坦克大战代码

import java.awt.* ;
import javax.swing.* ;
import java.awt.event.*;

public class Tank3 extends JFrame {

private static final long serialVersionUID = 1L;

Tank3( String title ){ //重构
this.setTitle(title) ; //窗体名称
this.setSize(415 , 500) ; //窗体大小
this.setLocation(300 , 300) ; //窗体位置
this.setBackground(Color.WHITE) ;

//MyTank3 singlePlayer1 = new MyTank3();// 类Mytank3中包含所有游戏信息
//this.add( singlePlayer1 );
//this.addKeyListener(singlePlayer1);
//new Thread(singlePlayer1).start();

MyBullet3 singlePlayer2 = new MyBullet3();
this.add( singlePlayer2 );
this.addKeyListener(singlePlayer2);
new Thread(singlePlayer2).start();
}

public static void main(String[] args) {
Tank3 h = new Tank3("坦克大战(版本1.1)") ;
h.setVisible(true) ;
}
}


// 存储地图网格数据的类，以判断坦克碰撞，0为可行区域，大于0为不可行区域
class groundData {
volatile public int ground[][] = new int [18][18];
}

//主线程，我方坦克线程，paint线程 三合一 (这里应该更明确地对象化)
class MyTank3 extends JPanel implements KeyListener ,Runnable{

private static final long serialVersionUID = 1L;
groundData o = new groundData();//地图数据，会在本线程中实时更新
int perStep = 1, sleepTime = 7;//线程的睡眠时间以及每次睡眠后坦克移动的像素
int x = 105 , y = 355 ;//我方坦克出生点
int op = 0 ; // 0:up 1:right 2:down 3:left 方向指示
int tankStep = 0; //用于在tank移动中计数
int life = 100 , score = 0 , difficulty = 20 ; //生命，得分，难度
int enemyNum = 0 , enemyMax = 6;//现有敌人数量，画面允许敌人的最大数量
boolean stuck = false ;//坦克是否无法前行
MyBullet3 bullet = new MyBullet3();//我方坦克炮弹
//敌方坦克炮弹
MyBullet3 sBullet = new MyBullet3();
MyBullet3 enemyBullet[] = {sBullet,sBullet,sBullet,sBullet,sBullet,sBullet,sBullet,sBullet,sBullet,sBullet,sBullet,sBullet,sBullet,sBullet,sBullet,
sBullet,sBullet,sBullet,sBullet,sBullet,sBullet,sBullet,sBullet,sBullet,sBullet,sBullet,sBullet,sBullet,sBullet,sBullet,
sBullet,sBullet,sBullet,sBullet,sBullet,sBullet,sBullet,sBullet,sBullet,sBullet,sBullet,sBullet,sBullet,sBullet,sBullet,
sBullet,sBullet,sBullet,sBullet,sBullet,sBullet,sBullet,sBullet,sBullet,sBullet,sBullet,sBullet,sBullet,sBullet,sBullet};
//敌方坦克
EnemyTank sEnemy = new EnemyTank(2,5,5,o,-2);
EnemyTank enemy[] = {sEnemy,sEnemy,sEnemy,sEnemy,sEnemy,sEnemy,sEnemy,sEnemy,sEnemy,sEnemy,sEnemy,sEnemy,sEnemy,sEnemy,sEnemy,
sEnemy,sEnemy,sEnemy,sEnemy,sEnemy,sEnemy,sEnemy,sEnemy,sEnemy,sEnemy,sEnemy,sEnemy,sEnemy,sEnemy,sEnemy,
sEnemy,sEnemy,sEnemy,sEnemy,sEnemy,sEnemy,sEnemy,sEnemy,sEnemy,sEnemy,sEnemy,sEnemy,sEnemy,sEnemy,sEnemy,
sEnemy,sEnemy,sEnemy,sEnemy,sEnemy,sEnemy,sEnemy,sEnemy,sEnemy,sEnemy,sEnemy,sEnemy,sEnemy,sEnemy,sEnemy};

