1 /* $NetBSD: teach.c,v 1.15 2004/02/08 22:23:50 jsm 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 1.15 2004/02/08 22:23:50 jsm 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 __attribute__((__unused__)); 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