int
main (int argc, char **argv)
{
int i,l; /* non-descript indices */
char c; /* non-descript character storage */
if (pledge("stdio rpath wpath cpath tty exec", NULL) == -1)
err(1, "pledge");
signal(SIGINT, getout); /* trap interrupts */
/* use whole screen for text */
begscr = 0;
getarg(argc, argv);
initcurses();
/* check if restored game and save flag for later */
if ((rfl = rflag)) {
if (pledge("stdio rpath wpath cpath tty", NULL) == -1)
err(1, "pledge");
wrboard(); /* print board */
/* if new game, pretend to be a non-restored game */
if (cturn == 0)
rflag = 0;
} else {
rscore = wscore = 0; /* zero score */
if (aflag) { /* print rules */
addstr(rules);
if (yorn(0)) {
endwin();
execl(TEACH, "teachgammon", (char *)NULL);
err(1, "%s", noteach);
} else {/* if not rules, then instructions */
addstr(need);
if (yorn(0)) { /* print instructions */
clear();
text(instruct);
}
}
}
if (pledge("stdio rpath wpath cpath tty", NULL) == -1)
err(1, "pledge");
init(); /* initialize board */
if (pnum == 2) {/* ask for color(s) */
printw("\n%s", askcol);
while (pnum == 2) {
c = readc();
switch (c) {
case 'R': /* red */
pnum = -1;
break;
case 'W': /* white */
pnum = 1;
break;
case 'B': /* both */
pnum = 0;
break;
case 'P': /* Control the dice */
iroll = 1;
addstr("\nDice controlled!\n");
addstr(askcol);
break;
default: /* error */
beep();
}
}
}
wrboard(); /* print board */
move(18, 0);
}
/* limit text to bottom of screen */
begscr = 17;
for (;;) { /* begin game! */
/* initial roll if needed */
if ((!rflag) || raflag)
roll();
/* perform ritual of first roll */
if (!rflag) {
move(17, 0);
while (D0 == D1) /* no doubles */
roll();
/* print rolls */
printw("%s%d%s%d", rollr, D0, rollw, D1);
/* winner goes first */
if (D0 > D1) {
addstr(rstart);
cturn = 1;
} else {
addstr(wstart);
cturn = -1;
}
}
/* initialize variables according to whose turn it is */
if (cturn == 1) { /* red */
home = 25;
bar = 0;
inptr = &in[1];
inopp = &in[0];
offptr = &off[1];
offopp = &off[0];
Colorptr = &color[1];
colorptr = &color[3];
colen = 3;
} else { /* white */
home = 0;
bar = 25;
inptr = &in[0];
inopp = &in[1];
offptr = &off[0];
offopp = &off[1];
Colorptr = &color[0];
colorptr = &color[2];
colen = 5;
}
/* do first move (special case) */
if (!(rflag && raflag)) {
if (cturn == pnum) /* computer's move */
domove(0);
else { /* player's move */
mvlim = movallow();
/* reprint roll */
move(cturn == -1 ? 18 : 19, 0);
proll();
getmove(); /* get player's move */
}
}
move(17, 0);
clrtoeol();
begscr = 18;
/* no longer any difference between normal and recovered game. */
rflag = 0;
/* move as long as it's someone's turn */
while (cturn == 1 || cturn == -1) {
/* board maintainence */
moveplayers(); /* fix board */
/* do computer's move */
if (cturn == pnum) {
domove(1);
/* see if double refused */
if (cturn == -2 || cturn == 2)
break;
/* check for winning move */
if (*offopp == 15) {
cturn *= -2;
break;
}
continue;
}
/* (player's move) */
