/* $NetBSD: hack.zap.c,v 1.10 2021/05/02 12:50:44 rillig Exp $ */
/*
* Copyright (c) 1985, Stichting Centrum voor Wiskunde en Informatica,
* Amsterdam
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* - 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.
*
* - Neither the name of the Stichting Centrum voor Wiskunde en
* Informatica, 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 COPYRIGHT HOLDERS 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 COPYRIGHT OWNER
* 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.
*/
/*
* Copyright (c) 1982 Jay Fenlason <hack@gnu.org>
* 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. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED ``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 AUTHOR 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.
*/
#include <sys/cdefs.h>
#ifndef lint
__RCSID("$NetBSD: hack.zap.c,v 1.10 2021/05/02 12:50:44 rillig Exp $");
#endif /* not lint */
#include "hack.h"
#include "extern.h"
static const char *const fl[] = {
"magic missile",
"bolt of fire",
"sleep ray",
"bolt of cold",
"death ray"
};
static void bhitm(struct monst *, struct obj *);
static int bhito(struct obj *, struct obj *);
static char dirlet(int, int);
static int zhit(struct monst *, int);
static int revive(struct obj *);
static void rloco(struct obj *);
static void burn_scrolls(void);
/* Routines for IMMEDIATE wands. */
/* bhitm: monster mtmp was hit by the effect of wand otmp */
static void
bhitm(struct monst *mtmp, struct obj *otmp)
{
wakeup(mtmp);
switch (otmp->otyp) {
case WAN_STRIKING:
if (u.uswallow || rnd(20) < 10 + mtmp->data->ac) {
int tmp = d(2, 12);
hit("wand", mtmp, exclam(tmp));
mtmp->mhp -= tmp;
if (mtmp->mhp < 1)
killed(mtmp);
} else
miss("wand", mtmp);
break;
case WAN_SLOW_MONSTER:
mtmp->mspeed = MSLOW;
break;
case WAN_SPEED_MONSTER:
mtmp->mspeed = MFAST;
break;
case WAN_UNDEAD_TURNING:
if (strchr(UNDEAD, mtmp->data->mlet)) {
mtmp->mhp -= rnd(8);
if (mtmp->mhp < 1)
killed(mtmp);
else
mtmp->mflee = 1;
}
break;
case WAN_POLYMORPH:
if (newcham(mtmp, &mons[rn2(CMNUM)]))
objects[otmp->otyp].oc_name_known = 1;
break;
case WAN_CANCELLATION:
mtmp->mcan = 1;
break;
case WAN_TELEPORTATION:
rloc(mtmp);
break;
case WAN_MAKE_INVISIBLE:
mtmp->minvis = 1;
break;
#ifdef WAN_PROBING
case WAN_PROBING:
mstatusline(mtmp);
break;
#endif /* WAN_PROBING */
default:
impossible("What an interesting wand (%u)", otmp->otyp);
}
}
/*
* object obj was hit by the effect of wand otmp
* returns TRUE if sth was done
*/
static int
bhito(struct obj *obj, struct obj *otmp)
{
int res = TRUE;
if (obj == uball || obj == uchain)
res = FALSE;
else
switch (otmp->otyp) {
case WAN_POLYMORPH:
/*
* preserve symbol and quantity, but turn rocks into
* gems
*/
mkobj_at((obj->otyp == ROCK || obj->otyp == ENORMOUS_ROCK)
? GEM_SYM : obj->olet,
