/* NetHack 5.0 obj.h $NHDT-Date: 1718999845 2024/06/21 19:57:25 $ $NHDT-Branch: NetHack-3.7 $:$NHDT-Revision: 1.116 $ */

/* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */

/*-Copyright (c) Michael Allison, 2006. */

/* NetHack may be freely redistributed. See license for details. */

#ifndef OBJ_H

#define OBJ_H

/* #define obj obj_nh */ /* uncomment for SCO UNIX, which has a conflicting

* typedef for "obj" in <sys/types.h> */

/* start with incomplete types in case these aren't defined yet;

basic pointers to them don't need to know their details */

struct obj;

struct monst;

union vptrs {

struct obj *v_nexthere; /* floor location lists */

struct obj *v_ocontainer; /* point back to container */

struct monst *v_ocarry; /* point back to carrying monst */

};

/****

*** oextra -- collection of all object extensions

** (see the note at the bottom of this file before adding oextra fields)

*/

struct oextra {

char *oname; /* ptr to name of object */

struct monst *omonst; /* ptr to attached monst struct */

char *omailcmd; /* response_cmd for mail delivery */

unsigned omid; /* for corpse: m_id of corpse's ghost; overloaded

* for glob: owt at time added to shop's bill */

};

struct obj {

struct obj *nobj;

union vptrs v;

#define nexthere v.v_nexthere

#define ocontainer v.v_ocontainer

#define ocarry v.v_ocarry

struct obj *cobj; /* contents list for containers */

unsigned o_id;

coordxy ox, oy;

short otyp; /* object class number */

unsigned owt;

long quan; /* number of items */

#define SPE_LIM 99 /* abs(obj->spe) <= 99, cap for enchanted and charged

* objects (and others; named fruit index excepted) */

schar spe; /* quality of weapon, weptool, armor, or some rings (+ or -);

* number of charges for wand or charged tool ( >= -1 );

* number of candles attached to candelabrum (0..7);

* magic lamp (1 iff djinni inside => lamp is lightable);

* oil lamp, tallow/wax candle (1 for no apparent reason?);

* marks spinach tins (1 iff corpsenm==NON_PM);

* marks tin variety (various: homemade, stir fried, &c);

* eggs laid by you (1), eggs upgraded with royal jelly (2);

* Schroedinger's Box (1) or royal coffers for a court (2);

* named fruit index;

* candy bar wrapper index;

* scroll of scare monster (when uncursed: never picked up==0,

* has been picked up==1, turns to dust if picked up again;

* when blessed|cursed: flag not checked, set, or cleared);

* scroll of mail (normal==0, bones or wishing==1, written==2);

* splash of venom (normal==0, wishing==1);

* gender for corpses, statues, and figurines (0..3,

* CORPSTAT_GENDER),

* historic flag for statues (4, CORPSTAT_HISTORIC) */

char oclass; /* object class */

char invlet; /* designation in inventory */

char oartifact; /* artifact array index */

xint8 where; /* where the object thinks it is */

#define OBJ_FREE 0 /* object not attached to anything */

#define OBJ_FLOOR 1 /* object on floor */

#define OBJ_CONTAINED 2 /* object in a container */

#define OBJ_INVENT 3 /* object in the hero's inventory */

#define OBJ_MINVENT 4 /* object in a monster inventory */

#define OBJ_MIGRATING 5 /* object sent off to another level */

#define OBJ_BURIED 6 /* object buried */

#define OBJ_ONBILL 7 /* object on shk bill */

#define OBJ_LUAFREE 8 /* object has been dealloc'd, but is ref'd by lua */

#define OBJ_DELETED 9 /* object is marked for deletion by dobjsfree() */

/* note: OBJ_xxx values are used in obj_state_names[] in mkobj.c

so adding, removing, or renumbering these needs to change that too */

#define NOBJ_STATES 10

xint16 timed; /* # of fuses (timers) attached to this obj */

/* Bitfields currently require 5 bytes minimum */

Bitfield(cursed, 1); /* uncursed when neither cursed nor blessed */

Bitfield(blessed, 1);

