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Initial import, 0.1 + pk 0.2.4-B1
[unix-history] / games / hack / hack.c
/* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
/* hack.c - version 1.0.3 */
#include "hack.h"
#include <stdio.h>
extern char news0();
extern char *nomovemsg;
extern char *exclam();
extern struct obj *addinv();
extern boolean hmon();
/* called on movement:
1. when throwing ball+chain far away
2. when teleporting
3. when walking out of a lit room
*/
unsee() {
register x,y;
register struct rm *lev;
/*
if(u.udispl){
u.udispl = 0;
newsym(u.udisx, u.udisy);
}
*/
#ifndef QUEST
if(seehx){
seehx = 0;
} else
#endif QUEST
for(x = u.ux-1; x < u.ux+2; x++)
for(y = u.uy-1; y < u.uy+2; y++) {
if(!isok(x, y)) continue;
lev = &levl[x][y];
if(!lev->lit && lev->scrsym == '.') {
lev->scrsym =' ';
lev->new = 1;
on_scr(x,y);
}
}
}
/* called:
in hack.eat.c: seeoff(0) - blind after eating rotten food
in hack.mon.c: seeoff(0) - blinded by a yellow light
in hack.mon.c: seeoff(1) - swallowed
in hack.do.c: seeoff(0) - blind after drinking potion
in hack.do.c: seeoff(1) - go up or down the stairs
in hack.trap.c:seeoff(1) - fall through trapdoor
*/
seeoff(mode) /* 1 to redo @, 0 to leave them */
{ /* 1 means misc movement, 0 means blindness */
register x,y;
register struct rm *lev;
if(u.udispl && mode){
u.udispl = 0;
levl[u.udisx][u.udisy].scrsym = news0(u.udisx,u.udisy);
}
#ifndef QUEST
if(seehx) {
seehx = 0;
} else
#endif QUEST
if(!mode) {
for(x = u.ux-1; x < u.ux+2; x++)
for(y = u.uy-1; y < u.uy+2; y++) {
if(!isok(x, y)) continue;
lev = &levl[x][y];
if(!lev->lit && lev->scrsym == '.')
lev->seen = 0;
}
}
}
domove()
{
xchar oldx,oldy;
register struct monst *mtmp;
register struct rm *tmpr,*ust;
struct trap *trap;
register struct obj *otmp;
u_wipe_engr(rnd(5));
if(inv_weight() > 0){
pline("You collapse under your load.");
nomul(0);
return;
}
if(u.uswallow) {
u.dx = u.dy = 0;
u.ux = u.ustuck->mx;
u.uy = u.ustuck->my;
} else {
if(Confusion) {
do {
confdir();
} while(!isok(u.ux+u.dx, u.uy+u.dy) ||
IS_ROCK(levl[u.ux+u.dx][u.uy+u.dy].typ));
}
if(!isok(u.ux+u.dx, u.uy+u.dy)){
nomul(0);
return;
}
}
ust = &levl[u.ux][u.uy];
oldx = u.ux;
oldy = u.uy;
if(!u.uswallow && (trap = t_at(u.ux+u.dx, u.uy+u.dy)) && trap->tseen)
nomul(0);
if(u.ustuck && !u.uswallow && (u.ux+u.dx != u.ustuck->mx ||
u.uy+u.dy != u.ustuck->my)) {
if(dist(u.ustuck->mx, u.ustuck->my) > 2){
/* perhaps it fled (or was teleported or ... ) */
u.ustuck = 0;
} else {
if(Blind) pline("You cannot escape from it!");
else pline("You cannot escape from %s!",
monnam(u.ustuck));
nomul(0);
return;
}
}
if(u.uswallow || (mtmp = m_at(u.ux+u.dx,u.uy+u.dy))) {
/* attack monster */
nomul(0);
gethungry();
if(multi < 0) return; /* we just fainted */
/* try to attack; note that it might evade */
if(attack(u.uswallow ? u.ustuck : mtmp))
