Java飞机躲避炮弹碰撞小游戏

如果你是入门Java，那么这个飞机躲避炮弹碰撞小游戏将会是和不错的入门项目选择，可以让你在学习基础的情况下感受到代码带给你的乐趣。总代码附在文章底下百度网盘中。

ps:如报错，需根据自己的飞机图片和背景路径位置自行调整！！！

首先我们来看一下效果图：

这是我们程序的思维导图：

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我将程序各功能的函数进行了封装，下面的代码为各封装类的代码：

1、MyGameFrame游戏的主函数包（绘制图像、双缓冲技术）

 package cn.ws.game;  import java.awt.Color; import java.awt.Font; import java.awt.Frame; import java.awt.Graphics; import java.awt.Image; import java.awt.event.KeyAdapter; import java.awt.event.KeyEvent; import java.awt.event.WindowAdapter; import java.awt.event.WindowEvent;  import javax.swing.JFrame;  public class MyGameFrame extends Frame {    Image bg=GameUtil.getImage("images/bg.jpg");  //引入改图片  Image planeImg=GameUtil.getImage("images/plane.png");    Plane plane = new Plane(planeImg,250,250);  Shell[] shells = new Shell[50];  //创建50个炮弹数组      @Override  public void paint(Graphics g) {                 //相当于画笔工具，g就是画笔      super.paint(g);                             //必须加的      g.drawImage(bg,0, 0, null);        //加载图片   plane.drawSelf(g);   //画飞机      //画出所有炮弹   for(int i=0;i<shells.length;i++) {    shells[i].draw(g);        //是否飞机矩形框与小球矩形框相撞(碰撞检测)    boolean peng = shells[i].getRect().intersects(plane.getRect());      if(peng) {     plane.live = false;    }       }     }    //窗口重画  class PaintThread extends Thread{   public void run() {   while(true) {    repaint();  //重画窗口        try {    Thread.sleep(40);   }catch(InterruptedException e) {    e.printStackTrace();   }  }   }   }      //定义键盘监听的内部类  class KeyMonitor extends KeyAdapter{    @Override   public void keyPressed(KeyEvent e) {       //按下    plane.addDirection(e);   }    @Override   public void keyReleased(KeyEvent e) {     //抬起    plane.minusDirection(e);   }     }    //初始化窗口  public void launchFrame() {                 //主窗口启动   this.setTitle("王烁制作的小灰机");           //主窗口标题   this.setVisible(true);                 //主窗口可见   this.setSize(Constant.GAME_WIDTH, Constant.GAME_HEIGHT);                //主窗口尺寸   this.setLocation(400,100);             //主窗口位置      this.addWindowListener(new WindowAdapter() {         //主窗口关闭结束    public void windowClosing(WindowEvent e) {     System.exit(0);    }   });   new PaintThread().start();   //启动重画窗口   addKeyListener(new KeyMonitor());  //增加键盘监听         //初始化50个炮弹   for(int i=0;i<shells.length;i++) {    shells[i] = new Shell();   }     }        public static void main(String[] args) {   MyGameFrame f=new MyGameFrame();   f.launchFrame();  }      //双缓冲，屏幕不闪烁  private Image offScreenImage = null;     public void update(Graphics g) {      if(offScreenImage == null)          offScreenImage = this.createImage(Constant.GAME_WIDTH,Constant.GAME_HEIGHT);//这是游戏窗口的宽度和高度             Graphics gOff = offScreenImage.getGraphics();      paint(gOff);      g.drawImage(offScreenImage, 0, 0, null);  }    } 

2、Constant设定窗口的大小包

 package cn.ws.game;  public class Constant {  public static final int GAME_WIDTH = 500;  public static final int GAME_HEIGHT = 500; } 

