[题目描叙]

多线程程序设计：炮打飞机

实验目的：学会使用多线程进行并发程序设计

实验内容：编写一个应用程序模拟大炮打飞机。在GUI界面上，飞机水平飞行，用界面上的按钮控制大炮的运行方向（如向左，向右，向上，向下）。当炮弹碰着飞机后，爆炸。

[程序代码]

MyGame.java

/* * 项目名称：炮打飞机 * 版本：1.0 * 作者：张俊强 * 时间：2016/5/17 * */package drawPanel;import javax.swing.*;import java.awt.*;import java.awt.event.*;import java.util.Vector;public class MyGame extends JFrame{    int killNum=0; private MyPanel mp=null; public static void main(String[] args) {  // TODO Auto-generated method stub  MyGame game=new MyGame(); }  public MyGame(){  mp=new MyPanel();  //启动画板线程  Thread t=new Thread(mp);  t.start();   this.add(mp);   this.addKeyListener(mp);   this.addWindowListener(mp);  this.setSize(600,450);  this.setVisible(true);  this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); } public int getKillNum() {  return killNum; } public void setKillNum(int killNum) {  this.killNum = killNum; }}/* * 窗口监听 * *//* * 画出面板 * */class MyPanel extends JPanel implements KeyListener,Runnable,WindowListener{  /*  *画出一个大炮  */  private Canon canon=null; /*  * 画一些飞机  * */ private Vector<Plane> plane=new Vector<Plane>(); //定义炸弹向量 private Vector<Bomb> bomb=new Vector<Bomb>();  private int planeNum=5; //定义三张图片,三张图片才能组成一颗炸弹 Image image1=null; Image image2=null; Image image3=null; //击杀数 private int killNum=0; public MyPanel(){  JOptionPane.showMessageDialog(this,"上下左右( w,s,a,d ),开火( j )", "提示",JOptionPane.PLAIN_MESSAGE);  canon=new Canon(150,150);  //初始化plane  for(int i=0;i<planeNum;i++){   int y=(int)(Math.random()*-100);   Plane pl=new Plane(y,(i+1)*80-70);   Thread t=new Thread(pl);   t.start();   plane.add(pl);  }  image1=Toolkit.getDefaultToolkit().getImage(Panel.class.getResource("/bomb_1.gif"));  image2=Toolkit.getDefaultToolkit().getImage(Panel.class.getResource("/bomb_2.gif"));  image3=Toolkit.getDefaultToolkit().getImage(Panel.class.getResource("/bomb_3.gif")); } public void paint(Graphics g){  super.paint(g);   g.fillRect(0, 0, 800, 600);  g.drawImage(image1, 0, 0, 1, 1, this);  this.drawCanon(canon.getX(), canon.getY(), g, canon.getDirect());  //画出炸弹爆炸效果  for(int i=0;i<bomb.size();i++)  {  // System.out.println("bombs.size()="+bombs.size());      //取出炸弹   Bomb b=bomb.get(i);      if(b.getLife()>6)   {    g.drawImage(image1, b.getX(), b.getY(), 55, 55, this);   }else if(b.getLife()>3)   {    g.drawImage(image2, b.getX(), b.getY(), 55, 55, this);   }else{    g.drawImage(image3, b.getX(), b.getY(), 55, 55, this);   }      //让b的生命值减小   b.lifeDown();   //如果炸弹生命值为0,就把该炸弹重bombs向量去掉   if(b.getLife()==0)   {    bomb.remove(b);   }        }  //画出子弹  for(int i=0;i<this.canon.ss.size();i++){   Shot shot=this.canon.ss.get(i);     if(shot!=null&&shot.isAlive==true){      g.setColor(Color.red);      g.fillOval(shot.x, shot.y, 3, 3);     }     else if(shot.isAlive==false){      this.canon.ss.remove(shot);     }  }    //画出飞机  for(int i=0;i<plane.size();i++){   this.drawPlane(plane.get(i).getX(), plane.get(i).getY(), g, plane.get(i).getDirect());  }  this.validate(); } //判断是否打中飞机 public boolean hitPlane(Shot s,Plane p){  if((s.x>=p.getX()&&s.x<=p.getX()+55)&&(s.y>=p.getY()&&s.y<=p.getY()+55)){   bomb.add(new Bomb(p.getX(),p.getY()));   killNum++;   s.isAlive=false;   return true;  }  return false; } public void drawCanon(int x,int y,Graphics g,int direct){    g.setColor(Color.cyan);    g.fill3DRect(x, y, 40, 40,false);    g.drawOval(x, y, 40, 40);  switch (direct){  case 0://上      g.drawLine(x+20, y-15, x+20, y+20);      break;  case 1://右   g.drawLine(x+55, y+20, x+20, y+20);    break;  case 2://下   g.drawLine(x+20, y+55, x+20, y+20);    break;  case 3://左   g.drawLine(x-15, y+20, x+20, y+20);    break;  default:break;  } } public void drawPlane(int x,int y,Graphics g,int direct){  switch (direct){  case 0:    g.setColor(Color.red);   g.fillOval(x-6, y+13, 55, 20);   g.setColor(Color.yellow);   g.fillOval(x+10, y, 20, 55);   break;  } } @Override public void keyPressed(KeyEvent e) {//键按压  if(e.getKeyChar()=='w'){   canon.moveUp();   canon.setDirect(0);  }  else if(e.getKeyChar()=='s'){   canon.moveDown();   canon.setDirect(2);  }  else if(e.getKeyChar()=='a'){   canon.moveLeft();   canon.setDirect(3);  }  else if(e.getKeyChar()=='d'){   canon.moveRight();   canon.setDirect(1);  }  if(e.getKeyChar()=='j'){   if(this.canon.ss.size()<10){     this.canon.shotPlane();   }  }  this.repaint(); } @Override public void keyReleased(KeyEvent e) {//键释放  // TODO Auto-generated method stub   } @Override public void keyTyped(KeyEvent e) {//具体值的显示  // TODO Auto-generated method stub   } //画板线程 @Override public void run() {  // TODO Auto-generated method stub  while(true){   try {    Thread.sleep(100);   } catch (InterruptedException e) {    // TODO Auto-generated catch block    e.printStackTrace();   }   for(int i=0;i<this.canon.ss.size();i++){    Shot myShot=this.canon.ss.get(i);    for(int j=0;j<plane.size();j++){     if(plane.get(j).isAlive){      if(this.hitPlane(myShot, plane.get(j))){       plane.get(j).isAlive=false;       plane.remove(j);          int y=(int)(Math.random()*4);          Plane pl=new Plane(0,(y+1)*80-70);       Thread t=new Thread(pl);       t.start();          plane.add(pl);      }     }    }   }   for(int j=0;j<plane.size();j++){       if(plane.get(j).isAlive==false){         plane.remove(j);         int y=(int)(Math.random()*4);         Plane pl=new Plane(0,(y+1)*80-70);      Thread t=new Thread(pl);      t.start();         plane.add(pl);      }    }   this.repaint();  } } @Override public void windowActivated(WindowEvent e) {  // TODO Auto-generated method stub   } @Override public void windowClosed(WindowEvent e) {  // TODO Auto-generated method stub   } @Override public void windowClosing(WindowEvent e) {  // TODO Auto-generated method stub  JOptionPane.showMessageDialog(this,"击杀飞机数为:"+killNum+",得分:"+killNum*10, "游戏结束",JOptionPane.PLAIN_MESSAGE); } @Override public void windowDeactivated(WindowEvent e) {  // TODO Auto-generated method stub   } @Override public void windowDeiconified(WindowEvent e) {  // TODO Auto-generated method stub   } @Override public void windowIconified(WindowEvent e) {  // TODO Auto-generated method stub   } @Override public void windowOpened(WindowEvent e) {  // TODO Auto-generated method stub   }}

