Java如何实现飞机小游戏

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1，Constant；专门放常量

package com.game2;//专门放常量的一个类public class Constant {    public static final int GAME_WIDTH=500;//窗口的宽度    public static final int GAME_HEIDHT=500;//窗口的高度    public static final int GAME_X=300;    public static final int GAME_Y=300;}

2，GameObject；工具父类

package com.game2;//写工具父类import java.awt.*;public class GameObject {    //声明6个变量    Image img;    double x,y;    int speed;    int width,height;    //重写构造方法    public void drawSelf(Graphics g){        g.drawImage(img,(int)x,(int)y,null);    }    //6个变量的构造方法    public GameObject(Image img, double x, double y, int speed, int width, int height) {        super();        this.img = img;        this.x = x;        this.y = y;        this.speed = speed;        this.width = width;        this.height = height;    }    //重写构造方法    public GameObject(Image img, double x, double y) {        super();        this.img = img;        this.x = x;        this.y = y;    }    //写空的方法    public GameObject(){    }        public Rectangle getRect(){        return new Rectangle((int)x,(int)y,width,height);    }}

3，GameUtil；工具类

package com.game2;//工具类import javax.imageio.ImageIO;import java.awt.*;import java.awt.image.BufferedImage;import java.io.IOException;import java.net.URL;public class GameUtil {    //工具类私有化    private GameUtil(){    }    public  static Image getImage(String path){        BufferedImage bi = null;        try{            URL u = GameUtil.class.getClassLoader().getResource(path);            bi = ImageIO.read(u);        }catch(IOException e){            e.printStackTrace();        }        return bi;    }}

4，Explode；爆炸

package com.game2;//爆炸类import java.awt.*;public class Explode {    //爆炸位置    double x,y;    public Explode(double x,double y){        this.x = x;        this.y = y;    }    //设置对象数组    static Image[] imgs =new Image[12];    static {        //图片循环        for(int i= 0;i<12;i++){            imgs[i] = GameUtil.getImage("com/game2/images/a"+(i+1)+".png");            imgs[i].getWidth(null);        }    }    //图片计数轮播    int count;    public void draw(Graphics g){        if(count <= 11){            g.drawImage(imgs[count],(int)x,(int)y,null );            count++;        }    }}

5，Plane；飞机类

package com.game2;//飞机类import java.awt.*;import java.awt.event.KeyEvent;public class Plane extends GameObject {    //增加方向    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(right) {                x +=speed;            }            if(up){                y -=speed;            }            if(down){                y +=speed;            }        }else{        }    }    public Plane(Image img, double x, double y){        this.img = img;        this.x = x;        this.y = y;        this.speed =5;        this.width =30;        this.height =40;    }    //按下键盘的某个键，增加相应的方向    public void addDirection(KeyEvent e){        switch (e.getKeyCode()){            case KeyEvent.VK_UP:                up = true;                break;            case KeyEvent.VK_DOWN:                down = true;                break;            case KeyEvent.VK_LEFT:                left = true;                break;            case KeyEvent.VK_RIGHT:                right = true;                break;        }    }    //按下键盘的某个键，取消相应的方向    public void minusDirection(KeyEvent e){        switch (e.getKeyCode()){            case KeyEvent.VK_UP:                up = false;                break;            case KeyEvent.VK_DOWN:                down = false;                break;            case KeyEvent.VK_LEFT:                left = false;                break;            case KeyEvent.VK_RIGHT:                right = false;                break;        }    }}

6，Shell；炮弹类

package com.game2;//炮弹类import java.awt.*;public class Shell extends GameObject {    double degree;    public Shell(){        x=200;        y=200;        width = 5;        height = 5;        speed = 2;        degree = Math.random()*Math.PI *2;    }    public void draw(Graphics g){        Color c = g.getColor();        g.setColor(Color.green);        g.fillOval((int)x,(int)y,width,height);        //炮弹沿着任意角度飞        x+= speed*Math.cos(degree);        y+= speed*Math.sin(degree);        //让炮弹在窗口内反弹        if(x<5||x>Constant.GAME_WIDTH-width-5){            degree = Math.PI-degree;        }        if(y<30||y>Constant.GAME_HEIDHT-height-5){            degree= -degree;        }        g.setColor(c);    }}