obj->ox, obj->oy)->quan = obj->quan;
delobj(obj);
break;
case WAN_STRIKING:
if (obj->otyp == ENORMOUS_ROCK)
fracture_rock(obj);
else
res = FALSE;
break;
case WAN_CANCELLATION:
if (obj->spe && obj->olet != AMULET_SYM) {
obj->known = 0;
obj->spe = 0;
}
break;
case WAN_TELEPORTATION:
rloco(obj);
break;
case WAN_MAKE_INVISIBLE:
obj->oinvis = 1;
break;
case WAN_UNDEAD_TURNING:
res = revive(obj);
break;
case WAN_SLOW_MONSTER: /* no effect on objects */
case WAN_SPEED_MONSTER:
#ifdef WAN_PROBING
case WAN_PROBING:
#endif /* WAN_PROBING */
res = FALSE;
break;
default:
impossible("What an interesting wand (%u)", otmp->otyp);
}
return (res);
}
int
dozap(void)
{
struct obj *obj;
xchar zx, zy;
obj = getobj("/", "zap");
if (!obj)
return (0);
if (obj->spe < 0 || (obj->spe == 0 && rn2(121))) {
pline("Nothing Happens.");
return (1);
}
if (obj->spe == 0)
pline("You wrest one more spell from the worn-out wand.");
if (!(objects[obj->otyp].bits & NODIR) && !getdir(1))
return (1); /* make him pay for knowing !NODIR */
obj->spe--;
if (objects[obj->otyp].bits & IMMEDIATE) {
if (u.uswallow)
bhitm(u.ustuck, obj);
else if (u.dz) {
if (u.dz > 0) {
struct obj *otmp = o_at(u.ux, u.uy);
if (otmp)
(void) bhito(otmp, obj);
}
} else
(void) bhit(u.dx, u.dy, rn1(8, 6), 0, bhitm, bhito, obj);
} else {
switch (obj->otyp) {
case WAN_LIGHT:
litroom(TRUE);
break;
case WAN_SECRET_DOOR_DETECTION:
if (!findit())
return (1);
break;
case WAN_CREATE_MONSTER:
{
int cnt = 1;
if (!rn2(23))
cnt += rn2(7) + 1;
while (cnt--)
(void) makemon((struct permonst *) 0, u.ux, u.uy);
}
break;
case WAN_WISHING:
{
char buf[BUFSZ];
struct obj *otmp;
if (u.uluck + rn2(5) < 0) {
pline("Unfortunately, nothing happens.");
break;
}
pline("You may wish for an object. What do you want? ");
getlin(buf);
if (buf[0] == '\033')
buf[0] = 0;
otmp = readobjnam(buf);
otmp = addinv(otmp);
prinv(otmp);
break;
}
case WAN_DIGGING:
/*
* Original effect (approximately): from CORR: dig
* until we pierce a wall from ROOM: piece wall and
* dig until we reach an ACCESSIBLE place. Currently:
* dig for digdepth positions; also down on request
* of Lennart Augustsson.
*/
{
struct rm *room;
int digdepth;
if (u.uswallow) {
struct monst *mtmp = u.ustuck;
pline("You pierce %s's stomach wall!",
monnam(mtmp));
mtmp->mhp = 1; /* almost dead */
unstuck(mtmp);
mnexto(mtmp);
break;
}
if (u.dz) {
if (u.dz < 0) {
pline("You loosen a rock from the ceiling.");
pline("It falls on your head!");
losehp(1, "falling rock");
mksobj_at(ROCK, u.ux, u.uy);
fobj->quan = 1;
stackobj(fobj);
if (Invisible)
newsym(u.ux, u.uy);
} else {
dighole();
}
break;
}
zx = u.ux + u.dx;
zy = u.uy + u.dy;
digdepth = 8 + rn2(18);
Tmp_at(-1, '*'); /* open call */
while (--digdepth >= 0) {
if (!isok(zx, zy))
break;
room = &levl[zx][zy];
Tmp_at(zx, zy);
if (!xdnstair) {
if (zx < 3 || zx > COLNO - 3 ||
zy < 3 || zy > ROWNO - 3)
