#include <Turboc.h>

 <?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p>

#define MAX 1024

#define LEFT 75

#define RIGHT 77

#define UP 72

#define DOWN 80

#define ESC 27

 <o:p></o:p>

struct Signal

{

     BOOL exist;                // 신호의 존재 여부

     char ch;                 // 출력할 문자

     int x,y;                   // 현재 좌표

     int distance;           // 이동할 거리

     int nFrame;                 // 속도

     int nStay;               // 속도에 대한 카운트

};

Signal S[MAX];

 <o:p></o:p>

void main()

{

     int i;

     int ch;

     int freq=15;

     int frame=200;

 <o:p></o:p>

     clrscr();

     gotoxy(0,23);

     printf("매트릭스 흉내내기. 상하:속도 증감, 좌우:빈도 증감, ESC:종료");

     randomize();

     for (;;) {

          gotoxy(60,23);

          printf("속도:%d, 빈도:%d    ",frame,freq);

 <o:p></o:p>

          // 키 입력 처리

          if (kbhit()) {

              ch=getch();

              if (ch == 0xE0) {

                   ch=getch();

                   switch (ch) {

                   case UP:

                        frame=min(frame+10,1000);

                        break;

                   case DOWN:

                        frame=max(frame-10,10);

                        break;

                   case RIGHT:

                        freq=max(freq-1,1);

                        break;

                   case LEFT:

                        freq=min(freq+1,30);

                        break;

                   }

              } else {

                   if (ch == ESC) {

                        return;

                   }

              }

          }

 <o:p></o:p>

          // 새로운 신호 생성

          if (random(freq) == 0) {

              for (i=0;i<MAX;i++) {

                   if (S[i].exist == FALSE) {

                        S[i].exist=TRUE;

                        S[i].ch=random('Z'-'A'+1)+'A';

                        S[i].x=random(80);

                        S[i].y=0;

                        S[i].distance=random(14)+9;

                        S[i].nFrame=S[i].nStay=random(15)+5;

                        break;

                   }

              }

          }

 <o:p></o:p>

          // 주기가 다 된 신호 이동 및 제거 처리

          for (i=0;i<MAX;i++) {

              if (S[i].exist == FALSE)

                   continue;

              if (--S[i].nStay == 0) {

                   S[i].nStay=S[i].nFrame;

                   gotoxy(S[i].x,S[i].y);putch(' ');

                   if (++S[i].y < S[i].distance) {

                        gotoxy(S[i].x,S[i].y);putch(S[i].ch);

                   } else {

                        S[i].exist=FALSE;

                   }

              }

          }

 <o:p></o:p>

          delay(1000/frame);

     }

}