Java的一个飞机游戏项目的编程记录

Java的一个飞机游戏项目的编程记录

第一步：绘制图形窗口
创建MyGameFrame类
1）建立游戏框架

import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.JFrame;public class MyGameFrame extends JFrame{/*** 初始化窗口*/public void launchFrame() {this.setTitle("飞机大战—程序猿阿康作品");this.setVisible(true);this.setSize(Constant.GAME_WIDTH, Constant.GAME_HEIGHT);this.setLocation(300, 300);this.addWindowListener(new WindowAdapter() {@Overridepublic void windowClosing(WindowEvent e) {it(0);}});}public static void main(String[] args) {MyGameFrame gf=new MyGameFrame();gf.launchFrame();}}

2）创建了Constant类

public class Constant {static final int GAME_WIDTH=480;static final int GAME_HEIGHT=500;}

二、重写paint方法

1）重写paint

  //重写paint方法，绘制图形@Overridepublic void paint(Graphics g) {}	

2)加载图片类GameUtil

/*** 加载指定路径下的图片对象*/import java.awt.Image;import java.awt.image.BufferedImage;import java.io.IOException;import java.URL;import javax.imageio.ImageIO;public class GameUtil {private  GameUtil(){}public static Image getImage(String path) {BufferedImage bi=null;try {URL u=ClassLoader().getResource(path);bi&#ad(u);} catch (IOException e) {e.printStackTrace();}return bi;}}

3)创建GameObject父类

import java.awt.Graphics;
import java.awt.Image;
import java.awt.Rectangle;public class GameObject {double x,y;int width,height;Image img;public void drawSelf(Graphics g) {g.drawImage(img, (int)x, (int)y, null);}public GameObject(double x, double y, int width, int height, Image img) {super();this.x = x;this.y = y;this.width = width;this.height = height;this.img = img;}public GameObject(double x, double y, Image img) {super();this.x = x;this.y = y;this.img = img;}public GameObject() {}//矩阵检测，用于后续物体碰撞检测public  Rectangle getRect() {return new Rectangle ((int)x,(int)y,width,height);}

}

4）加载飞机与背景图片

 Image planeImg&#Image("images/life.png");Image bg&#Image("images/background.png");Plane plane=new Plane(planeImg,250,250);//重写paint方法，绘制图形@Overridepublic void paint(Graphics g) {g.drawImage(bg, 0, 0, null);plane.drawSelf(g); }	

三、重画图形线程paintThread
1)增加重画窗口线程

        class paintThread extends Thread{@Overridepublic void run() {while(true) {repaint();try {Thread.sleep(40);} catch (InterruptedException e) {e.printStackTrace();}}}}

2）启动重画窗口线程

   new paintThread().start();

3）帮助飞机移动

	 public void drawSelf(Graphics g) {g.drawImage(img,(int)x,(int)y,null);x++;}

四、增加键盘监听及键盘控制原理
1)添加键盘监听

 class  keyMonitor extends KeyAdapter{@Overridepublic void keyPressed(KeyEvent e) {}@Overridepublic void keyReleased(KeyEvent e) {}}

2）添加飞机的键盘响应

 public class Plane extends GameObject{int speed=3;boolean left,right,up,down;public Plane (Image img,double x,double y) {this.img=img;this.x=x;this.y=y;}//键盘响应public void drawSelf(Graphics g) {g.drawImage(img,(int)x,(int)y,null);if(left) {x -=speed;}if(right) {x +=speed;}if(up) {y -=speed;}if(down) {y +=speed;}}public void addDirection(KeyEvent e) {KeyCode()) {case KeyEvent.VK_LEFT:left=true;break;case KeyEvent.VK_RIGHT:right=true;break;case KeyEvent.VK_UP:up=true;break;case KeyEvent.VK_DOWN:down=true;break;}}public void minusDirection(KeyEvent e) {KeyCode()) {case KeyEvent.VK_LEFT:left=false;break;case KeyEvent.VK_RIGHT:right=false;break;case KeyEvent.VK_UP:up=false;break;case KeyEvent.VK_DOWN:down=false;break;}}

}
3）初始化键盘监听线程

    new paintThread().start();addKeyListener(new keyMonitor());

