public void Buy(string item) { switch (item) { case "healthPotion": if (money.coins >= healthPotionPrice) { money.RemoveCoin(healthPotionPrice); health.AddPotion(); moneyHandle.Play(); } break; case "extraLife": if (money.coins >= extraLifePrice) { money.RemoveCoin(extraLifePrice); health.IncreaseMaxLife(); moneyHandle.Play(); } break; } }