World of Zuul (GAME)

/**
 *  Merupakan Main Class dari World of zuul
 *  versi sederhana untuk sebuah world of zuul
 *  pemain bisa bergerak dengan banyak kondisi sehingga menyenangkan
 *
 *  untuk memainkan nya dibutuhkan instansi dari class ini yaitu dengan
 *  "call" method
 *
 *  class ini menginisialisasikan class yang lain
 *  semua rooms,membuat class parsers dan mulai game.
 *  class ini mengevaluasi dan mengeksekusi perintah dari class parser
 *
 * @author Dwinanda Bagoes Ansori
 * @version 24 November 2020
 */
public class Game
{
    private Parser parser;
    private Room currentRoom;

    // membuat game dan petanya
    public Game()
    {
        createRooms();
        parser = new Parser();
    }

    //membuat semua ruangan dan menhubungkan ruangan-ruangan tersebut.
    private void createRooms()
    {
        Room outside, theater, pub, lab, office;

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

        // inisialisasi arah keluar masing masing room
        outside.setExits(null, theater, lab, pub);
        theater.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;  //mulai game nya dari outside
    }

    /**
     *  dilakukan gamenya sampai selesai
     */
    public void play()
    {
        printWelcome();

        // masuk ke loop perintah
        // eksekusi sampai game selesai
        boolean finished = false;
        while (!finished)
        {
            Command command = parser.getCommand();
            finished = processCommand(command);
        }
        System.out.println("Thank you for playing. Good Bye");
    }

    /**
     * Pesan awalan.
     */
    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.println("Exits: ");
        if (currentRoom.northExit != null)
            System.out.println("north ");
        if (currentRoom.eastExit != null)
            System.out.println("east ");
        if (currentRoom.southExit != null)
            System.out.println("south ");
        if (currentRoom.westExit != null)
            System.out.println("west ");
    }

    /**
     * perintah akan dieksekusi
     * @param command akan diproses.
     * @return true jika menyeleseikan game nya.
     */
    private boolean processCommand(Command command)
    {
        boolean wantToQuit = false;

        if (command.isUnknown())
        {
            System.out.println("I don't know what you mean...");
            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 wander");
        System.out.println("around at the university");
        System.out.println();
        System.out.println("Your command words are:");
        System.out.println("    go quit help");
    }

    /**
     * lakukan pergi ke suatu arah jika ada keluar maka pindah tempat
     * jika tidak jadi error
     */
    private void goRoom(Command command)
    {
        if(!command.hasSecondWord())
        {
            // jika tidak ada kata kedua, sehingga jadi sesat
            System.out.println("Go where?");
            return;
        }

        String direction = command.getSecondWord();

        // pindah pindah tempat
        Room nextRoom = null;
        if (direction.equals("north"))
            nextRoom = currentRoom.northExit;
        if (direction.equals("east"))
            nextRoom = currentRoom.eastExit;
        if (direction.equals("south"))
            nextRoom = currentRoom.southExit;
        if (direction.equals("west"))
            nextRoom = currentRoom.westExit;

        if (nextRoom == null)
            System.out.println("There is no door!");
        else
        {
            currentRoom = nextRoom;
            System.out.println("You are " + currentRoom.getDescription());
            System.out.println("Exits: ");
            if (currentRoom.northExit != null)
                System.out.println("north ");
            if (currentRoom.eastExit != null)
                System.out.println("east ");
            if (currentRoom.southExit != null)
                System.out.println("south ");
            if (currentRoom.westExit != null)
                System.out.println("west ");
        }
    }

    /**
     * apabila ada user enter 'quit' maka check semua command untuk melihat apakah kita bisa
     * keluar dari game tersebut
     * @return true jika bisa keluar dan false jika tidak
     */
    private boolean quit(Command command)
    {
        if (command.hasSecondWord())
        {
            System.out.println("Quit where?");
            return false;
        }
        else
            return true;
    }
}