TankWar 单机（JAVA版）版本1.0~版本1.4 坦克方向打出多发子弹并解决子弹不消亡问题

本文主要是介绍TankWar 单机（JAVA版）版本1.0~版本1.4 坦克方向打出多发子弹并解决子弹不消亡问题，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

首先新建一个子弹类

由于要画子弹，所以变量肯定要有坐标x,y,宽高width,height.方法要有draw方法用来绘制子弹

而子弹移动还有子弹的方向dir.子弹的移动速度speed。

要判断子弹是否消亡所以还要布尔变量bLive表示当前子弹的存亡状态

所有变量的Get set方法一定要有哦。

只有这些你会发现子弹是不会动的只会停留在原地要怎么才能让子弹动呢？

就是线程，每当我们实例化一个子弹我们就为其开启一个线程，来实现当前子弹的移动

至于子弹的消亡可以根据其坐标是否出了界面边界来判断

而子弹的自动移动就得到了，和tank的移动相似

// 子弹的自动移动@Overridepublic void run() {// TODO Auto-generated method stubwhile (bLive) {if (dir == Direction.D) {y += speed;}if (dir == Direction.U) {y -= speed;}if (dir == Direction.L) {x -= speed;}if (dir == Direction.R) {x += speed;}if (dir == Direction.LU) {y -= Math.sqrt(2) * speed / 2;x -= Math.sqrt(2) * speed / 2;}if (dir == Direction.LD) {y += Math.sqrt(2) * speed / 2;x -= Math.sqrt(2) * speed / 2;}if (dir == Direction.RU) {y -= Math.sqrt(2) * speed / 2;x += Math.sqrt(2) * speed / 2;}if (dir == Direction.RD) {y += Math.sqrt(2) * speed / 2;x += Math.sqrt(2) * speed / 2;}try {Thread.sleep(100);} catch (InterruptedException e) {// TODO Auto-generated catch blocke.printStackTrace();}//如果当前子弹移动出界面边界  使此子弹消亡if(x>TankClient.SCREENWIDTH||x<0||y<0||y>TankClient.SCREENHEIGHT){bLive=false;}}}

Missile类全部代码：

package tankWar;import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.geom.Ellipse2D;public class Missile implements Runnable {// 子弹的x坐标private int x;// 子弹的y坐标private int y;// 子弹的宽度private int width = 10;// 子弹的高度private int height = 10;// 子弹移动的速度private int speed = 10;// 子弹发射的方向private Direction dir;// 子弹是否消亡 默认存活private boolean bLive=true;public Missile() {super();// TODO Auto-generated constructor stub}public Missile(int x, int y, Direction dir) {super();this.x = x;this.y = y;this.dir = dir;// 每实例化一个子弹 就为其开启一个线程Thread t = new Thread(this);t.start();}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 getWidth() {return width;}public void setWidth(int width) {this.width = width;}public int getHeight() {return height;}public void setHeight(int height) {this.height = height;}public Direction getDir() {return dir;}public void setDir(Direction dir) {this.dir = dir;}public int getSpeed() {return speed;}public void setSpeed(int speed) {this.speed = speed;}public boolean isbLive() {return bLive;}public void setbLive(boolean bLive) {this.bLive = bLive;}// 子弹的绘制public void draw(Graphics g) {Graphics2D g2 = (Graphics2D) g;Ellipse2D e2 = new Ellipse2D.Double(x, y, width, height);g2.setColor(Color.RED);g2.fill(e2);}// 子弹的自动移动@Overridepublic void run() {// TODO Auto-generated method stubwhile (bLive) {if (dir == Direction.D) {y += speed;}if (dir == Direction.U) {y -= speed;}if (dir == Direction.L) {x -= speed;}if (dir == Direction.R) {x += speed;}if (dir == Direction.LU) {y -= Math.sqrt(2) * speed / 2;x -= Math.sqrt(2) * speed / 2;}if (dir == Direction.LD) {y += Math.sqrt(2) * speed / 2;x -= Math.sqrt(2) * speed / 2;}if (dir == Direction.RU) {y -= Math.sqrt(2) * speed / 2;x += Math.sqrt(2) * speed / 2;}if (dir == Direction.RD) {y += Math.sqrt(2) * speed / 2;x += Math.sqrt(2) * speed / 2;}try {Thread.sleep(100);} catch (InterruptedException e) {// TODO Auto-generated catch blocke.printStackTrace();}//如果当前子弹移动出界面边界  使此子弹消亡if(x>TankClient.SCREENWIDTH||x<0||y<0||y>TankClient.SCREENHEIGHT){bLive=false;}}}
}

做完这些还没完。

我们还没有在按键事件中判断是否发子弹

在Tank类的键盘事件中加入：按F键开火事件