1. 自己参考书上仿照着写的双人赛车游戏,刷新频率实在是太低了,屏幕闪烁的晃眼,求助怎么解决重绘游戏屏幕是闪烁的问题?
   
2. package S1P9;
   
3. //导入所需要的软件包
   
4. import javax.swing.*;
   
5. import javax.swing.event.*;
   
6. import java.awt.*;
   
7. import java.awt.event.*;
   
8. //创建的类S1P9继承于JFrame
   
9. public class S1P9 extends JFrame {
   
10. /**
    
11.   * @param args
    
12.   */
    
13. //通过调用构造方法运行该程序
    
14. public static void main(String[] args) {
    
15.   // TODO Auto-generated method stub
    
16.   new S1P9();
    
17. }
    
18. //设置游戏屏幕大小
    
19. final int WIDTH = 900, HEIGHT = 650;
    
20. 
    
21. 
    
22. 
    
23. double p1Speed=.5,p2Speed=.5;
    
24. Rectangle p1=new Rectangle(WIDTH/9,HEIGHT/2,WIDTH/30,WIDTH/30);
    
25. //下面的矩形代表第二辆赛车
    
26. Rectangle p2=new Rectangle(((WIDTH/9)+(int)(((WIDTH/9)*1.5)/2)),(HEIGHT/2)+(HEIGHT/10),WIDTH/30,WIDTH/30);
    
27. 
    
28. 
    
29. /*下面是待绘制的矩形*/
    
30. /*
    
31.   *创建矩形的代码起初看起来有点复杂，但是各个矩形的创建大同小异，它们的大小都是取决于WIDTH和HEIGHT的属性值
    
32.   */
    
33. //下面的矩形分别表示赛场的左右上下部分，以及赛场中央区域
    
34. Rectangle left=new Rectangle(0,0,WIDTH/9,HEIGHT);
    
35. Rectangle right=new Rectangle((WIDTH/9)*9,0,WIDTH/9,HEIGHT);
    
36. Rectangle top=new Rectangle(0,0,WIDTH,HEIGHT/9);
    
37. Rectangle bottom=new Rectangle(0,HEIGHT/9*9,(WIDTH/9)*10,HEIGHT/9);
    
38. Rectangle center = new Rectangle((int)((WIDTH/9)*2.5),(int)((HEIGHT/9)*2.5),(int)((WIDTH/9)*5),(int)((HEIGHT/9)*4));
    
39. //下面的矩形用于绘制跑道上的障碍物，以增加赛车的难度
    
40. Rectangle obstacle=new Rectangle(WIDTH/2,(int)((HEIGHT/9)*7),WIDTH/10,HEIGHT/9);
    
41. Rectangle obstacle2=new Rectangle(WIDTH/3,(int)((HEIGHT/9)*5),WIDTH/10,HEIGHT/4);
    
42. Rectangle obstacle3=new Rectangle(2*(WIDTH/3),(int)((HEIGHT/9)*5),WIDTH/10,HEIGHT/4);
    
43. Rectangle obstacle4=new Rectangle(WIDTH/3,HEIGHT/9,WIDTH/30,HEIGHT/9);
    
44. Rectangle obstacle5=new Rectangle(WIDTH/2,(int)((HEIGHT/9*1.5)),WIDTH/30,HEIGHT/4);
    
45. //下面的矩形用于绘制内外跑道的终点线
    
46. Rectangle finish=new Rectangle(WIDTH/9,(HEIGHT/2)-(HEIGHT/9),(int)((WIDTH/9)*1.5),(HEIGHT/70));
    
47. //下面的矩形用于绘制外跑道的起跑线
    
48. Rectangle line0=new Rectangle(WIDTH/9,HEIGHT/2,(int)((WIDTH/9)*1.5)/2,HEIGHT/140);
    
49. //下面的矩形用于绘制内跑道的起跑线
    
50. Rectangle line1=new Rectangle(((WIDTH/9)+((int)((WIDTH/9)*1.5)/2)),(HEIGHT/2)+(HEIGHT/10),(int)((WIDTH/9)*1.5)/2,HEIGHT/140);
    
51. //构造方法
    
52. public S1P9(){
    
53.   //使用下列代码设置JFrame
    
54.   super("Radical Racing");
    