return;
}
/* not attacking an animal, so we try to move */
if(u.utrap) {
if(u.utraptype == TT_PIT) {
pline("You are still in a pit.");
u.utrap--;
} else {
pline("You are caught in a beartrap.");
if((u.dx && u.dy) || !rn2(5)) u.utrap--;
}
return;
}
tmpr = &levl[u.ux+u.dx][u.uy+u.dy];
if(IS_ROCK(tmpr->typ) ||
(u.dx && u.dy && (tmpr->typ == DOOR || ust->typ == DOOR))){
flags.move = 0;
nomul(0);
return;
}
while(otmp = sobj_at(ENORMOUS_ROCK, u.ux+u.dx, u.uy+u.dy)) {
register xchar rx = u.ux+2*u.dx, ry = u.uy+2*u.dy;
register struct trap *ttmp;
nomul(0);
if(isok(rx,ry) && !IS_ROCK(levl[rx][ry].typ) &&
(levl[rx][ry].typ != DOOR || !(u.dx && u.dy)) &&
!sobj_at(ENORMOUS_ROCK, rx, ry)) {
if(m_at(rx,ry)) {
pline("You hear a monster behind the rock.");
pline("Perhaps that's why you cannot move it.");
goto cannot_push;
}
if(ttmp = t_at(rx,ry))
switch(ttmp->ttyp) {
case PIT:
pline("You push the rock into a pit!");
deltrap(ttmp);
delobj(otmp);
pline("It completely fills the pit!");
continue;
case TELEP_TRAP:
pline("You push the rock and suddenly it disappears!");
delobj(otmp);
continue;
}
if(levl[rx][ry].typ == POOL) {
levl[rx][ry].typ = ROOM;
mnewsym(rx,ry);
prl(rx,ry);
pline("You push the rock into the water.");
pline("Now you can cross the water!");
delobj(otmp);
continue;
}
otmp->ox = rx;
otmp->oy = ry;
/* pobj(otmp); */
if(cansee(rx,ry)) atl(rx,ry,otmp->olet);
if(Invisible) newsym(u.ux+u.dx, u.uy+u.dy);
{ static long lastmovetime;
/* note: this var contains garbage initially and
after a restore */
if(moves > lastmovetime+2 || moves < lastmovetime)
pline("With great effort you move the enormous rock.");
lastmovetime = moves;
}
} else {
pline("You try to move the enormous rock, but in vain.");
cannot_push:
if((!invent || inv_weight()+90 <= 0) &&
(!u.dx || !u.dy || (IS_ROCK(levl[u.ux][u.uy+u.dy].typ)
&& IS_ROCK(levl[u.ux+u.dx][u.uy].typ)))){
pline("However, you can squeeze yourself into a small opening.");
break;
} else
return;
}
}
if(u.dx && u.dy && IS_ROCK(levl[u.ux][u.uy+u.dy].typ) &&
IS_ROCK(levl[u.ux+u.dx][u.uy].typ) &&
invent && inv_weight()+40 > 0) {
pline("You are carrying too much to get through.");
nomul(0);
return;
}
if(Punished &&
DIST(u.ux+u.dx, u.uy+u.dy, uchain->ox, uchain->oy) > 2){
if(carried(uball)) {
movobj(uchain, u.ux, u.uy);
goto nodrag;
}
if(DIST(u.ux+u.dx, u.uy+u.dy, uball->ox, uball->oy) < 3){
/* leave ball, move chain under/over ball */
movobj(uchain, uball->ox, uball->oy);
goto nodrag;
}
if(inv_weight() + (int) uball->owt/2 > 0) {
pline("You cannot %sdrag the heavy iron ball.",
invent ? "carry all that and also " : "");
nomul(0);
return;
}
movobj(uball, uchain->ox, uchain->oy);
unpobj(uball); /* BAH %% */
uchain->ox = u.ux;
uchain->oy = u.uy;
nomul(-2);
nomovemsg = "";
nodrag: ;
}
u.ux += u.dx;
u.uy += u.dy;
if(flags.run) {
if(tmpr->typ == DOOR ||
