Script controls 2 game objects not independently

I’ve recently started unity, so as a sort of exercise I wanted to make a remake of a Mario level. The part where i got stuck is when I made patrolling Goombas. It may be an inefficient and basic method, but essentially the idea is that I made them reverse direction when hitting another object. The problem is, that for some reason, when one hits a wall, both of them reverse direction. The script is, of course, applied to both.

  using UnityEngine;
    using System.Collections;
    public class GoombaMove : MonoBehaviour {
        public static float speed = -0.01f;
    	// Update is called once per frame
    	void Update () {
            this.transform.Translate(speed, 0, 0);
        void OnTriggerEnter2D(Collider2D other)
             speed *= -1;

I’m at a bit of a loss here…

the problem is that your speed variable is static, which means its not bound to the object you are manipulating. Just removing the static token should fix the issue :slight_smile: