gamemidlet.java

J2ME的游戏原代码!希望能帮助有需要帮助的师兄弟们！

        m_pDisplay.setCurrent(m_pGameScreen);
	    /* Start	Addition		21-03-2003		for external events	*/
	    activeDisplay = m_pGameScreen;
		//System.out.println("activeDisplay_playS"+activeDisplay);
	    /* End	Addition	21-03-2003	*/

        m_pGameScreen.g_bdrawLoading = true;
        m_pGameScreen.repaint();
        m_pGameScreen.serviceRepaints();
        readGameData();
        m_pGameScreen.g_bdrawLoading = false;

        m_pGameModel.playSavedGame();
        m_pGameScreen.startGame(false, false);
        resumeGame();
    }


    private void resumeGame() {
        removeCommands(m_pGameScreen);
        m_pGameScreen.addCommand(m_cmdPause);
        m_pGameScreen.startGame(true, false);
        m_pDisplay.setCurrent(m_pGameScreen);
	    /* Start	Addition		21-03-2003		for external events	*/
	    activeDisplay = m_pGameScreen;
		//System.out.println("activeDisplay_resumeS"+activeDisplay);
	    /* End	Addition	21-03-2003	*/

    }


    private void newGame() {
        if (m_pGameScreen == null) { // SD
            m_pGameScreen = new GameScreen(this);
            m_pGameModel = new GameModel(this, m_pGameScreen);
            m_pGameScreen.setModel(m_pGameModel);
        }
        m_bSavedGame = false;
        m_bHasBeenSaved = false;
        m_pMenuScreen.level1Index = 1;

        removeCommands(m_pGameScreen);
        m_pGameScreen.addCommand(m_cmdPause);
        m_pDisplay.setCurrent(m_pGameScreen);
	    /* Start	Addition		21-03-2003		for external events	*/
	    activeDisplay = m_pGameScreen;
		//System.out.println("activeDisplay_newG"+activeDisplay);
	    /* End	Addition	21-03-2003	*/


        if (m_pGameModel.g_bPaused) {
            m_pGameScreen.startGame(true, false);
        }
        m_pGameScreen.startGame(false, true);
    }


    private void saveAndQuit() {
        m_pGameScreen.g_bdrawSaving = true;
        m_pGameScreen.repaint();
        m_pGameScreen.serviceRepaints();
        m_bSavedGame = true;
        saveGameData();
        m_bHasBeenSaved = true;
        saveOptions();
        m_pMenuScreen.level1Index = 0;
    }


    void pauseGame() {
		/* Start	Addition	21-03-2003	for external events	*/
		if(activeDisplay != null && activeDisplay == m_pGameScreen){
		/* End		Addition	21-03-2003	*/
        	m_pGameScreen.m_selectedIndex = 0;
        	removeCommands(m_pGameScreen);
        	m_pGameScreen.addCommand(m_cmdSelect);
        	m_pGameScreen.pauseGame();
        	m_pDisplay.setCurrent(m_pGameScreen);
	    	/* Start	Addition		21-03-2003		for external events	*/
	    	activeDisplay = m_pGameScreen;
			//System.out.println("activeDisplay_pause"+activeDisplay);
	    	/* End	Addition	21-03-2003	*/
		}

    }


    private void showText(int messageId) {
        m_pTextScreen.init(messageId);
        m_pDisplay.setCurrent(m_pTextScreen);
	    /* Start	Addition		21-03-2003		for external events	*/
	    activeDisplay = m_pTextScreen;
		//System.out.println("activeDisplay_text"+activeDisplay);

	    /* End	Addition	21-03-2003	*/

    }


    private void showHighScores() {
        m_pHiScoreScreen.setCommandListener(this);
        m_pDisplay.setCurrent(m_pHiScoreScreen);
	    /* Start	Addition		21-03-2003		for external events	*/
	    activeDisplay = m_pHiScoreScreen;
		//System.out.println("activeDisplay_high"+activeDisplay);