(xupstair == u.ux && yupstair == u.uy) ||
(xdnstair == u.ux && ydnstair == u.uy))
nomul(0);
}
if(tmpr->typ == POOL && !Levitation)
drown(); /* not necessarily fatal */
/*
if(u.udispl) {
u.udispl = 0;
newsym(oldx,oldy);
}
*/
if(!Blind) {
#ifdef QUEST
setsee();
#else
if(ust->lit) {
if(tmpr->lit) {
if(tmpr->typ == DOOR)
prl1(u.ux+u.dx,u.uy+u.dy);
else if(ust->typ == DOOR)
nose1(oldx-u.dx,oldy-u.dy);
} else {
unsee();
prl1(u.ux+u.dx,u.uy+u.dy);
}
} else {
if(tmpr->lit) setsee();
else {
prl1(u.ux+u.dx,u.uy+u.dy);
if(tmpr->typ == DOOR) {
if(u.dy) {
prl(u.ux-1,u.uy);
prl(u.ux+1,u.uy);
} else {
prl(u.ux,u.uy-1);
prl(u.ux,u.uy+1);
}
}
}
nose1(oldx-u.dx,oldy-u.dy);
}
#endif QUEST
} else {
pru();
}
if(!flags.nopick) pickup(1);
if(trap) dotrap(trap); /* fall into pit, arrow trap, etc. */
(void) inshop();
if(!Blind) read_engr_at(u.ux,u.uy);
}
movobj(obj, ox, oy)
register struct obj *obj;
register int ox, oy;
{
/* Some dirty programming to get display right */
freeobj(obj);
unpobj(obj);
obj->nobj = fobj;
fobj = obj;
obj->ox = ox;
obj->oy = oy;
}
dopickup(){
if(!g_at(u.ux,u.uy) && !o_at(u.ux,u.uy)) {
pline("There is nothing here to pick up.");
return(0);
}
if(Levitation) {
pline("You cannot reach the floor.");
return(1);
}
pickup(0);
return(1);
}
pickup(all)
{
register struct gold *gold;
register struct obj *obj, *obj2;
register int wt;
if(Levitation) return;
while(gold = g_at(u.ux,u.uy)) {
pline("%ld gold piece%s.", gold->amount, plur(gold->amount));
u.ugold += gold->amount;
flags.botl = 1;
freegold(gold);
if(flags.run) nomul(0);
if(Invisible) newsym(u.ux,u.uy);
}
/* check for more than one object */
if(!all) {
register int ct = 0;
for(obj = fobj; obj; obj = obj->nobj)
if(obj->ox == u.ux && obj->oy == u.uy)
if(!Punished || obj != uchain)
ct++;
if(ct < 2)
all++;
else
pline("There are several objects here.");
}
for(obj = fobj; obj; obj = obj2) {
obj2 = obj->nobj; /* perhaps obj will be picked up */
if(obj->ox == u.ux && obj->oy == u.uy) {
if(flags.run) nomul(0);
/* do not pick up uchain */
if(Punished && obj == uchain)
continue;
if(!all) {
char c;
pline("Pick up %s ? [ynaq]", doname(obj));
while(!index("ynaq ", (c = readchar())))
bell();
if(c == 'q') return;
if(c == 'n') continue;
if(c == 'a') all = 1;
}
if(obj->otyp == DEAD_COCKATRICE && !uarmg){
pline("Touching the dead cockatrice is a fatal mistake.");
pline("You turn to stone.");
killer = "cockatrice cadaver";
done("died");
}
if(obj->otyp == SCR_SCARE_MONSTER){
if(!obj->spe) obj->spe = 1;
else {
/* Note: perhaps the 1st pickup failed: you cannot
carry anymore, and so we never dropped it -
let's assume that treading on it twice also
destroys the scroll */
pline("The scroll turns to dust as you pick it up.");
delobj(obj);
continue;
}
}
wt = inv_weight() + obj->owt;
if(wt > 0) {
if(obj->quan > 1) {
/* see how many we can lift */