Bitfield(unpaid, 1); /* owned by shop; valid for objects in hero's

* inventory or inside containers there; also,

* used for items on the floor only on the shop

* boundary (including "free spot") or if moved

* from there to inside by wall repairs */

Bitfield(no_charge, 1); /* if shk shouldn't charge for this; valid for

* items on shop floor or in containers there;

* implicit for items at any other location

* unless carried and explicitly flagged unpaid */

Bitfield(recharged, 3); /* number of times it's been recharged */

#define on_ice recharged /* corpse on ice */

Bitfield(lamplit, 1); /* a light-source -- can be lit */

Bitfield(known, 1); /* exact nature known (for instance, charge count

* or enchantment); many items have this preset if

* they lack anything interesting to discover */

Bitfield(dknown, 1); /* description known (item seen "up close");

* some types of items always have dknown set;

* use observe_object to set to TRUE so that the

* discoveries list is still correct */

Bitfield(bknown, 1); /* BUC (blessed/uncursed/cursed) known */

Bitfield(rknown, 1); /* rustproofing status known */

Bitfield(cknown, 1); /* for containers (including statues): the contents

* are known; also applicable to tins; also applies

* to horn of plenty but only for empty/non-empty */

Bitfield(lknown, 1); /* locked/unlocked status is known; assigned for bags

* and for horn of plenty (when tipping) even though

* they have no locks */

Bitfield(tknown, 1); /* trap status known for chests */

Bitfield(nomerge, 1); /* set temporarily to prevent merging */

Bitfield(oeroded, 2); /* rusted/burnt weapon/armor */

Bitfield(oeroded2, 2); /* corroded/rotted weapon/armor */

#define greatest_erosion(otmp) \

(int)((otmp)->oeroded > (otmp)->oeroded2 ? (otmp)->oeroded \

: (otmp)->oeroded2)

#define MAX_ERODE 3

#define orotten oeroded /* rotten food */

#define odiluted oeroded /* diluted potions */

#define norevive oeroded2 /* frozen corpse */

Bitfield(oerodeproof, 1); /* erodeproof weapon/armor */

Bitfield(olocked, 1); /* object is locked */

Bitfield(obroken, 1); /* lock has been broken */

#define degraded_horn obroken /* unicorn horn will poly to non-magic */

Bitfield(otrapped, 1); /* container is trapped */

/* or accidental tripped rolling boulder trap */

#define opoisoned otrapped /* object (weapon) is coated with poison */

Bitfield(globby, 1); /* combines with like types on adjacent squares */

Bitfield(greased, 1); /* covered with grease */

Bitfield(in_use, 1); /* for magic items before useup items */

Bitfield(bypass, 1); /* mark this as an object to be skipped by bhito() */

Bitfield(pickup_prev, 1); /* was picked up previously */

Bitfield(ghostly, 1); /* it just got placed into a bones file */

Bitfield(how_lost, 3); /* stolen by mon or thrown, dropped by hero, etc */

Bitfield(named_how, 1); /* source of name per TODO in resetobjs() */

#if 0

/* not implemented */

Bitfield(eknown, 1); /* effect known for wands zapped or rings worn when

* not seen yet after being picked up while blind

* [maybe for remaining stack of used potion too] */

/* 5 free bits */

#else

/* 6 free bits */

#endif

int corpsenm; /* type of corpse is mons[corpsenm] */

#define leashmon corpsenm /* gets m_id of attached pet */

#define fromsink corpsenm /* a potion from a sink */

#define novelidx corpsenm /* 3.6 tribute - the index of the novel title */

#define migr_species corpsenm /* species to endow for MIGR_TO_SPECIES */

#define next_boulder corpsenm /* flag for xname() when pushing a pile of

* boulders, 0 for first (top of pile),

* 1 for others (format as "next boulder") */

int usecount; /* overloaded for various things that tally */

#define spestudied usecount /* # of times a spellbook has been studied */

#define wishedfor usecount /* flag for hold_another_object() if from wish */

unsigned oeaten; /* nutrition left in food, if partly eaten */

long age; /* creation date */

long owornmask; /* bit mask indicating which equipment slot(s) an

* item is worn in [by hero or by monster; could

* indicate more than one bit: attached iron ball

* that's also wielded];

