PBO 6

/**
 * Class utama "World of Zuul".
 * Class ini menginisialisasi semua class, termasuk membuat room, parsing dan
 * memulai game, dan eksekusi perintah yang telah di-parsing.
 *
 * @author Thomas Felix
 * @version 23 November 2020
 */

public class Game
{
    private Parser parser;
    private Room currentRoom;

    public Game()
    {
        createRooms();
        parser = new Parser();
    }

    private void createRooms()
    {
        Room outside, theatre, pub, lab, office;

        outside = new Room("outside the main entrance of the university");
        theatre = new Room("in a lecture theatre");
        pub = new Room("in the campus pub");
        lab = new Room("in a computing lab");
        office = new Room("in the computing admin office");

        outside.setExits(null, theatre, lab, pub);
        theatre.setExits(null, null, null, outside);
        pub.setExits(null, outside, null, null);
        lab.setExits(outside, office, null, null);
        office.setExits(null, null, null, lab);

        currentRoom = outside;
    }

    public void play()
    {
        printWelcome();

        boolean finished = false;
        while (! finished)
        {
            Command command = parser.getCommand();
            finished = processCommand(command);
        }

        System.out.println("Thank you for playing. Good bye.");
    }

    private void printWelcome()
    {
        System.out.println();
        System.out.println("Welcome to Adventure!");
        System.out.println("Adventure is a new, incredibly boring adventure game.");
        System.out.println("Type 'help' if you need help.");
        System.out.println();
        System.out.println("You are " + currentRoom.getDescription());
        System.out.print("Exits: ");

        if (currentRoom.northExit != null)
        {
            System.out.print("north ");
        }

        if (currentRoom.eastExit != null)
        {
            System.out.print("east ");
        }

        if (currentRoom.southExit != null)
        {
            System.out.print("south ");
        }

        if (currentRoom.westExit != null)
        {
            System.out.print("west ");
        }

        System.out.println();
        System.out.println();
    }

    private boolean processCommand(Command command)
    {
        boolean wantToQuit = false;

        if (command.isUnknown())
        {
            System.out.println("I don't know what you mean...");
            System.out.println();
            return false;
        }

        String commandWord = command.getCommandWord();
        if (commandWord.equals("help"))
        {
            printHelp();
        }

        else if (commandWord.equals("go"))
        {
            goRoom(command);
        }

        else if (commandWord.equals("quit"))
        {
            wantToQuit = quit(command);
        }

        return wantToQuit;
    }

    private void printHelp()
    {
        System.out.println("You are lost. You are alone. You are wander");
        System.out.println("around at the university.");
        System.out.println();
        System.out.println("Your command words are:");
        System.out.println("    go quit help");
        System.out.println();
    }

    private void goRoom(Command command)
    {
        if (! command.hasSecondWord())
        {
            System.out.println("Go where?");
            System.out.println();
            return;
        }

        String direction = command.getSecondWord();

        Room nextRoom = null;
        if (direction.equals("north"))
        {
            nextRoom = currentRoom.northExit;
        }

        if (direction.equals("east"))
        {
            nextRoom = currentRoom.eastExit;
        }

        if (direction.equals("west"))
        {
            nextRoom = currentRoom.westExit;
        }

        if (direction.equals("south"))
        {
            nextRoom = currentRoom.southExit;
        }

        if (nextRoom == null)
        {
            System.out.println("There is no door!");
            System.out.println();
        }

        else
        {
            currentRoom = nextRoom;
            System.out.println("You are " + currentRoom.getDescription());
            System.out.print("Exits: ");

            if (currentRoom.northExit != null)
            {
                System.out.print("north ");
            }

            if (currentRoom.eastExit != null)
            {
                System.out.print("east ");
            }

            if (currentRoom.southExit != null)
            {
                System.out.print("south ");
            }

            if (currentRoom.westExit != null)
            {
                System.out.print("west ");
            }

            System.out.println();
            System.out.println();
        }
    }

    private boolean quit(Command command)
    {
        if (command.hasSecondWord())
        {
            System.out.println("Quit what?");
            System.out.println();
            return false;
        }

        else
        {
            return true;
        }
    }
}