public void enterShop(HumanCharacter theHumanCharacter){
		System.out.println("Welcome to the shop!");
		System.out.println("What would you like to buy?");
		System.out.println("Type 'mana potion' for Mana Potions --20g each");
		System.out.println("Type 'health potion' for Health Potions --15g each");
		System.out.println("Type 'exit' to leave.");
		System.out.println("Your gold: " + theHumanCharacter.getGold());
		System.out.print("Command:");
		String choice = input.nextLine();
		if(choice.compareTo("")==0){
			System.out.println("Error catching...please input again...");
			choice = input.nextLine();
		}
		if(choice.compareTo("mana potion") == 0){
			theHumanCharacter.buyManaPotions(this.sellPotions("mana potion"));
		}
		else if(choice.compareTo("health potion") == 0){
			theHumanCharacter.buyHealthPotions(this.sellPotions("health potion"));
		}
		else if(choice.compareTo("exit") == 0){
			System.out.println("Good bye!");
		}
		
	}