/* clean screen if safe */
if (hflag) {
move(20, 0);
clrtobot();
hflag = 1;
}
/* if allowed, give him a chance to double */
if (dflag && dlast != cturn && gvalue < 64) {
move(cturn == -1 ? 18: 19, 0);
addstr(*Colorptr);
c = readc();
/* character cases */
switch (c) {
case 'R': /* reprint board */
wrboard();
break;
case 'S': /* save game */
raflag = 1;
save(1);
break;
case 'Q': /* quit */
quit();
break;
case 'D': /* double */
dble();
break;
case ' ': /* roll */
case '\n':
roll();
printw(" rolls %d %d. ", D0, D1);
/* see if he can move */
if ((mvlim = movallow()) == 0) {
/* can't move */
printw("%s%s%s", toobad1, *colorptr, unable);
if (pnum) {
moveplayers();
sleep(MVPAUSE);
}
nexturn();
break;
}
getmove();
/* okay to clean screen */
hflag = 1;
break;
default: /* invalid character */
/* print help message */
move(20, 0);
text(helpm);
move(cturn == -1 ? 18 : 19, 0);
/* don't erase */
hflag = 0;
}
} else {/* couldn't double */
/* print roll */
roll();
move(cturn == -1 ? 18: 19, 0);
proll();
/* can he move? */
if ((mvlim = movallow()) == 0) {
/* he can't */
printw("%s%s%s", toobad2, *colorptr, cantmv);
moveplayers();
sleep(MVPAUSE);
nexturn();
continue;
}
getmove();
}
}
/* don't worry about who won if quit */
if (cturn == 0)
break;
/* fix cturn = winner */
cturn /= -2;
/* final board pos. */
moveplayers();
/* backgammon? */
mflag = 0;
l = bar + 7 * cturn;
for (i = bar; i != l; i += cturn)
if (board[i] * cturn)
mflag++;
/* compute game value */
move(20, 0);
if (*offopp == 15) {
if (mflag) {
addstr(bgammon);
gvalue *= 3;
}
else if (*offptr <= 0) {
addstr(gammon);
gvalue *= 2;
}
}
/* report situation */
if (cturn == -1) {
addstr("Red wins ");
rscore += gvalue;
} else {
addstr("White wins ");
wscore += gvalue;
}
printw("%d point%s.\n", gvalue, (gvalue > 1) ? "s":"");
/* write score */
wrscore();
/* see if he wants another game */
addstr(again);
if ((i = yorn('S')) == 0)
break;
init();
if (i == 2) {
addstr(" Save.\n");
cturn = 0;
save(0);
}
/* yes, reset game */
wrboard();
}
/* give him a chance to save if game was recovered */
if (rfl && cturn) {
addstr(svpromt);
if (yorn(0)) {
/* re-initialize for recovery */
init();
cturn = 0;
save(0);
}
}
/* leave peacefully */
getout(0);
/* NOT REACHED */
}
tutor () {
register int i, j;
i = 0;
begscr = 18;
cturn = -1;
home = 0;
bar = 25;
inptr = &in[0];
inopp = &in[1];
offptr = &off[0];
offopp = &off[1];
Colorptr = &color[0];
colorptr = &color[2];
colen = 5;
wrboard();
while (1) {
if (! brdeq(test[i].brd,board)) {
if (tflag && curr == 23)
curmove (18,0);
writel (better);
nexturn();
movback (mvlim);
if (tflag) {
refresh();
clrest ();
}
if ((! tflag) || curr == 19) {
proll();
writec ('\t');
}
else
curmove (curr > 19? curr-2: curr+4,25);
getmove();
if (cturn == 0)
leave();
continue;
}
if (tflag)
curmove (18,0);
text (*test[i].com);
if (! tflag)
writec ('\n');
if (i == maxmoves)
break;
D0 = test[i].roll1;
D1 = test[i].roll2;
d0 = 0;
mvlim = 0;
for (j = 0; j < 4; j++) {
