4.4BSD/usr/src/games/backgammon/common_source/subs.c
/*
* Copyright (c) 1980, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
static char sccsid[] = "@(#)subs.c 8.1 (Berkeley) 5/31/93";
#endif /* not lint */
#include <stdio.h>
#include "back.h"
int buffnum;
char outbuff[BUFSIZ];
static char plred[] = "Player is red, computer is white.";
static char plwhite[] = "Player is white, computer is red.";
static char nocomp[] = "(No computer play.)";
char *descr[] = {
"Usage: backgammon [-] [n r w b pr pw pb t3a]\n",
"\t-\tgets this list\n\tn\tdon't ask for rules or instructions",
"\tr\tplayer is red (implies n)\n\tw\tplayer is white (implies n)",
"\tb\ttwo players, red and white (implies n)",
"\tpr\tprint the board before red's turn",
"\tpw\tprint the board before white's turn",
"\tpb\tprint the board before both player's turn",
"\tterm\tterminal is a term",
"\tsfile\trecover saved game from file",
0
};
errexit (s)
register char *s;
{
write (2,"\n",1);
perror (s);
getout();
}
strset (s1,s2)
register char *s1, *s2;
{
while ( (*s1++ = *s2++) != '\0');
}
addbuf (c)
register char c;
{
buffnum++;
if (buffnum == BUFSIZ) {
if (write(1,outbuff,BUFSIZ) != BUFSIZ)
errexit ("addbuf (write):");
buffnum = 0;
}
outbuff[buffnum] = c;
}
buflush () {
if (buffnum < 0)
return;
buffnum++;
if (write (1,outbuff,buffnum) != buffnum)
errexit ("buflush (write):");
buffnum = -1;
}
readc () {
char c;
if (tflag) {
cline();
newpos();
}
buflush();
if (read(0,&c,1) != 1)
errexit ("readc");
#ifdef WHY_IS_THIS_HARDWIRED_IN_HERE
if (c == '\177')
getout();
#endif
if (c == '\033' || c == '\015')
return ('\n');
if (cflag)
return (c);
if (c == '\014')
return ('R');
if (c >= 'a' && c <= 'z')
return (c & 0137);
return (c);
}
writec (c)
char c;
{
if (tflag)
fancyc (c);
else
addbuf (c);
}
writel (l)
register char *l;
{
#ifdef DEBUG
register char *s;
if (trace == NULL)
trace = fopen ("bgtrace","w");
fprintf (trace,"writel: \"");
for (s = l; *s; s++) {
if (*s < ' ' || *s == '\177')
fprintf (trace,"^%c",(*s)^0100);
else
putc (*s,trace);
}
fprintf (trace,"\"\n");
fflush (trace);
#endif
while (*l)
writec (*l++);
}
proll () {
if (d0)
swap;
if (cturn == 1)
writel ("Red's roll: ");
else
writel ("White's roll: ");
writec (D0+'0');
writec ('\040');
writec (D1+'0');
if (tflag)
cline();
}
wrint (n)
int n;
{
register int i, j, t;
for (i = 4; i > 0; i--) {
t = 1;
for (j = 0; j<i; j++)
t *= 10;
if (n > t-1)
writec ((n/t)%10+'0');
}
writec (n%10+'0');
}
gwrite() {
register int r, c;
if (tflag) {
r = curr;
c = curc;
curmove (16,0);
}
if (gvalue > 1) {
writel ("Game value: ");
wrint (gvalue);
writel (". ");
if (dlast == -1)
writel (color[0]);
else
writel (color[1]);
writel (" doubled last.");
} else {
switch (pnum) {
case -1: /* player is red */
writel (plred);
break;
case 0: /* player is both colors */
writel (nocomp);
break;
case 1: /* player is white */
writel (plwhite);
}
}
if (rscore || wscore) {
writel (" ");
wrscore();
}
if (tflag) {
cline();
curmove (r,c);
}
}
quit () {
register int i;
if (tflag) {
curmove (20,0);
clend();
} else
writec ('\n');
writel ("Are you sure you want to quit?");
if (yorn (0)) {
if (rfl) {
writel ("Would you like to save this game?");
