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] = (rnd.nextint()) % 3; //vy
break;
case bullet_type_top:
bullets[i][1] = (rnd.nextint() & 0x7fffffff) % width;
bullets[i][2] = -5;
bullets[i][3] = (rnd.nextint()) % 3; //vx
bullets[i][4] = (rnd.nextint() & 0x7fffffff) % 3 + 1; //vy
break;
case bullet_type_bottom:
bullets[i][1] = (rnd.nextint() & 0x7fffffff) % width;
bullets[i][2] = height + 5;
bullets[i][3] = (rnd.nextint()) % 3; //vx
bullets[i][4] = ( (rnd.nextint() & 0x7fffffff) % 3 + 1) * -1; //vy
break;
}
}
public void updata(int i){
bullets[i][1]+=bullets[i][3];
bullets[i][2]+=bullets[i][4];
if(bullets[i][1]<-5 bullets[i][1]>width+5){
bullets[i][3]*=-1;
}
if(bullets[i][2]<-5 bullets[i][2]>height+5){
bullets[i][4]*=-1;
}
}
private void paint(graphics g,int i){
updataspritepos(i);
sprite.paint(g);
}
public void paint(graphics g) {
for (int i = 0; i < bullets.length; i++) {
if(bullets[i][5]==0){
continue;
}
sprite.setposition(bullets[i][1],bullets[i][2]);
sprite.paint(g);
}
}
public void refreshbullets(sprite planesprite, boolean needcollision){
for (int i = 0; i < bullets.length; i++) {
if(bullets[i][5]==0){
continue;
}
if(needcollision){
//system.out.println("needcollision ");
if (iscollision(planesprite, i, 10)) {
//system.out.println("collision ");
navigate.mc.gameover = true;
navigate.mc.explosion.sprite.setposition(bullets[i][1] - 16,
bullets[i][2] - 16);
bullets[i][5] = 0;
continue;
}
}
updata(i);
}
}
private boolean iscollision(sprite sprite,int i,int range){
//updataspritepos(i);
//return sprite.collideswith(this.sprite,true);
boolean result=false;
int planexcenter=sprite.getx()+12;
int planeycenter=sprite.gety()+12;
int bulletxcenter=bullets[i][1]+3;
int bulletycenter=bullets[i][2]+3;
if(math.abs(planexcenter-bulletxcenter) < range){
if (math.abs(planeycenter - bulletycenter )< range) {
result = true;
}
}
return result;
}
private void updataspritepos(int i){
sprite.setposition(bullets[i][1],bullets[i][2]);
}
/* no use now
public void resetdeadbullet(){
for (int i = 0; i < bullets.length; i++) {
if(bullets[i][5]==0){//dead bullet
initbullet(i);
}
}
}
*/
public void killbullets(sprite planesprite,int range){
for (int i = 0; i < bullets.length; i++) {
if(bullets[i][5]!=0){//alive bullets
if(iscollision(planesprite, i, range)){
bullets[i][5]=0;
initbullet(i);
}
}
}
}
}
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