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read.c
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read.c
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/* NetHack 3.6 read.c $NHDT-Date: 1561485713 2019/06/25 18:01:53 $ $NHDT-Branch: NetHack-3.6 $:$NHDT-Revision: 1.172 $ */
/* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
/*-Copyright (c) Robert Patrick Rankin, 2012. */
/* NetHack may be freely redistributed. See license for details. */
#include "hack.h"
#define Your_Own_Role(mndx) \
((mndx) == urole.malenum \
|| (urole.femalenum != NON_PM && (mndx) == urole.femalenum))
#define Your_Own_Race(mndx) \
((mndx) == urace.malenum \
|| (urace.femalenum != NON_PM && (mndx) == urace.femalenum))
boolean known;
static NEARDATA const char readable[] = { ALL_CLASSES, SCROLL_CLASS,
SPBOOK_CLASS, 0 };
static const char all_count[] = { ALLOW_COUNT, ALL_CLASSES, 0 };
STATIC_DCL boolean FDECL(learnscrolltyp, (SHORT_P));
STATIC_DCL char *FDECL(erode_obj_text, (struct obj *, char *));
STATIC_DCL char *FDECL(apron_text, (struct obj *, char *buf));
STATIC_DCL void FDECL(stripspe, (struct obj *));
STATIC_DCL void FDECL(p_glow1, (struct obj *));
STATIC_DCL void FDECL(p_glow2, (struct obj *, const char *));
STATIC_DCL void FDECL(forget_single_object, (int));
#if 0 /* not used */
STATIC_DCL void FDECL(forget_objclass, (int));
#endif
STATIC_DCL void FDECL(randomize, (int *, int));
STATIC_DCL void FDECL(forget, (int));
STATIC_DCL int FDECL(maybe_tame, (struct monst *, struct obj *));
STATIC_DCL boolean FDECL(get_valid_stinking_cloud_pos, (int, int));
STATIC_DCL boolean FDECL(is_valid_stinking_cloud_pos, (int, int, BOOLEAN_P));
STATIC_PTR void FDECL(display_stinking_cloud_positions, (int));
STATIC_PTR void FDECL(set_lit, (int, int, genericptr));
STATIC_DCL void NDECL(do_class_genocide);
STATIC_OVL boolean
learnscrolltyp(scrolltyp)
short scrolltyp;
{
if (!objects[scrolltyp].oc_name_known) {
makeknown(scrolltyp);
more_experienced(0, 10);
return TRUE;
} else
return FALSE;
}
/* also called from teleport.c for scroll of teleportation */
void
learnscroll(sobj)
struct obj *sobj;
{
/* it's implied that sobj->dknown is set;
we couldn't be reading this scroll otherwise */
if (sobj->oclass != SPBOOK_CLASS)
(void) learnscrolltyp(sobj->otyp);
}
STATIC_OVL char *
erode_obj_text(otmp, buf)
struct obj *otmp;
char *buf;
{
int erosion = greatest_erosion(otmp);
if (erosion)
wipeout_text(buf, (int) (strlen(buf) * erosion / (2 * MAX_ERODE)),
otmp->o_id ^ (unsigned) ubirthday);
return buf;
}
char *
tshirt_text(tshirt, buf)
struct obj *tshirt;
char *buf;
{
static const char *shirt_msgs[] = {
/* Scott Bigham */
"I explored the Dungeons of Doom and all I got was this lousy T-shirt!",
"Is that Mjollnir in your pocket or are you just happy to see me?",
"It's not the size of your sword, it's how #enhance'd you are with it.",
"Madame Elvira's House O' Succubi Lifetime Customer",
"Madame Elvira's House O' Succubi Employee of the Month",
"Ludios Vault Guards Do It In Small, Dark Rooms",
"Yendor Military Soldiers Do It In Large Groups",
"I survived Yendor Military Boot Camp",
"Ludios Accounting School Intra-Mural Lacrosse Team",
