// Copyright 2003 Nokia Corporation.//// THIS SOURCE CODE IS PROVIDED 'AS IS', WITH NO WARRANTIES WHATSOEVER,// EXPRESS OR IMPLIED, INCLUDING ANY WARRANTY OF MERCHANTABILITY, FITNESS// FOR ANY PARTICULAR PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE// OR TRADE PRACTICE, RELATING TO THE SOURCE CODE OR ANY WARRANTY OTHERWISE// ARISING OUT OF ANY PROPOSAL, SPECIFICATION, OR SAMPLE AND WITH NO// OBLIGATION OF NOKIA TO PROVIDE THE LICENSEE WITH ANY MAINTENANCE OR// SUPPORT. FURTHERMORE, NOKIA MAKES NO WARRANTY THAT EXERCISE OF THE// RIGHTS GRANTED HEREUNDER DOES NOT INFRINGE OR MAY NOT CAUSE INFRINGEMENT// OF ANY PATENT OR OTHER INTELLECTUAL PROPERTY RIGHTS OWNED OR CONTROLLED// BY THIRD PARTIES//// Furthermore, information provided in this source code is preliminary,// and may be changed substantially prior to final release. Nokia Corporation// retains the right to make changes to this source code at// any time, without notice. This source code is provided for informational// purposes only.//// Nokia and Nokia Connecting People are registered trademarks of Nokia// Corporation.// Java and all Java-based marks are trademarks or registered trademarks of// Sun Microsystems, Inc.// Other product and company names mentioned herein may be trademarks or// trade names of their respective owners.//// A non-exclusive, non-transferable, worldwide, limited license is hereby// granted to the Licensee to download, print, reproduce and modify the// source code. The licensee has the right to market, sell, distribute and// make available the source code in original or modified form only when// incorporated into the programs developed by the Licensee. No other// license, express or implied, by estoppel or otherwise, to any other// intellectual property rights is granted herein.// unnamed packageimport javax.microedition.midlet.*;import javax.microedition.lcdui.*;import javax.microedition.rms.*;import java.util.*;import java.io.*;public class SheepdogMIDlet    extends MIDlet    implements Runnable{    private static final String RS_NAME = "BESTTIME";    private MenuList menuList;    private SheepdogCanvas sheepdogCanvas;    private boolean initDone = false;    private static final Random random = new Random();    private boolean hasBestTime = false;    private long bestTime;    public SheepdogMIDlet()    {    }        public void startApp()    {        Displayable current = Display.getDisplay(this).getCurrent();        if (current == null)        {            // first time we've been called            Display.getDisplay(this).setCurrent(new SplashScreen(this));        }        else        {            if (current == sheepdogCanvas)            {                sheepdogCanvas.start();   // start its animation thread            }            Display.getDisplay(this).setCurrent(current);        }    }    public void pauseApp()    {        Displayable current = Display.getDisplay(this).getCurrent();        if (current == sheepdogCanvas)        {            sheepdogCanvas.stop();   // kill its animation thread        }    }    public void destroyApp(boolean unconditional)    {        if (sheepdogCanvas != null)        {            sheepdogCanvas.stop();   // kill its animation thread        }    }    private void quit()    {        destroyApp(false);        notifyDestroyed();    }    public void run()    {        init();    }    private synchronized void init()    {        if (!initDone)        {            readRecordStore();            SoundEffects.getInstance();            menuList = new MenuList(this);            sheepdogCanvas = new SheepdogCanvas(this);            initDone = true;        }    }    void splashScreenPainted()    {        new Thread(this).start();   // start background initialization    }    void splashScreenDone()    {        init();   // if not already done        Display.getDisplay(this).setCurrent(menuList);    }    void menuListContinue()    {        Display.getDisplay(this).setCurrent(sheepdogCanvas);        sheepdogCanvas.start();    }    void menuListNewGame()    {        sheepdogCanvas.init();        Display.getDisplay(this).setCurrent(sheepdogCanvas);        sheepdogCanvas.start();    }    void menuListInstructions()    {        // create and discard a new Instructions screen each time, to        // avoid keeping heap memory for it when it's not in use        Display.getDisplay(this).setCurrent(new InstructionsScreen(this));    }    void menuListHighScore()    {        // create and discard a new High Score screen each time, to        // avoid keeping heap memory for it when it's not in use        Display.getDisplay(this).setCurrent(new HighScoreScreen(this));    }    void menuListQuit()    {        quit();    }    void sheepdogCanvasMenu()    {        sheepdogCanvas.stop();        menuList.setGameActive(true);        Display.getDisplay(this).setCurrent(menuList);    }    void sheepdogCanvasGameOver(long time)    {        sheepdogCanvas.stop();        