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C语言实现乒乓球比赛的实例分析
更新：HHH 时间：2023-1-7

这篇文章主要讲解了C语言实现乒乓球比赛的实例分析，内容清晰明了，对此有兴趣的小伙伴可以学习一下，相信大家阅读完之后会有帮助。

1）、基本要求

用8个LED发光管(红黄绿)的来回滚动显示来模拟打乒乓球时乒乓球在两边球台上的来回运动。比赛双方用按钮/开关(双方各用1个按钮/开关)的方法来模拟发球与接球,即发球方按动其控制的按钮/开关/健,球从发球方一侧向对方运动(LED发光管从发球方到对方逐个点亮,滚动显示),当球运动至接球方时,接球方立即按动其控制的按钮/开关/键,“击球”使球“弹回”发球方一侧，如此周而复始，直至在规定的击球时间内有一方未能完成击球动作，从而对方得一分，然后继续比赛。比赛规则可参照一般的乒乓球比赛规则。

要求：

(1). 球以每0.5秒滚过1个LED的速度移动;

(2). 回球需在球到达后的0.5秒内进行(按下按钮),否则按失球计;

(3). 球未到达提前按下按钮按失球处理，不起回球作用;

(4). 用扩展的4个七段数码（小键盘上）为双方记分(每方2个八段码, ,按10进制计数,初始值00:00,可自行设计显示及规则)

2）、设计提示

球到达接球方后,立即读接球方的按钮状态,若未按则有效(若已按下则按失球计),然后不断读此按钮状态,直到按下代表“击球”动作。（采用中断，可以用同一个按键轮流按动识别）。

3）、进一步设计要求

(1). 在8×8点阵（虚拟大屏）同步显示球移动情况，设计显示输赢球图形状态、效果等；移动、击球等精确（中断）计时;

(2). 通过拨动开关或键盘设定改变球移动速度,即每个LED管点亮时间分别为0.5秒、0.3秒、0.2秒;通过拨动开关或键盘设定改变允许击球时间0.3秒、0.2秒、0.1秒;球移动速度取决于击球时间,即球移动速度(每个LED点亮时间)在0.2~0.5秒内可变,具体取决于球到达接球方后击球所花的时间0~0.5秒如花费的时间短则回球后球移动速度快反之回球后移动

#include "interface.h"
void init8255(void); 
const unsigned short Port8255Base=0x288;
const unsigned char ControlWord8255=0x80;
Input/Output.PortA:Output
unsigned char gData=0x80;
int flag=0;
int num=0;
const unsigned char ControlWord8255B = 0x82;
const unsigned char ControlWord8255E = 0x88;
void init8255B(void); 
int scoreleft,scoreright;
int speedlamp;
int speed2;
int speed3;
 
void turnleft()
{
 gData=1;
 while(1)
 {
 PortWriteByte(Port8255Base,gData);
 if(gData==128)
 {
 flag=0;
 break;
 }
 gData*=2;
 sleep(speedlamp);
 }
}
void turnright()
{
 gData=128;
 while(1)
 {
 PortWriteByte(Port8255Base,gData);
 if(gData==1)
 {
 flag=1;
 break;
 }
 gData/=2;
 sleep(speedlamp);
 }
}
unsigned char led[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
BYTE pdata;
BYTE reflect;
void main( )
{
 init8255B();
  //int speedlamp=500;
 BYTE controldudu;
 PortReadByte(Port8255Base + 2, &controldudu);
 printf("%d \n",controldudu);
 controldudu/=32;
 int k5=controldudu%2;
 controldudu/=2;
 int k6=controldudu%2;
 if(k6==0)
 speedlamp=500;
 else
 speedlamp=50;
 if(k5==0)
 speed2=500;
 else
 speed2=1;
 printf("%d %d\n",k6,k5);
 pdata/=16;
 scoreleft=0;
 scoreright=0;
 BYTE pdata=0; 
  int k0=0;
 int k7=0;
 int score0=0;
 int score1=0;
 