"Oracle(TM) Fountains 10th Annual Wet T-Shirt Contest",
"Hey, black dragon! Disintegrate THIS!",
"I'm With Stupid -->",
"Don't blame me, I voted for Izchak!",
"Don't Panic", /* HHGTTG */
"Furinkan High School Athletic Dept.", /* Ranma 1/2 */
"Hel-LOOO, Nurse!", /* Animaniacs */
"=^.^=",
"100% goblin hair - do not wash",
"Aberzombie and Fitch",
"cK -- Cockatrice touches the Kop",
"Don't ask me, I only adventure here",
"Down with pants!",
"d, your dog or a killer?",
"FREE PUG AND NEWT!",
"Go team ant!",
"Got newt?",
"Hello, my darlings!", /* Charlie Drake */
"Hey! Nymphs! Steal This T-Shirt!",
"I <3 Dungeon of Doom",
"I <3 Maud",
"I am a Valkyrie. If you see me running, try to keep up.",
"I am not a pack rat - I am a collector",
"I bounced off a rubber tree", /* Monkey Island */
"Plunder Island Brimstone Beach Club", /* Monkey Island */
"If you can read this, I can hit you with my polearm",
"I'm confused!",
"I scored with the princess",
"I want to live forever or die in the attempt.",
"Lichen Park",
"LOST IN THOUGHT - please send search party",
"Meat is Mordor",
"Minetown Better Business Bureau",
"Minetown Watch",
"Ms. Palm's House of Negotiable Affection -- A Very Reputable House Of Disrepute",
"Protection Racketeer",
"Real men love Crom",
"Somebody stole my Mojo!",
"The Hellhound Gang",
"The Werewolves",
"They Might Be Storm Giants",
"Weapons don't kill people, I kill people",
"White Zombie",
"You're killing me!",
"Anhur State University - Home of the Fighting Fire Ants!",
"FREE HUGS",
"Serial Ascender",
"Real men are valkyries",
"Young Men's Cavedigging Association",
"Occupy Fort Ludios",
"I couldn't afford this T-shirt so I stole it!",
"Mind flayers suck",
"I'm not wearing any pants",
"Down with the living!",
"Pudding farmer",
"Vegetarian",
"Hello, I'm War!",
"It is better to light a candle than to curse the darkness",
"It is easier to curse the darkness than to light a candle",
/* expanded "rock--paper--scissors" featured in TV show "Big Bang
Theory" although they didn't create it (and an actual T-shirt
with pentagonal diagram showing which choices defeat which) */
"rock--paper--scissors--lizard--Spock!",
/* "All men must die -- all men must serve" challange and response
from book series _A_Song_of_Ice_and_Fire_ by George R.R. Martin,
TV show "Game of Thrones" (probably an actual T-shirt too...) */
"/Valar morghulis/ -- /Valar dohaeris/",
};
Strcpy(buf, shirt_msgs[tshirt->o_id % SIZE(shirt_msgs)]);
return erode_obj_text(tshirt, buf);
}
STATIC_OVL char *
apron_text(apron, buf)
struct obj *apron;
char *buf;
{
static const char *apron_msgs[] = {
"Kiss the cook",
"I'm making SCIENCE!",
"Don't mess with the chef",
"Don't make me poison you",
"Gehennom's Kitchen",
"Rat: The other white meat",
"If you can't stand the heat, get out of Gehennom!",
"If we weren't meant to eat animals, why are they made out of meat?",
"If you don't like the food, I'll stab you",
};
Strcpy(buf, apron_msgs[apron->o_id % SIZE(apron_msgs)]);
return erode_obj_text(apron, buf);
}
int
doread()
{
register struct obj *scroll;
boolean confused, nodisappear;
known = FALSE;
if (check_capacity((char *) 0))
return 0;
