2.11BSD/src/games/backgammon/subs.c
/*
* Copyright (c) 1980 Regents of the University of California.
* All rights reserved. The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*/
#ifndef lint
static char sccsid[] = "@(#)subs.c 5.1 (Berkeley) 5/29/85";
#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");
if (c == '\177')
getout();
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;
}