 BYTE old=0;
 BYTE now;
 int k0old,k0new,k7old,k7new;
 k0old=old%2;
 k7old=old/8;
 while(1)
 {
 printf("\n当前分数：%d : %d\n",scoreleft,scoreright);
 
 int yyy=5;
 while(yyy--){
 PortWriteByte(Port8255Base+2,0x01); 
 PortWriteByte(Port8255Base+1,led[scoreright%10]);
 sleep(1); //delay 100ms
 PortWriteByte(Port8255Base+2,0x02); 
 PortWriteByte(Port8255Base+1,led[scoreright/10]); 
  sleep(1); 
 PortWriteByte(Port8255Base+2,0x04); 
 PortWriteByte(Port8255Base+1,led[scoreleft%10]);
 sleep(1); //delay 100ms
 PortWriteByte(Port8255Base+2,0x08); 
 PortWriteByte(Port8255Base+1,led[scoreleft/10]); 
  sleep(1); 
 PortWriteByte(Port8255Base+2,0);
 }
 PortReadByte(Port8255Base + 2, &pdata);
 pdata/=16;
 sleep(500);
 printf("--%d",pdata);
 printf("old:%d new:%d\n",old,pdata);
 if(old==pdata)
 {
 continue;
 }
 else
 {
 k7old=old/8;
 k0old=old%2;
 k0new=pdata%2;
 k7new=pdata/8;
 if(k7old!=k7new)
 {
  //printf("---here---\n");
 again:
  turnright();
  old=pdata;
  k0old=old%2;
  PortReadByte(Port8255Base + 2, &now);
  now/=16;
  k0old=now%2;
  if(speed2>50)
  {
  sleep(200);
  PortReadByte(Port8255Base + 2, &reflect);
  reflect/=16;
  if(!(reflect==pdata))
  {
  pdata=reflect;
  speedlamp=200;
  goto r1;
  }
  else
  {
  sleep(100);
  PortReadByte(Port8255Base + 2, &reflect);
  reflect/=16;
  if(!(reflect==pdata))
  {
  pdata=reflect;
  speedlamp=1000;
  goto r1;
  }
  else
  {
  sleep(100);
  PortReadByte(Port8255Base + 2, &reflect);
  reflect/=16;
  if(!(reflect==pdata))
  {
   pdata=reflect;
   speedlamp=4000;
   goto r1;
  }
  else
  {
   sleep(100);
   goto r2;
  }
  }
  }
  }
  else
  sleep(speed2);
  r2:
  PortReadByte(Port8255Base + 2, &pdata);
  pdata/=16;
  r1:
  k0new=pdata%2;
  printf("speedlamp:%d\n",speedlamp);
  if(!(old!=pdata&&k0old!=k0new))
  {
  printf("\n--right lose--\n");
  scoreleft++;
  sleep(500);
  PortReadByte(Port8255Base + 2, &pdata);
  pdata/=16;
  old=pdata;
  k7old=old/8;
  k0old=old%2;
  k0new=pdata%2;
  k7new=pdata/8;
  }
  else
  {
  printf("\nback\n");
  turnleft();
  old=pdata;
  k7old=old/8;
  PortReadByte(Port8255Base + 2, &now);
  k7old=now/128;
  if(speed2>50)
  {
  sleep(200);
  PortReadByte(Port8255Base + 2, &reflect);
  reflect/=16;
  if(!(reflect==pdata))
  {
  pdata=reflect;
  speedlamp=200;
  goto r3;
  }
  else
  {
  sleep(100);
  PortReadByte(Port8255Base + 2, &reflect);
  reflect/=16;
  if(!(reflect==pdata))
  {
   pdata=reflect;
   speedlamp=1000;
   goto r3;
  }
  else
  {
   sleep(100);
   PortReadByte(Port8255Base + 2, &reflect);
   reflect/=16;
   if(!(reflect==pdata))
   {
   pdata=reflect;
   speedlamp=4000;
   goto r3;
   }
   else
   {
   sleep(100);
   goto r4;
   }
  }
  }
  }
  else
  sleep(speed2);
