// when the GameObjects collider arrange for this GameObject to travel to the left of the screen void OnTriggerEnter2D(Collider2D col) { if (col.gameObject.tag.Equals("Door")) { // It's a door! DoorBehaviour doorBehaviour = col.gameObject.GetComponent <DoorBehaviour>(); doorBehaviour.OpenScene(); } else { Debug.Log("Else: " + col.gameObject.tag); Debug.Log(col.gameObject.name); } }