if (test[i].mp[j] == test[i].mg[j])
break;
p[j] = test[i].mp[j];
g[j] = test[i].mg[j];
mvlim++;
}
if (mvlim)
for (j = 0; j < mvlim; j++)
if (makmove(j))
writel ("AARGH!!!\n");
if (tflag)
refresh();
nexturn();
D0 = test[i].new1;
D1 = test[i].new2;
d0 = 0;
i++;
mvlim = movallow();
if (mvlim) {
if (tflag)
clrest();
proll();
writec('\t');
getmove();
if (tflag)
refresh();
if (cturn == 0)
leave();
}
}
leave();
}
/* zero if first move */
void
move(int okay)
{
int i; /* index */
int l; /* last man */
l = 0;
if (okay) {
/* see if comp should double */
if (gvalue < 64 && dlast != cturn && dblgood()) {
writel(*Colorptr);
dble(); /* double */
/* return if declined */
if (cturn != 1 && cturn != -1)
return;
}
roll();
}
race = 0;
for (i = 0; i < 26; i++) {
if (board[i] < 0)
l = i;
}
for (i = 0; i < l; i++) {
if (board[i] > 0)
break;
}
if (i == l)
race = 1;
/* print roll */
if (tflag)
curmove(cturn == -1 ? 18 : 19, 0);
writel(*Colorptr);
writel(" rolls ");
writec(D0 + '0');
writec(' ');
writec(D1 + '0');
/* make tty interruptable while thinking */
if (tflag)
cline();
fixtty(noech);
/* find out how many moves */
mvlim = movallow();
if (mvlim == 0) {
writel(" but cannot use it.\n");
nexturn();
fixtty(raw);
return;
}
/* initialize */
for (i = 0; i < 4; i++)
cp[i] = cg[i] = 0;
/* strategize */
trymove(0, 0);
pickmove();
/* print move */
writel(" and moves ");
for (i = 0; i < mvlim; i++) {
if (i > 0)
writec(',');
wrint(p[i] = cp[i]);
writec('-');
wrint(g[i] = cg[i]);
makmove(i);
}
writec('.');
/* print blots hit */
if (tflag)
curmove(20, 0);
else
writec('\n');
for (i = 0; i < mvlim; i++)
if (h[i])
wrhit(g[i]);
/* get ready for next move */
nexturn();
if (!okay) {
buflush();
sleep(3);
}
fixtty(raw); /* no more tty interrupt */
}
void
domove(int okay)
{
int i; /* index */
int l = 0; /* last man */
bestmove = -9999999.;
if (okay) {
/* see if comp should double */
if (dflag && gvalue < 64 && dlast != cturn && dblgood()) {
addstr(*Colorptr);
dble(); /* double */
/* return if declined */
if (cturn != 1 && cturn != -1)
return;
}
roll();
}
race = 0;
for (i = 0; i < 26; i++) {
if (board[i] < 0)
l = i;
}
for (i = 0; i < l; i++) {
if (board[i] > 0)
break;
}
if (i == l)
race = 1;
/* print roll */
move(cturn == -1 ? 18 : 19, 0);
printw("%s rolls %d %d", *Colorptr, D0, D1);
clrtoeol();
/* find out how many moves */
mvlim = movallow();
if (mvlim == 0) {
addstr(" but cannot use it.\n");
nexturn();
return;
}
/* initialize */
for (i = 0; i < 4; i++)
cp[i] = cg[i] = 0;
/* strategize */
trymove(0, 0);
pickmove();
/* print move */
addstr(" and moves ");
for (i = 0; i < mvlim; i++) {
if (i > 0)
addch(',');
printw("%d-%d", p[i] = cp[i], g[i] = cg[i]);
makmove(i);
}
addch('.');
/* print blots hit */
move(20, 0);
for (i = 0; i < mvlim; i++)
if (h[i])
wrhit(g[i]);
/* get ready for next move */
nexturn();
if (!okay) {
refresh();
sleep(3);
}
}
void
tutor(void)
{
int i, j, k;
int wrongans;
wrongans = 0;
i = 0;
begscr = 18;
cturn = -1;
home = 0;
bar = 25;
inptr = &in[0];