extern struct obj *splitobj();
int savequan = obj->quan;
int iw = inv_weight();
int qq;
for(qq = 1; qq < savequan; qq++){
obj->quan = qq;
if(iw + weight(obj) > 0)
break;
}
obj->quan = savequan;
qq--;
/* we can carry qq of them */
if(!qq) goto too_heavy;
pline("You can only carry %s of the %s lying here.",
(qq == 1) ? "one" : "some",
doname(obj));
(void) splitobj(obj, qq);
/* note: obj2 is set already, so we'll never
* encounter the other half; if it should be
* otherwise then write
* obj2 = splitobj(obj,qq);
*/
goto lift_some;
}
too_heavy:
pline("There %s %s here, but %s.",
(obj->quan == 1) ? "is" : "are",
doname(obj),
!invent ? "it is too heavy for you to lift"
: "you cannot carry anymore");
break;
}
lift_some:
if(inv_cnt() >= 52) {
pline("Your knapsack cannot accomodate anymore items.");
break;
}
if(wt > -5) pline("You have a little trouble lifting");
freeobj(obj);
if(Invisible) newsym(u.ux,u.uy);
addtobill(obj); /* sets obj->unpaid if necessary */
{ int pickquan = obj->quan;
int mergquan;
if(!Blind) obj->dknown = 1; /* this is done by prinv(),
but addinv() needs it already for merging */
obj = addinv(obj); /* might merge it with other objects */
mergquan = obj->quan;
obj->quan = pickquan; /* to fool prinv() */
prinv(obj);
obj->quan = mergquan;
}
}
}
}
/* stop running if we see something interesting */
/* turn around a corner if that is the only way we can proceed */
/* do not turn left or right twice */
lookaround(){
register x,y,i,x0,y0,m0,i0 = 9;
register int corrct = 0, noturn = 0;
register struct monst *mtmp;
#ifdef lint
/* suppress "used before set" message */
x0 = y0 = 0;
#endif lint
if(Blind || flags.run == 0) return;
if(flags.run == 1 && levl[u.ux][u.uy].typ == ROOM) return;
#ifdef QUEST
if(u.ux0 == u.ux+u.dx && u.uy0 == u.uy+u.dy) goto stop;
#endif QUEST
for(x = u.ux-1; x <= u.ux+1; x++) for(y = u.uy-1; y <= u.uy+1; y++){
if(x == u.ux && y == u.uy) continue;
if(!levl[x][y].typ) continue;
if((mtmp = m_at(x,y)) && !mtmp->mimic &&
(!mtmp->minvis || See_invisible)){
if(!mtmp->mtame || (x == u.ux+u.dx && y == u.uy+u.dy))
goto stop;
} else mtmp = 0; /* invisible M cannot influence us */
if(x == u.ux-u.dx && y == u.uy-u.dy) continue;
switch(levl[x][y].scrsym){
case '|':
case '-':
case '.':
case ' ':
break;
case '+':
if(x != u.ux && y != u.uy) break;
if(flags.run != 1) goto stop;
/* fall into next case */
case CORR_SYM:
corr:
if(flags.run == 1 || flags.run == 3) {
i = DIST(x,y,u.ux+u.dx,u.uy+u.dy);
if(i > 2) break;
if(corrct == 1 && DIST(x,y,x0,y0) != 1)
noturn = 1;
if(i < i0) {
i0 = i;
x0 = x;
y0 = y;
m0 = mtmp ? 1 : 0;
}
}
corrct++;
break;
case '^':
if(flags.run == 1) goto corr; /* if you must */
if(x == u.ux+u.dx && y == u.uy+u.dy) goto stop;
break;
default: /* e.g. objects or trap or stairs */
if(flags.run == 1) goto corr;
if(mtmp) break; /* d */
