/*
                GNU GO - the game of Go (Wei-Chi)
                Version 1.1   last revised 3-1-89
           Copyright (C) Free Software Foundation, Inc.
                      written by Man L. Li
                      modified by Wayne Iba
                    documented by Bob Webber
*/
/*
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation - version 1.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License in file COPYING for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

Please report any bug/fix, modification, suggestion to

mail address:   Man L. Li
                Dept. of Computer Science
                University of Houston
                4800 Calhoun Road
                Houston, TX 77004

e-mail address: manli@cs.uh.edu         (Internet)
                coscgbn@uhvax1.bitnet   (BITNET)
                70070,404               (CompuServe)
*/

#include <stdio.h>
#include <unistd.h>

#define EMPTY 0

extern void showinst(void);
extern void seed(int *i);
extern void sethand(int i);
extern void showboard(void);
extern void genmove(int *i, int *j);
extern void getmove(char move[], int *i, int *j);
extern void examboard(int color);
extern void endgame(void);

unsigned char p[19][19], l[19][19], ma[19][19], ml[19][19];
int mymove, umove;
int rd, lib, play, pass;
int mik, mjk, uik, ujk, mk, uk;  /* piece captured */
int opn[9];  /* opening pattern flag */

int main(void)
  {
   FILE *fp;
   int i, j;
   char move[10], ans[5];
   int cont = 0;

/* show instruction */
   showinst();

   if ((fp = fopen("gnugo.dat", "r")) != NULL)  /* continue old game */
     {
      cont = 1;

/* read board configuration */
      for (i = 0; i < 19; i++)
        for (j = 0; j < 19; j++)
          fscanf(fp, "%c", &p[i][j]);

/* read my color, pieces captured */
      fscanf(fp, "%d %d %d ", &mymove, &mk, &uk);
/* read opening pattern flags */
      for (i = 0; i < 9; i++)
        fscanf(fp, "%d ", &opn[i]);

      fclose(fp);
      umove = 3 - mymove;

/* delete file */
      unlink("gnugo.dat");
    }
   else
     {
/* init opening pattern numbers to search */
      for (i = 0; i < 9; i++)
        opn[i] = 1;
      opn[4] = 0;

/* init board */
      for (i = 0; i < 19; i++)
        for (j = 0; j < 19; j++)
          p[i][j] = EMPTY;
/* init global variables */
      mk = 0;  uk = 0;
    }

/* init global variables */
   play = 1;
   pass = 0;
   mik = -1; mjk = -1;
   uik = -1; ujk = -1;
   seed(&rd);	/* start random number seed */

   if (!cont)  /* new game */
     {
/* ask for handicap */
      printf("Number of handicap for black (0 to 17)? ");
      scanf("%d", &i);
      getchar();
      sethand(i);

/* display game board */
      showboard();

/* choose color */
      printf("\nChoose side(b or w)? ");
      scanf("%c",ans);
      if (ans[0] == 'b')
        {
         mymove = 1;   /* computer white */
         umove = 2;   /* human black */
         if (i)
	   {
            genmove(&i, &j);   /* computer move */
            p[i][j] = mymove;
          }
       }
      else
        {
         mymove = 2;   /* computer black */
         umove = 1;   /* human white */
         if (i == 0)
	   {
            genmove(&i, &j);   /* computer move */
            p[i][j] = mymove;
          }
       }
    }

   showboard();

/* main loop */
   while (play > 0)
     {
      printf("your move? ");
      scanf("%s", move);
      getmove(move, &i, &j);   /* read human move */
      if (play > 0)
	{
	 if (i >= 0)   /* not pass */
	   {
	    p[i][j] = umove;
	    examboard(mymove);	 /* remove my dead pieces */
	  }
	 if (pass != 2)
	   {
	    genmove(&i, &j);   /* computer move */
	    if (i >= 0)   /* not pass */
	      {
	       p[i][j] = mymove;
	       examboard(umove);   /* remove your dead pieces */
	     }
	  }
	 showboard();
       }
      if (pass == 2) play = 0;	/* both pass then stop game */
    }

 if (play == 0)
   {
/* finish game and count pieces */
    getchar(); 
    printf("Do you want to count score (y or n)? ");
    scanf("%c",ans);
    if (ans[0] == 'y') endgame();
  }
  return 0; 
 }  /* end main */