* overloaded for the destination of migrating

* objects (which can't be worn at same time) */

unsigned lua_ref_cnt; /* # of lua script references for this object */

xint16 omigr_from_dnum; /* where obj is migrating from */

xint16 omigr_from_dlevel; /* where obj is migrating from */

struct oextra *oextra; /* pointer to oextra struct */

};

#define newobj() (struct obj *) alloc(sizeof (struct obj))

/***

** oextra referencing and testing macros

*/

#define ONAME(o) ((o)->oextra->oname)

#define OMONST(o) ((o)->oextra->omonst)

#define OMAILCMD(o) ((o)->oextra->omailcmd)

#define OMID(o) ((o)->oextra->omid) /* non-zero => set, zero => not set */

#define has_oname(o) ((o)->oextra && ONAME(o))

#define has_omonst(o) ((o)->oextra && OMONST(o))

#define has_omailcmd(o) ((o)->oextra && OMAILCMD(o))

#define has_omid(o) ((o)->oextra && OMID(o))

/* Weapons and weapon-tools */

/* KMH -- now based on skill categories. Formerly:

* #define is_sword(otmp) (otmp->oclass == WEAPON_CLASS && \

* objects[otmp->otyp].oc_wepcat == WEP_SWORD)

* #define is_blade(otmp) (otmp->oclass == WEAPON_CLASS && \

* (objects[otmp->otyp].oc_wepcat == WEP_BLADE || \

* objects[otmp->otyp].oc_wepcat == WEP_SWORD))

* #define is_weptool(o) ((o)->oclass == TOOL_CLASS && \

* objects[(o)->otyp].oc_weptool)

* #define is_multigen(otyp) (otyp <= SHURIKEN)

* #define is_poisonable(otyp) (otyp <= BEC_DE_CORBIN)

*/

#define is_blade(otmp) \

(otmp->oclass == WEAPON_CLASS \

&& objects[otmp->otyp].oc_skill >= P_DAGGER \

&& objects[otmp->otyp].oc_skill <= P_SABER)

#define is_axe(otmp) \

((otmp->oclass == WEAPON_CLASS || otmp->oclass == TOOL_CLASS) \

&& objects[otmp->otyp].oc_skill == P_AXE)

#define is_pick(otmp) \

((otmp->oclass == WEAPON_CLASS || otmp->oclass == TOOL_CLASS) \

&& objects[otmp->otyp].oc_skill == P_PICK_AXE)

#define is_sword(otmp) \

(otmp->oclass == WEAPON_CLASS \

&& objects[otmp->otyp].oc_skill >= P_SHORT_SWORD \

&& objects[otmp->otyp].oc_skill <= P_SABER)

/* Snickersnee is not a polearm, but can hit from distance */

#define is_pole(otmp) \

((otmp->oclass == WEAPON_CLASS || otmp->oclass == TOOL_CLASS) \

&& (objects[otmp->otyp].oc_skill == P_POLEARMS \

|| objects[otmp->otyp].oc_skill == P_LANCE \

|| is_art(otmp, ART_SNICKERSNEE)))

#define is_spear(otmp) \

(otmp->oclass == WEAPON_CLASS && objects[otmp->otyp].oc_skill == P_SPEAR)

#define is_launcher(otmp) \

(otmp->oclass == WEAPON_CLASS && objects[otmp->otyp].oc_skill >= P_BOW \

&& objects[otmp->otyp].oc_skill <= P_CROSSBOW)

#define is_ammo(otmp) \

((otmp->oclass == WEAPON_CLASS || otmp->oclass == GEM_CLASS) \

&& objects[otmp->otyp].oc_skill >= -P_CROSSBOW \

&& objects[otmp->otyp].oc_skill <= -P_BOW)

#define matching_launcher(a, l) \

((l) && objects[(a)->otyp].oc_skill == -objects[(l)->otyp].oc_skill)

#define ammo_and_launcher(a, l) (is_ammo(a) && matching_launcher(a, l))

#define is_missile(otmp) \

((otmp->oclass == WEAPON_CLASS || otmp->oclass == TOOL_CLASS) \

&& objects[otmp->otyp].oc_skill >= -P_BOOMERANG \

&& objects[otmp->otyp].oc_skill <= -P_DART)