stop:
nomul(0);
return;
}
}
#ifdef QUEST
if(corrct > 0 && (flags.run == 4 || flags.run == 5)) goto stop;
#endif QUEST
if(corrct > 1 && flags.run == 2) goto stop;
if((flags.run == 1 || flags.run == 3) && !noturn && !m0 && i0 &&
(corrct == 1 || (corrct == 2 && i0 == 1))) {
/* make sure that we do not turn too far */
if(i0 == 2) {
if(u.dx == y0-u.uy && u.dy == u.ux-x0)
i = 2; /* straight turn right */
else
i = -2; /* straight turn left */
} else if(u.dx && u.dy) {
if((u.dx == u.dy && y0 == u.uy) ||
(u.dx != u.dy && y0 != u.uy))
i = -1; /* half turn left */
else
i = 1; /* half turn right */
} else {
if((x0-u.ux == y0-u.uy && !u.dy) ||
(x0-u.ux != y0-u.uy && u.dy))
i = 1; /* half turn right */
else
i = -1; /* half turn left */
}
i += u.last_str_turn;
if(i <= 2 && i >= -2) {
u.last_str_turn = i;
u.dx = x0-u.ux, u.dy = y0-u.uy;
}
}
}
/* something like lookaround, but we are not running */
/* react only to monsters that might hit us */
monster_nearby() {
register int x,y;
register struct monst *mtmp;
if(!Blind)
for(x = u.ux-1; x <= u.ux+1; x++) for(y = u.uy-1; y <= u.uy+1; y++){
if(x == u.ux && y == u.uy) continue;
if((mtmp = m_at(x,y)) && !mtmp->mimic && !mtmp->mtame &&
!mtmp->mpeaceful && !index("Ea", mtmp->data->mlet) &&
!mtmp->mfroz && !mtmp->msleep && /* aplvax!jcn */
(!mtmp->minvis || See_invisible))
return(1);
}
return(0);
}
#ifdef QUEST
cansee(x,y) xchar x,y; {
register int dx,dy,adx,ady,sdx,sdy,dmax,d;
if(Blind) return(0);
if(!isok(x,y)) return(0);
d = dist(x,y);
if(d < 3) return(1);
if(d > u.uhorizon*u.uhorizon) return(0);
if(!levl[x][y].lit)
return(0);
dx = x - u.ux; adx = abs(dx); sdx = sgn(dx);
dy = y - u.uy; ady = abs(dy); sdy = sgn(dy);
if(dx == 0 || dy == 0 || adx == ady){
dmax = (dx == 0) ? ady : adx;
for(d = 1; d <= dmax; d++)
if(!rroom(sdx*d,sdy*d))
return(0);
return(1);
} else if(ady > adx){
for(d = 1; d <= ady; d++){
if(!rroom(sdx*( (d*adx)/ady ), sdy*d) ||
!rroom(sdx*( (d*adx-1)/ady+1 ), sdy*d))
return(0);
}
return(1);
} else {
for(d = 1; d <= adx; d++){
if(!rroom(sdx*d, sdy*( (d*ady)/adx )) ||
!rroom(sdx*d, sdy*( (d*ady-1)/adx+1 )))
return(0);
}
return(1);
}
}
rroom(x,y) register int x,y; {
return(IS_ROOM(levl[u.ux+x][u.uy+y].typ));
}
#else
cansee(x,y) xchar x,y; {
if(Blind || u.uswallow) return(0);
if(dist(x,y) < 3) return(1);
if(levl[x][y].lit && seelx <= x && x <= seehx && seely <= y &&
y <= seehy) return(1);
return(0);
}
#endif QUEST
sgn(a) register int a; {
return((a > 0) ? 1 : (a == 0) ? 0 : -1);
}
#ifdef QUEST
setsee()
{
register x,y;
if(Blind) {
pru();
return;
}
for(y = u.uy-u.uhorizon; y <= u.uy+u.uhorizon; y++)
for(x = u.ux-u.uhorizon; x <= u.ux+u.uhorizon; x++) {
if(cansee(x,y))
prl(x,y);
}
}
#else
setsee()
{
register x,y;
if(Blind) {
pru();
return;
}
if(!levl[u.ux][u.uy].lit) {
seelx = u.ux-1;
seehx = u.ux+1;
seely = u.uy-1;
seehy = u.uy+1;
