Input.GetAxisRaw not returning a 0 in Unity

Question

this is extremely frustrating, basically Input.GetAxisRaw only ever returns a 1 or -1. see my code below

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class player : MonoBehaviour
{
    private BoxCollider2D boxCollider;

    private Vector3 moveDelta;

    private void Start()
    {
        boxCollider = GetComponent<BoxCollider2D>();
    }

    private void FixedUpdate()
    {
        float x = Input.GetAxisRaw("Horizontal");
        float y = Input.GetAxisRaw("Vertical");

        // Reset moveDelta
        moveDelta = new Vector3(x,y,0);

        // Swap sprite direction, whether you're going right or left 
        if(moveDelta.x > 0){
            transform.localScale = Vector3.one;
        }
        else if(moveDelta.x < 0){
            transform.localScale = new Vector3(-1,1,1);
        }

        //Make this thing move!
        transform.Translate(moveDelta * Time.deltaTime);

        Debug.Log(x);
        Debug.Log(y);

    }
}

Here are screenshots from the input settings, I haven't changed anything:

Please help, I am new to Unity. Could not find anything that work, the other related post was unanswered.

Answer 1

Hopefully I can post with zero reputation! I had an issue similar to this one. GetAxisRaw was pegged at 1 on vertical with no input from keyboard and no controllers connected.

I did have a 3Dconnexion spacemouse installed at one point and the utilities for that were installed and running. The spacemouse was not connected.

After shutting down all 3dconnexion utilities and rebooting Unity the issue went away.

All this is to say that if you encounter this issue it is very possible that it is related to software that is installed on your system. it's useful to check on a different system.

I hope that this helps.

Answer 2

If you are polling the keyboard, InputGetAxisRaw will always only return -1, 0 or 1 per the docs. Use InputGetAxis instead, assuming you don't want to do your own smoothing.

I've tested your code, zero does get returned when no keys are pressed:

Try polling/ logging Input.GetAxis() instead of Input.GetAxisRaw to see what kinds of values your keyboard is returning when idle. My guess is that it is returning some very small, but non-zero, value. If I'm right, you'll want to change your logic to move the sprite when the axis value is not simply greater than zero, but greater than that small threshold.