if (yorn(0))
save(0);
}
cturn = 0;
return (1);
}
return (0);
}
yorn (special)
register char special; /* special response */
{
register char c;
register int i;
i = 1;
while ( (c = readc()) != 'Y' && c != 'N') {
if (special && c == special)
return (2);
if (i) {
if (special) {
writel (" (Y, N, or ");
writec (special);
writec (')');
} else
writel (" (Y or N)");
i = 0;
} else
writec ('\007');
}
if (c == 'Y')
writel (" Yes.\n");
else
writel (" No.\n");
if (tflag)
buflush();
return (c == 'Y');
}
wrhit (i)
register int i;
{
writel ("Blot hit on ");
wrint (i);
writec ('.');
writec ('\n');
}
nexturn () {
register int c;
cturn = -cturn;
c = cturn/abs(cturn);
home = bar;
bar = 25-bar;
offptr += c;
offopp -= c;
inptr += c;
inopp -= c;
Colorptr += c;
colorptr += c;
}
getarg (arg)
register char ***arg;
{
register char **s;
/* process arguments here. dashes are ignored, nbrw are ignored
if the game is being recovered */
s = *arg;
while (s[0][0] == '-') {
switch (s[0][1]) {
/* don't ask if rules or instructions needed */
case 'n':
if (rflag)
break;
aflag = 0;
args[acnt++] = 'n';
break;
/* player is both read and white */
case 'b':
if (rflag)
break;
pnum = 0;
aflag = 0;
args[acnt++] = 'b';
break;
/* player is red */
case 'r':
if (rflag)
break;
pnum = -1;
aflag = 0;
args[acnt++] = 'r';
break;
/* player is white */
case 'w':
if (rflag)
break;
pnum = 1;
aflag = 0;
args[acnt++] = 'w';
break;
/* print board after move according to following character */
case 'p':
if (s[0][2] != 'r' && s[0][2] != 'w' && s[0][2] != 'b')
break;
args[acnt++] = 'p';
args[acnt++] = s[0][2];
if (s[0][2] == 'r')
bflag = 1;
if (s[0][2] == 'w')
bflag = -1;
if (s[0][2] == 'b')
bflag = 0;
break;
case 't':
if (s[0][2] == '\0') { /* get terminal caps */
s++;
tflag = getcaps (*s);
} else
tflag = getcaps (&s[0][2]);
break;
case 's':
s++;
/* recover file */
recover (s[0]);
break;
}
s++;
}
if (s[0] != 0)
recover(s[0]);
}
init () {
register int i;
for (i = 0; i < 26;)
board[i++] = 0;
board[1] = 2;
board[6] = board[13] = -5;
board[8] = -3;
board[12] = board[19] = 5;
board[17] = 3;
board[24] = -2;
off[0] = off[1] = -15;
in[0] = in[1] = 5;
gvalue = 1;
dlast = 0;
}
wrscore () {
writel ("Score: ");
writel (color[1]);
writec (' ');
wrint (rscore);
writel (", ");
writel (color[0]);
writec (' ');
wrint (wscore);
}
fixtty (mode)
int mode;
{
if (tflag)
newpos();
buflush();
tty.sg_flags = mode;
if (stty (0,&tty) < 0)
errexit("fixtty");
}
getout () {
/* go to bottom of screen */
if (tflag) {
curmove (23,0);
cline();
} else
writec ('\n');
/* fix terminal status */
fixtty (old);
exit();
}
roll () {
register char c;
register int row;
register int col;
if (iroll) {
if (tflag) {
row = curr;
col = curc;
curmove (17,0);
} else
writec ('\n');
writel ("ROLL: ");
c = readc();
if (c != '\n') {
while (c < '1' || c > '6')
c = readc();
D0 = c-'0';
writec (' ');
writec (c);
c = readc();
while (c < '1' || c > '6')
c = readc();
D1 = c-'0';
writec (' ');
writec (c);
if (tflag) {
curmove (17,0);
cline();
curmove (row,col);
} else
writec ('\n');
return;
}
if (tflag) {
curmove (17,0);
cline();
curmove (row,col);
} else
writec ('\n');
}
D0 = rnum(6)+1;
D1 = rnum(6)+1;
d0 = 0;
}