break;
if (room->typ == HWALL ||
room->typ == VWALL) {
room->typ = ROOM;
break;
}
} else if (room->typ == HWALL || room->typ == VWALL ||
room->typ == SDOOR || room->typ == LDOOR) {
room->typ = DOOR;
digdepth -= 2;
} else if (room->typ == SCORR || !room->typ) {
room->typ = CORR;
digdepth--;
}
mnewsym(zx, zy);
zx += u.dx;
zy += u.dy;
}
mnewsym(zx, zy); /* not always necessary */
Tmp_at(-1, -1); /* closing call */
break;
}
default:
buzz((int) obj->otyp - WAN_MAGIC_MISSILE,
u.ux, u.uy, u.dx, u.dy);
break;
}
if (!objects[obj->otyp].oc_name_known) {
objects[obj->otyp].oc_name_known = 1;
more_experienced(0, 10);
}
}
return (1);
}
const char *
exclam(int force)
{
/* force == 0 occurs e.g. with sleep ray */
/*
* note that large force is usual with wands so that !! would require
* information about hand/weapon/wand
*/
return ((force < 0) ? "?" : (force <= 4) ? "." : "!");
}
void
hit(const char *str, struct monst *mtmp, const char *force)
{
/* force is usually either "." or "!" */
if (!cansee(mtmp->mx, mtmp->my))
pline("The %s hits it.", str);
else
pline("The %s hits %s%s", str, monnam(mtmp), force);
}
void
miss(const char *str, struct monst *mtmp)
{
if (!cansee(mtmp->mx, mtmp->my))
pline("The %s misses it.", str);
else
pline("The %s misses %s.", str, monnam(mtmp));
}
/*
* bhit: called when a weapon is thrown (sym = obj->olet) or when an
* IMMEDIATE wand is zapped (sym = 0); the weapon falls down at end of range
* or when a monster is hit; the monster is returned, and bhitpos is set to
* the final position of the weapon thrown; the ray of a wand may affect
* several objects and monsters on its path - for each of these an argument
* function is called.
*/
/* check !u.uswallow before calling bhit() */
struct monst *
bhit(int ddx, int ddy, int range, /* direction and range */
int sym, /* symbol displayed on path */
/* fns called when mon/obj hit */
void (*fhitm)(struct monst *, struct obj *),
int (*fhito)(struct obj *, struct obj *),
struct obj *obj) /* 2nd arg to fhitm/fhito */
{
struct monst *mtmp;
struct obj *otmp;
int typ;
bhitpos.x = u.ux;
bhitpos.y = u.uy;
if (sym)
tmp_at(-1, sym);/* open call */
while (range-- > 0) {
bhitpos.x += ddx;
bhitpos.y += ddy;
typ = levl[bhitpos.x][bhitpos.y].typ;
if ((mtmp = m_at(bhitpos.x, bhitpos.y)) != NULL) {
if (sym) {
tmp_at(-1, -1); /* close call */
return (mtmp);
}
(*fhitm) (mtmp, obj);
range -= 3;
}
if (fhito && (otmp = o_at(bhitpos.x, bhitpos.y))) {
if ((*fhito) (otmp, obj))
range--;
}
if (!ZAP_POS(typ)) {
bhitpos.x -= ddx;
bhitpos.y -= ddy;
break;
}
if (sym)
tmp_at(bhitpos.x, bhitpos.y);
}
/* leave last symbol unless in a pool */
if (sym)
tmp_at(-1, (levl[bhitpos.x][bhitpos.y].typ == POOL) ? -1 : 0);
return (0);
}
struct monst *
boomhit(int dx, int dy)
{
int i, ct;
struct monst *mtmp;
char sym = ')';
bhitpos.x = u.ux;
bhitpos.y = u.uy;