#define is_weptool(o) \

((o)->oclass == TOOL_CLASS && objects[(o)->otyp].oc_skill != P_NONE)

/* towel is not a weptool: spe isn't an enchantment, cursed towel

doesn't weld to hand, and twoweapon won't work with one */

#define is_blunt_weapon(o) \

(((o)->oclass == WEAPON_CLASS || is_weptool(o)) \

&& ((objects[(o)->otyp].oc_dir & WHACK) != 0))

#define is_wet_towel(o) ((o)->otyp == TOWEL && (o)->spe > 0)

#define bimanual(otmp) \

((otmp->oclass == WEAPON_CLASS || otmp->oclass == TOOL_CLASS) \

&& objects[otmp->otyp].oc_bimanual)

#define is_multigen(otmp) \

(otmp->oclass == WEAPON_CLASS \

&& objects[otmp->otyp].oc_skill >= -P_SHURIKEN \

&& objects[otmp->otyp].oc_skill <= -P_BOW)

#define is_poisonable(otmp) \

((otmp->oclass == WEAPON_CLASS \

&& objects[otmp->otyp].oc_skill >= -P_SHURIKEN \

&& objects[otmp->otyp].oc_skill <= -P_BOW) \

|| permapoisoned(otmp))

#define uslinging() (uwep && objects[uwep->otyp].oc_skill == P_SLING)

/* 'is_quest_artifact()' only applies to the current role's artifact */

#define any_quest_artifact(o) ((o)->oartifact >= ART_ORB_OF_DETECTION)

/* 'missile' aspect is up to the caller and does not imply is_missile();

rings might be launched as missiles when being scattered by an explosion */

#define stone_missile(o) \

((objects[(o)->otyp].oc_material == GEMSTONE \

|| (objects[(o)->otyp].oc_material == MINERAL)) \

&& (o)->oclass != RING_CLASS)

/* Armor */

#define is_shield(otmp) \

(otmp->oclass == ARMOR_CLASS \

&& objects[otmp->otyp].oc_armcat == ARM_SHIELD)

#define is_helmet(otmp) \

(otmp->oclass == ARMOR_CLASS && objects[otmp->otyp].oc_armcat == ARM_HELM)

#define is_boots(otmp) \

(otmp->oclass == ARMOR_CLASS \

&& objects[otmp->otyp].oc_armcat == ARM_BOOTS)

#define is_gloves(otmp) \

(otmp->oclass == ARMOR_CLASS \

&& objects[otmp->otyp].oc_armcat == ARM_GLOVES)

#define is_cloak(otmp) \

(otmp->oclass == ARMOR_CLASS \

&& objects[otmp->otyp].oc_armcat == ARM_CLOAK)

#define is_shirt(otmp) \

(otmp->oclass == ARMOR_CLASS \

&& objects[otmp->otyp].oc_armcat == ARM_SHIRT)

#define is_suit(otmp) \

(otmp->oclass == ARMOR_CLASS && objects[otmp->otyp].oc_armcat == ARM_SUIT)

#define is_elven_armor(otmp) \

((otmp)->otyp == ELVEN_LEATHER_HELM \

|| (otmp)->otyp == ELVEN_MITHRIL_COAT || (otmp)->otyp == ELVEN_CLOAK \

|| (otmp)->otyp == ELVEN_SHIELD || (otmp)->otyp == ELVEN_BOOTS)

#define is_orcish_armor(otmp) \

((otmp)->otyp == ORCISH_HELM || (otmp)->otyp == ORCISH_CHAIN_MAIL \

|| (otmp)->otyp == ORCISH_RING_MAIL || (otmp)->otyp == ORCISH_CLOAK \

|| (otmp)->otyp == URUK_HAI_SHIELD || (otmp)->otyp == ORCISH_SHIELD)

#define is_dwarvish_armor(otmp) \

((otmp)->otyp == DWARVISH_IRON_HELM \

|| (otmp)->otyp == DWARVISH_MITHRIL_COAT \

|| (otmp)->otyp == DWARVISH_CLOAK \

|| (otmp)->otyp == DWARVISH_ROUNDSHIELD)