五、炮弹类Shell
1)创建炮弹类

import java.awt.Color;
import java.awt.Graphics;public class Shell extends GameObject{int speed;double degree;Shell(){x=200;y=200;speed=4;width=10;height=10;degree=Math.random()*Math.PI*2;}@Override
public void drawSelf(Graphics g) {Color c&#Color();g.setColor(Color.YELLOW);g.fillOval((int)x, (int)y, width, height);//炮弹沿任意角度飞行x +=s(degree);y +=speed*Math.sin(degree);//边沿检测if(x<width||x>Constant.GAME_WIDTH-width) {degree=Math.PI-degree;}if(y<35||y>Constant.GAME_HEIGHT-height) {degree=-degree;}g.setColor(c);} }

2）创建炮弹对象、初始化炮弹数组并绘制炮弹

       Shell[] shells=new Shell[20];   //初始化for(int i=0;i<shells.length;i++) {shells[i]=new Shell();}//绘制炮弹for(int i=0;i<shells.length;i++) {shells[i].drawSelf(g);}

六、飞机与炮弹的碰撞检测
1）碰撞检测

        boolean peng=shells[i].getRect().Rect());//获取飞机的形状尺寸public Plane (Image img,double x,double y) {this.img=img;this.x=x;this.y=y;this.width&#Width(null);this.height&#Height(null);}

2）飞机死亡

	  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;}}}//发生碰撞。则飞机坠毁if(peng) {plane.live=false;}

七、添加爆炸效果
1）创建爆炸类

import java.awt.Graphics;
import java.awt.Image;public class Explode {double x,y;static Image[] imgs=new Image[16];static {for(int i=0;i<imgs.length;i++) {imgs[i]&#Image("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;}}

2）创建爆炸类对象

  Explode bao;//绘制爆炸效果      if(peng) {plane.live=false;if(bao==null) {bao=new Explode(plane.x,plane.y);}bao.draw(g);}

八、添加计时功能
1）创建时间类对象

 Date startTime=new Date();Date endTime;int period;

2）实例化对象

 endTime=new Date();period=(int)((Time()-Time())/1000);

3）时间显示

		  if(!plane.live) {Color c&#Color();g.setColor(Color.RED);Font f=new Font("宋体",Font.BOLD,35);g.setFont(f);g.drawString("时间："+period+"秒",(int)plane.x,(int)plane.y);g.setColor(c);}

九、主程序代码

import java.awt.Color;
import java.awt.Font;
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;import javax.swing.JFrame;public class MyGameFrame extends JFrame{Image planeImg&#Image("images/life.png");Image bg&#Image("images/background.png");Plane plane=new Plane(planeImg,250,250);Shell[] shells=new Shell[10];Explode bao;Date startTime=new Date();Date endTime;int period;//重写paint方法，绘制图形@Overridepublic void paint(Graphics g) {g.drawImage(bg, 0, 0, null);plane.drawSelf(g);for(int i=0;i<shells.length;i++) {shells[i].drawSelf(g);boolean peng=shells[i].getRect().Rect());if(peng) {plane.live=false;if(bao==null) {bao=new Explode(plane.x,plane.y);endTime=new Date();period=(int)((Time()-Time())/1000);}bao.draw(g);}if(!plane.live) {Color c&#Color();g.setColor(Color.RED);Font f=new Font("宋体",Font.BOLD,35);g.setFont(f);g.drawString("时间："+period+"秒",(int)plane.x,(int)plane.y);g.setColor(c);}}}	class paintThread extends Thread{@Overridepublic void run() {while(true) {repaint();try {Thread.sleep(40);} catch (InterruptedException e) {e.printStackTrace();}}}}class  keyMonitor extends KeyAdapter{@Overridepublic void keyPressed(KeyEvent e) {plane.addDirection(e);}@Overridepublic void keyReleased(KeyEvent e) {plane.minusDirection(e);}}/*** 初始化窗口*/public void launchFrame() {this.setTitle("飞机大战—程序猿阿康作品");this.setVisible(true);this.setSize(Constant.GAME_WIDTH, Constant.GAME_HEIGHT);this.setLocation(300, 300);this.addWindowListener(new WindowAdapter() {@Overridepublic void windowClosing(WindowEvent e) {it(0);}});new paintThread().start();addKeyListener(new keyMonitor());for(int i=0;i<shells.length;i++) {shells[i]=new Shell();}}public static void main(String[] args) {MyGameFrame gf=new MyGameFrame();gf.launchFrame();}}

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