3、GameObject初始化飞机大小以及返回所在矩形包（便于后续封装检测）

 package cn.ws.game;  import java.awt.Graphics; import java.awt.Image; import java.awt.Rectangle;  public class GameObject {  Image img;  double x,y;  int speed=3;  int width;  int heigth;    public void drawSelf(Graphics g) {   g.drawImage(img,(int)x,(int)y,null);  }   public GameObject(Image img, double x, double y, int speed, int width, int heigth) {   super();   this.img = img;   this.x = x;   this.y = y;   this.speed = speed;   this.width = width;   this.heigth = heigth;  }   public GameObject(Image img, double x, double y) {   super();   this.img = img;   this.x = x;   this.y = y;  }    //返回物体所在矩形。便于后续碰撞   public Rectangle getRect() {   return new Rectangle((int)x,(int)y,width,heigth);  }    public GameObject() {     }     } 

4、GameUtil图片读取之BufferedImage得到像素矩阵包

 package cn.ws.game;  import java.awt.Image; import java.awt.image.BufferedImage; import java.io.IOException;  import javax.imageio.ImageIO; import javax.print.DocFlavor.URL;  public class GameUtil {    private GameUtil() {     }    public static Image getImage(String path) {   BufferedImage bi= null;   try {    java.net.URL u = GameUtil.class.getClassLoader().getResource(path);    bi = ImageIO.read(u);   }catch(IOException e) {    e.printStackTrace();   }   return bi;  }  } 

5、Plane初始化飞机和飞机控制和飞机矩形大小设定包

 package cn.ws.game;  import java.awt.Graphics; import java.awt.Image; import java.awt.event.KeyEvent;  public class Plane extends GameObject{    boolean left,up,right,down;    boolean live = true;    public void drawSelf(Graphics g) {   if(live) {    g.drawImage(img,(int)x,(int)y,null);        if(left) {     x-=speed;    }    if(up) {     y-=speed;    }    if(right) {     x+=speed;    }    if(down) {     y+=speed;    }   }  }    public Plane(Image img,double x,double y) {   this.img=img;   this.x=x;   this.y=y;   this.speed=3;   this.width=3;   //img.getWidth(null)  获得图片宽度   this.heigth=3;  }    //按下某个键，增加相应方向  public void addDirection(KeyEvent e) {   switch (e.getKeyCode()) {   case KeyEvent.VK_LEFT:    left=true;    break;   case KeyEvent.VK_UP:    up=true;    break;   case KeyEvent.VK_RIGHT:    right=true;    break;   case KeyEvent.VK_DOWN:    down=true;    break;    }  }    //按下某个键，减相应方向  public void minusDirection(KeyEvent e) {   switch (e.getKeyCode()) {   case KeyEvent.VK_LEFT:    left=false;    break;   case KeyEvent.VK_UP:    up=false;    break;   case KeyEvent.VK_RIGHT:    right=false;    break;   case KeyEvent.VK_DOWN:    down=false;    break;    }  } } 

6、Shell初始化子弹和子弹反弹包

 package cn.ws.game;  import java.awt.Color; import java.awt.Graphics;  /**  * 炮弹类  * @author 王烁  *  */ public class Shell extends GameObject {  double degree;    public Shell() {   x=200;   y=200;   width=10;   heigth=10;   speed=2;      degree=Math.random()*Math.PI*2;   //degree弧度，随机生产（0-2PI）  }    public void draw(Graphics g) {   Color c= g.getColor();    //先保存现在的颜色   g.setColor(Color.green);      g.fillOval((int)x, (int)y, width, heigth);      //炮弹沿着任意角度飞   x+=speed*Math.cos(degree);   y+=speed*Math.sin(degree);         if(x<0||x>Constant.GAME_WIDTH-width) {    degree = Math.PI-degree;   }      if(y<30||y>Constant.GAME_HEIGHT-heigth) {    degree = -degree;   }      g.setColor(c);            //用完再换回去  }   } 

百度网盘提取源码和所用到的图片：https://pan.baidu.com/s/1V_Wa79P1-c0mZiDCP6X3kA

提取码：1qhm

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