private void OnTriggerExit2D(Collider2D collision)
 {
     if (collision.GetComponentInChildren <PlayerLadderMovement>() == playerInside)
     {
         playerInside = null;
     }
 }
    private void OnTriggerEnter2D(Collider2D collision)
    {
        PlayerLadderMovement playerLM = null;

        if ((playerLM = collision.GetComponentInChildren <PlayerLadderMovement>()))
        {
            if (!added)
            {
                added = playerLM.AddLadder(this);
            }
            playerInside = playerLM;
        }
    }