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. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * @(#) Copyright (c) 1980, 1993 The Regents of the University of California. All rights reserved.
34 * @(#)main.c 8.1 (Berkeley) 5/31/93
35 * $FreeBSD: src/games/backgammon/backgammon/main.c,v 1.13 1999/11/30 03:48:22 billf Exp $
36 * $DragonFly: src/games/backgammon/backgammon/main.c,v 1.3 2006/08/08 16:36:11 pavalos Exp $
44 #define MVPAUSE 5 /* time to sleep when stuck */
45 #define MAXUSERS 35 /* maximum number of users */
47 extern const char *const instr[]; /* text of instructions */
48 extern const char *const message[]; /* update message */
50 const char *helpm[] = { /* help message */
51 "Enter a space or newline to roll, or",
52 " R to reprint the board\tD to double",
53 " S to save the game\tQ to quit",
57 const char *contin[] = { /* pause message */
58 "(Type a newline to continue.)",
63 static const char rules[] = "\nDo you want the rules of the game?";
64 static const char noteach[] = "Teachgammon not available!\n\007";
65 static const char need[] = "Do you need instructions for this program?";
66 static const char askcol[] =
67 "Enter 'r' to play red, 'w' to play white, 'b' to play both:";
68 static const char rollr[] = "Red rolls a ";
69 static const char rollw[] = ". White rolls a ";
70 static const char rstart[] = ". Red starts.\n";
71 static const char wstart[] = ". White starts.\n";
72 static const char toobad1[] = "Too bad, ";
73 static const char unable[] = " is unable to use that roll.\n";
74 static const char toobad2[] = ". Too bad, ";
75 static const char cantmv[] = " can't move.\n";
76 static const char bgammon[] = "Backgammon! ";
77 static const char gammon[] = "Gammon! ";
78 static const char again[] = ".\nWould you like to play again?";
79 static const char svpromt[] = "Would you like to save this game?";
81 static const char password[] = "losfurng";
85 main(int argc, char **argv)
87 int i; /* non-descript index */
88 int l; /* non-descript index */
89 char c; /* non-descript character storage */
95 bflag = 2; /* default no board */
96 acnt = 1; /* Nuber of args */
97 signal (SIGINT,(sig_t)getout); /* trap interrupts */
98 if (ioctl(0, TIOCGETP, &tty) == -1) /* get old tty mode */
99 errexit ("backgammon(gtty)");
102 raw = ((noech = old & ~ECHO) | CBREAK); /* set up modes */
104 raw = ((noech = old & ~ECHO) | RAW); /* set up modes */
111 tflag = getcaps (getenv ("TERM"));
120 if (tflag) { /* clear screen */
121 noech &= ~(CRMOD|XTABS);
122 raw &= ~(CRMOD|XTABS);
125 fixtty (raw); /* go into raw mode */
130 if ((rfl = rflag) != 0) {
131 text (message); /* print message */
133 wrboard(); /* print board */
134 /* if new game, pretend
135 * to be a non-restored
140 rscore = wscore = 0; /* zero score */
141 text (message); /* update message
144 if (aflag) { /* print rules */
148 fixtty (old); /* restore tty */
149 args[0] = strdup ("teachgammon");
152 tflag = 0; /* error! */
155 } else { /* if not rules, then
158 if (yorn(0)) { /* print instructions */
165 for (i = 0; i < acnt; i++)
168 init(); /* initialize board */
170 if (pnum == 2) { /* ask for color(s) */
181 case 'W': /* white */
196 writel ("Password:");
197 signal (SIGALRM,(sig_t)getout);
200 for (i = 0; i < 10; i++) {
206 while (readc() != '\n');
211 for (i = 0; i < 9; i++)
212 if (pbuf[i] != password[i])
231 wrboard(); /* print board */
238 /* limit text to bottom
243 for (;;) { /* begin game! */
246 if ((! rflag) || raflag)
254 while (D0 == D1) /* no doubles */
263 /* winner goes first */
273 /* initalize variables
277 if (cturn == 1) { /* red */
284 Colorptr = &color[1];
285 colorptr = &color[3];
294 Colorptr = &color[0];
295 colorptr = &color[2];
301 if (! (rflag && raflag)) {
302 if (cturn == pnum) /* computer's move */
304 else { /* player's move */
308 curmove (cturn == -1? 18: 19,0);
310 getmove(); /* get player's move */
319 /* no longer any diff-
320 * erence between normal
325 /* move as long as it's
327 while (cturn == 1 || cturn == -1) {
329 /* board maintainence */
331 refresh(); /* fix board */
333 /* redo board if -p */
334 if (cturn == bflag || bflag == 0)
337 /* do computer's move */
343 if (cturn == -2 || cturn == 2)
356 /* (player's move) */
360 if (tflag && hflag) {
366 /* if allowed, give him
367 * a chance to double */
368 if (dlast != cturn && gvalue < 64) {
370 curmove (cturn == -1? 18: 19,0);
374 /* character cases */
408 /* see if he can move */
409 if ( (mvlim = movallow()) == 0) {
433 /* invalid character */
436 /* print help message */
443 curmove (cturn == -1? 18: 19,0);
450 } else { /* couldn't double */
455 curmove (cturn == -1? 18: 19,0);
459 if ((mvlim = movallow()) == 0) {
476 /* don't worry about who
481 /* fix cturn = winner */
484 /* final board pos. */
491 for (i = bar; i != l; i += cturn)
492 if (board[i]*cturn) mflag++;
494 /* compute game value */
502 else if (*offptr <= 0) {
508 /* report situation */
510 writel ("Red wins ");
513 writel ("White wins ");
528 if ((i = yorn ('S')) == 0)
538 /* yes, reset game */
542 /* give him a chance to save if game was recovered */
554 /* leave peacefully */