for (i = 0; i < 8; i++)
if (xdir[i] == dx && ydir[i] == dy)
break;
tmp_at(-1, sym); /* open call */
for (ct = 0; ct < 10; ct++) {
if (i == 8)
i = 0;
sym = ')' + '(' - sym;
tmp_at(-2, sym);/* change let call */
dx = xdir[i];
dy = ydir[i];
bhitpos.x += dx;
bhitpos.y += dy;
if ((mtmp = m_at(bhitpos.x, bhitpos.y)) != NULL) {
tmp_at(-1, -1);
return (mtmp);
}
if (!ZAP_POS(levl[bhitpos.x][bhitpos.y].typ)) {
bhitpos.x -= dx;
bhitpos.y -= dy;
break;
}
if (bhitpos.x == u.ux && bhitpos.y == u.uy) { /* ct == 9 */
if (rn2(20) >= 10 + u.ulevel) { /* we hit ourselves */
(void) thitu(10, rnd(10), "boomerang");
break;
} else {/* we catch it */
tmp_at(-1, -1);
pline("Skillfully, you catch the boomerang.");
return (&youmonst);
}
}
tmp_at(bhitpos.x, bhitpos.y);
if (ct % 5 != 0)
i++;
}
tmp_at(-1, -1); /* do not leave last symbol */
return (0);
}
static char
dirlet(int dx, int dy)
{
return
(dx == dy) ? '\\' : (dx && dy) ? '/' : dx ? '-' : '|';
}
/* type == -1: monster spitting fire at you */
/* type == -1,-2,-3: bolts sent out by wizard */
/* called with dx = dy = 0 with vertical bolts */
void
buzz(int type, xchar sx, xchar sy, int dx, int dy)
{
int abstype = abs(type);
const char *fltxt = (type == -1) ? "blaze of fire" : fl[abstype];
struct rm *lev;
xchar range;
struct monst *mon;
if (u.uswallow) {
int tmp;
if (type < 0)
return;
tmp = zhit(u.ustuck, type);
pline("The %s rips into %s%s",
fltxt, monnam(u.ustuck), exclam(tmp));
return;
}
if (type < 0)
pru();
range = rn1(7, 7);
Tmp_at(-1, dirlet(dx, dy)); /* open call */
while (range-- > 0) {
sx += dx;
sy += dy;
if ((lev = &levl[sx][sy])->typ)
Tmp_at(sx, sy);
else {
int bounce = 0;
if (cansee(sx - dx, sy - dy))
pline("The %s bounces!", fltxt);
if (ZAP_POS(levl[sx][sy - dy].typ))
bounce = 1;
if (ZAP_POS(levl[sx - dx][sy].typ)) {
if (!bounce || rn2(2))
bounce = 2;
}
switch (bounce) {
case 0:
dx = -dx;
dy = -dy;
continue;
case 1:
dy = -dy;
sx -= dx;
break;
case 2:
dx = -dx;
sy -= dy;
break;
}
Tmp_at(-2, dirlet(dx, dy));
continue;
}
if (lev->typ == POOL && abstype == 1 /* fire */ ) {
range -= 3;
lev->typ = ROOM;
if (cansee(sx, sy)) {
mnewsym(sx, sy);
pline("The water evaporates.");
} else
pline("You hear a hissing sound.");
}
if ((mon = m_at(sx, sy)) &&
(type != -1 || mon->data->mlet != 'D')) {
wakeup(mon);
if (rnd(20) < 18 + mon->data->ac) {
int tmp = zhit(mon, abstype);
if (mon->mhp < 1) {
if (type < 0) {
if (cansee(mon->mx, mon->my))
pline("%s is killed by the %s!",
Monnam(mon), fltxt);
mondied(mon);
} else
killed(mon);
} else
hit(fltxt, mon, exclam(tmp));
range -= 2;
} else
miss(fltxt, mon);
} else if (sx == u.ux && sy == u.uy) {
nomul(0);
if (rnd(20) < 18 + u.uac) {
int dam = 0;
range -= 2;
pline("The %s hits you!", fltxt);
switch (abstype) {
case 0:
dam = d(2, 6);
break;
case 1:
if (Fire_resistance)
pline("You don't feel hot!");
else
dam = d(6, 6);
