/// <summary>
/// zaserwowanie jedzenia
/// </summary>
/// <param name="guest"></param>
public void ServeFood(Guest guest)
{
gold += guest.BuyBeer(foodCost);
food--;
}
/// <summary>
/// zaservowanie piwa
/// </summary>
/// <param name="guest"></param>
public void ServeBeer(Guest guest)
{
gold += guest.BuyBeer(beerCost);
beer--;
}