obj-util.c File Reference

Object utilities. More...

#include "angband.h"
#include "cave.h"
#include "cmd-core.h"
#include "effects.h"
#include "game-input.h"
#include "game-world.h"
#include "generate.h"
#include "grafmode.h"
#include "init.h"
#include "mon-make.h"
#include "monster.h"
#include "obj-curse.h"
#include "obj-desc.h"
#include "obj-gear.h"
#include "obj-ignore.h"
#include "obj-knowledge.h"
#include "obj-make.h"
#include "obj-pile.h"
#include "obj-slays.h"
#include "obj-tval.h"
#include "obj-util.h"
#include "player-history.h"
#include "player-spell.h"
#include "player-util.h"
#include "randname.h"
#include "z-queue.h"

Functions
static void	flavor_assign_fixed (void)
static void	flavor_assign_random (byte tval)
void	flavor_reset_fixed (void)
	Reset svals on flavors, effectively removing any fixed flavors. More...
void	flavor_init (void)
	Prepare the "variable" part of the "k_info" array. More...
void	object_flags (const struct object *obj, bitflag flags[OF_SIZE])
	Obtain the flags for an item. More...
void	object_flags_known (const struct object *obj, bitflag flags[OF_SIZE])
	Obtain the flags for an item which are known to the player. More...
bool	object_test (item_tester tester, const struct object *obj)
	Apply a tester function, skipping all non-objects and gold. More...
bool	is_unknown (const struct object *obj)
	Return true if the item is unknown (has yet to be seen by the player). More...
unsigned	check_for_inscrip (const struct object *obj, const char *inscrip)
	Looks if "inscrip" is present on the given object. More...
struct object_kind *	lookup_kind (int tval, int sval)
	Return the object kind with the given tval and sval, or NULL. More...
struct object_kind *	objkind_byid (int kidx)
struct artifact *	lookup_artifact_name (const char *name)
	Return the a_idx of the artifact with the given name. More...
struct ego_item *	lookup_ego_item (const char *name, int tval, int sval)
int	lookup_sval (int tval, const char *name)
	Return the numeric sval of the object kind with the given tval and name name. More...
void	object_short_name (char *buf, size_t max, const char *name)
static int	compare_types (const struct object *o1, const struct object *o2)
	Sort comparator for objects using only tval and sval. More...
int	compare_items (const struct object *o1, const struct object *o2)
	Sort comparator for objects -1 if o1 should be first 1 if o2 should be first 0 if it doesn't matter. More...
bool	obj_has_charges (const struct object *obj)
	Determine if an object has charges. More...
bool	obj_can_zap (const struct object *obj)
	Determine if an object is zappable. More...
bool	obj_is_activatable (const struct object *obj)
	Determine if an object is activatable. More...
bool	obj_can_activate (const struct object *obj)
	Determine if an object can be activated now. More...
bool	obj_can_refill (const struct object *obj)
	Check if an object can be used to refuel other objects. More...
bool	obj_can_browse (const struct object *obj)
bool	obj_can_cast_from (const struct object *obj)
bool	obj_can_study (const struct object *obj)
bool	obj_can_takeoff (const struct object *obj)
bool	obj_can_wear (const struct object *obj)
bool	obj_can_fire (const struct object *obj)
bool	obj_has_inscrip (const struct object *obj)
bool	obj_has_flag (const struct object *obj, int flag)
bool	obj_is_useable (const struct object *obj)
struct effect *	object_effect (const struct object *obj)
	Return an object's effect. More...
bool	obj_needs_aim (struct object *obj)
	Does the given object need to be aimed? More...
bool	obj_can_fail (const struct object *o)
	Can the object fail if used? More...
int	get_use_device_chance (const struct object *obj)
	Returns the number of times in 1000 that @ will FAIL. More...
void	distribute_charges (struct object *source, struct object *dest, int amt)
	Distribute charges of rods, staves, or wands. More...
int	number_charging (const struct object *obj)
	Number of items (usually rods) charging. More...
bool	recharge_timeout (struct object *obj)
	Allow a stack of charging objects to charge by one unit per charging object Return true if something recharged. More...
bool	verify_object (const char *prompt, struct object *obj)
	Verify the choice of an item. More...

Variables
struct object_base *	kb_info
struct object_kind *	k_info
struct artifact *	a_info
	The artifact arrays. More...
struct ego_item *	e_info
struct flavor *	flavors
static char	scroll_adj [MAX_TITLES][18]
	Hold the titles of scrolls, 6 to 14 characters each, plus quotes. More...

Detailed Description

Object utilities.