if (!rn2(3))
burn_scrolls();
break;
case 2:
nomul(-rnd(25)); /* sleep ray */
break;
case 3:
if (Cold_resistance)
pline("You don't feel cold!");
else
dam = d(6, 6);
break;
case 4:
u.uhp = -1;
}
losehp(dam, fltxt);
} else
pline("The %s whizzes by you!", fltxt);
stop_occupation();
}
if (!ZAP_POS(lev->typ)) {
int bounce = 0, rmn;
if (cansee(sx, sy))
pline("The %s bounces!", fltxt);
range--;
if (!dx || !dy || !rn2(20)) {
dx = -dx;
dy = -dy;
} else {
if (ZAP_POS(rmn = levl[sx][sy - dy].typ) &&
(IS_ROOM(rmn) || ZAP_POS(levl[sx + dx][sy - dy].typ)))
bounce = 1;
if (ZAP_POS(rmn = levl[sx - dx][sy].typ) &&
(IS_ROOM(rmn) || ZAP_POS(levl[sx - dx][sy + dy].typ)))
if (!bounce || rn2(2))
bounce = 2;
switch (bounce) {
case 0:
dy = -dy;
dx = -dx;
break;
case 1:
dy = -dy;
break;
case 2:
dx = -dx;
break;
}
Tmp_at(-2, dirlet(dx, dy));
}
}
}
Tmp_at(-1, -1);
}
static int
zhit(struct monst *mon, int type) /* returns damage to mon */
{
int tmp = 0;
switch (type) {
case 0: /* magic missile */
tmp = d(2, 6);
break;
case -1: /* Dragon blazing fire */
case 1: /* fire */
if (strchr("Dg", mon->data->mlet))
break;
tmp = d(6, 6);
if (strchr("YF", mon->data->mlet))
tmp += 7;
break;
case 2: /* sleep */
mon->mfroz = 1;
break;
case 3: /* cold */
if (strchr("YFgf", mon->data->mlet))
break;
tmp = d(6, 6);
if (mon->data->mlet == 'D')
tmp += 7;
break;
case 4: /* death */
if (strchr(UNDEAD, mon->data->mlet))
break;
tmp = mon->mhp + 1;
break;
}
mon->mhp -= tmp;
return (tmp);
}
#define CORPSE_I_TO_C(otyp) (char) ((otyp >= DEAD_ACID_BLOB)\
? 'a' + (otyp - DEAD_ACID_BLOB)\
: '@' + (otyp - DEAD_HUMAN))
static int
revive(struct obj *obj)
{
struct monst *mtmp = NULL;
if (obj->olet == FOOD_SYM && obj->otyp > CORPSE) {
/* do not (yet) revive shopkeepers */
/*
* Note: this might conceivably produce two monsters at the
* same position - strange, but harmless
*/
mtmp = mkmon_at(CORPSE_I_TO_C(obj->otyp), obj->ox, obj->oy);
delobj(obj);
}
return (!!mtmp); /* TRUE if some monster created */
}
static void
rloco(struct obj *obj)
{
int tx, ty, otx, oty;
otx = obj->ox;
oty = obj->oy;
do {
tx = rn1(COLNO - 3, 2);
ty = rn2(ROWNO);
} while (!goodpos(tx, ty));
obj->ox = tx;
obj->oy = ty;
if (cansee(otx, oty))
newsym(otx, oty);
}
/* fractured by pick-axe or wand of striking */
/* no texts here! */
void
fracture_rock(struct obj *obj)
{
/* unpobj(obj); */
obj->otyp = ROCK;
obj->quan = 7 + rn2(60);
obj->owt = weight(obj);
obj->olet = WEAPON_SYM;
if (cansee(obj->ox, obj->oy))
prl(obj->ox, obj->oy);
}
static void
burn_scrolls(void)
{
struct obj *obj, *obj2;
int cnt = 0;
for (obj = invent; obj; obj = obj2) {
obj2 = obj->nobj;
if (obj->olet == SCROLL_SYM) {
cnt++;
useup(obj);
}
}
if (cnt > 1) {
pline("Your scrolls catch fire!");
losehp(cnt, "burning scrolls");
} else if (cnt) {
pline("Your scroll catches fire!");
losehp(1, "burning scroll");
}
}