55.   setSize(WIDTH/9*10,HEIGHT/9*10);
    
56.   setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    
57.   setVisible(true);
    
58.   Move1 m1=new Move1();
    
59.   Move2 m2=new Move2();
    
60.   m1.start();
    
61.   m2.start();
    
62. }
    
63. private class Move1 extends Thread{
    
64.   public void run(){
    
65.    //通过永久循环语句让赛车1不断向前行驶
    
66.    while(true){
    
67.     //用try...catch语句捕捉异常，如果运行出错，退出循环
    
68.     try{
    
69.      //刷新游戏屏幕
    
70.      repaint(0);
    
71.      //赛车行驶中加速
    
72.      if(p1Speed<=5){
    
73.       p1Speed+=.2;
    
74.      }
    
75.      p1.y-=p1Speed;
    
76.      //设置每次加速的间隔时间
    
77.      Thread.sleep(75);
    
78.     }catch(Exception e){
    
79.      //如果程序运行出错，那么退出循环
    
80.      break;
    
81.     }
    
82.    }
    
83.   }
    
84. }
    
85. private class Move2 extends Thread{
    
86.   public void run(){
    
87.    //通过永久循环语句让赛车2不断向前行驶
    
88.    while(true){
    
89.     //用try...catch语句捕捉异常，如果运行出错，退出循环
    
90.     try{
    
91.      //刷新游戏屏幕
    
92.      repaint(0);
    
93.      //赛车行驶中加速
    
94.      if(p2Speed<=5){
    
95.       p2Speed+=.2;
    
96.      }
    
97.      p2.y-=p2Speed;
    
98.      //设置每次加速的间隔时间
    
99.      Thread.sleep(75);
    
100.     }catch(Exception e){
     
101.      //如果程序运行出错，那么退出循环
     
102.      break;
     
103.     }
     
104.    }
     
105.   }
     
106. }
     
107. //该方法用于绘制赛车和赛场
     
108. public void paint(Graphics g){
     
109.   super.paint(g);
     
110.   //绘制赛场背景
     
111.   g.setColor(Color.DARK_GRAY);
     
112.   g.fillRect(0, 0, WIDTH, HEIGHT);
     
113.   //绘制时，先将场地设置为绿色
     
114.   g.setColor(Color.GREEN);
     
115.   //现在绘制各个矩形
     
116.   g.fillRect(left.x, left.y, left.width, left.height);
     
117.   g.fillRect(right.x, right.y, right.width, right.height);
     
118.   g.fillRect(top.x, top.y, top.width, top.height);
     
119.   g.fillRect(bottom.x, bottom.y, bottom.width, bottom.height);
     
120.   g.fillRect(center.x, center.y, center.width, center.height);
     
121.   g.fillRect(obstacle.x, obstacle.y, obstacle.width, obstacle.height);
     
122.   g.fillRect(obstacle2.x, obstacle2.y, obstacle2.width, obstacle2.height);
     
123.   g.fillRect(obstacle3.x, obstacle3.y, obstacle3.width, obstacle3.height);
     
124.   g.fillRect(obstacle4.x, obstacle4.y, obstacle4.width, obstacle4.height);
     
125.   g.fillRect(obstacle5.x, obstacle5.y, obstacle5.width, obstacle5.height);
     
126.   //设置起跑线为白色
     
127.   g.setColor(Color.WHITE);
     
128.   //绘制起跑线
     
129.   g.fillRect(line0.x, line0.y, line0.width, line0.height);
     
130.   g.fillRect(line1.x, line1.y, line1.width, line1.height);
     
131.   //设置终点线为黄色
     
132.   g.setColor(Color.YELLOW);
     
133.   //绘制终点线
     
134.   g.fillRect(finish.x, finish.y, finish.width, finish.height);
     
135.   
     
136.   
     
137.   g.setColor(Color.RED);
     
138.   //绘制赛车1
     
139.   g.fill3DRect(p1.x, p1.y, p1.width, p1.height,true);
     
140.   //设置赛车2为黑色
     
141.   g.setColor(Color.BLACK);
     
142.   //绘制赛车2
     
143.   g.fill3DRect(p2.x, p2.y, p2.width, p2.height, true);
     
144. }
     
145. }
     
146. 
     
147. 
     
148. 
     