Copyright (c) 1997 Ben Harrison, James E. Wilson, Robert A. Koeneke

This work is free software; you can redistribute it and/or modify it under the terms of either:

a) the GNU General Public License as published by the Free Software Foundation, version 2, or

b) the "Angband licence": This software may be copied and distributed for educational, research, and not for profit purposes provided that this copyright and statement are included in all such copies. Other copyrights may also apply.

Function Documentation

check_for_inscrip()

unsigned check_for_inscrip	(	const struct object *	obj,
		const char *	inscrip
	)

Looks if "inscrip" is present on the given object.

References i, object::note, and quark_str().

Referenced by auto_pickup_okay(), do_cmd_wield(), get_item_allow(), ignore_drop(), key_confirm_command(), and object_is_ignored().

compare_items()

int compare_items	(	const struct object *	o1,
		const struct object *	o2
	)

Sort comparator for objects -1 if o1 should be first 1 if o2 should be first 0 if it doesn't matter.

The sort order is designed with the "list items" command in mind.

References compare_types(), object_kind::cost, is_unknown(), object::kind, object_flavor_is_aware(), and object_is_known_artifact().

Referenced by object_list_standard_compare().

compare_types()

static int compare_types ( const struct object *  o1, const struct object *  o2  )

static

Sort comparator for objects using only tval and sval.

-1 if o1 should be first 1 if o2 should be first 0 if it doesn't matter

References CMP, object::sval, and object::tval.

Referenced by compare_items().

distribute_charges()

void distribute_charges	(	struct object *	source,
		struct object *	dest,
		int	amt
	)

Distribute charges of rods, staves, or wands.

Parameters

source	is the source item
dest	is the target item, must be of the same type as source
amt	is the number of items that are transfered

References AVERAGE, object::number, object::pval, randcalc(), object::time, object::timeout, tval_can_have_charges(), and tval_can_have_timeout().

Referenced by do_cmd_retrieve(), and object_split().

flavor_assign_fixed()

static void flavor_assign_fixed ( void  )

static

References object_kind::flavor, i, angband_constants::k_max, flavor::next, SV_UNKNOWN, object_kind::sval, flavor::sval, object_kind::tval, flavor::tval, and z_info.

Referenced by flavor_init().

flavor_assign_random()

static void flavor_assign_random ( byte  tval )

static

References object_kind::flavor, i, angband_constants::k_max, flavor::next, quit_fmt(), randint0, scroll_adj, SV_UNKNOWN, object_kind::sval, flavor::sval, flavor::text, flavor::tval, and z_info.

Referenced by flavor_init().

flavor_init()

void flavor_init

(

void

)

Prepare the "variable" part of the "k_info" array.

The "color"/"metal"/"type" of an item is its "flavor". For the most part, flavors are assigned randomly each game.

Initialize descriptions for the "colored" objects, including: Rings, Amulets, Staffs, Wands, Rods, Mushrooms, Potions, Scrolls.

Scroll titles are always between 6 and 14 letters long. This is ensured because every title is composed of whole words, where every word is from 2 to 8 letters long, and that no scroll is finished until it attempts to grow beyond 15 letters. The first time this can happen is when the current title has 6 letters and the new word has 8 letters, which would result in a 6 letter scroll title.

Hack – make sure everything stays the same for each saved game This is accomplished by the use of a saved "random seed", as in "town_gen()". Since no other functions are called while the special seed is in effect, so this function is pretty "safe".

References object_kind::aware, buf, cleanup_parser(), object_kind::flavor, flavor_assign_fixed(), flavor_assign_random(), flavor_parser, flavor_reset_fixed(), i, angband_constants::k_max, MAX_TITLES, my_strcpy(), object_kind::name, name_sections, flavor::next, NULL, OPT, Rand_quick, Rand_value, randname_make(), RANDNAME_SCROLL, run_parser(), scroll_adj, seed_flavor, streq, SV_UNKNOWN, flavor::sval, turn, and z_info.

Referenced by do_cmd_accept_character(), and rd_misc().

flavor_reset_fixed()

void flavor_reset_fixed

(

void

)

Reset svals on flavors, effectively removing any fixed flavors.

Mainly useful for randarts so that fixed flavors for standards aren't predictable. The One Ring is kept as fixed, since it lives through randarts.

References flavor::next, SV_UNKNOWN, flavor::sval, flavor::text, and flavor::tval.

Referenced by flavor_init().

get_use_device_chance()

int get_use_device_chance

(

const struct object *

obj

)

Returns the number of times in 1000 that @ will FAIL.

