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