149. <p> </p>

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1. 自己参考书上仿照着写的双人赛车游戏,刷新频率实在是太低了,屏幕闪烁的晃眼,求助怎么解决重绘游戏屏幕是闪烁的问题?
   
2. package S1P9;
   
3. //导入所需要的软件包
   
4. import javax.swing.*;
   
5. import javax.swing.event.*;
   
6. import java.awt.*;
   
7. import java.awt.event.*;
   
8. //创建的类S1P9继承于JFrame
   
9. public class S1P9 extends JFrame {
   
10. /**
    
11.   * @param args
    
12.   */
    
13. //通过调用构造方法运行该程序
    
14. public static void main(String[] args) {
    
15.   // TODO Auto-generated method stub
    
16.   new S1P9();
    
17. }
    
18. //设置游戏屏幕大小
    
19. final int WIDTH = 900, HEIGHT = 650;
    
20. 
    
21. 
    
22. 
    
23. double p1Speed=.5,p2Speed=.5;
    
24. Rectangle p1=new Rectangle(WIDTH/9,HEIGHT/2,WIDTH/30,WIDTH/30);
    
25. //下面的矩形代表第二辆赛车
    
26. Rectangle p2=new Rectangle(((WIDTH/9)+(int)(((WIDTH/9)*1.5)/2)),(HEIGHT/2)+(HEIGHT/10),WIDTH/30,WIDTH/30);
    
27. 
    
28. 
    
29. /*下面是待绘制的矩形*/
    
30. /*
    
31.   *创建矩形的代码起初看起来有点复杂，但是各个矩形的创建大同小异，它们的大小都是取决于WIDTH和HEIGHT的属性值
    
32.   */
    
33. //下面的矩形分别表示赛场的左右上下部分，以及赛场中央区域
    
34. Rectangle left=new Rectangle(0,0,WIDTH/9,HEIGHT);
    
35. Rectangle right=new Rectangle((WIDTH/9)*9,0,WIDTH/9,HEIGHT);
    
36. Rectangle top=new Rectangle(0,0,WIDTH,HEIGHT/9);
    
37. Rectangle bottom=new Rectangle(0,HEIGHT/9*9,(WIDTH/9)*10,HEIGHT/9);
    
38. Rectangle center = new Rectangle((int)((WIDTH/9)*2.5),(int)((HEIGHT/9)*2.5),(int)((WIDTH/9)*5),(int)((HEIGHT/9)*4));
    
39. //下面的矩形用于绘制跑道上的障碍物，以增加赛车的难度
    
40. Rectangle obstacle=new Rectangle(WIDTH/2,(int)((HEIGHT/9)*7),WIDTH/10,HEIGHT/9);
    
41. Rectangle obstacle2=new Rectangle(WIDTH/3,(int)((HEIGHT/9)*5),WIDTH/10,HEIGHT/4);
    
42. Rectangle obstacle3=new Rectangle(2*(WIDTH/3),(int)((HEIGHT/9)*5),WIDTH/10,HEIGHT/4);
    
43. Rectangle obstacle4=new Rectangle(WIDTH/3,HEIGHT/9,WIDTH/30,HEIGHT/9);
    
44. Rectangle obstacle5=new Rectangle(WIDTH/2,(int)((HEIGHT/9*1.5)),WIDTH/30,HEIGHT/4);
    
45. //下面的矩形用于绘制内外跑道的终点线
    
46. Rectangle finish=new Rectangle(WIDTH/9,(HEIGHT/2)-(HEIGHT/9),(int)((WIDTH/9)*1.5),(HEIGHT/70));
    
47. //下面的矩形用于绘制外跑道的起跑线
    
48. Rectangle line0=new Rectangle(WIDTH/9,HEIGHT/2,(int)((WIDTH/9)*1.5)/2,HEIGHT/140);
    
49. //下面的矩形用于绘制内跑道的起跑线
    
50. Rectangle line1=new Rectangle(((WIDTH/9)+((int)((WIDTH/9)*1.5)/2)),(HEIGHT/2)+(HEIGHT/10),(int)((WIDTH/9)*1.5)/2,HEIGHT/140);
    
51. //构造方法
    
52. public S1P9(){
    
53.   //使用下列代码设置JFrame
    
54.   super("Radical Racing");
    
