public void use(Item m)
    {
        if(m instanceof Key && m.getQuantity()>0)
        {
            ((Key)m).use(currentRoom);
        }
        if(m instanceof Food && m.getQuantity()>0)
        {
            ((Food)m).use(theGuy);
        }
        if(m instanceof Weapon && m.getQuantity()>0)
        {
            ((Weapon)m).use(theGuy, currentRoom.getEnemy());
        }
    }