "leftTrigger", format = "BYTE")]
[FieldOffset(11)] public byte leftTrigger;
[InputControl(name = "rightTrigger", format = "BYTE")]
[FieldOffset(12)] public byte rightTrigger;

These are the right offsets but, in the Input Debugger, they start with a value of 1 and change to 0 when fully pressed. How do I change these to start at 0 and move to 1 when fully pressed?

I’ve looked at Processors but, apart from writing my own, the closest I can get is Invert which starts at -1 and changes to 0 when fully pressed.

Thanks!

2

My friend suggested, at least temporarily, to use a custom processor that flips the value based on a defined maxValue.

I imagined there might be a built-in solution I was missing but, for now, this works:

#if UNITY_EDITOR
    [InitializeOnLoad]
#endif
    public class FlipProcessor : InputProcessor<float>
    {
#if UNITY_EDITOR
        static FlipProcessor()
        {
            Initialize();
        }
#endif

        [RuntimeInitializeOnLoadMethod]
        static void Initialize()
        {
            InputSystem.RegisterProcessor<FlipProcessor>();
        }

        [Tooltip("TODO - Tooltip required")]
        public float maxValue = 1;

        public override float Process(float value, InputControl control)
        {
            return this.maxValue - value;
        }
    }

[InputControl(name = "leftTrigger", format = "BYTE", processors = "flip(maxValue=1)")]
[FieldOffset(11)] public byte leftTrigger;
[InputControl(name = "rightTrigger", format = "BYTE", processors = "flip(maxValue=1)")]
[FieldOffset(12)] public byte rightTrigger;