//绘制坦克方法，i为坦克标号，我方为1，敌方大于1
public void drawTank ( Graphics g , int op , int x ,int y,int i){


if( i == 1 ){
g.setColor(Color.yellow);//我方黄色,敌方红色
}else{
g.setColor(Color.red);
}

if(op == 0) {
g.fillRect(x , y , 40 , 40) ; //坦克体
g.setColor(Color.black) ;
g.drawRect(x + 10, y + 5, 20 , 20 );//轮廓
g.drawRect(x , y , 40 , 40 );
g.drawRect(x - 5, y - 5, 10 , 50 );//左右两侧履带
g.fillOval(x - 5 , y - 5 , 10 , 10) ;
g.fillOval(x - 5 , y + 5 , 10 , 10) ;
g.fillOval(x - 5 , y + 15 , 10 , 10) ;
g.fillOval(x - 5 , y + 25 , 10 , 10) ;
g.fillOval(x - 5 , y + 35 , 10 , 10) ;
g.drawRect(x + 35 , y - 5, 10 , 50 );
g.fillOval(x + 35 , y - 5 , 10 , 10) ;
g.fillOval(x + 35 , y + 5 , 10 , 10) ;
g.fillOval(x + 35 , y + 15 , 10 , 10) ;
g.fillOval(x + 35 , y + 25 , 10 , 10) ;
g.fillOval(x + 35 , y + 35 , 10 , 10) ;
g.fillRect(x + 15 , y - 20 , 10 , 40) ; //炮口
g.fillOval(x + 5 , y + 30 , 10 , 10) ; //天线
g.fillOval(x + 25 , y + 30 , 10 , 10) ;
}// end of if ( op == 1 )

if(op == 1) {
g.fillRect(x , y , 40 , 40) ;
g.setColor(Color.black) ;
g.drawRect(x + 15, y + 10, 20 , 20 );
g.drawRect(x , y , 40 , 40 );
g.drawRect(x - 5, y - 5, 50 , 10 );
g.fillOval(x - 5 , y - 5 , 10 , 10) ;
g.fillOval(x + 5 , y - 5 , 10 , 10) ;
g.fillOval(x + 15 , y - 5 , 10 , 10) ;
g.fillOval(x + 25 , y - 5 , 10 , 10) ;
g.fillOval(x + 35 , y - 5 , 10 , 10) ;
g.drawRect(x - 5 , y + 35, 50 , 10 );
g.fillOval(x - 5 , y+35 , 10 , 10) ;
g.fillOval(x + 5 , y+35 , 10 , 10) ;
g.fillOval(x + 15 , y+35 , 10 , 10) ;
g.fillOval(x + 25 , y+35 , 10 , 10) ;
g.fillOval(x + 35 , y+35 , 10 , 10) ;
g.fillRect(x + 20 , y + 15 , 40 , 10) ;
g.fillOval(x , y + 5 , 10 , 10) ;
g.fillOval(x , y + 25 , 10 , 10) ;
}// end of if (op==2)

if(op == 2) {
g.fillRect(x , y , 40 , 40) ;
g.setColor(Color.black) ;
g.drawRect(x + 10, y + 15, 20 , 20 );
g.drawRect(x , y , 40 , 40 );
g.drawRect(x - 5, y - 5, 10 , 50 );
g.fillOval(x - 5 , y - 5 , 10 , 10) ;
g.fillOval(x - 5 , y + 5 , 10 , 10) ;
g.fillOval(x - 5 , y + 15 , 10 , 10) ;
g.fillOval(x - 5 , y + 25 , 10 , 10) ;
g.fillOval(x - 5 , y + 35 , 10 , 10) ;
g.drawRect(x + 35 , y - 5, 10 , 50 );
g.fillOval(x + 35 , y - 5 , 10 , 10) ;
g.fillOval(x + 35 , y + 5 , 10 , 10) ;
g.fillOval(x + 35 , y + 15 , 10 , 10) ;
g.fillOval(x + 35 , y + 25 , 10 , 10) ;
g.fillOval(x + 35 , y + 35 , 10 , 10) ;
g.fillRect(x + 15 , y + 20 , 10 , 40) ;
g.fillOval(x + 5 , y , 10 , 10) ;
g.fillOval(x + 25 , y , 10 , 10) ;
} //end of if ( op == 3 )

