PBO-C 6 : Game()

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

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

    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");
        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;
    }

    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 the World of Zuul!");
        System.out.println("World of Zuul 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();
    }

    private boolean processCommand(Command command)
    {
        boolean wantToQuit = false;
        if(command.isUnknown())
        {
            System.out.println("I don't understand...");
            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");
    }

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

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