#define is_gnomish_armor(otmp) (FALSE)

/* Eggs and other food */

#define MAX_EGG_HATCH_TIME 200 /* longest an egg can remain unhatched */

#define stale_egg(egg) \

((svm.moves - (egg)->age) > (2 * MAX_EGG_HATCH_TIME))

#define ofood(o) ((o)->otyp == CORPSE || (o)->otyp == EGG || (o)->otyp == TIN)

/* note: sometimes eggs and tins have special corpsenm values that

shouldn't be used as an index into mons[] */

#define polyfood(obj) \

(ofood(obj) && (obj)->corpsenm >= LOW_PM \

&& (pm_to_cham((obj)->corpsenm) != NON_PM \

|| dmgtype(&mons[(obj)->corpsenm], AD_POLY)))

#define mlevelgain(obj) (ofood(obj) && (obj)->corpsenm == PM_WRAITH)

#define mhealup(obj) (ofood(obj) && (obj)->corpsenm == PM_NURSE)

#define Is_pudding(o) \

(o->otyp == GLOB_OF_GRAY_OOZE || o->otyp == GLOB_OF_BROWN_PUDDING \

|| o->otyp == GLOB_OF_GREEN_SLIME || o->otyp == GLOB_OF_BLACK_PUDDING)

/* Containers */

#define carried(o) ((o)->where == OBJ_INVENT)

#define mcarried(o) ((o)->where == OBJ_MINVENT)

#define Has_contents(o) \

(/* (Is_container(o) || (o)->otyp == STATUE) && */ \

(o)->cobj != (struct obj *) 0)

#define Is_container(o) ((o)->otyp >= LARGE_BOX && (o)->otyp <= BAG_OF_TRICKS)

#define Is_box(o) ((o)->otyp == LARGE_BOX || (o)->otyp == CHEST)

#define Is_mbag(o) ((o)->otyp == BAG_OF_HOLDING || (o)->otyp == BAG_OF_TRICKS)

#define SchroedingersBox(o) ((o)->otyp == LARGE_BOX && (o)->spe == 1)

/* usually waterproof; random chance to be subjected to leakage if cursed;

excludes statues, which aren't vulnerable to water even when cursed */

#define Waterproof_container(o) \

((o)->otyp == OILSKIN_SACK || (o)->otyp == ICE_BOX || Is_box(o))

/* dragon gear */

#define Is_dragon_scales(obj) \

((obj)->otyp >= GRAY_DRAGON_SCALES && (obj)->otyp <= YELLOW_DRAGON_SCALES)

#define Is_dragon_mail(obj) \

((obj)->otyp >= GRAY_DRAGON_SCALE_MAIL \

&& (obj)->otyp <= YELLOW_DRAGON_SCALE_MAIL)

#define Is_dragon_armor(obj) (Is_dragon_scales(obj) || Is_dragon_mail(obj))

#define Dragon_scales_to_pm(obj) \

&mons[PM_GRAY_DRAGON + (obj)->otyp - GRAY_DRAGON_SCALES]

#define Dragon_mail_to_pm(obj) \

&mons[PM_GRAY_DRAGON + (obj)->otyp - GRAY_DRAGON_SCALE_MAIL]

#define Dragon_to_scales(pm) (GRAY_DRAGON_SCALES + (pm - mons))

/* Elven gear */

#define is_elven_weapon(otmp) \

((otmp)->otyp == ELVEN_ARROW || (otmp)->otyp == ELVEN_SPEAR \

|| (otmp)->otyp == ELVEN_DAGGER || (otmp)->otyp == ELVEN_SHORT_SWORD \

|| (otmp)->otyp == ELVEN_BROADSWORD || (otmp)->otyp == ELVEN_BOW)

#define is_elven_obj(otmp) (is_elven_armor(otmp) || is_elven_weapon(otmp))

/* Orcish gear */

#define is_orcish_obj(otmp) \

(is_orcish_armor(otmp) || (otmp)->otyp == ORCISH_ARROW \

|| (otmp)->otyp == ORCISH_SPEAR || (otmp)->otyp == ORCISH_DAGGER \

|| (otmp)->otyp == ORCISH_SHORT_SWORD || (otmp)->otyp == ORCISH_BOW)