MyGameMember.java

package drawPanel;import java.util.Vector;/* * 实体类，由此派生出大炮以及飞机 * */class BaseClass{ //对象的坐标x,y int x=0; int y=0; //定义方向 int direct=0; //定义速度 int speed=3; public BaseClass(int x,int y){  this.x=x;  this.y=y; } /*  * get 和set方法  * */ public int getX() {  return x; } public void setX(int x) {  this.x = x; } public int getY() {  return y; } public void setY(int y) {  this.y = y; } public int getDirect() {  return direct; } public void setDirect(int direct) {  this.direct = direct; } public int getSpeed() {  return speed; } public void setSpeed(int speed) {  this.speed = speed; }}/* * 大炮类 * */class Canon extends BaseClass{ public Vector<Shot> ss=new Vector<Shot>(); public Shot s=null; public Canon(int x, int y) {  super(x, y);  // TODO Auto-generated constructor stub } public void shotPlane(){    switch(this.direct){      case 0:       s=new Shot(x+20,y-15,0);       ss.add(s);       break;      case 1:       s=new Shot(x+55, y+20,1);       ss.add(s);       break;      case 2:       s=new Shot(x+20, y+55,2);       ss.add(s);       break;      case 3:       s=new Shot(x-15, y+20,3);       ss.add(s);       break;      default:break;  }  //启动子弹线程  Thread t=new Thread(s);  t.start(); } void moveUp(){  if(y-speed>=15)   y-=speed; } void moveRight(){  if(x<=525)   x=x+speed; } void moveDown(){  if(y<=350)   y=y+speed; } void moveLeft(){  if(x-speed>=15)   x-=speed; }}/* * 飞机类 * */ class Plane extends BaseClass implements Runnable{  boolean isAlive=true;  int times=0; public Plane(int x, int y) {  super(x, y);  // TODO Auto-generated constructor stub } @Override public void run() {  // TODO Auto-generated method stub    while(true){     for(int i=0;i<30;i++){    if(x<600){    x+=speed;    }    else{     this.isAlive=false;    }    try {     Thread.sleep(50);    } catch (InterruptedException e) {     // TODO Auto-generated catch block     e.printStackTrace();    }    }   }    }} /*  * 发射子弹  * */  class Shot implements Runnable{   int x;   int y;   int direct;   int speed=5;   boolean isAlive=true;   Shot(int x,int y,int direct){    this.x=x;    this.y=y;    this.direct=direct;   } @Override public void run() {  // TODO Auto-generated method stub  while(true){   try {    Thread.sleep(60);   } catch (InterruptedException e) {    // TODO Auto-generated catch block    e.printStackTrace();   }   switch(this.direct){      case 0:       y-=speed;       break;      case 1:       x+=speed;       break;      case 2:       y+=speed;       break;      case 3:       x-=speed;       break;      default:break;  }   if(x<0||x>600||y<0||y>600){    this.isAlive=false;    break;   }  } }  }  class Bomb{   private int x,y;   private int life=9;   private boolean isLive=true;   public Bomb(int x,int y){    this.x=x;    this.y=y;   } public int getX() {  return x; } public void setX(int x) {  this.x = x; } public int getY() {  return y; } public void setY(int y) {  this.y = y; } //减少生命值 public void lifeDown() {  if(life>0)  {   life--;  }else{   this.isLive=false;  }   } public int getLife() {  return life; } public void setLife(int life) {  this.life = life; }  }

[说明]
代码中的爆炸图片需要自己找然后添加到项目！