mainmenu.java

游戏超级玛丽的源码

import javax.microedition.lcdui.*;
import java.lang.Thread;

public class MainMenu extends Canvas implements Runnable,CommandListener
{
	private supermario theMidlet;
	private Image Image_bg,Image_mario;
	private int menuIndex=0;
	private Thread thread;
	private Command back,exit;
	private boolean isstart;
	
	
	protected MainMenu(supermario midlet)
	{
		theMidlet=midlet;
		back=new Command("返回",Command.BACK,1);
		exit=new Command("退出",Command.EXIT,2);
		addCommand(back);
		addCommand(exit);
		setCommandListener(this);
		
		try{
			Image_bg=Image.createImage("/menu.png");
			Image_mario=Image.createImage("/smallmario.png");
		}catch(Exception ce){}
		thread = new Thread(this);
		thread.start();
		isstart=true;
	}
	public void paint(Graphics g)
	{
		g.setColor(0x000000);
		g.fillRect(0,0,getWidth(),getHeight());
		g.drawImage(Image_bg,0, 0,Graphics.TOP|Graphics.LEFT);
		g.setClip(45,70+menuIndex*25,13,13);
		g.drawImage(Image_mario,45,70+menuIndex*25,Graphics.TOP|Graphics.LEFT);
	}
	public void run()
	{
		while(isstart) 
		{
			repaint();
			try{
				Thread.sleep(2);
			}catch(InterruptedException e){}
		}
	}
	public void commandAction(Command command,Displayable displayable)
	{
		//if(command==back)
		if(command==exit)
		{
			isstart=false;
			theMidlet.close();
		}
	}
	protected void keyPressed(int code)
	{
		switch(getGameAction(code))
		{
			case(Canvas.UP):
				menuIndex--;
			break;
			case(Canvas.DOWN):
				menuIndex++;
			break;
			case(Canvas.FIRE):
				isstart=false;
				switch(menuIndex)
				{
					case(0)://开始游戏
						isstart=false;
						theMidlet.activateGameScreen();
					break;
					case(1)://最高记录
						theMidlet.activateScoreScreen();
					break;
					case(2)://按键说明
						theMidlet.activateInfoScreen();
					break;
				}
			break;
		}
		if(menuIndex==-1)
			menuIndex=2;
		if(menuIndex==3)
			menuIndex=0;
	}
	
}