scroll = getobj(readable, "read");
if (!scroll)
return 0;
/* outrumor has its own blindness check */
if (scroll->otyp == FORTUNE_COOKIE) {
if (flags.verbose)
You("break up the cookie and throw away the pieces.");
outrumor(bcsign(scroll), BY_COOKIE);
if (!Blind)
u.uconduct.literate++;
useup(scroll);
return 1;
} else if (scroll->otyp == T_SHIRT || scroll->otyp == ALCHEMY_SMOCK) {
char buf[BUFSZ], *mesg;
const char *endpunct;
if (Blind) {
You_cant("feel any Braille writing.");
return 0;
}
/* can't read shirt worn under suit (under cloak is ok though) */
if (scroll->otyp == T_SHIRT && uarm && scroll == uarmu) {
pline("%s shirt is obscured by %s%s.",
scroll->unpaid ? "That" : "Your", shk_your(buf, uarm),
suit_simple_name(uarm));
return 0;
}
u.uconduct.literate++;
/* populate 'buf[]' */
mesg = (scroll->otyp == T_SHIRT) ? tshirt_text(scroll, buf)
: apron_text(scroll, buf);
endpunct = "";
if (flags.verbose) {
int ln = (int) strlen(mesg);
/* we will be displaying a sentence; need ending punctuation */
if (ln > 0 && !index(".!?", mesg[ln - 1]))
endpunct = ".";
pline("It reads:");
}
pline("\"%s\"%s", mesg, endpunct);
return 1;
} else if (scroll->otyp == CREDIT_CARD) {
static const char *card_msgs[] = {
"Leprechaun Gold Tru$t - Shamrock Card",
"Magic Memory Vault Charge Card",
"Larn National Bank", /* Larn */
"First Bank of Omega", /* Omega */
"Bank of Zork - Frobozz Magic Card", /* Zork */
"Ankh-Morpork Merchant's Guild Barter Card",
"Ankh-Morpork Thieves' Guild Unlimited Transaction Card",
"Ransmannsby Moneylenders Association",
"Bank of Gehennom - 99% Interest Card",
"Yendorian Express - Copper Card",
"Yendorian Express - Silver Card",
"Yendorian Express - Gold Card",
"Yendorian Express - Mithril Card",
"Yendorian Express - Platinum Card", /* must be last */
};
if (Blind) {
You("feel the embossed numbers:");
} else {
if (flags.verbose)
pline("It reads:");
pline("\"%s\"",
scroll->oartifact
? card_msgs[SIZE(card_msgs) - 1]
: card_msgs[scroll->o_id % (SIZE(card_msgs) - 1)]);
}
/* Make a credit card number */
pline("\"%d0%d %ld%d1 0%d%d0\"%s",
(((int) scroll->o_id % 89) + 10),
((int) scroll->o_id % 4),
((((long) scroll->o_id * 499L) % 899999L) + 100000L),
((int) scroll->o_id % 10),
(!((int) scroll->o_id % 3)),
(((int) scroll->o_id * 7) % 10),
(flags.verbose || Blind) ? "." : "");
u.uconduct.literate++;
return 1;
} else if (scroll->otyp == CAN_OF_GREASE) {
pline("This %s has no label.", singular(scroll, xname));
return 0;
} else if (scroll->otyp == MAGIC_MARKER) {
if (Blind) {
You_cant("feel any Braille writing.");
return 0;
}
if (flags.verbose)
pline("It reads:");
pline("\"Magic Marker(TM) Red Ink Marker Pen. Water Soluble.\"");
u.uconduct.literate++;
return 1;
} else if (scroll->oclass == COIN_CLASS) {
if (Blind)
You("feel the embossed words:");
else if (flags.verbose)
You("read:");
pline("\"1 Zorkmid. 857 GUE. In Frobs We Trust.\"");
u.uconduct.literate++;
return 1;
} else if (scroll->oartifact == ART_ORB_OF_FATE) {
if (Blind)
You("feel the engraved signature:");
else
pline("It is signed:");
pline("\"Odin.\"");
u.uconduct.literate++;
return 1;
} else if (scroll->otyp == CANDY_BAR) {
static const char *wrapper_msgs[] = {