if(op == 3) {
g.fillRect(x , y , 40 , 40) ;
g.setColor(Color.black) ;
g.drawRect(x + 5, y + 10, 20 , 20 );
g.drawRect(x , y , 40 , 40 );
g.drawRect(x - 5, y - 5, 50 , 10 );
g.fillOval
(x - 5 , y - 5 , 10 , 10) ;
g.fillOval(x + 5 , y - 5 , 10 , 10) ;
g.fillOval(x + 15 , y - 5 , 10 , 10) ;
g.fillOval(x + 25 , y - 5 ,

10 , 10) ;
g.fillOval(x + 35 , y - 5 , 10 , 10) ;
g.drawRect(x - 5 , y + 35, 50 , 10 );
g.fillOval(x - 5 , y+35 , 10 , 10) ;
g.fillOval(x + 5 , y+35 , 10 , 10) ;
g.fillOval(x + 15 , y+35 , 10 , 10) ;
g.fillOval(x + 25 , y+35 , 10 , 10) ;
g.fillOval(x + 35 , y+35 , 10 , 10) ;
g.fillRect(x - 20 , y + 15 , 40 , 10) ;
g.fillOval(x + 30 , y + 5 , 10 , 10) ;
g.fillOval(x + 30 , y + 25 , 10 , 10) ;
} //end of if ( op == 4 )
}

//绘图
public void paint( Graphics g ){
super.paint(g);
this.setBackground(Color.WHITE);

//设置下方血条和得分的显示
g.setColor(Color.black) ;
g.fillRect(0 , 400 , 415 , 100) ;
g.setColor(Color.red) ;
g.fillRect(50 , 420 , life * 3 , 10) ;
//为坦克的阻塞区域填色，调试用
// for ( int i = 0; i < 18 ; i++ )
// for ( int j = 0; j < 18 ; j++ )
// if (o.ground[i][j] == 1 ) {
// g.setColor(Color.red) ;
// g.fillRect((i-1)*25, (j-1)*25, 25, 25);}
// else if (o.ground[i][j] == 2 ) {
// g.setColor(Color.blue) ;
// g.fillRect((i-1)*25, (j-1)*25, 25, 25);}
// else if (o.ground[i][j] == 3 ) {
// g.setColor(Color.yellow) ;
// g.fillRect((i-1)*25, (j-1)*25, 25, 25);}
// else if (o.ground[i][j] == 4 ) {
// g.setColor(Color.green) ;
// g.fillRect((i-1)*25, (j-1)*25, 25, 25);}
// else if (o.ground[i][j] == 5 ) {
// g.setColor(Color.gray) ;
// g.fillRect((i-1)*25, (j-1)*25, 25, 25);}
g.setColor(Color.white) ;
g.drawString("生命:" , 10 , 430 ) ;
g.drawRect(50 , 420 , 300 , 10) ;
g.drawString("得分: "+ score , 10 , 450) ;
g.setColor(Color.gray);
//画网格线，调试用
// for ( int i = 0; i <= 405 ; i = i+50) {
// g.drawLine(0, i , 425, i);
// g.drawLine(i, 0, i, 450);
// }

//绘制本方坦克
drawTank( g , op , x , y , 1 );

//绘制本方炮弹
if ( bullet.flying ){
g.fillOval(bullet.bx, bullet.by, 10, 10);
}

//绘制敌方坦克与炮弹
for (int i = 0; i < enemyNum ; i++)
if (enemy[i]!=null)
if (enemy[i].alive){
drawTank ( g , enemy[i].op , enemy[i].x , enemy[i].y , i+2);
if (enemyBullet[i].flying) g.fillOval(enemyBullet[i].bx, enemyBullet[i].by, 10, 10);
}

