Posted on 2006-11-01 17:04
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好幾天沒有好好學習了!~~今兒個要崛起了...
實驗三???? 警察抓小偷
?(一)、實驗目的要求
??? 要求學生熟悉多線程編程，并能使用多線程實現程序，進一步了解和使用awt圖形界面。充分的理解多線程的思想。
?(二)、實驗設備
?(三)、實驗步驟與內容
? 定義小偷和警察類，可以用不同的圖形來標示警察和小偷，初始化小偷和警察的位置。利用多線程同時調整警察和小偷的坐標，并根據坐標的變化在畫面上顯示小偷和警察移動路線，當他們之間的距離小于一定的值時，程序終止。
?? 利用多線程模擬警察抓小偷的游戲。使用AWT圖形界面模仿警察抓小偷的過程。在圖形界面上畫出小偷逃跑的路線。警察按小偷逃跑的方向調整追擊路線。
代碼如下:
??1
/**?*//**
??2
*title?警察抓小偷（多線程小測試）
??3*@author?realsmy
??4*date?2006-11-1?16:56
??5
*/
??6
??7import?java.awt.*;
??8import?javax.swing.*;
??9import?java.util.*;
?10
?11//創建警察類
?12class?Police?implements?Runnable
{
?13????private?int?px,py;
?14????public?static?int?zhua?=?0;
?15????Test?t;
?16
????Police(Test?t){
?17????????this.t?=?t;
?18????????px?=?30;
?19????????py?=?30;
?20
????}
?21????public?void?run(){
?22????????while(true){
?23????????????//synchronized(t){
?24????????????????if(zhua?==?0){
?25????????????????????px++;
?26????????????????????py++;
?27????????????????}
?28????????????????else{
?29????????????????????if(px?<?t.thief.getTx()){
?30????????????????????????px++;
?31????????????????????}
?32????????????????????if(py?<?t.thief.getTy()){
?33????????????????????????py++;
?34????????????????????}
?35????????????????}
?36????????????????try{
?37????????????????????Thread.sleep(50);
?38????????????????}catch(InterruptedException?e){}
?39????????????//}
?40????????????t.repaint();
?41????????}
?42????}
?43????public?int?getPx(){
?44????????return?px;
?45????}
?46????public?int?getPy(){
?47????????return?py;
?48????}
?49}
?50
?51//創建小偷類
?52class?Thief?implements?Runnable{
?53????private?int?tx,ty;
?54????public?static?int?tao?=?0;
?55????Test?t;
?56????Thief(Test?t){
?57????????this.t?=?t;
?58????????tx?=?300;
?59????????ty?=?300;
?60????}
?61????public?void?run(){
?62????????while(true){
?63????????????//synchronized(t){
?64????????????????if(tao?==?0){
?65????????????????????tx--;
?66????????????????????ty--;
?67????????????????}
?68????????????????else{
?69????????????????????tx++;
?70????????????????}
?71????????????????try{
?72????????????????????Thread.sleep(100);
?73????????????????}catch(InterruptedException?e){}
?74????????????//}
?75????????????t.repaint();
?76????????}
?77????}
?78????public?int?getTx(){
?79????????return?tx;
?80????}
?81????public?int?getTy(){
?82????????return?ty;
?83????}
?84}
?85
?86//測試類
?87public?class?Test?extends?JFrame{
?88????private?Container?c;
?89????public?Police?police;
?90????public?Thief?thief;
?91????Thread?p,t;
?92????int?a?=0;
?93????private?Vector?vt;
?94????Test(){
?95????????super("老鷹抓小雞");
?96????????c?=?getContentPane();
?97????????
?98????????vt?=?new?Vector();??//用來存儲小偷逃跑坐標
?99????????police??=?new?Police(this);
100????????thief?=?new?Thief(this);
101????????p?=?new?Thread(police);
102????????t?=?new??Thread(thief);
103????????p.start();
104????????t.start();
105
106????????setSize(400,400);
107????????setLocation(200,200);
108????????setVisible(true);
109????}
110
111????public?void?paint(Graphics?g){
112????????g.setColor(new?Color(255,?255,?255));
113????????g.fillRect(0,?0,?400,?400);
114????????draw_police();
115????????draw_thief();
116????????draw_guiji();
117????????if(Math.hypot(police.getPx()-thief.getTx(),?police.getPy()-thief.getTy())?<?80){
118????????????police.zhua?=?1;
119????????????thief.tao?=?1;
120????????}
121????????if(police.getPx()?==?thief.getTx()?&&?police.getPy()?==?thief.getTy()){
122????????????p.stop();
123????????????t.stop();
124????????????try{
125????????????????JOptionPane.showMessageDialog(null,"警察：小樣，被我逮到了吧！~哈哈哈哈~");
126????????????}catch(HeadlessException?e){}
127????????????System.exit(0);
128????????}
129????????try{
130????????????Thread.sleep(200);
131????????}catch(InterruptedException?e){}
132????}
133????//畫警察的方法
134????public?void?draw_police(){
135????????Graphics?g?=?getGraphics();
136????????g.setColor(Color.green);
137????????g.drawRect(police.getPx(),police.getPy(),50,50);
138????????g.drawString("警察",police.getPx()+15,police.getPy()+30);
139????}
140????//畫小偷的方法
141????public?void?draw_thief(){
142????????Graphics?g?=?getGraphics();
143????????g.setColor(Color.red);
144????????g.drawRect(thief.getTx(),thief.getTy(),50,50);
145????????g.drawString("小偷",thief.getTx()+15,thief.getTy()+30);
146????????vt.add(thief.getTx()?+?25);
147????????vt.add(thief.getTy()?+?25);
148????}
149????//畫小偷軌跡的方法
150????public?void?draw_guiji(){
151????????Graphics?g?=?getGraphics();
152????????Enumeration?en?=?vt.elements();
153?????????while(en.hasMoreElements()){
154?????????????g.setColor(Color.black);
155????????????g.fillOval((Integer)en.nextElement(),?(Integer)en.nextElement(),?2,?2);
156?????????}
157????}
158????public?static?void?main(String[]?args){
159????????Test?p?=?new?Test();
160????????p.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
161????}
162}
163 歡迎來訪！^.^!
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