完全自己写的小程序，主要难点在控制蛇身的运动上，已经较好的解决，不完善的地方是没有进行画面双缓冲，但刷新频率较低，所以闪烁现象较不明显。
界面如下：
import java.awt.*; import java.awt.event.*; import java.util.List; import java.util.ArrayList; public class SnakeClient extends Frame { /** * 贪吃蛇主客户端 * 蛇头可动，鸡蛋随机出现 * 0.4蛇身跟随着运动 */ private static final long serialVersionUID = 1L; private static int WIDTH=406,HEIGHT=428; List<Snake> snakes=new ArrayList<Snake>(); List<Egg> eggs=new ArrayList<Egg>(); Snake s=new Snake(3,25,true,0,this); Snake body1=new Snake(3,45,false,1,this); Snake body2=new Snake(3,65,false,2,this); boolean eat=false; Egg e=new Egg(); public static void main(String []args){ SnakeClient sc=new SnakeClient(); sc.launchFrame(); } void launchFrame(){ this.setBounds(100, 100, WIDTH, HEIGHT); this.setVisible(true); this.setResizable(false); this.addWindowListener(new WinCloseMonitor()); // bug2 :忘记加入监听，导致方向不能控制 this.addKeyListener(new KeyMonitor()); new Thread(new MyThread()).start(); snakes.add(s); eggs.add(e); } class WinCloseMonitor extends WindowAdapter{ // bug1 错把windowClosing 写成WindowClosing // 以后重写函数时注意复制或利用Eclipse的重写功能 public void windowClosing(WindowEvent e){ System.exit(0); } } public void paint(Graphics g){ for(int i=0;i<snakes.size();i++){ Snake sn=snakes.get(i); if(s.hitSnake(sn)&&!sn.head){ snakes.removeAll(snakes); return; } sn.draw(g); if(sn.eatEgg(e)) eat=true; } if(eat){ snakes.add(new Snake(snakes.get(snakes.size()-1).oldX,snakes.get(snakes.size()-1).oldY, false,snakes.size(),this)); eat=false; eggs.remove(e); e=new Egg(); eggs.add(e); } e.draw(g); } class MyThread implements Runnable{ @Override public void run() { while(true){ repaint(); try { Thread.sleep(350); } catch (InterruptedException e) { e.printStackTrace(); } } } } class KeyMonitor extends KeyAdapter{ @Override public void keyPressed(KeyEvent e) { s.keyPressed(e); } } } |