}

//坦克前行
public void stepForward(MyTank3 ref){
if (tankStep > 0){//为对齐格子，每次必须行进25像素
switch (op) {
case 0 : {
ref.y = ref.y - perStep ;
ref.tankStep --;
}
break;
case 1 : {
ref.x = ref.x + perStep;
ref.tankStep --;
}
break;
case 2 : {
ref.y = ref.y + perStep;
ref.tankStep --;
}
break;
case 3 : {
ref.x = ref.x - perStep;
ref.tankStep --;
}
break;
}
}
}

//主线程
public void run() {
int j = 0 , i = 0;
//将地图
四周设置成最高的阻塞等级
for ( i=0; i<18 ;i++ ){
o.ground[0][i] = 255;
o.ground[17][i] = 255;
o.ground[i][0] = 255;
o.ground[i][17] = 255;
}

//我方坦克出生点，坦克的阻塞等级为坦克标号，即1
o.ground[(int)((

x+20)/25)][(int)((y+20)/25)]=1;
o.ground[(int)((x+45)/25)][(int)((y+20)/25)]=1;
o.ground[(int)((x+20)/25)][(int)((y+45)/25)]=1;
o.ground[(int)((x+45)/25)][(int)((y+45)/25)]=1;//由像素坐标转到游戏坐标

//大循环
for (int a = 0; a<60000; a++){

stepForward(this);//行进

if (tankStep==13){//行进一半时移动格子的阻塞属性以配合坦克移动
switch (op) {
case 0 : {
i=(int)((x+20)/25);
j=(int)((y+32)/25);
o.ground[i][j-1] = 1;
o.ground[i+1][j-1] = 1;
o.ground[i][j+1] = 0;
o.ground[i+1][j+1] = 0;
}
break;
case 1 : {
i=(int)((x+8)/25);
j=(int)((y+20)/25);
o.ground[i+2][j] = 1;
o.ground[i+2][j+1] = 1;
o.ground[i][j] = 0;
o.ground[i][j+1] = 0;
}
break;
case 2 : {
i=(int)((x+20)/25);
j=(int)((y+8)/25);
o.ground[i][j+2] = 1;
o.ground[i+1][j+2] = 1;
o.ground[i][j] = 0;
o.ground[i+1][j] = 0;
}
break;
case 3 : {
i=(int)((x+32)/25);
j=(int)((y+20)/25);
o.ground[i-1][j] = 1;
o.ground[i-1][j+1] = 1;
o.ground[i+1][j] = 0;
o.ground[i+1][j+1] = 0;
}
break;
}
}// if step == 13

try{ //sleep，否则游戏太快
Thread.sleep(sleepTime) ;
}catch(Exception e) {
e.printStackTrace() ;
}

//以下是敌军回合
if (enemyNum < enemyMax) {//若场上坦克数未达到最大
i = 5+175*(int)(3*Math.random());//三个随即出生点
j = 5 ;
// if (enemy[k] != null)
//若该出生点未被堵塞
if( o.ground[(int)((i+20)/25)][1]+o.ground[(int)((i+45)/25)][1]+o.ground[(int)((i+20)/25)][2]+o.ground[(int)((i+45)/25)][2] < 1 ){
for ( int k = 0 ; k < enemyMax ; k++)
//坦克少或坦克死了，则出生
if ((k>=enemyNum)||(enemy[k].alive==false))
{
groundData a1 = new groundData();
enemy[k] = new EnemyTank( 2 , i , j , a1 , k );//k是坦克数组的标号，k+2即为坦克及其地面标号
this.o.ground[(int)((i+20)/25)][(int)((j+20)/25)]=k+2;
this.o.ground[(int)((i+45)/25)][(int)((j+20)/25)]=k+2;
this.o.ground[(int)((i+20)/25)][(int)((j+45)/25)]=k+2;
this.o.ground[(int)((i+45)/25)][(int)((j+45)/25)]=k+2; //出生点阻塞

