1、FlyMidlet.java

package fly;

import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import java.util.*;

/**
* <p>Title: </p>
* <p>Description: </p>
* <p>Copyright: Copyright (c) 2004</p>
* <p>Company: </p>
* @author not attributable
* @version 1.0
*/

public class FlyMidlet extends MIDlet {
Navigate ng;
public FlyMidlet() {
ng=Navigate.getInstance(this);
}
protected void startApp() {
System.out.println("startApp");
ng.display.setCurrent(ng.mc);
printInfo();
}
protected void pauseApp() {
System.out.println("pauseApp");
}
protected void destroyApp(boolean parm1) {
System.out.println("destroyApp");
Navigate.mc.stop();
MyGameCanvas.cleanJob();
Navigate.cleanJob();
}

private void printInfo(){
System.out.println("FlyMidlet printInfo() start:");
System.out.println("FlyMidlet printInfo() end:");
}

}

2、Bullets.java

package fly;
import javax.microedition.lcdui.game.*;
import javax.microedition.lcdui.*;
import java.util.Random;
/**
* <p>Title: </p>
* <p>Description: </p>
* <p>Copyright: Copyright (c) 2004</p>
* <p>Company: </p>
* @author not attributable
* @version 1.0
*/

public class Bullets extends GameObject {
private int[][] bullets;
private int bulletstotal;
private Random rnd;
public static final int BULLET_TYPE_LEFT=0;
public static final int BULLET_TYPE_RIGHT=1;
public static final int BULLET_TYPE_TOP=2;
public static final int BULLET_TYPE_BOTTOM=3;
private int width,height;

public Bullets(Image img,int picwidth,int picheight,int bulletstotal,int width,int height) {
super(img,picwidth,picheight);
this.bulletstotal=bulletstotal;
bullets=new int[bulletstotal][6];
rnd=new Random();
this.width=width;
this.height=height;
}

public void initBullets(){
for (int i = 0; i < bullets.length; i++) {
initBullet(i);
}
}

private void initBullet(int i) {
bullets[i][0] = (rnd.nextInt() & 0x7fffffff) % 4; //type
bullets[i][5] = 1; //alive
switch (bullets[i][0]) {
case BULLET_TYPE_LEFT:
bullets[i][1] = -5;
bullets[i][2] = (rnd.nextInt() & 0x7fffffff) % height;
bullets[i][3] = (rnd.nextInt() & 0x7fffffff) % 3 + 1; //vx
bullets[i][4] = (rnd.nextInt()) % 3; //vy
break;
case BULLET_TYPE_RIGHT:
bullets[i][1] = width + 5;
bullets[i][2] = (rnd.nextInt() & 0x7fffffff) % height;
bullets[i][3] = ( (rnd.nextInt() & 0x7fffffff) % 3 + 1) * -1; //vx
bullets[i][4]

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