55.   setSize(WIDTH/9*10,HEIGHT/9*10);
    
56.   setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    
57.   setVisible(true);
    
58.   Move1 m1=new Move1();
    
59.   Move2 m2=new Move2();
    
60.   m1.start();
    
61.   m2.start();
    
62. }
    
63. private class Move1 extends Thread{
    
64.   public void run(){
    
65.    //通过永久循环语句让赛车1不断向前行驶
    
66.    while(true){
    
67.     //用try...catch语句捕捉异常，如果运行出错，退出循环
    
68.     try{
    
69.      //刷新游戏屏幕
    
70.      repaint(0);
    
71.      //赛车行驶中加速
    
72.      if(p1Speed<=5){
    
73.       p1Speed+=.2;
    
74.      }
    
75.      p1.y-=p1Speed;
    
76.      //设置每次加速的间隔时间
    
77.      Thread.sleep(75);
    
78.     }catch(Exception e){
    
79.      //如果程序运行出错，那么退出循环
    
80.      break;
    
81.     }
    
82.    }
    
83.   }
    
84. }
    
85. private class Move2 extends Thread{
    
86.   public void run(){
    
87.    //通过永久循环语句让赛车2不断向前行驶
    
88.    while(true){
    
89.     //用try...catch语句捕捉异常，如果运行出错，退出循环
    
90.     try{
    
91.      //刷新游戏屏幕
    
92.      repaint(0);
    
93.      //赛车行驶中加速
    
94.      if(p2Speed<=5){
    
95.       p2Speed+=.2;
    
96.      }
    
97.      p2.y-=p2Speed;
    
98.      //设置每次加速的间隔时间
    
99.      Thread.sleep(75);
    
100.     }catch(Exception e){
     
101.      //如果程序运行出错，那么退出循环
     
102.      break;
     
103.     }
     
104.    }
     
105.   }
     
106. }
     
107. //该方法用于绘制赛车和赛场
     
108. public void paint(Graphics g){
     
109.   super.paint(g);
     
110.   //绘制赛场背景
     
111.   g.setColor(Color.DARK_GRAY);
     
112.   g.fillRect(0, 0, WIDTH, HEIGHT);
     
113.   //绘制时，先将场地设置为绿色
     
114.   g.setColor(Color.GREEN);
     
115.   //现在绘制各个矩形
     
116.   g.fillRect(left.x, left.y, left.width, left.height);
     
117.   g.fillRect(right.x, right.y, right.width, right.height);
     
118.   g.fillRect(top.x, top.y, top.width, top.height);
     
119.   g.fillRect(bottom.x, bottom.y, bottom.width, bottom.height);
     
120.   g.fillRect(center.x, center.y, center.width, center.height);
     
121.   g.fillRect(obstacle.x, obstacle.y, obstacle.width, obstacle.height);
     
122.   g.fillRect(obstacle2.x, obstacle2.y, obstacle2.width, obstacle2.height);
     
123.   g.fillRect(obstacle3.x, obstacle3.y, obstacle3.width, obstacle3.height);
     
124.   g.fillRect(obstacle4.x, obstacle4.y, obstacle4.width, obstacle4.height);
     
125.   g.fillRect(obstacle5.x, obstacle5.y, obstacle5.width, obstacle5.height);
     
126.   //设置起跑线为白色
     
127.   g.setColor(Color.WHITE);
     
128.   //绘制起跑线
     
129.   g.fillRect(line0.x, line0.y, line0.width, line0.height);
     
130.   g.fillRect(line1.x, line1.y, line1.width, line1.height);
     
131.   //设置终点线为黄色
     
132.   g.setColor(Color.YELLOW);
     
133.   //绘制终点线
     
134.   g.fillRect(finish.x, finish.y, finish.width, finish.height);
     
135.   
     
136.   
     
137.   g.setColor(Color.RED);
     
138.   //绘制赛车1
     
139.   g.fill3DRect(p1.x, p1.y, p1.width, p1.height,true);
     
140.   //设置赛车2为黑色
     
141.   g.setColor(Color.BLACK);
     
142.   //绘制赛车2
     
143.   g.fill3DRect(p2.x, p2.y, p2.width, p2.height, true);
     
144. }
     
145. }
     
146. 
     
147. 
     
148. 
     
149. <p> </p>

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