  r4:
  PortReadByte(Port8255Base + 2, &pdata);
  pdata/=16;
  r3:
  k7new=pdata/8;
  if(!(old!=pdata&&k7old!=k7new))
  {
  printf("\n--left lose--\n");
  scoreright++;
  }
  else
  {
  goto again;
  }
  }
 }
 else if(k0old!=k0new)
 {
 again2:
  turnleft();
  old=pdata;
  k7old=old/8;
  PortReadByte(Port8255Base + 2, &now);
  k7old=now/128;
  if(speed2>50)
  {
  sleep(200);
  PortReadByte(Port8255Base + 2, &reflect);
  reflect/=16;
  if(!(reflect==pdata))
  {
  pdata=reflect;
  speedlamp=200;
  goto r7;
  }
  else
  {
  sleep(100);
  PortReadByte(Port8255Base + 2, &reflect);
  reflect/=16;
  if(!(reflect==pdata))
  {
  pdata=reflect;
  speedlamp=1000;
  goto r7;
  }
  else
  {
  sleep(100);
  PortReadByte(Port8255Base + 2, &reflect);
  reflect/=16;
  if(!(reflect==pdata))
  {
   pdata=reflect;
   speedlamp=2000;
   goto r7;
  }
  else
  {
   sleep(100);
   goto r8;
  }
  }
  }
  }
  sleep(speed2);
  r8:
  PortReadByte(Port8255Base + 2, &pdata);
  pdata/=16;
  r7:
  k7new=pdata/8;
  if(!(old!=pdata&&k7old!=k7new))
  {
  printf("\n--left lose--\n");
  scoreright++;
  sleep(500);
  PortReadByte(Port8255Base + 2, &pdata);
  pdata/=16;
  old=pdata;
  k7old=old/8;
  k0old=old%2;
  k0new=pdata%2;
  k7new=pdata/8;
  }
  else
  {
  printf("\nback\n");
  turnright();
  old=pdata;
  k7old=old/8;
  PortReadByte(Port8255Base + 2, &now);
  now/=16;
  k0old=now%2;
  if(speed2>50)
  {
  sleep(200);
  PortReadByte(Port8255Base + 2, &reflect);
  reflect/=16;
  if(!(reflect==pdata))
  {
  pdata=reflect;
  speedlamp=200;
  goto r5;
  }
  else
  {
  sleep(100);
  PortReadByte(Port8255Base + 2, &reflect);
  reflect/=16;
  if(!(reflect==pdata))
  {
   pdata=reflect;
   speedlamp=100;
   goto r5;
  }
  else
  {
   sleep(100);
   PortReadByte(Port8255Base + 2, &reflect);
   reflect/=16;
   if(!(reflect==pdata))
   {
   pdata=reflect;
   speedlamp=2000;
   goto r5;
   }
   else
   {
   sleep(100);
   goto r6;
   }
  }
  }
  }
  sleep(speed2);
  r6:
  PortReadByte(Port8255Base + 2, &pdata);
  pdata/=16;
  r5:
  k7new=pdata/8;
  if(!(old!=pdata&&k0old!=k0new))
  {
  printf("\n--right lose--\n");
  scoreleft++;
  }
  else
  {
  goto again2;
  }
  }
 }
 }
 
 }
 Cleanup();
}
 
void init8255(void)
{
 if (!Startup()) 
 {
 printf("\n\n  ERROR: Open Device Error!请打开实验箱电源\n");
 _getch();
 exit(0);
 }
  PortWriteByte(Port8255Base + 3, ControlWord8255); 
}
 
void init8255B(void)
{
 if (!Startup())
 {
 printf("\n\n  ERROR: Open Device Error!请打开实验箱电源\n");
 _getch();
 exit(0); // return to Windows
 }
 PortWriteByte(Port8255Base + 3, ControlWord8255E); 
}

看完上述内容，是不是对C语言实现乒乓球比赛的实例分析有进一步的了解，如果还想学习更多内容，欢迎关注天达云行业资讯频道。


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