menuList.setGameActive(false);        Display.getDisplay(this).setCurrent(new GameOverScreen(this, time));    }    void gameOverDone()    {        Display.getDisplay(this).setCurrent(menuList);    }    void instructionsBack()    {        Display.getDisplay(this).setCurrent(menuList);    }    void highScoreBack()    {        Display.getDisplay(this).setCurrent(menuList);    }    // method needed by lots of classes, shared by putting it here    static Image createImage(String filename)    {        Image image = null;        try        {            image = Image.createImage(filename);        }        catch (java.io.IOException ex)        {            // just let return value be null        }        return image;    }    // method needed by lots of classes, shared by putting it here    static int random(int size)    {        return (random.nextInt() & 0x7FFFFFFF) % size;    }    // only the MIDlet has access to the display, so put this method here    void flashBacklight(int millis)    {        Display.getDisplay(this).flashBacklight(millis);    }    // only the MIDlet has access to the display, so put this method here    void vibrate(int millis)    {        Display.getDisplay(this).vibrate(millis);    }    long getBestTime()    {        return hasBestTime ? bestTime : -1;    }    boolean checkBestTime(long time)    {        if (!hasBestTime || (time < bestTime))        {            hasBestTime = true;            bestTime = time;            writeRecordStore();            return true;        }        else        {            return false;        }    }    private void readRecordStore()    {        hasBestTime = false;        RecordStore rs = null;        ByteArrayInputStream bais = null;        DataInputStream dis = null;        try        {            rs = RecordStore.openRecordStore(RS_NAME, false);            byte[] data = rs.getRecord(1);            bais = new ByteArrayInputStream(data);            dis = new DataInputStream(bais);            bestTime = dis.readLong();            hasBestTime = true;        }        catch (IOException ex)        {            // hasBestTime will still be false        }        catch (RecordStoreException ex)        {            // hasBestTime will still be false        }        finally        {            if (dis != null)            {                try                {                    dis.close();                }                catch (IOException ex)                {                    // no error handling necessary here                }            }            if (bais != null)            {                try                {                    bais.close();                }                catch (IOException ex)                {                    // no error handling necessary here                }            }            if (rs != null)            {                try                {                    rs.closeRecordStore();                }                catch (RecordStoreException ex)                {                    // no error handling necessary here                }            }        }    }    // this will only be called when we have a best time    private void writeRecordStore()    {        RecordStore rs = null;        ByteArrayOutputStream baos = null;        DataOutputStream dos = null;        try        {            rs = RecordStore.openRecordStore(RS_NAME, true);            baos = new ByteArrayOutputStream();            dos = new DataOutputStream(baos);            dos.writeLong(bestTime);            byte[] data = baos.toByteArray();            if (rs.getNumRecords() == 0)            {                // new record store                rs.addRecord(data, 0, data.length);            }            else            {                // existing record store: will have one record, id 1                rs.setRecord(1, data, 0, data.length);            }        }        catch (IOException ex)        {            // just leave the best time unrecorded        }        catch (RecordStoreException ex)        {            // just leave the best time unrecorded        }        finally        {            if (dos != null)            {                try                {                    dos.close();                }                catch (IOException ex)                {                    // no error handling necessary here                }            }            if (baos != null)            {                try                {                    baos.close();                }                catch (IOException ex)                {                    // no error handling necessary here                }            }            if (rs != null)            {                try                {                    rs.closeRecordStore();                }                catch (RecordStoreException ex)                {                    // no error handling necessary here                }            }        }    }}