	    /* End	Addition	21-03-2003	*/

        m_pHiScoreScreen.showHighScores();
    }


    private void removeCommands(Displayable pDisplayable) {
        pDisplayable.removeCommand(m_cmdPause);
        pDisplayable.removeCommand(m_cmdSelect);
    }


    private void showMenuScreen() {
        m_pDisplay.setCurrent(m_pMenuScreen);
	    /* Start	Addition		21-03-2003		for external events	*/
	    activeDisplay = m_pMenuScreen;
		//System.out.println("activeDisplay_menu"+activeDisplay);
	    /* End	Addition	21-03-2003	*/

        m_pMenuScreen.repaint();
    }


    void showHiScores(int score) {
        m_pHiScoreScreen.setPeakScore(score);
        m_pHiScoreScreen.enterHighScore();
    }


    private void exitApp() {
        try {
            saveOptions();
            if (!m_bHasBeenSaved) {
                saveGameData();
            }
            destroyApp(true);
            notifyDestroyed();
        } catch (MIDletStateChangeException e) {}
    }


    private void saveOptions() {
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        DataOutputStream pDos = new DataOutputStream(baos);

        try {
            pDos.writeBoolean(m_bSoundOn);
            pDos.writeBoolean(m_bSavedGame);
        } catch (Exception ex) {
            return;
        }

        RecordStore rs = null;
        byte[] buf = baos.toByteArray();

        try {
            rs = RecordStore.openRecordStore("qbertopt", true);
            rs.setRecord(1, buf, 0, buf.length);
        } catch (InvalidRecordIDException ire) {
            // add record if it doesn't exist
            try {
                rs.addRecord(buf, 0, buf.length);
            } catch (Exception e) {
            }
        } catch (Exception e) {
                // nothing.. maybe full
        } finally {
            try {
                if (rs != null)
                    rs.closeRecordStore();
            } catch (Exception e) {}
        }
    }


    private void readOptions() {
        RecordStore rs = null;
        try {
            rs = RecordStore.openRecordStore("qbertopt", true);
            DataInputStream pDis = new DataInputStream(new ByteArrayInputStream(rs.getRecord(1)));
            // read the options
            m_bSoundOn = pDis.readBoolean();
            m_bSavedGame = pDis.readBoolean();
        } catch (Exception e) {
            m_bSoundOn = false; // this should already be false; if sound should be enabled by default, change to true here
        } finally {
            if (rs != null) {
                try {
                    rs.closeRecordStore();
                } catch (Exception e) {}
            }
        }
    }


    private void saveGameData() {
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        DataOutputStream pDos = new DataOutputStream(baos);

        try {
            m_pGameModel.saveAll(pDos);
            m_pGameScreen.g_bdrawSaving = false;
            showMenuScreen(); // SD ?
        } catch (Exception e) {
            return;
        }

        RecordStore rs = null;
        byte[] buf = baos.toByteArray();

        try {
            rs = RecordStore.openRecordStore("qbertdata", true);
            rs.setRecord(1, buf, 0, buf.length);
        } catch (InvalidRecordIDException ire) {
            // add record if it doesn't exist
            try {
                rs.addRecord(buf, 0, buf.length);
            } catch (Exception ex) {
            }
        } catch (Exception e) {
                // nothing.. maybe full
        } finally {
            try {
                if (rs != null)
                    rs.closeRecordStore();
            } catch (Exception ex) {
            }
        }
    }


    private void readGameData() {
        RecordStore rs = null;
        try {
            rs = RecordStore.openRecordStore("qbertdata", true);
            DataInputStream pDis = new DataInputStream(new ByteArrayInputStream(rs.getRecord(1)));
            m_pGameScreen.startGame(false, false);
            m_pGameModel.loadSavedGame(pDis);
            m_pGameScreen.pauseGame();
        } catch (Exception ex) {
            m_bSavedGame = false;
        } finally {
            if (rs != null) {
                try {
                    rs.closeRecordStore();
                } catch (Exception ex) {
                }
            }
        }
    }
}