games/backgammon/teachgammon/teach.c

   1 /*
   2  * Copyright (c) 1980, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by the University of
  16  *      California, Berkeley and its contributors.
  17  * 4. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  *
  33  * @(#) Copyright (c) 1980, 1993 The Regents of the University of California.  All rights reserved.
  34  * @(#)teach.c  8.1 (Berkeley) 5/31/93
  35  * $FreeBSD: src/games/backgammon/teachgammon/teach.c,v 1.12 1999/11/30 03:48:30 billf Exp $
  36  * $DragonFly: src/games/backgammon/teachgammon/teach.c,v 1.3 2006/08/08 16:36:11 pavalos Exp $
  37  */
  38
  39 #include <string.h>
  40 #include <sys/types.h>
  41 #include <signal.h>
  42 #include "back.h"
  43 #include "tutor.h"
  44
  45 const char *const helpm[] = {
  46         "\nEnter a space or newline to roll, or",
  47         "     b   to display the board",
  48         "     d   to double",
  49         "     q   to quit\n",
  50         0
  51 };
  52
  53 const char *const contin[] = {
  54         "",
  55         0
  56 };
  57
  58 int
  59 main(int argc, char **argv)
  60 {
  61         int     i;
  62
  63         /* revoke privs */
  64         setgid(getgid());
  65
  66         acnt = 1;
  67         signal (SIGINT,(sig_t)getout);
  68         if (ioctl(0,TIOCGETP,&tty) == -1)                       /* get old tty mode */
  69                 errexit ("teachgammon(gtty)");
  70         old = tty.sg_flags;
  71 #ifdef V7
  72         raw = ((noech = old & ~ECHO) | CBREAK);         /* set up modes */
  73 #else
  74         raw = ((noech = old & ~ECHO) | RAW);            /* set up modes */
  75 #endif
  76         tflag = getcaps (getenv ("TERM"));
  77         getarg (argc, argv);
  78         if (tflag)  {
  79                 noech &= ~(CRMOD|XTABS);
  80                 raw &= ~(CRMOD|XTABS);
  81                 clear();
  82         }
  83         text (hello);
  84         text (list);
  85         i = text (contin);
  86         if (i == 0)
  87                 i = 2;
  88         init();
  89         while (i)
  90                 switch (i)  {
  91
  92                 case 1:
  93                         leave();
  94
  95                 case 2:
  96                         if ((i = text(intro1)) != 0)
  97                                 break;
  98                         wrboard();
  99                         if ((i = text(intro2)) != 0)
 100                                 break;
 101
 102                 case 3:
 103                         if ((i = text(moves)) != 0)
 104                                 break;
 105
 106                 case 4:
 107                         if ((i = text(remove)) != 0)
 108                                 break;
 109
 110                 case 5:
 111                         if ((i = text(hits)) != 0)
 112                                 break;
 113
 114                 case 6:
 115                         if ((i = text(endgame)) != 0)
 116                                 break;
 117
 118                 case 7:
 119                         if ((i = text(doubl)) != 0)
 120                                 break;
 121
 122                 case 8:
 123                         if ((i = text(stragy)) != 0)
 124                                 break;
 125
 126                 case 9:
 127                         if ((i = text(prog)) != 0)
 128                                 break;
 129
 130                 case 10:
 131                         if ((i = text(lastch)) != 0)
 132                                 break;
 133                 }
 134         tutor();
 135         /* NOTREACHED */
 136         return(0);
 137 }
 138
 139 void
 140 leave(void)
 141 {
 142         int i;
 143         if (tflag)
 144                 clear();
 145         else
 146                 writec ('\n');
 147         fixtty(old);
 148         args[0] = strdup("backgammon");
 149         args[acnt++] = strdup("-n");
 150         args[acnt] = 0;
 151         execv (EXEC,args);
 152         for (i = 0; i < acnt; i++)
 153             free (args[i]);
 154         writel ("Help! Backgammon program is missing\007!!\n");
 155         exit (-1);
 156 }