import javax.microedition.midlet.*;import javax.microedition.lcdui.*;import javax.microedition.rms.*;import java.util.*;import java.io.*;public class  escapeeMIDlet    extends MIDlet   implements Runnable{    private static final String RS_NAME = "BESTTIME";    private MenuList menuList;    private escapeeCanvas myCanvas;    private boolean initDone = false;    private static final Random random = new Random();    private boolean hasBestTime = false;    private long bestTime;// 最好時間    public escapeeMIDlet()     {    }        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 == myCanvas)            {                myCanvas.start();   // start its animation thread            }            Display.getDisplay(this).setCurrent(current);        }    }    public void pauseApp()    {        Displayable current = Display.getDisplay(this).getCurrent();        if (current == myCanvas)        {            myCanvas.stop();   // kill its animation thread        }    }    public void destroyApp(boolean unconditional)    {        if (myCanvas != null)        {            myCanvas.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);            myCanvas = new escapeeCanvas(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(myCanvas);        myCanvas.start();    }    void menuListNewGame()    {        myCanvas.init();        Display.getDisplay(this).setCurrent(myCanvas);        myCanvas.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 GameCanvasMenu()    {        myCanvas.stop();        menuList.setGameActive(true);        Display.getDisplay(this).setCurrent(menuList);    }    void GameCanvasGameOver(long time,int BULLETS_NUM)    {        myCanvas.stop();        menuList.setGameActive(false);        Display.getDisplay(this).setCurrent(new GameOverScreen(this, time, BULLETS_NUM));    }    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;    }    // 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                }            }        }    }}