new Thread( enemy[k] ).start();//开始活动

enemy[k].getGroundData(this);//敌军载入全局地图
enemyNum++;//敌军数加1
break;//跳出循环，一次只出生一辆坦克
}
}
}


for ( int k = 0 ; k < enemyNum ; k++)
if (enemy[k].alive)//如果活动
{
enemy[k].getGroundData(this);//
刷新全局地图
//将自己的位置写入全局地图
if (( enemy[k].tankStep == 13 )&&(enemy[k].stepping)&&(!enemy[k].stuck)) regGround( enemy[k].op , enemy[k].x , enemy[k].y , this , k );
//判断自己的子弹是否击中阻塞
if ((enemyBullet[k].flying)&&((enemyBullet[k].bx+5)%<=4)&&((enemyBullet[k].by+5)%<=4)) bulletHit( enemyBullet[k] , o , enemyBullet[k].bk );
}
//己方坦克是否击中阻塞
if ((bullet.flying)&&((bullet.bx+5)%<=4)&&((bullet.by+5)%<=4)) bulletHit( bullet , o , bullet.bk );
//

重画
this.repaint();

}
}

//敌军坦克对地图的刷新(注册)
public void regGround(int op , int x , int y , MyTank3 ref , int k ) {

int i , j ;


ref.enemy[k].stepping = false ; //stepping为真时，进行地面阻塞移动，移动后将stepping置为false，即一次移动只注册一次
switch (op) {
case 0 : {
i=(int)((x+20)/25);
j=(int)((y+32)/25);
ref.o.ground[i][j-1] = 2+k;
ref.o.ground[i+1][j-1] = 2+k;
ref.o.ground[i][j+1] = 0;
ref.o.ground[i+1][j+1] = 0;
}
break;
case 1 : {
i=(int)((x+8)/25);
j=(int)((y+20)/25);
ref.o.ground[i+2][j] = 2+k;
ref.o.ground[i+2][j+1] = 2+k;
ref.o.ground[i][j] = 0;
ref.o.ground[i][j+1] = 0;
}
break;
case 2 : {
i=(int)((x+20)/25);
j=(int)((y+8)/25);
ref.o.ground[i][j+2] = 2+k;
ref.o.ground[i+1][j+2] = 2+k;
ref.o.ground[i][j] = 0;
ref.o.ground[i+1][j] = 0;
}
break;
case 3 : {
i=(int)((x+32)/25);
j=(int)((y+20)/25);
ref.o.ground[i-1][j] = 2+k;
ref.o.ground[i-1][j+1] = 2+k;
ref.o.ground[i+1][j] = 0;
ref.o.ground[i+1][j+1] = 0;
}
break;
}
}

//按键功能
public void keyPressed(KeyEvent e) {
int i,j;

i = (int)((x+20))/25;
j = (int)((y+20))/25;
if(e.getKeyCode() == KeyEvent.VK_UP) {
if (tankStep <= 0) {
stuck = false;
op = 0 ;
tankStep = 25 ;
if((o.ground[i][j-1]>0)||(o.ground[i+1][j-1]>0)) { //转弯后判断是否阻塞
stuck = true ;
tankStep = 0 ;//如果阻塞则不移动
}
}
}

if(e.getKeyCode() == KeyEvent.VK_RIGHT) {
if (tankStep <= 0) {
stuck = false;
op = 1 ;
tankStep = 25 ;
if((o.ground[i+2][j]>0)||(o.ground[i+2][j+1]>0)) {
stuck = true ;
tankStep = 0 ;
}
}
}

if(e.getKeyCode() == KeyEvent.VK_DOWN) {
if (tankStep <= 0) {
stuck = false;
op = 2 ;
tankStep = 25 ;
if((o.ground[i][j+2]>0)||(o.ground[i+1][j+2]>0)) {
stuck = true ;
tankStep = 0 ;
}
}
}

if(e.getKeyCode() == KeyEvent.VK_LEFT) {
if (tankStep <= 0) {
stuck = false;
op = 3 ;
tankStep = 25 ;
if((o.ground[i-1][j]>0)||(o.ground[i-1][j+1]>0)) {
stuck = true ;
tankStep = 0 ;
}
}
}

if(e.getKeyCode() == KeyEvent.VK_SPACE){
if (bullet.flying == false ){//若炮弹在飞则发不出第二发
ne
w Thread(bullet).start();
bullet.bx = x + 15;
bullet.by = y + 15;
bullet.bop = op;
bullet.flying = true;
}
}