"Apollo", /* Lost */
"Moon Crunchy", /* South Park */
"Snacky Cake", "Chocolate Nuggie", "The Small Bar",
"Crispy Yum Yum", "Nilla Crunchie", "Berry Bar",
"Choco Nummer", "Om-nom", /* Cat Macro */
"Fruity Oaty", /* Serenity */
"Wonka Bar" /* Charlie and the Chocolate Factory */
};
if (Blind) {
You_cant("feel any Braille writing.");
return 0;
}
pline("The wrapper reads: \"%s\".",
wrapper_msgs[scroll->o_id % SIZE(wrapper_msgs)]);
u.uconduct.literate++;
return 1;
} else if (scroll->oclass != SCROLL_CLASS
&& scroll->oclass != SPBOOK_CLASS) {
pline(silly_thing_to, "read");
return 0;
} else if (Blind && (scroll->otyp != SPE_BOOK_OF_THE_DEAD)) {
const char *what = 0;
if (scroll->oclass == SPBOOK_CLASS)
what = "mystic runes";
else if (!scroll->dknown)
what = "formula on the scroll";
if (what) {
pline("Being blind, you cannot read the %s.", what);
return 0;
}
}
confused = (Confusion != 0);
#ifdef MAIL
if (scroll->otyp == SCR_MAIL) {
confused = FALSE; /* override */
/* reading mail is a convenience for the player and takes
place outside the game, so shouldn't affect gameplay;
on the other hand, it starts by explicitly making the
hero actively read something, which is pretty hard
to simply ignore; as a compromise, if the player has
maintained illiterate conduct so far, and this mail
scroll didn't come from bones, ask for confirmation */
if (!u.uconduct.literate) {
if (!scroll->spe && yn(
"Reading mail will violate \"illiterate\" conduct. Read anyway?"
) != 'y')
return 0;
}
}
#endif
/* Actions required to win the game aren't counted towards conduct */
/* Novel conduct is handled in read_tribute so exclude it too*/
if (scroll->otyp != SPE_BOOK_OF_THE_DEAD
&& scroll->otyp != SPE_BLANK_PAPER && scroll->otyp != SCR_BLANK_PAPER
&& scroll->otyp != SPE_NOVEL)
u.uconduct.literate++;
if (scroll->oclass == SPBOOK_CLASS) {
return study_book(scroll);
}
scroll->in_use = TRUE; /* scroll, not spellbook, now being read */
if (scroll->otyp != SCR_BLANK_PAPER) {
boolean silently = !can_chant(&youmonst);
/* a few scroll feedback messages describe something happening
to the scroll itself, so avoid "it disappears" for those */
nodisappear = (scroll->otyp == SCR_FIRE
|| (scroll->otyp == SCR_REMOVE_CURSE
&& scroll->cursed));
if (Blind)
pline(nodisappear
? "You %s the formula on the scroll."
: "As you %s the formula on it, the scroll disappears.",
silently ? "cogitate" : "pronounce");
else
pline(nodisappear ? "You read the scroll."
: "As you read the scroll, it disappears.");
if (confused) {
if (Hallucination)
pline("Being so trippy, you screw up...");
else
pline("Being confused, you %s the magic words...",
silently ? "misunderstand" : "mispronounce");
}
}
if (!seffects(scroll)) {
if (!objects[scroll->otyp].oc_name_known) {
if (known)
learnscroll(scroll);
else if (!objects[scroll->otyp].oc_uname)
docall(scroll);
}
scroll->in_use = FALSE;
if (scroll->otyp != SCR_BLANK_PAPER)
useup(scroll);
}
return 1;
}
STATIC_OVL void
stripspe(obj)
register struct obj *obj;
{
if (obj->blessed || obj->spe <= 0) {
pline1(nothing_happens);
} else {
/* order matters: message, shop handling, actual transformation */
pline("%s briefly.", Yobjnam2(obj, "vibrate"));
