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teach.c revision 1.13 
      1 /*	$NetBSD: teach.c,v 1.13 2001/04/06 11:13:52 wiz Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1980, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by the University of
     18  *	California, Berkeley and its contributors.
     19  * 4. Neither the name of the University nor the names of its contributors
     20  *    may be used to endorse or promote products derived from this software
     21  *    without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  */
     35 
     36 #include <sys/cdefs.h>
     37 #ifndef lint
     38 __COPYRIGHT("@(#) Copyright (c) 1980, 1993\n\
     39 	The Regents of the University of California.  All rights reserved.\n");
     40 #endif				/* not lint */
     41 
     42 #ifndef lint
     43 #if 0
     44 static char sccsid[] = "@(#)teach.c	8.1 (Berkeley) 5/31/93";
     45 #else
     46 __RCSID("$NetBSD: teach.c,v 1.13 2001/04/06 11:13:52 wiz Exp $");
     47 #endif
     48 #endif				/* not lint */
     49 
     50 #include "back.h"
     51 #include "tutor.h"
     52 
     53 const char   *const helpm[] = {
     54 	"\nEnter a space or newline to roll, or",
     55 	"     b   to display the board",
     56 	"     d   to double",
     57 	"     q   to quit\n",
     58 	0
     59 };
     60 
     61 const char   *const contin[] = {
     62 	"",
     63 	0
     64 };
     65 
     66 int
     67 main(argc, argv)
     68 	int     argc;
     69 	char   *argv[];
     70 {
     71 	int     i;
     72 
     73 	/* revoke setgid privileges */
     74 	setgid(getgid());
     75 
     76 	signal(SIGINT, getout);
     77 	if (tcgetattr(0, &old) == -1)	/* get old tty mode */
     78 		errexit("teachgammon(gtty)");
     79 	noech = old;
     80 	noech.c_lflag &= ~ECHO;
     81 	raw = noech;
     82 	raw.c_lflag &= ~ICANON;	/* set up modes */
     83 	ospeed = cfgetospeed(&old);	/* for termlib */
     84 	tflag = getcaps(getenv("TERM"));
     85 #ifdef V7
     86 	while (*++argv != 0)
     87 #else
     88 	while (*++argv != -1)
     89 #endif
     90 		getarg(&argv);
     91 	if (tflag) {
     92 		noech.c_oflag &= ~(ONLCR | OXTABS);
     93 		raw.c_oflag &= ~(ONLCR | OXTABS);
     94 		clear();
     95 	}
     96 	text(hello);
     97 	text(list);
     98 	i = text(contin);
     99 	if (i == 0)
    100 		i = 2;
    101 	init();
    102 	while (i)
    103 		switch (i) {
    104 		case 1:
    105 			leave();
    106 
    107 		case 2:
    108 			if ((i = text(intro1)) != 0)
    109 				break;
    110 			wrboard();
    111 			if ((i = text(intro2)) != 0)
    112 				break;
    113 
    114 		case 3:
    115 			if ((i = text(moves)) != 0)
    116 				break;
    117 
    118 		case 4:
    119 			if ((i = text(removepiece)) != 0)
    120 				break;
    121 
    122 		case 5:
    123 			if ((i = text(hits)) != 0)
    124 				break;
    125 
    126 		case 6:
    127 			if ((i = text(endgame)) != 0)
    128 				break;
    129 
    130 		case 7:
    131 			if ((i = text(doubl)) != 0)
    132 				break;
    133 
    134 		case 8:
    135 			if ((i = text(stragy)) != 0)
    136 				break;
    137 
    138 		case 9:
    139 			if ((i = text(prog)) != 0)
    140 				break;
    141 
    142 		case 10:
    143 			if ((i = text(lastch)) != 0)
    144 				break;
    145 		}
    146 	tutor();
    147 	/* NOTREACHED */
    148 	return (0);
    149 }
    150 
    151 void
    152 leave()
    153 {
    154 	if (tflag)
    155 		clear();
    156 	else
    157 		writec('\n');
    158 	fixtty(&old);
    159 	execl(EXEC, "backgammon", "-n", args[0]?args:0, 0);
    160 	writel("Help! Backgammon program is missing\007!!\n");
    161 	exit(1);
    162 }
    163