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 cc.squirreljme.runtime.cldc.debug.Debugging;
import java.io.IOException;
import java.io.InputStream;
import java.util.Random;

/**
 * This is used to build games which can then be run and such.
 *
 * @since 2019/07/01
 */
public final class GameBuilder
{
    /** The game seed. */
    private volatile long _seed;
    
    /** The map size. */
    private volatile MapSize _mapsize;
    
    /** The number of players used. */
    private volatile int _numplayers;
    
    /**
     * Initializes a base game builder.
     *
     * @since 2019/07/01
     */
    public GameBuilder()
    {
        // Instead of using the time directly, derive it from a seed
        Random initseed = new Random((System.currentTimeMillis() * 37L) +
            System.nanoTime());
        this._seed = ((long)initseed.nextInt() << 32) ^ initseed.nextInt();
        
        // Set default parameters
        this._mapsize = MapSize.DEFAULT;
        this._numplayers = 2;
    }
    
    /**
     * Builds the actual game.
     *
     * @return The resulting game.
     * @since 2019/07/01
     */
    public final Game build()
    {
        synchronized (this)
        {
            return new Game(this._seed,
                this._mapsize,
                this._numplayers);
        }
    }
    
    /**
     * Sets the number of players in the game.
     *
     * @param __n The number of players to have.
     * @return {@code this}.
     * @throws IllegalArgumentException If the player count is out of range.
     * @since 2019/07/01
     */
    public final GameBuilder players(int __n)
        throws IllegalArgumentException
    {
        /* {@squirreljme.error BE0s Out of range player count. (The count)} */
        if (__n < 1 || __n > Players.MAX_PLAYERS)
            throw new IllegalArgumentException("BE0s " + __n);
        
        synchronized (this)
        {
            this._numplayers = __n;
            return this;
        }
    }
    
    /**
     * Sets the seed to use for the game.
     *
     * @param __v The seed to use.
     * @return {@code this}.
     * @since 2019/07/01
     */
    public final GameBuilder seed(long __v)
    {
        synchronized (this)
        {
            this._seed = __v;
            return this;
        }
    }
    
    /**
     * Builds and plays back a game from a replay.
     *
     * @param __in The input stream.
     * @return The resulting game.
     * @throws IOException On read/write errors.
     * @throws NullPointerException On null arguments.
     * @since 2019/07/01
     */
    public static final Game fromReplay(InputStream __in)
        throws IOException, NullPointerException
    {
        if (__in == null)
            throw new NullPointerException("NARG");
        
        throw Debugging.todo();
    }
}