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Java小游戏

时间:2019-01-15 21:09:01      阅读:289      评论:0      收藏:0      [点我收藏+]

标签:背景   add   shell   screen   文本绘制   lov   数组   键盘   event   

这是一个飞机躲避子弹的小游戏,其中有许多干货

这是蒟蒻我第二次做,请各位大佬多多指教

目录

1.游戏主窗口的创建

2.图形绘制_文本绘制_颜色改变_图像对象的加载

3.线程内部类实现动画

4.游戏物体根类的实现

5.面向对象思想重构飞机类设计

6.键盘控制游戏物体原理

7.面向对象重构飞机类的键盘控制代码

8.炮弹类设计_任意角度飞行

9.容器或数组产生多发炮弹

10.双缓冲解决闪烁问题_矩形检测原理

11.炮弹和飞机的碰撞检测_飞机死掉

12.爆炸类_图片数组轮播处理

13.099_主窗口画出爆炸类

14.100_飞机死亡和计时功能

 

//创建类


public class Constant {
    public static final int GAME_WIDTH = 500;
    public static final  int  GAME_HEIGHT = 500;
}

 

当飞机与子弹发生碰撞时的爆炸效果的实现

import java.awt.Graphics;
import java.awt.Image;

/*
 * 爆炸类
 */
public class Explode {
    double x, y;
    
    static Image[] imgs = new Image[16];
    static {
        for (int i = 0; i < 16; i++) {
            imgs[i] = GameUtil.getImage("images/explode/e" + (i + 1) + ".gif");
            imgs[i].getWidth(null);
        }
    }

    int count;

    public void draw(Graphics g) {
        if (count <= 15) {
            g.drawImage(imgs[count], (int) x, (int) y, null);
            count++;
        }
    }

    public Explode(double x, double y) {
        this.x = x;
        this.y = y;
    }
}

 

游戏物体

package cn.sxt.game;

import java.awt.Graphics;
import java.awt.Image;
import java.awt.Rectangle;

/**
 * 游戏物体的父类
 * @author VictorDW
 *
 */
public class GameObject {
      Image  img;
      double  x,y;
       int   speed;
      int  width, height;
    
    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 height) {
        super();
        this.img = img;
        this.x = x;
        this.y = y;
        this.speed = speed;
        this.width = width;
        this.height = height;
    }

    public GameObject(Image img, double x, double y) {
        super();
        this.img = img;
        this.x = x;
        this.y = y;
    }
    
    public GameObject() {
    }
    
    /**
     * 返回物体所在的矩形。便于后续的碰撞检测
     * @return
     */
    public  Rectangle   getRect(){
        return  new Rectangle((int)x, (int)y, width, height);
    }
    
    
}

 

 

 
import java.awt.Image;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.net.URL;
import javax.imageio.ImageIO;
 
public class GameUtil {
    // 工具类最好将构造器私有化。
    private GameUtil() {
    } 
 
    
    /**
     * 返回指定路径文件的图片对象
     * @param path
     * @return
     */
    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;
    }
}

 

飞机

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(right){
                    x += speed;
                }
                if(up){
                    y -=speed;    //y = 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 = img.getWidth(null) ;
        this.height = img.getHeight(null);
        
    }
    
    //按下某个键,增加相应的方向
    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,取消相应的方向
        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;
            }
        }
    
    
}

 

炮弹

import java.awt.Color;
import java.awt.Graphics;

/**
 * 炮弹类
 * 
 *
 */
public class Shell   extends  GameObject {
    
    double  degree;
    
    public  Shell(){
        x = 200;
        y = 200;
        width=10;
        height = 10;
        speed = 3;
        degree = Math.random()*Math.PI*2;
    }
    
    public  void   draw(Graphics  g){
        Color   c =  g.getColor();
        g.setColor(Color.YELLOW);
        
        g.fillOval((int)x,(int) y, width, height);
        
        //炮弹沿着任意角度去飞
        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-height){
            degree  = - degree;
        }
        
        
        
        
        g.setColor(c);
    }
    
}

 

主类

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 java.util.Date;

/**
 * 飞机游戏的主窗口
 * @author VictorDW
 *
 */
public class MyGameFrame  extends  Frame {
    
    Image   planeImg  = GameUtil.getImage("images/plane.png");
    Image   bg  = GameUtil.getImage("images/bg.jpg");
    
    Plane   plane = new Plane(planeImg,250,250);
    Shell[]   shells = new Shell[30];
    
    Explode   bao ;
    Date  startTime = new Date();
    Date  endTime;
    int period;   //游戏持续的时间
    
    @Override
    public void paint(Graphics g) {        //自动被调用。  g相当于一只画笔
        Color   c =  g.getColor();
        g.drawImage(bg, 0, 0, null);
        
        plane.drawSelf(g);  //画飞机
        
        //画出所有的炮弹
        for(int i=0;i<shells.length;i++){
            shells[i].draw(g);
            
            //飞机和炮弹的碰撞检测!!!
            boolean  peng = shells[i].getRect().intersects(plane.getRect());
            if(peng){
                plane.live = false;
                if(bao ==null){
                    bao  = new Explode(plane.x, plane.y);
                    
                    endTime = new Date();
                    period = (int)((endTime.getTime()-startTime.getTime())/1000);
                }
                bao.draw(g);
            }
            
            //计时功能,给出提示
            if(!plane.live){
                g.setColor(Color.red);
                Font   f  =  new Font("宋体", Font.BOLD, 50);
                g.setFont(f);
                g.drawString("时间:"+period+"秒", (int)plane.x, (int)plane.y);
            }
            
        }
        
        g.setColor(c);
    }
    
    
    //帮助我们反复的重画窗口!
    class  PaintThread  extends  Thread  {
        @Override
        public void run() {
            while(true){
                repaint();        //重画
                
                try {
                    Thread.sleep(40);       //1s=1000ms
                } 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) {
            plane.addDirection(e);
        }

        @Override
        public void keyReleased(KeyEvent e) {
            plane.minusDirection(e);
        }
        
        
    }
    
    
    /**
     * 初始化窗口
     */
    public  void  launchFrame(){
        this.setTitle("躲避byYD");
        this.setVisible(true);
        this.setSize(Constant.GAME_WIDTH    , Constant.GAME_HEIGHT);
        this.setLocation(300, 300);
        
        this.addWindowListener(new WindowAdapter() {
            @Override
            public void windowClosing(WindowEvent e) {
                System.exit(0);
            }
        });
        
        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();
    }
    
    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);
    }
    
}

 

以下是背景与模型,可以自己修改与更换

背景图

技术分享图片

 

飞机模型

技术分享图片

 

 

爆炸效果

技术分享图片技术分享图片技术分享图片技术分享图片技术分享图片技术分享图片技术分享图片技术分享图片技术分享图片技术分享图片技术分享图片技术分享图片技术分享图片技术分享图片技术分享图片技术分享图片

Java小游戏

标签:背景   add   shell   screen   文本绘制   lov   数组   键盘   event   

原文地址:https://www.cnblogs.com/DWVictor/p/10274170.html

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