2 * Copyright (c) 1980, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
29 * @(#) Copyright (c) 1980, 1993 The Regents of the University of California. All rights reserved.
30 * @(#)main.c 8.1 (Berkeley) 5/31/93
31 * $FreeBSD: src/games/backgammon/backgammon/main.c,v 1.13 1999/11/30 03:48:22 billf Exp $
42 #define MVPAUSE 5 /* time to sleep when stuck */
43 #define MAXUSERS 35 /* maximum number of users */
45 extern const char *const instr[]; /* text of instructions */
46 extern const char *const message[]; /* update message */
48 const char *helpm[] = { /* help message */
49 "Enter a space or newline to roll, or",
50 " R to reprint the board\tD to double",
51 " S to save the game\tQ to quit",
55 const char *contin[] = { /* pause message */
56 "(Type a newline to continue.)",
61 static const char rules[] = "\nDo you want the rules of the game?";
62 static const char noteach[] = "Teachgammon not available!\n\a";
63 static const char need[] = "Do you need instructions for this program?";
64 static const char askcol[] =
65 "Enter 'r' to play red, 'w' to play white, 'b' to play both:";
66 static const char rollr[] = "Red rolls a ";
67 static const char rollw[] = ". White rolls a ";
68 static const char rstart[] = ". Red starts.\n";
69 static const char wstart[] = ". White starts.\n";
70 static const char toobad1[] = "Too bad, ";
71 static const char unable[] = " is unable to use that roll.\n";
72 static const char toobad2[] = ". Too bad, ";
73 static const char cantmv[] = " can't move.\n";
74 static const char bgammon[] = "Backgammon! ";
75 static const char gammon[] = "Gammon! ";
76 static const char again[] = ".\nWould you like to play again?";
77 static const char svpromt[] = "Would you like to save this game?";
79 static const char password[] = "losfurng";
83 main(int argc, char **argv)
92 bflag = 2; /* default no board */
93 acnt = 1; /* Number of args */
94 signal(SIGINT, getout); /* trap interrupts */
95 if (tcgetattr(0, &tty) == -1) /* get old tty mode */
96 errexit("backgammon(tcgetattr)");
98 raw = ((noech = old & ~ECHO) & ~ICANON); /* set up modes */
99 ospeed = cfgetospeed(&tty); /* for termlib */
101 /* get terminal capabilities, and decide if it can cursor address */
102 tflag = getcaps(getenv("TERM"));
103 /* use whole screen for text */
110 if (tflag) { /* clear screen */
111 noech &= ~(ICRNL | OXTABS);
112 raw &= ~(ICRNL | OXTABS);
115 fixtty(raw); /* go into raw mode */
117 /* check if restored game and save flag for later */
118 if ((rfl = rflag) != 0) {
119 text(message); /* print message */
121 wrboard(); /* print board */
122 /* if new game, pretend
123 * to be a non-restored game
128 rscore = wscore = 0; /* zero score */
129 text(message); /* update message
132 if (aflag) { /* print rules */
135 fixtty(old); /* restore tty */
136 args[0] = strdup("teachgammon");
139 tflag = 0; /* error! */
142 } else { /* if not rules, then
146 if (yorn(0)) { /* print instructions */
153 for (i = 0; i < acnt; i++)
156 init(); /* initialize board */
158 if (pnum == 2) { /* ask for color(s) */
168 case 'W': /* white */
184 signal(SIGALRM, getout);
187 for (i = 0; i < 10; i++) {
193 while (readc() != '\n');
198 for (i = 0; i < 9; i++)
199 if (pbuf[i] != password[i])
215 /* pause to read message */
218 wrboard(); /* print board */
225 /* limit text to bottom of screen */
229 for (;;) { /* begin game! */
230 /* initial roll if needed */
231 if ((!rflag) || raflag)
234 /* perform ritual of first roll */
238 while (D0 == D1) /* no doubles */
247 /* winner goes first */
257 /* initialize variables according to whose turn it is */
258 if (cturn == 1) { /* red */
265 Colorptr = &color[1];
266 colorptr = &color[3];
275 Colorptr = &color[0];
276 colorptr = &color[2];
280 /* do first move (special case) */
281 if (!(rflag && raflag)) {
282 if (cturn == pnum) /* computer's move */
284 else { /* player's move */
288 curmove(cturn == -1 ? 18 : 19, 0);
290 getmove(); /* get player's move */
299 /* no longer any difference between normal and recovered game. */
302 /* move as long as it's someone's turn */
303 while (cturn == 1 || cturn == -1) {
304 /* board maintenance */
306 refresh(); /* fix board */
308 /* redo board if -p */
309 if (cturn == bflag || bflag == 0)
312 /* do computer's move */
316 /* see if double refused */
317 if (cturn == -2 || cturn == 2)
320 /* check for winning move */
328 /* (player's move) */
330 /* clean screen if safe */
331 if (tflag && hflag) {
337 /* if allowed, give him a chance to double */
338 if (dlast != cturn && gvalue < 64) {
340 curmove(cturn == -1 ? 18 : 19, 0);
344 /* character cases */
346 case 'R': /* reprint board */
350 case 'S': /* save game */
359 case 'D': /* double */
372 /* see if he can move */
373 if ((mvlim = movallow()) == 0) {
391 /* okay to clean screen */
395 /* invalid character */
398 /* print help message */
405 curmove(cturn == -1 ? 18 : 19,
413 } else { /* couldn't double */
417 curmove(cturn == -1 ? 18 : 19, 0);
421 if ((mvlim = movallow()) == 0) {
437 /* don't worry about who won if quit */
441 /* fix cturn = winner */
444 /* final board pos. */
451 for (i = bar; i != l; i += cturn)
452 if (board[i] * cturn)
455 /* compute game value */
469 /* report situation */
474 writel("White wins ");
486 /* see if he wants another game */
488 if ((i = yorn('S')) == 0)
498 /* yes, reset game */
502 /* give him a chance to save if game was recovered */
506 /* re-initialize for recovery */
513 /* leave peacefully */