costly_alteration(obj, COST_UNCHRG);
obj->spe = 0;
if (obj->otyp == OIL_LAMP || obj->otyp == BRASS_LANTERN)
obj->age = 0;
}
}
STATIC_OVL void
p_glow1(otmp)
register struct obj *otmp;
{
pline("%s briefly.", Yobjnam2(otmp, Blind ? "vibrate" : "glow"));
}
STATIC_OVL void
p_glow2(otmp, color)
register struct obj *otmp;
register const char *color;
{
pline("%s%s%s for a moment.", Yobjnam2(otmp, Blind ? "vibrate" : "glow"),
Blind ? "" : " ", Blind ? "" : hcolor(color));
}
/* Is the object chargeable? For purposes of inventory display; it is
possible to be able to charge things for which this returns FALSE. */
boolean
is_chargeable(obj)
struct obj *obj;
{
if (obj->oclass == WAND_CLASS)
return TRUE;
/* known && !oc_name_known is possible after amnesia/mind flayer */
if (obj->oclass == RING_CLASS)
return (boolean) (objects[obj->otyp].oc_charged
&& (obj->known
|| (obj->dknown
&& objects[obj->otyp].oc_name_known)));
if (is_weptool(obj)) /* specific check before general tools */
return FALSE;
if (obj->oclass == TOOL_CLASS)
return (boolean) objects[obj->otyp].oc_charged;
return FALSE; /* why are weapons/armor considered charged anyway? */
}
/* recharge an object; curse_bless is -1 if the recharging implement
was cursed, +1 if blessed, 0 otherwise. */
void
recharge(obj, curse_bless)
struct obj *obj;
int curse_bless;
{
register int n;
boolean is_cursed, is_blessed;
is_cursed = curse_bless < 0;
is_blessed = curse_bless > 0;
if (obj->oclass == WAND_CLASS) {
int lim = (obj->otyp == WAN_WISHING)
? 3
: (objects[obj->otyp].oc_dir != NODIR) ? 8 : 15;
/* undo any prior cancellation, even when is_cursed */
if (obj->spe == -1)
obj->spe = 0;
/*
* Recharging might cause wands to explode.
* v = number of previous recharges
* v = percentage chance to explode on this attempt
* v = cumulative odds for exploding
* 0 : 0 0
* 1 : 0.29 0.29
* 2 : 2.33 2.62
* 3 : 7.87 10.28
* 4 : 18.66 27.02
* 5 : 36.44 53.62
* 6 : 62.97 82.83
* 7 : 100 100
*/
n = (int) obj->recharged;
if (n > 0 && (obj->otyp == WAN_WISHING
|| (n * n * n > rn2(7 * 7 * 7)))) { /* recharge_limit */
wand_explode(obj, rnd(lim));
return;
}
/* didn't explode, so increment the recharge count */
obj->recharged = (unsigned) (n + 1);
/* now handle the actual recharging */
if (is_cursed) {
stripspe(obj);
} else {
n = (lim == 3) ? 3 : rn1(5, lim + 1 - 5);
if (!is_blessed)
n = rnd(n);
if (obj->spe < n)
obj->spe = n;
else
obj->spe++;
if (obj->otyp == WAN_WISHING && obj->spe > 3) {
wand_explode(obj, 1);
return;
}
if (obj->spe >= lim)
p_glow2(obj, NH_BLUE);
else
p_glow1(obj);
#if 0 /*[shop price doesn't vary by charge count]*/
/* update shop bill to reflect new higher price */
if (obj->unpaid)
alter_cost(obj, 0L);
#endif
}
} else if (obj->oclass == RING_CLASS && objects[obj->otyp].oc_charged) {
/* charging does not affect ring's curse/bless status */
int s = is_blessed ? rnd(3) : is_cursed ? -rnd(2) : 1;
boolean is_on = (obj == uleft || obj == uright);
/* destruction depends on current state, not adjustment */
if (obj->spe > rn2(7) || obj->spe <= -5) {
pline("%s momentarily, then %s!", Yobjnam2(obj, "pulsate"),
otense(obj, "explode"));
if (is_on)
Ring_gone(obj);