/* Dwarvish gear */

#define is_dwarvish_obj(otmp) \

(is_dwarvish_armor(otmp) || (otmp)->otyp == DWARVISH_SPEAR \

|| (otmp)->otyp == DWARVISH_SHORT_SWORD \

|| (otmp)->otyp == DWARVISH_MATTOCK)

/* Gnomish gear */

#define is_gnomish_obj(otmp) (is_gnomish_armor(otmp))

/* Light sources */

#define Is_candle(otmp) \

(otmp->otyp == TALLOW_CANDLE || otmp->otyp == WAX_CANDLE)

#define MAX_OIL_IN_FLASK 400 /* maximum amount of oil in a potion of oil */

/* age field of this is relative age rather than absolute; does not include

magic lamp */

#define age_is_relative(otmp) \

((otmp)->otyp == BRASS_LANTERN || (otmp)->otyp == OIL_LAMP \

|| (otmp)->otyp == CANDELABRUM_OF_INVOCATION \

|| (otmp)->otyp == TALLOW_CANDLE || (otmp)->otyp == WAX_CANDLE \

|| (otmp)->otyp == POT_OIL)

/* object can be ignited; magic lamp used to excluded here too but all

usage of this macro ended up testing

(ignitable(obj) || obj->otyp == MAGIC_LAMP)

so include it; brass lantern can be lit but not by fire */

#define ignitable(otmp) \

((otmp)->otyp == BRASS_LANTERN || (otmp)->otyp == OIL_LAMP \

|| ((otmp)->otyp == MAGIC_LAMP && (otmp)->spe > 0) \

|| (otmp)->otyp == CANDELABRUM_OF_INVOCATION \

|| (otmp)->otyp == TALLOW_CANDLE || (otmp)->otyp == WAX_CANDLE \

|| (otmp)->otyp == POT_OIL)

/* things that can be read */

#define is_readable(otmp) \

((otmp)->otyp == FORTUNE_COOKIE || (otmp)->otyp == T_SHIRT \

|| (otmp)->otyp == ALCHEMY_SMOCK || (otmp)->otyp == CREDIT_CARD \

|| (otmp)->otyp == CAN_OF_GREASE || (otmp)->otyp == MAGIC_MARKER \

|| (otmp)->oclass == COIN_CLASS || (otmp)->oartifact == ART_ORB_OF_FATE \

|| (otmp)->otyp == CANDY_BAR || (otmp)->otyp == HAWAIIAN_SHIRT)

/* special stones */

#define is_graystone(obj) \

((obj)->otyp == LUCKSTONE || (obj)->otyp == LOADSTONE \

|| (obj)->otyp == FLINT || (obj)->otyp == TOUCHSTONE)

/* misc helpers, simple enough to be macros */

#define is_flimsy(otmp) \

(objects[(otmp)->otyp].oc_material <= LEATHER \

|| (otmp)->otyp == RUBBER_HOSE)

#define is_plural(o) \

((o)->quan != 1L \

/* "the Eyes of the Overworld" are plural, but \

"a pair of lenses named the Eyes of the Overworld" is not */ \

|| ((o)->oartifact == ART_EYES_OF_THE_OVERWORLD \

&& !undiscovered_artifact(ART_EYES_OF_THE_OVERWORLD)))

#define pair_of(o) ((o)->otyp == LENSES || is_gloves(o) || is_boots(o))

#define unpolyable(o) ((o)->otyp == WAN_POLYMORPH \

|| (o)->otyp == SPE_POLYMORPH \

|| (o)->otyp == POT_POLYMORPH \

|| (o)->otyp == AMULET_OF_UNCHANGING)

/* achievement tracking; 3.6.x did this differently */

#define is_mines_prize(o) ((o)->o_id == svc.context.achieveo.mines_prize_oid)

#define is_soko_prize(o) ((o)->o_id == svc.context.achieveo.soko_prize_oid)

/* is_art() is now a function in artifact.c */

/* #define is_art(o,art) ((o) && (o)->oartifact == (art)) */

#define u_wield_art(art) is_art(uwep, art)

