游戏

开发平台：
Java

GUI.java：源码内容
							package com.cpt;
import javax.microedition.lcdui.*;
import javax.microedition.lcdui.game.*;
class GUI extends GameCanvas {
    private Key601 midlet;
    private Graphics g;
    private Font font;
    private int width = 0;
    private int height = 0;
    private Menu menu;
    private String leftOption;
    private String rightOption;
    private String[] menuOptions;
    private int currentlySelectedIndex = 0;
    private boolean menuIsActive = false;
    public GUI(Key601 midlet) {
        super(false);
        this.midlet = midlet;
        font = Font.getFont(Font.FACE_SYSTEM, Font.STYLE_PLAIN, Font.SIZE_SMALL);
        setFullScreenMode(true);
        width = getWidth();
        height = getHeight();
        g = getGraphics();
        leftOption = "Options";
        rightOption = "Exit"; 
        menuOptions = new String[] {"Play", "Option", "Highscore", "Exit"};
        menu = new Menu(leftOption, rightOption, menuOptions);
    }
    public void start() {
        clearScreen();
        menu.drawInactiveMenu(this, g);
    }
    private int LEFT_SOFTKEY_CODE = -6; 
    private int RIGHT_SOFTKEY_CODE = -7;
    protected void keyPressed(int keyCode) {     
        if (menuIsActive) {
            if(keyCode == RIGHT_SOFTKEY_CODE) {               
                clearScreen();
                menu.drawInactiveMenu(this, g);
                menuIsActive = false;
            }            
            keyCode = getGameAction(keyCode);
            if (keyCode == UP) {
                currentlySelectedIndex--;
                if (currentlySelectedIndex < 0) {
                    currentlySelectedIndex = 0; 
                }
                clearScreen();
                menu.drawActiveMenu(this, g, currentlySelectedIndex);
            } else if (keyCode == DOWN) {
                currentlySelectedIndex++;
                if (currentlySelectedIndex >= menuOptions.length) {
                    currentlySelectedIndex = menuOptions.length - 1;
                }
                clearScreen();
                menu.drawActiveMenu(this, g, currentlySelectedIndex); 
            } else if (keyCode == FIRE) {
                clearScreen();
                checkOptions(currentlySelectedIndex);              
                menu.drawInactiveMenu(this, g);
                menuIsActive = false;
            }
        } else {          
            if (keyCode == LEFT_SOFTKEY_CODE) { 
                clearScreen();
                currentlySelectedIndex = 0;
                menu.drawActiveMenu(this, g, currentlySelectedIndex);
                menuIsActive = true;
            } else if (keyCode == RIGHT_SOFTKEY_CODE) {
                exitGUI();
            }
        } 
    } 
    public void exitGUI() {
        midlet.destroyApp(false);
        midlet.notifyDestroyed();
    } 
    public void clearScreen() {
        g.setColor(0xffffff);
        g.fillRect(0, 0,width,height);
        flushGraphics();
    }
    private void checkOptions(int index) {
        switch(index){
            case 0:
                System.out.println("Play");
                break;
            case 1:
                System.out.println("Options");
                break;
            case 2:
                System.out.println("Highscore");
                break;
            case 3:
                exitGUI();               
        }
    }
} 

						