s = rnd(3 * abs(obj->spe)); /* amount of damage */
useup(obj);
losehp(Maybe_Half_Phys(s), "exploding ring", KILLED_BY_AN);
} else {
long mask = is_on ? (obj == uleft ? LEFT_RING : RIGHT_RING) : 0L;
pline("%s spins %sclockwise for a moment.", Yname2(obj),
s < 0 ? "counter" : "");
if (s < 0)
costly_alteration(obj, COST_DECHNT);
/* cause attributes and/or properties to be updated */
if (is_on)
Ring_off(obj);
obj->spe += s; /* update the ring while it's off */
if (is_on)
setworn(obj, mask), Ring_on(obj);
/* oartifact: if a touch-sensitive artifact ring is
ever created the above will need to be revised */
/* update shop bill to reflect new higher price */
if (s > 0 && obj->unpaid)
alter_cost(obj, 0L);
}
} else if (obj->oclass == TOOL_CLASS) {
int rechrg = (int) obj->recharged;
if (objects[obj->otyp].oc_charged) {
/* tools don't have a limit, but the counter used does */
if (rechrg < 7) /* recharge_limit */
obj->recharged++;
}
switch (obj->otyp) {
case BELL_OF_OPENING:
if (is_cursed)
stripspe(obj);
else if (is_blessed)
obj->spe += rnd(3);
else
obj->spe += 1;
if (obj->spe > 5)
obj->spe = 5;
break;
case MAGIC_MARKER:
case TINNING_KIT:
case EXPENSIVE_CAMERA:
if (is_cursed)
stripspe(obj);
else if (rechrg
&& obj->otyp
== MAGIC_MARKER) { /* previously recharged */
obj->recharged = 1; /* override increment done above */
if (obj->spe < 3)
Your("marker seems permanently dried out.");
else
pline1(nothing_happens);
} else if (is_blessed) {
n = rn1(16, 15); /* 15..30 */
if (obj->spe + n <= 50)
obj->spe = 50;
else if (obj->spe + n <= 75)
obj->spe = 75;
else {
int chrg = (int) obj->spe;
if ((chrg + n) > 127)
obj->spe = 127;
else
obj->spe += n;
}
p_glow2(obj, NH_BLUE);
} else {
n = rn1(11, 10); /* 10..20 */
if (obj->spe + n <= 50)
obj->spe = 50;
else {
int chrg = (int) obj->spe;
if ((chrg + n) > 127)
obj->spe = 127;
else
obj->spe += n;
}
p_glow2(obj, NH_WHITE);
}
break;
case OIL_LAMP:
case BRASS_LANTERN:
if (is_cursed) {
stripspe(obj);
if (obj->lamplit) {
if (!Blind)
pline("%s out!", Tobjnam(obj, "go"));
end_burn(obj, TRUE);
}
} else if (is_blessed) {
obj->spe = 1;
obj->age = 1500;
p_glow2(obj, NH_BLUE);
} else {
obj->spe = 1;
obj->age += 750;
if (obj->age > 1500)
obj->age = 1500;
p_glow1(obj);
}
break;
case CRYSTAL_BALL:
if (is_cursed) {
stripspe(obj);
} else if (is_blessed) {
obj->spe = 6;
p_glow2(obj, NH_BLUE);
} else {
if (obj->spe < 5) {
obj->spe++;
p_glow1(obj);
} else
pline1(nothing_happens);
}
break;
case HORN_OF_PLENTY:
case BAG_OF_TRICKS:
case CAN_OF_GREASE:
if (is_cursed) {
stripspe(obj);
} else if (is_blessed) {
if (obj->spe <= 10)
obj->spe += rn1(10, 6);
else
obj->spe += rn1(5, 6);
if (obj->spe > 50)
obj->spe = 50;
p_glow2(obj, NH_BLUE);
} else {
obj->spe += rnd(5);
if (obj->spe > 50)
obj->spe = 50;
p_glow1(obj);
}
break;
case MAGIC_FLUTE:
case MAGIC_HARP:
case FROST_HORN:
case FIRE_HORN:
case DRUM_OF_EARTHQUAKE:
if (is_cursed) {
stripspe(obj);
} else if (is_blessed) {
obj->spe += d(2, 4);
if (obj->spe > 20)
obj->spe = 20;
p_glow2(obj, NH_BLUE);
} else {
obj->spe += rnd(4);
if (obj->spe > 20)
obj->spe = 20;
p_glow1(obj);
}
break;
default:
goto not_chargable;
/*NOTREACHED*/
break;
} /* switch */
} else {