//esc直接退出
if(e.getKeyCode() == KeyEvent.VK_ESCAPE){
System.exit(0);
}

this.repaint();


}

//重写
public void keyReleased(KeyEvent arg0) {

}

public void keyTyped(KeyEvent arg0) {

}

//判断子弹是否击中
public void bulletHit( MyBullet3 ref , groundData o , int k ){
int i , j ;
i = (int)((ref.bx+5)/25);
j = (int)((ref.by+5)/25);
// System.out.print("hit: i "+i+" , j "+j+" \n");
if (k == 1) {//我方

击中
if (o.ground[i][j]>1){
ref.flying = false;
if (o.ground[i][j]<100) killTank( o.ground[i][j]-2 , this );
}
if (o.ground[i+1][j]>1){
ref.flying = false;
if (o.ground[i+1][j]<100) killTank( o.ground[i+1][j]-2 , this );
}
if (o.ground[i][j+1]>1){
ref.flying = false;
if (o.ground[i][j+1]<100) killTank( o.ground[i][j+1]-2 , this );
}
if (o.ground[i+1][j+1]>1){
ref.flying = false;
if (o.ground[i+1][j+1]<100) killTank( o.ground[i+1][j+1]-2 ,this );
}
}
if (k > 1){//敌方击中
if ((o.ground[i][j]>0)&&(o.ground[i][j]!=k)){
ref.flying = false;
if ( o.ground[i][j] == 1 ) life = life - difficulty;
}
if ((o.ground[i+1][j]>0)&&(o.ground[i+1][j]!=k)){
ref.flying = false;
if (o.ground[i+1][j] == 1 ) life = life - difficulty;
}
if ((o.ground[i][j+1]>0)&&(o.ground[i][j+1]!=k)){
ref.flying = false;
if (o.ground[i][j+1] == 1 ) life = life - difficulty;
}
if ((o.ground[i+1][j+1]>0)&&(o.ground[i+1][j+1]!=k)){
ref.flying = false;
if (o.ground[i+1][j+1] == 1 ) life = life - difficulty;
if ( life <= 0 ){
// 弹出对话框
JOptionPane.showMessageDialog(null,
"你的得分 : " + score,
"游戏结束!",
JOptionPane.ERROR_MESSAGE);
// 结束游戏
System.exit(0) ;
}
}
}


}

//击毁敌方坦克
public void killTank( int k , MyTank3 ref ){

int i , j , m , n;

if (ref.enemy[k].alive) {
ref.enemyNum--;
ref.enemy[k].alive = false ;
}
score = score + 100 ;
i = (int)((ref.enemy[k].x+20)/25);
j = (int)((ref.enemy[k].y+20)/25);
// System.out.print("explose: i "+i+" , j "+j+" , k"+k +" \n");
for ( n = i-1 ; n < i+3 ; n++ )
for ( m = j-1 ; m < j+3 ; m++ )
if ((m>0)&&(m<18)&&(n>0)&&(n<18))
if ( ref.o.ground[n][m] == k+2 )
{ ref.o.ground[n][m] = 0 ; //消除地面阻塞
// System.out.print("m "+m+", n "+n+" \n") ;
}
}

