/// <summary>
    /// function for the enemy to take damage
    /// </summary>
    /// <param name="dmg"> how much damage will be dealt </param>
    /// <returns> true = enemy is dead; false = enemy is alive </returns>
    public bool TakeDamage(int dmg)
    {
        curHP -= dmg;

        updateUI.DisplayHealth();

        if (curHP <= 0)
        {
            return(true);
        }
        else
        {
            return(false);
        }
    }