inopp = &in[1];
offptr = &off[0];
offopp = &off[1];
Colorptr = &color[0];
colorptr = &color[2];
colen = 5;
wrboard();
while (1) {
if (!brdeq(test[i].brd, board)) {
wrongans++;
move(18, 0);
if (wrongans >= 3) {
wrongans = 0;
text(*test[i].ans);
memcpy(board,test[i].brd,26*sizeof(int));
/* and have to fix *inptr, *offptr; player is red (+ve) */
k = 0;
for (j = 19; j < 26; j++)
k += (board[j] > 0 ? board[j] : 0);
*inopp = k;
for (j = 0; j < 19; j++)
k += (board[j] > 0 ? board[j] : 0);
*offopp = k - 30; /* -15 at start */
moveplayers();
clrest();
} else {
addstr(better);
nexturn();
movback(mvlim);
moveplayers();
clrest();
getyx(stdscr, j, k);
if (j == 19) {
proll();
addch('\t');
} else
move(j > 19 ? j - 2 : j + 4, 25);
getmove();
if (cturn == 0)
leave();
continue;
}
} else
wrongans = 0;
move(18, 0);
text(*test[i].com);
move(19, 0);
if (i == maxmoves)
break;
D0 = test[i].roll1;
D1 = test[i].roll2;
d0 = 0;
mvlim = 0;
for (j = 0; j < 4; j++) {
if (test[i].mp[j] == test[i].mg[j])
break;
p[j] = test[i].mp[j];
g[j] = test[i].mg[j];
mvlim++;
}
if (mvlim)
for (j = 0; j < mvlim; j++)
if (makmove(j))
addstr("AARGH!!!\n");
moveplayers();
nexturn();
D0 = test[i].new1;
D1 = test[i].new2;
d0 = 0;
i++;
mvlim = movallow();
if (mvlim) {
clrest();
proll();
addch('\t');
getmove();
moveplayers();
if (cturn == 0)
leave();
}
}
leave();
}
/* zero if first move */
void
move(struct move *mm, int okay)
{
int i; /* index */
int l; /* last man */
l = 0;
if (okay) {
/* see if comp should double */
if (gvalue < 64 && dlast != cturn && dblgood()) {
writel(*Colorptr);
dble(); /* double */
/* return if declined */
if (cturn != 1 && cturn != -1)
return;
}
roll(mm);
}
race = 0;
for (i = 0; i < 26; i++) {
if (board[i] < 0)
l = i;
}
for (i = 0; i < l; i++) {
if (board[i] > 0)
break;
}
if (i == l)
race = 1;
/* print roll */
if (tflag)
curmove(cturn == -1 ? 18 : 19, 0);
writel(*Colorptr);
writel(" rolls ");
writec(mm->D0 + '0');
writec(' ');
writec(mm->D1 + '0');
/* make tty interruptable while thinking */
if (tflag)
cline();
fixtty(&noech);
/* find out how many moves */
mm->mvlim = movallow(mm);
if (mm->mvlim == 0) {
writel(" but cannot use it.\n");
nexturn();
fixtty(&raw);
return;
}
/* initialize */
for (i = 0; i < 4; i++)
cp[i] = cg[i] = 0;
/* strategize */
trymove(mm, 0, 0);
pickmove(mm);
/* print move */
writel(" and moves ");
for (i = 0; i < mm->mvlim; i++) {
if (i > 0)
writec(',');
wrint(mm->p[i] = cp[i]);
writec('-');
wrint(mm->g[i] = cg[i]);
makmove(mm, i);
/*
* This assertion persuades gcc 4.5 that the loop
* doesn't result in signed overflow of i. mvlim
* isn't, or at least shouldn't be, changed by makmove
* at all.
*/
assert(mm->mvlim >= 0 && mm->mvlim <= 5);
}
writec('.');
/* print blots hit */
if (tflag)
curmove(20, 0);
else
writec('\n');
for (i = 0; i < mm->mvlim; i++)
if (mm->h[i])
wrhit(mm->g[i]);
/* get ready for next move */
nexturn();
if (!okay) {
buflush();
sleep(3);
}
fixtty(&raw); /* no more tty interrupt */
}