not_chargable:
You("have a feeling of loss.");
}
}
/* Forget known information about this object type. */
STATIC_OVL void
forget_single_object(obj_id)
int obj_id;
{
objects[obj_id].oc_name_known = 0;
objects[obj_id].oc_pre_discovered = 0; /* a discovery when relearned */
if (objects[obj_id].oc_uname) {
free((genericptr_t) objects[obj_id].oc_uname);
objects[obj_id].oc_uname = 0;
}
undiscover_object(obj_id); /* after clearing oc_name_known */
/* clear & free object names from matching inventory items too? */
}
#if 0 /* here if anyone wants it.... */
/* Forget everything known about a particular object class. */
STATIC_OVL void
forget_objclass(oclass)
int oclass;
{
int i;
for (i = bases[oclass];
i < NUM_OBJECTS && objects[i].oc_class == oclass; i++)
forget_single_object(i);
}
#endif
/* randomize the given list of numbers 0 <= i < count */
STATIC_OVL void
randomize(indices, count)
int *indices;
int count;
{
int i, iswap, temp;
for (i = count - 1; i > 0; i--) {
if ((iswap = rn2(i + 1)) == i)
continue;
temp = indices[i];
indices[i] = indices[iswap];
indices[iswap] = temp;
}
}
/* Forget % of known objects. */
void
forget_objects(percent)
int percent;
{
int i, count;
int indices[NUM_OBJECTS];
if (percent == 0)
return;
if (percent <= 0 || percent > 100) {
impossible("forget_objects: bad percent %d", percent);
return;
}
indices[0] = 0; /* lint suppression */
for (count = 0, i = 1; i < NUM_OBJECTS; i++)
if (OBJ_DESCR(objects[i])
&& (objects[i].oc_name_known || objects[i].oc_uname))
indices[count++] = i;
if (count > 0) {
randomize(indices, count);
/* forget first % of randomized indices */
count = ((count * percent) + rn2(100)) / 100;
for (i = 0; i < count; i++)
forget_single_object(indices[i]);
}
}
/* Forget some or all of map (depends on parameters). */
void
forget_map(howmuch)
int howmuch;
{
register int zx, zy;
if (Sokoban)
return;
known = TRUE;
for (zx = 0; zx < COLNO; zx++)
for (zy = 0; zy < ROWNO; zy++)
if (howmuch & ALL_MAP || rn2(7)) {
/* Zonk all memory of this location. */
levl[zx][zy].seenv = 0;
levl[zx][zy].waslit = 0;
levl[zx][zy].glyph = cmap_to_glyph(S_stone);
lastseentyp[zx][zy] = STONE;
}
/* forget overview data for this level */
forget_mapseen(ledger_no(&u.uz));
}
/* Forget all traps on the level. */
void
forget_traps()
{
register struct trap *trap;
/* forget all traps (except the one the hero is in :-) */
for (trap = ftrap; trap; trap = trap->ntrap)
if ((trap->tx != u.ux || trap->ty != u.uy) && (trap->ttyp != HOLE))
trap->tseen = 0;
}
/*
* Forget given % of all levels that the hero has visited and not forgotten,
* except this one.
*/
void
forget_levels(percent)
int percent;
{
int i, count;
xchar maxl, this_lev;
int indices[MAXLINFO];
if (percent == 0)
return;
if (percent <= 0 || percent > 100) {
impossible("forget_levels: bad percent %d", percent);
return;
}
this_lev = ledger_no(&u.uz);
maxl = maxledgerno();
/* count & save indices of non-forgotten visited levels */
/* Sokoban levels are pre-mapped for the player, and should stay
* so, or they become nearly impossible to solve. But try to
* shift the forgetting elsewhere by fiddling with percent
* instead of forgetting fewer levels.