} else {
for(seelx = u.ux; levl[seelx-1][u.uy].lit; seelx--);
for(seehx = u.ux; levl[seehx+1][u.uy].lit; seehx++);
for(seely = u.uy; levl[u.ux][seely-1].lit; seely--);
for(seehy = u.uy; levl[u.ux][seehy+1].lit; seehy++);
}
for(y = seely; y <= seehy; y++)
for(x = seelx; x <= seehx; x++) {
prl(x,y);
}
if(!levl[u.ux][u.uy].lit) seehx = 0; /* seems necessary elsewhere */
else {
if(seely == u.uy) for(x = u.ux-1; x <= u.ux+1; x++) prl(x,seely-1);
if(seehy == u.uy) for(x = u.ux-1; x <= u.ux+1; x++) prl(x,seehy+1);
if(seelx == u.ux) for(y = u.uy-1; y <= u.uy+1; y++) prl(seelx-1,y);
if(seehx == u.ux) for(y = u.uy-1; y <= u.uy+1; y++) prl(seehx+1,y);
}
}
#endif QUEST
nomul(nval)
register nval;
{
if(multi < 0) return;
multi = nval;
flags.mv = flags.run = 0;
}
abon()
{
if(u.ustr == 3) return(-3);
else if(u.ustr < 6) return(-2);
else if(u.ustr < 8) return(-1);
else if(u.ustr < 17) return(0);
else if(u.ustr < 69) return(1); /* up to 18/50 */
else if(u.ustr < 118) return(2);
else return(3);
}
dbon()
{
if(u.ustr < 6) return(-1);
else if(u.ustr < 16) return(0);
else if(u.ustr < 18) return(1);
else if(u.ustr == 18) return(2); /* up to 18 */
else if(u.ustr < 94) return(3); /* up to 18/75 */
else if(u.ustr < 109) return(4); /* up to 18/90 */
else if(u.ustr < 118) return(5); /* up to 18/99 */
else return(6);
}
losestr(num) /* may kill you; cause may be poison or monster like 'A' */
register num;
{
u.ustr -= num;
while(u.ustr < 3) {
u.ustr++;
u.uhp -= 6;
u.uhpmax -= 6;
}
flags.botl = 1;
}
losehp(n,knam)
register n;
register char *knam;
{
u.uhp -= n;
if(u.uhp > u.uhpmax)
u.uhpmax = u.uhp; /* perhaps n was negative */
flags.botl = 1;
if(u.uhp < 1) {
killer = knam; /* the thing that killed you */
done("died");
}
}
losehp_m(n,mtmp)
register n;
register struct monst *mtmp;
{
u.uhp -= n;
flags.botl = 1;
if(u.uhp < 1)
done_in_by(mtmp);
}
losexp() /* hit by V or W */
{
register num;
extern long newuexp();
if(u.ulevel > 1)
pline("Goodbye level %u.", u.ulevel--);
else
u.uhp = -1;
num = rnd(10);
u.uhp -= num;
u.uhpmax -= num;
u.uexp = newuexp();
flags.botl = 1;
}
inv_weight(){
register struct obj *otmp = invent;
register int wt = (u.ugold + 500)/1000;
register int carrcap;
if(Levitation) /* pugh@cornell */
carrcap = MAX_CARR_CAP;
else {
carrcap = 5*(((u.ustr > 18) ? 20 : u.ustr) + u.ulevel);
if(carrcap > MAX_CARR_CAP) carrcap = MAX_CARR_CAP;
if(Wounded_legs & LEFT_SIDE) carrcap -= 10;
if(Wounded_legs & RIGHT_SIDE) carrcap -= 10;
}
while(otmp){
wt += otmp->owt;
otmp = otmp->nobj;
}
return(wt - carrcap);
}
inv_cnt(){
register struct obj *otmp = invent;
register int ct = 0;
while(otmp){
ct++;
otmp = otmp->nobj;
}
return(ct);
}
long
newuexp()
{
return(10*(1L << (u.ulevel-1)));
}
Continuous source code history from original PDP-7 UNIX to FreeBSD 2, the first fully unencumbered FreeBSD release.