/* mummy wrappings are more versatile sizewise than other cloaks */

#define WrappingAllowed(mptr) \

(humanoid(mptr) && (mptr)->msize >= MZ_SMALL && (mptr)->msize <= MZ_HUGE \

&& !noncorporeal(mptr) && (mptr)->mlet != S_CENTAUR \

&& (mptr) != &mons[PM_WINGED_GARGOYLE] && (mptr) != &mons[PM_MARILITH])

/* Flags for get_obj_location(). */

#define CONTAINED_TOO 0x1

#define BURIED_TOO 0x2

/* object erosion types */

#define ERODE_NONE -1

#define ERODE_BURN 0

#define ERODE_RUST 1

#define ERODE_ROT 2

#define ERODE_CORRODE 3

#define ERODE_CRACK 4 /* crystal armor */

/* erosion flags for erode_obj() */

#define EF_NONE 0

#define EF_GREASE 0x1 /* check for a greased object */

#define EF_DESTROY 0x2 /* potentially destroy the object */

#define EF_VERBOSE 0x4 /* print extra messages */

#define EF_PAY 0x8 /* it's the player's fault */

/* erosion return values for erode_obj(), water_damage() */

#define ER_NOTHING 0 /* nothing happened */

#define ER_GREASED 1 /* protected by grease */

#define ER_DAMAGED 2 /* object was damaged in some way */

#define ER_DESTROYED 3 /* object was destroyed */

/* propeller method for potionhit() */

#define POTHIT_HERO_BASH 0 /* wielded by hero */

#define POTHIT_HERO_THROW 1 /* thrown by hero */

#define POTHIT_MONST_THROW 2 /* thrown by a monster */

#define POTHIT_OTHER_THROW 3 /* propelled by some other means [scatter()] */

/* tracking how an item left your inventory via how_lost field */

#define LOST_NONE 0 /* still in inventory, or method not covered below */

#define LOST_THROWN 1 /* thrown or fired by the hero */

#define LOST_DROPPED 2 /* dropped or tipped out of a container by the hero */

#define LOST_STOLEN 3 /* stolen from hero's inventory by a monster */

#define LOSTOVERRIDEMASK 0x3

#define LOST_EXPLODING 4 /* the object is exploding (i.e. POT_OIL) */

/* tracking how a name got acquired by an object in named_how field */

#define NAMED_PLAIN 0 /* nothing special, typical naming */

#define NAMED_KEEP 1 /* historic statue, or stoned/killed monster */

/*

* Notes for adding new oextra structures:

*

* 1. Add the structure definition and any required macros in an

* appropriate header file that precedes this one.

* 2. Add a pointer to your new struct to oextra struct in this file.

* 3. Add a referencing macro to this file after the newobj macro above

* (see ONAME, OMONST, OMAILCMD, or OMIN for examples).

* 4. Add a testing macro after the set of referencing macros

* (see has_oname(), has_omonst(), has_omailcmd(), and has_omin(),

* for examples).

* 5. If your new field isn't a pointer and requires a non-zero value

* on initialization, add code to init_oextra() in src/mkobj.c.

* 6. Create newXX(otmp) function and possibly free_XX(otmp) function

* in an appropriate new or existing source file and add a prototype

* for it to include/extern.h. The majority of these are currently

* located in mkobj.c for convenience.

*

* void newXX(struct obj *);

* void free_XX(struct obj *);

*

* void

* newxx(otmp)

* struct obj *otmp;

* {

* if (!otmp->oextra)

* otmp->oextra = newoextra();

* if (!XX(otmp)) {

* XX(otmp) = (struct XX *) alloc(sizeof (struct xx));

* (void) memset((genericptr_t) XX(otmp),

* 0, sizeof (struct xx));

* }

* }

*

* 7. Adjust size_obj() in src/cmd.c appropriately.

* 8. Adjust dealloc_oextra() in src/mkobj.c to clean up

* properly during obj deallocation.

* 9. Adjust copy_oextra() in src/mkobj.c to make duplicate

* copies of your struct or data onto another obj struct.

* 10. Adjust restobj() in src/restore.c to deal with your

* struct or data during a restore.

* 11. Adjust saveobj() in src/save.c to deal with your

* struct or data during a save.

*/

#endif /* OBJ_H */