7，image；图片包

8，images；爆炸图片包

9，Plan；主类

package com.game2;//运行类import java.awt.*;import java.awt.event.KeyAdapter;import java.awt.event.KeyEvent;import java.awt.event.WindowAdapter;import java.awt.event.WindowEvent;import java.util.Date;public class Plan extends Frame {    //图片路径    static Image FeiJ = GameUtil.getImage("com\\game2\\image\\11.png");    static Image BeiJ = GameUtil.getImage("com\\game2\\image\\Xk.jpg");    static Image PaoD = GameUtil.getImage("com\\game2\\image\\00.png");    //定义飞机位置    Plane pl = new Plane(FeiJ,250,250);//飞机对象初始化    Shell[] shells = new Shell[50];//多个炮弹数组    Explode bao;//    Date startTime = new Date();//开始时间    Date endTime;//结束时间    int period;//游戏持续的时间    //窗口内绘制，自动调用    @Override    public void paint(Graphics g) {        Color c= g.getColor();//保存原字体颜色        g.drawImage(BeiJ,0,0,null);        pl.drawSelf(g);//画飞机        //画出所有炮弹for循环        for(int i= 0;i<shells.length;i++) {            shells[i].draw(g);            //判断炮弹是否碰撞            boolean peng =shells[i].getRect().intersects(pl.getRect());            if (peng){                pl .live = false;//如果碰撞飞机死亡                if(bao==null){                    bao = new Explode(pl.x, pl.y);                    //计算结束时间                    endTime  =new Date();                    period= (int)((endTime.getTime()-startTime.getTime())/1000);                }                bao.draw(g);//画出爆炸            }            //游戏时间计算            //如果飞机死亡            if(!pl.live){                //改颜色                g.setColor(Color.CYAN);                //改字体                Font f = new Font("楷体",Font.BOLD,50);                g.setFont(f);                //时间计算                g.drawString("时间："+period+"秒",(int)pl.x,(int)pl.y);            }        }        g.setColor(c);//改回原来字体颜色    }    //多线程    class PaintThread extends Thread{        @Override        public void run() {            //反复画窗口            while(true){                repaint();                //时间间隔                try {                    Thread.sleep(40);                } catch (InterruptedException e) {                    e.printStackTrace();                }            }        }    }    //定义键盘监听内部类    class KeyMonitor extends KeyAdapter{        @Override        public void keyPressed(KeyEvent e) {            pl.addDirection(e);        }//按下        @Override        public void keyReleased(KeyEvent e) {            pl.minusDirection(e);        }//释放    }    //加入双缓冲，使窗口页面不闪烁    private Image offScreenImage = null;    public void update(Graphics g){        if(offScreenImage == null)            offScreenImage = this.createImage(Constant.GAME_WIDTH,Constant.GAME_HEIDHT);//游戏宽度高度        Graphics gOff = offScreenImage.getGraphics();        paint(gOff);        g.drawImage(offScreenImage,0,0,null);    }        public void launchFrame(){        this.setTitle("飞机大战");//窗口标题        this.setVisible(true);//窗口显示可见        this.setSize(Constant.GAME_WIDTH,Constant.GAME_HEIDHT);//设置窗口大小        this.setLocation(Constant.GAME_X,Constant.GAME_Y);//设置窗口左上点在电脑屏幕上的位置        this.addWindowListener(new WindowAdapter() {            @Override            public void windowClosing(WindowEvent e) {                System.exit(0);            }        });//关闭窗口进程        new PaintThread().start();//启动重画窗口的线程        addKeyListener(new KeyMonitor());//给窗口增加键盘的监听        //初始化生成50个炮弹        for(int i=0;i<shells.length;i++){            shells[i]= new Shell();        }    }    public static void main(String [] args){        Plan p = new Plan();        p.launchFrame();    }}

运行即可

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