🚀 go-pugleaf

While playing around with porting gnuchess I kept running into problems
with the program dropping out of the opening book.  I modified the input
routine to verify the opening book.  It is a little crude, but could be
helpful to others if they add moves to the opening book.  (The original
book had numerous illegal moves).

Daryl Baker
dkb@mitre.org

======

Add to nondsp.c

#ifdef DEBUGBOOK
void
InputCommand (void)
{
#ifndef BOOK
#define BOOK "/usr/games/lib/gnuchess.book"
#endif /* BOOK */     
  FILE *fd;
  int c, i, j, side, ok;
  int line;
  short unsigned int mv;
  int startnewline;
  char s[80];
  char buff[2048], *buffr;
  char blk[12], wht[12];

   printz ("Verifying openning book\n");

   if ((fd = fopen (BOOK, "r")) == NULL) fd = fopen ("gnuchess.book", "r");
   
   if (fd != NULL) {
      line = 0;
      startnewline = false;
      while ( fgets ( buff, sizeof (buff),fd ) != NULL ) {
	 buffr = buff;
         line ++;
         while ( isalpha(*buffr) && isspace(*buffr) && *buffr) buffr ++;
         if ( *buffr == '!') {
		if ( startnewline ) {
			NewGame();
		}
		startnewline = false;
		continue;
	 }
         *wht = '\0'; *blk='\0';
         sscanf ( buffr, "%10s %10s", &wht, &blk);
	 startnewline = true;         
         /* verify the white move */
         if ( *wht ) {
      	  computer = black;
      	  opponent = white;
          player = opponent;
      	  Sdepth = 0;
      	  ok = VerifyMove (wht, 0, &mv);
            if ( !ok ) {
               printz ("\nbad white move %s on line %d\n",wht, line);
               break;
            }
         }

         /* verify the black move */
         if ( *blk ) {
      	  computer = white;
      	  opponent = black;
          player = opponent;
      	  Sdepth = 0;
      	  ok = VerifyMove (blk, 0, &mv);
            if ( !ok ) {
               printz ("\nbad black move %s on line %d\n",blk, line);
               break;
            }
         }
      }
      fclose (fd);
   } else printz ("can't find book\n");
   flag.quit = true;
}

#else
/* The regular InputCommand routine goes here */
#endif