carrace.java

DOJA平台赛车游戏

/*
 * @(#)CarRace.java    1.0 04/07/01 @(#)
 *
 * Copyright 2004 NTT DoCoMo, Inc. All rights reserved.
 */
import com.nttdocomo.ui.Dialog;
import com.nttdocomo.ui.Display;
import com.nttdocomo.ui.IApplication;

/**
 * CarRace<BR>
 * The main class of the application.
 * <br>
 * 2 scratchpads are used in this application.<br>
 * <ol>
 * <li>Score data<br>
 * Manages the score shown in the score-rank as five 4-byte data.<br>
 * <pre>
 * | 00 00 3D EA | 00 00 1C 84 | 00 00 1B BC | 00 00 15 E0 | 00 00 10 9A |
 *   Rank-1        Rank-2        Rank-3        Rank-4        Rank-5
 * </pre>
 * <li>Image/Sound data<br>
 * first 1-byte manages the download state of the media data,<br>
 * and from the second byte combinations of data size and media data
 * follows for the amount of the file numbers.
 * <pre>
 * | 01 | 06 48 | 47 49 46 38 ... 02 00 3B | 04 0E | 47 49 46 ... 80 00 3B | ...
 *   (a)  (b)     (c)                        (d)     (e)
 * 
 * (a) Download flag (1: Finish)
 * (b) Media1 file size (2 byte fixed)
 * (c) Media1 file date (length variable)
 * (d) Media2 file size (2 byte fixed)
 * (e) Media2 file data (length variable)
 *         :
 * </pre>
 * <p>
 * @version 1.0
 * </p>
 */
public class CarRace extends IApplication {
    /** SCORE */
    private Score score = new Score();
    /** TITLE Panel */
    private TitlePanel titlePanel = null;
    /** RANKING Panel */
    private RankPanel rankingPanel = null;
    /** MAIN Canvas */
    private GameCanvas gameCanvas = null;
    /** RUN Thread */
    private Thread thread = null;

    /**
     * The first method that runs in the beginning of the application.
     */
    public void start() {
        try {
            /* Loading media file */
            if (false == MediaCollection.load()) {
                Dialog dialog = new Dialog(Dialog.DIALOG_INFO, "Error");
                dialog.setText("It failed on loading of a media file.");
                dialog.show();
                terminate();
            }

            /* Creating title screen */
            titlePanel = new TitlePanel(this, score);

            /* Creating ranking screen */
            rankingPanel = new RankPanel(this, score);

            /* Creating game screen */
            gameCanvas = new GameCanvas(this, score);

            /* Displaying the title */
            Display.setCurrent(titlePanel);
        } catch (Exception e) {
            StringBuffer msg = new StringBuffer();
            msg.append(e.getClass().getName());
            Dialog dialog = new Dialog(Dialog.DIALOG_INFO, "Error");
            dialog.setText(msg.toString());
            dialog.show();
            MediaCollection.dispose();
            terminate();
        }
    }

    /**
     * The method that runs first after comming back from suspend mode.
     * <br>
     * By using getSuspendInfo() method, you can acquire the reason of
     * the suspend and the effects during the suspend mode.
     */
    public void resume() {
    }

    /**
     * Starts the race game.
     */
    public void play() {
        thread = new Thread(gameCanvas);
        thread.start();
    }

    /**
     * Ends the race game and shows the title screen.
     */
    public void endGame() {
        score.save();
        showTitlePanel();
    }

    /**
     * Displays the ranking.
     */
    public void showRanking() {
        rankingPanel.refresh();
        Display.setCurrent(rankingPanel);
    }

    /**
     * Displays the title screen.
     */
    public void showTitlePanel() {
        titlePanel.refresh();
        Display.setCurrent(titlePanel);
    }
}