SquirrelJME/SquirrelJME

// -*- Mode: Java; indent-tabs-mode: t; tab-width: 4 -*-
// ---------------------------------------------------------------------------
// SquirrelJME
//     Copyright (C) Stephanie Gawroriski <xer@multiphasicapps.net>
// ---------------------------------------------------------------------------
// SquirrelJME is under the Mozilla Public License Version 2.0.
// See license.mkd for licensing and copyright information.
// ---------------------------------------------------------------------------

package dev.shadowtail.squirrelquarrel;

import javax.microedition.lcdui.Choice;
import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.List;

/**
 * This listens to commands within the game.
 *
 * @since 2019/12/25
 */
public final class CommandHandler
    implements CommandListener
{
    /** The command to exit the game. */
    public static final Command EXIT_COMMAND =
        new Command("Quit", Command.EXIT, 10);
    
    /** The game to interact with. */
    protected final Game game;
    
    /**
     * Initializes the command handler.
     *
     * @param __g The game being played.
     * @throws NullPointerException On null arguments.
     * @since 2019/12/25
     */
    public CommandHandler(Game __g)
        throws NullPointerException
    {
        if (__g == null)
            throw new NullPointerException("NARG");
        
        this.game = __g;
    }
    
    /**
     * Executes the given command.
     *
     * @param __c The command to execute.
     * @since 2019/12/25
     */
    @Override
    public void commandAction(Command __c, Displayable __d)
    {
        // Exit the game?
        if (__c == CommandHandler.EXIT_COMMAND)
            System.exit(0);
        
        // The in-game menu was requested
        else if (__c == GameInterface.STATUS_COMMAND)
            __d.getCurrentDisplay().setCurrent(
                this.__makeStatusMenu((GameInterface)__d));
        
        // Returning to the game?
        else if (__c instanceof ReturnToGameCommand)
            __d.getCurrentDisplay().setCurrent(
                ((ReturnToGameCommand)__c).gameinterface);
    }
    
    /**
     * Makes and returns the status menu.
     *
     * @param __gi The game interface.
     * @throws NullPointerException On null arguments.
     * @since 2019/12/25
     */
    private Displayable __makeStatusMenu(GameInterface __gi)
        throws NullPointerException
    {
        if (__gi == null)
            throw new NullPointerException("NARG");
        
        // Make a list to show status items
        List items = new List("Status", Choice.IMPLICIT);
        
        // For now add some dummy items
        items.append("P1: 9999 Acorns", PlayerIndex.of(0).colorBox());
        items.append("P2: 9999 Acorns", PlayerIndex.of(1).colorBox());
        items.append("P3: 9999 Acorns", PlayerIndex.of(2).colorBox());
        items.append("P4: 9999 Acorns", PlayerIndex.of(3).colorBox());
        items.append("Season: Spring Day 1", null);
        
        // Set commands for this list
        items.addCommand(new ReturnToGameCommand(__gi));
        items.addCommand(CommandHandler.EXIT_COMMAND);
        
        // Use self as the command listener
        items.setCommandListener(this);
        
        // Return the list
        return items;
    }
}