/* * * Copyright ? 2007 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. *//* * WormMain.java * * Created on March 30, 2001, 16:15 * @version */package example.wormgame;import java.lang.Thread;import javax.microedition.lcdui.Command;import javax.microedition.lcdui.CommandListener;import javax.microedition.lcdui.Display;import javax.microedition.lcdui.Displayable;import javax.microedition.lcdui.Form;import javax.microedition.lcdui.Gauge;import javax.microedition.lcdui.Item;import javax.microedition.midlet.MIDlet;import javax.microedition.midlet.MIDletStateChangeException;/** * Main routine for worm MIDlet. */public class WormMain extends MIDlet implements CommandListener {    /** Current game board for worm pit. */    private WormPit theGame;    /** Button for exiting the game. */    private Command exitCmd = new Command("Exit", Command.EXIT, 3);    /** Menu item for changing game levels. */    private Command levelCmd = new Command("Change Level", Command.SCREEN, 2);    /** Menu item for starting a new game. */    private Command startCmd = new Command("Start", Command.SCREEN, 1);    /** Menu item to restart another game. */    private Command restartCmd = new Command("Restart", Command.SCREEN, 1);    /** Enable audio. */    private Command audioOnCmd = new Command("Audio On", Command.SCREEN, 1);    /** Disable audio. */    private Command audioOffCmd = new Command("Audio Off", Command.SCREEN, 1);    /** Menu item to cancel current pausedmenu dialog. */    private Command cancelCmd = new Command("Cancel", Command.ITEM, 1);    /** Menu item to confirm current selected operation. */    private Command OKCmd = new Command("OK", Command.OK, 1);    private Thread myThread;    /**     * Default constructor for worm MIDlet game.     * Creates the initial graphics objects and sets the command     * listener.     */    public WormMain() {        theGame = new WormPit();        theGame.addCommand(exitCmd);        theGame.addCommand(levelCmd);        theGame.addCommand(startCmd);        theGame.addCommand(audioOnCmd);        theGame.setCommandListener(this);    }    /**     * Destroy must cleanup everything. Only objects exist so the GC     * will do all the cleanup after the last reference is removed.     * @param unconditional if true, force MIDlet destroy processing     */    protected void destroyApp(boolean unconditional) {        theGame.destroyAudioPlayer();        theGame.destroyGame();        Display.getDisplay(this).setCurrent((Displayable)null);    }    /**     * Pause signals the thread to stop by clearing the thread field.     * If stopped before done with the iterations it will be restarted     * from scratch later.     */    protected void pauseApp() {        theGame.mute();        //stop game's timing thread        theGame.destroyGame();        try {            //we will start another thread after this one finishes            myThread.join();        } catch (InterruptedException ie) {            //        }    }    /**     * Start creates the thread to do the timing. It should return     * immediately to keep the dispatcher from hanging.     */    protected void startApp() {        theGame.unMute();        Display.getDisplay(this).setCurrent(theGame);        try {            // Start the game in its own thread            myThread = new Thread(theGame);            //ensure the game thread will work after pause            theGame.setDestroyed(false);            myThread.start();        } catch (Error e) {            destroyApp(false);            notifyDestroyed();        }    }    /**     * Respond to a commands issued on any Screen.     * @param c command object source of action     * @param d screen object containing the item the action was performed on     */    public void commandAction(Command c, Displayable d) {        if (c == restartCmd) {            theGame.restart();        } else if (c == levelCmd) {            Item[] levelItem = { new Gauge("Level", true, 9, theGame.getLevel()) };            Form f = new Form("Change Level", levelItem);            f.addCommand(OKCmd);            f.addCommand(cancelCmd);            f.setCommandListener(this);            Display.getDisplay(this).setCurrent(f);        } else if (c == exitCmd) {            destroyApp(false);            notifyDestroyed();        } else if (c == startCmd) {            theGame.removeCommand(startCmd);            theGame.addCommand(restartCmd);            theGame.restart();        } else if (c == OKCmd) {            Form f = (Form)d;            Gauge g = (Gauge)f.get(0);            theGame.setLevel(g.getValue());            Display.getDisplay(this).setCurrent(theGame);        } else if (c == cancelCmd) {            Display.getDisplay(this).setCurrent(theGame);        } else if (c == audioOnCmd) {            /* Turn on Audio */            theGame.createAudioPlayer();            theGame.removeCommand(audioOnCmd);            theGame.addCommand(audioOffCmd);        } else if (c == audioOffCmd) {            /* Turn off Audio */            theGame.destroyAudioPlayer();            theGame.removeCommand(audioOffCmd);            theGame.addCommand(audioOnCmd);        }    }}