//炮弹类
class MyBullet3 extends Thread {

int bx = 0 , by = 0 , bop = 0 , speed = 8, bk = 1;//bk为射出当前炮弹的坦克标号
boolean flying = false;

public void r
un() {

flying = true;
if (bk > 1) speed = 6;
for (int a = 0; a<60000; a++){
if (flying) {
switch (bop) {
case 0 : {
by = by - speed ;
}
break;
case 1 : {
bx = bx + speed;
}
break;
case 2 : {
by = by + speed;
}
break;
case 3 : {
bx = bx - speed;
}
break;
}
}

if ((bx<0)||(bx>400)||(by<0)||(by>400))
{
// System.out.print(" Bullet out of Frame!");
flying = false;
}

if (flying==false) return;

try{
Thread.sleep(25) ;
}catch(Exception e) {
e.printStackTrace() ;
}

}// end of for
}// end of run
}// end of class

//敌方坦克类
class EnemyTank extends Thread {

groundData o;
int x = 0, y = 0 , op = 0 ,tk = 0;
boolean alive = false , stuck = false ,stepping = false ;
int

tankStep = 0 , perStep = 1;


//重构方法
EnemyTank(int top,int tx, int ty, groundData to , int k ){
this.x = tx ;
this.y = ty ;
this.o = to ;
this.op = top ;
this.alive = true;
= k;
this.o.ground[(int)((x+20)/25)][(int)((y+20)/25)]=k+2;
this.o.ground[(int)((x+45)/25)][(int)((y+20)/25)]=k+2;
this.o.ground[(int)((x+20)/25)][(int)((y+45)/25)]=k+2;
this.o.ground[(int)((x+45)/25)][(int)((y+45)/25)]=k+2;
}

public void run(){

for (int a = 0; a<60000; a++){
if (alive) {
if ( tankStep == 0 ){
if ((stuck)||(Math.random()<0.1)) turnAround(this); //遇到阻塞或者随机 转弯
tankStep = 25;
stepping = true;
judgeStuck(this); //判断是否被堵塞
}
proceed (this);
if ((Math.random()<0.3)&&(enemyBullet[tk].flying == false )) shootBullet();//未发射炮弹情况下随即发射
} else return ;


try{
Thread.sleep(20) ;
}catch(Exception e) {
e.printStackTrace() ;
}

}//end of for
}//end of run

void shootBullet( ){

//申请新的炮弹
new Thread(enemyBullet[tk]).start();
enemyBullet[tk].speed = 6;
enemyBullet[tk].bx = x + 15;
enemyBullet[tk].by = y + 15;
enemyBullet[tk].bop = op;
enemyBullet[tk].bk = tk+2;
enemyBullet[tk].flying = true;
}

void judgeStuck( EnemyTank ref ){

int i,j;
i = (int)((x+20))/25;
j = (int)((y+20))/25;

stuck = false ;
switch (op){
case 0 : if((o.ground[i][j-1]>0)||(o.ground[i+1][j-1]>0)) {
ref.stuck = true ;
} break;
case 1 : if((o.ground[i+2][j]>0)||(o.ground[i+2][j+1]>0)) {
ref.stuck = true ;
} break;
case 2 : if((o.ground[i][j+2]>0)||(o.ground[i+1][j+2]>0)) {
ref.stuck = true ;
} break;
case 3 : if((o.ground[i-1][j]>0)||(o.ground[i-1][j+1]>0)) {
ref.stuck = true ;
} break;
}


}

void turnAround( EnemyTank ref){
int i = (int)(Math.random()*2)+1;//i= 1 2 3 中的随机数
ref.op = ( op + i ) % 4 ;//随机转弯
}

void getGroundData ( MyTank3 d ){

this.o = d.o; //载入地图
}


void proceed( EnemyTank ref ) {

if (tankStep > 0){
if( stuck == false)
switch (op) {
case 0 : {
ref.y = ref.y - perStep ;
ref.tankStep --;
}
break;
case 1 : {
ref.x = ref.x + perStep;
ref.tankStep --;
}
break;
case 2 : {
ref.y = ref.y + perStep;
ref.tankStep --;
}
break;
case 3 : {
ref.x = ref.x - perStep;
ref.tankStep --;
}
break;
}
else tankStep --;//遇到堵塞后停止一会再转弯
}

}
}//end of class
}