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teach.c revision 1.14 
      1 /*	$NetBSD: teach.c,v 1.14 2003/08/07 09:36:58 agc 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. Neither the name of the University nor the names of its contributors
     16  *    may be used to endorse or promote products derived from this software
     17  *    without specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     29  * SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 #ifndef lint
     34 __COPYRIGHT("@(#) Copyright (c) 1980, 1993\n\
     35 	The Regents of the University of California.  All rights reserved.\n");
     36 #endif				/* not lint */
     37 
     38 #ifndef lint
     39 #if 0
     40 static char sccsid[] = "@(#)teach.c	8.1 (Berkeley) 5/31/93";
     41 #else
     42 __RCSID("$NetBSD: teach.c,v 1.14 2003/08/07 09:36:58 agc Exp $");
     43 #endif
     44 #endif				/* not lint */
     45 
     46 #include "back.h"
     47 #include "tutor.h"
     48 
     49 const char   *const helpm[] = {
     50 	"\nEnter a space or newline to roll, or",
     51 	"     b   to display the board",
     52 	"     d   to double",
     53 	"     q   to quit\n",
     54 	0
     55 };
     56 
     57 const char   *const contin[] = {
     58 	"",
     59 	0
     60 };
     61 
     62 int
     63 main(argc, argv)
     64 	int     argc;
     65 	char   *argv[];
     66 {
     67 	int     i;
     68 
     69 	/* revoke setgid privileges */
     70 	setgid(getgid());
     71 
     72 	signal(SIGINT, getout);
     73 	if (tcgetattr(0, &old) == -1)	/* get old tty mode */
     74 		errexit("teachgammon(gtty)");
     75 	noech = old;
     76 	noech.c_lflag &= ~ECHO;
     77 	raw = noech;
     78 	raw.c_lflag &= ~ICANON;	/* set up modes */
     79 	ospeed = cfgetospeed(&old);	/* for termlib */
     80 	tflag = getcaps(getenv("TERM"));
     81 #ifdef V7
     82 	while (*++argv != 0)
     83 #else
     84 	while (*++argv != -1)
     85 #endif
     86 		getarg(&argv);
     87 	if (tflag) {
     88 		noech.c_oflag &= ~(ONLCR | OXTABS);
     89 		raw.c_oflag &= ~(ONLCR | OXTABS);
     90 		clear();
     91 	}
     92 	text(hello);
     93 	text(list);
     94 	i = text(contin);
     95 	if (i == 0)
     96 		i = 2;
     97 	init();
     98 	while (i)
     99 		switch (i) {
    100 		case 1:
    101 			leave();
    102 
    103 		case 2:
    104 			if ((i = text(intro1)) != 0)
    105 				break;
    106 			wrboard();
    107 			if ((i = text(intro2)) != 0)
    108 				break;
    109 
    110 		case 3:
    111 			if ((i = text(moves)) != 0)
    112 				break;
    113 
    114 		case 4:
    115 			if ((i = text(removepiece)) != 0)
    116 				break;
    117 
    118 		case 5:
    119 			if ((i = text(hits)) != 0)
    120 				break;
    121 
    122 		case 6:
    123 			if ((i = text(endgame)) != 0)
    124 				break;
    125 
    126 		case 7:
    127 			if ((i = text(doubl)) != 0)
    128 				break;
    129 
    130 		case 8:
    131 			if ((i = text(stragy)) != 0)
    132 				break;
    133 
    134 		case 9:
    135 			if ((i = text(prog)) != 0)
    136 				break;
    137 
    138 		case 10:
    139 			if ((i = text(lastch)) != 0)
    140 				break;
    141 		}
    142 	tutor();
    143 	/* NOTREACHED */
    144 	return (0);
    145 }
    146 
    147 void
    148 leave()
    149 {
    150 	if (tflag)
    151 		clear();
    152 	else
    153 		writec('\n');
    154 	fixtty(&old);
    155 	execl(EXEC, "backgammon", "-n", args[0]?args:0, 0);
    156 	writel("Help! Backgammon program is missing\007!!\n");
    157 	exit(1);
    158 }
    159