unity-towers-of-hanoi/Assets/Controls.cs

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

public class Controls : MonoBehaviour
{
    public GameObject control;
    private int separation = 8;
    private Vector3 position = new Vector3(0, 10, 0);

    // Update is called once per frame
    void Update()
    {
        if (Input.GetKeyUp("a"))
        {
            if (this.position.x > -1)
            {
                this.position.x = this.position.x - this.separation;
            }
        }

        if (Input.GetKeyUp("d"))
        {
            if (this.position.x < 1)
            {
                this.position.x = this.position.x + this.separation;
            }
        }
    }

    void FixedUpdate()
    {
        this.control.transform.position = this.position;
    }
}