*/
indices[0] = 0; /* lint suppression */
for (count = 0, i = 0; i <= maxl; i++)
if ((level_info[i].flags & VISITED)
&& !(level_info[i].flags & FORGOTTEN) && i != this_lev) {
if (ledger_to_dnum(i) == sokoban_dnum)
percent += 2;
else
indices[count++] = i;
}
if (percent > 100)
percent = 100;
if (count > 0) {
randomize(indices, count);
/* forget first % of randomized indices */
count = ((count * percent) + 50) / 100;
for (i = 0; i < count; i++) {
level_info[indices[i]].flags |= FORGOTTEN;
forget_mapseen(indices[i]);
}
}
}
/*
* Forget some things (e.g. after reading a scroll of amnesia). When called,
* the following are always forgotten:
* - felt ball & chain
* - traps
* - part (6 out of 7) of the map
*
* Other things are subject to flags:
* howmuch & ALL_MAP = forget whole map
* howmuch & ALL_SPELLS = forget all spells
*/
STATIC_OVL void
forget(howmuch)
int howmuch;
{
if (Punished)
u.bc_felt = 0; /* forget felt ball&chain */
forget_map(howmuch);
forget_traps();
/* 1 in 3 chance of forgetting some levels */
if (!rn2(3))
forget_levels(rn2(25));
/* 1 in 3 chance of forgetting some objects */
if (!rn2(3))
forget_objects(rn2(25));
if (howmuch & ALL_SPELLS)
losespells();
/*
* Make sure that what was seen is restored correctly. To do this,
* we need to go blind for an instant --- turn off the display,
* then restart it. All this work is needed to correctly handle
* walls which are stone on one side and wall on the other. Turning
* off the seen bits above will make the wall revert to stone, but
* there are cases where we don't want this to happen. The easiest
* thing to do is to run it through the vision system again, which
* is always correct.
*/
docrt(); /* this correctly will reset vision */
}
/* monster is hit by scroll of taming's effect */
STATIC_OVL int
maybe_tame(mtmp, sobj)
struct monst *mtmp;
struct obj *sobj;
{
int was_tame = mtmp->mtame;
unsigned was_peaceful = mtmp->mpeaceful;
if (sobj->cursed) {
setmangry(mtmp, FALSE);
if (was_peaceful && !mtmp->mpeaceful)
return -1;
} else {
if (mtmp->isshk)
make_happy_shk(mtmp, FALSE);
else if (!resist(mtmp, sobj->oclass, 0, NOTELL))
(void) tamedog(mtmp, (struct obj *) 0);
if ((!was_peaceful && mtmp->mpeaceful) || (!was_tame && mtmp->mtame))
return 1;
}
return 0;
}
STATIC_OVL boolean
get_valid_stinking_cloud_pos(x,y)
int x,y;
{
return (!(!isok(x,y) || !cansee(x, y)
|| !ACCESSIBLE(levl[x][y].typ)
|| distu(x, y) >= 32));
}
STATIC_OVL boolean
is_valid_stinking_cloud_pos(x, y, showmsg)
int x, y;
boolean showmsg;
{
if (!get_valid_stinking_cloud_pos(x,y)) {
if (showmsg)
You("smell rotten eggs.");
return FALSE;
}
return TRUE;
}
STATIC_PTR void
display_stinking_cloud_positions(state)
int state;
{
if (state == 0) {
tmp_at(DISP_BEAM, cmap_to_glyph(S_goodpos));
} else if (state == 1) {
int x, y, dx, dy;
int dist = 6;
for (dx = -dist; dx <= dist; dx++)
for (dy = -dist; dy <= dist; dy++) {
x = u.ux + dx;
y = u.uy + dy;
if (get_valid_stinking_cloud_pos(x,y))
tmp_at(x, y);
}
} else {
tmp_at(DISP_END, 0);
}
}
/* scroll effects; return 1 if we use up the scroll and possibly make it
become discovered, 0 if caller should take care of those side-effects */
int
seffects(sobj)
struct obj *sobj; /* scroll, or fake spellbook object for scroll-like spell */