• thanks to Ed Graham for the formula

References object::artifact, object::kind, object_kind::level, artifact::level, SKILL_DEVICE, player_state::skills, and player::state.

Referenced by check_devices(), obj_known_effect(), and show_obj().

is_unknown()

bool is_unknown

(

const struct object *

obj

)

Return true if the item is unknown (has yet to be seen by the player).

References object::ix, object::iy, LIGHTING_LOS, grid_data::m_idx, map_info(), NULL, and grid_data::unseen_object.

Referenced by compare_items(), object_list_entry_line_attribute(), object_list_format_section(), object_list_should_ignore_object(), and scan_floor().

lookup_artifact_name()

struct artifact* lookup_artifact_name

(

const char *

name

)

Return the a_idx of the artifact with the given name.

References angband_constants::a_max, i, my_stristr(), artifact::name, NULL, streq, and z_info.

Referenced by rd_history(), and rd_item().

lookup_ego_item()

struct ego_item* lookup_ego_item	(	const char *	name,
		int	tval,
		int	sval
	)

Parameters

name	ego type name
tval	object tval
sval	object sval

Returns

eidx of the ego item type

References angband_constants::e_max, i, object_kind::kidx, poss_item::kidx, lookup_kind(), ego_item::name, poss_item::next, NULL, ego_item::poss_items, streq, and z_info.

Referenced by rd_item().

lookup_kind()

struct object_kind* lookup_kind	(	int	tval,
		int	sval
	)

Return the object kind with the given tval and sval, or NULL.

References angband_constants::k_max, msg, NULL, object_kind::sval, object_kind::tval, tval_find_name(), and z_info.

Referenced by add_ability_aux(), artifact_set_data_free(), collect_artifact_data(), copy_artifact_data(), count_abilities(), count_bow_abilities(), count_nonweapon_abilities(), count_weapon_abilities(), design_artifact(), finish_parse_artifact(), get_art_name(), get_base_item(), init_money_svals(), lookup_ego_item(), make_artifact(), make_artifact_special(), make_fake_artifact(), mon_create_drop(), money_kind(), obj_can_browse(), parse_always(), parse_artifact_act(), parse_artifact_graphics(), parse_artifact_info(), parse_artifact_time(), parse_class_equip(), parse_ego_item(), parse_lore_drop(), parse_lore_mimic(), parse_monster_drop(), parse_monster_mimic(), parse_normal(), parse_object_power_item(), parse_prefs_inscribe(), parse_prefs_object(), player_pickup_gold(), rd_ignore(), rd_item(), store_base_power(), test_equip0(), wiz_create_item_object_from_artifact(), wiz_test_kind(), and wr_item().

lookup_sval()

int lookup_sval	(	int	tval,
		const char *	name
	)

Return the numeric sval of the object kind with the given tval and name name.

References angband_constants::k_max, my_stricmp(), object_kind::name, obj_desc_name_format(), object_kind::sval, object_kind::tval, and z_info.

Referenced by apply_magic(), finish_parse_artifact(), object_list_format_name(), object_sense(), parse_always(), parse_artifact_base_object(), parse_class_book(), parse_class_equip(), parse_ego_item(), parse_flavor_flavor(), parse_lore_drop(), parse_lore_mimic(), parse_monster_drop(), parse_monster_mimic(), parse_normal(), parse_object_power_item(), parse_prefs_inscribe(), parse_prefs_object(), rd_ignore(), rd_item(), and write_curse_kinds().

number_charging()

int number_charging

(

const struct object *

obj

)

Number of items (usually rods) charging.

References AVERAGE, object::number, randcalc(), object::time, and object::timeout.

Referenced by obj_can_zap(), obj_desc_charges(), recharge_objects(), and recharge_timeout().

obj_can_activate()

bool obj_can_activate

(

const struct object *

obj

)

Determine if an object can be activated now.

References obj_is_activatable(), and object::timeout.

Referenced by context_menu_object(), and do_cmd_activate().

obj_can_browse()

bool obj_can_browse

(

const struct object *

obj

)

References class_magic::books, player::class, i, object::kind, lookup_kind(), player_class::magic, class_magic::num_books, class_book::sval, and class_book::tval.

Referenced by context_menu_object(), earlier_object(), obj_can_cast_from(), obj_can_study(), store_examine(), and textui_spell_browse().

obj_can_cast_from()

bool obj_can_cast_from

(

const struct object *

obj

)

References obj_can_browse(), spell_book_count_spells(), and spell_okay_to_cast().

Referenced by context_menu_object(), and do_cmd_cast().

obj_can_fail()

bool obj_can_fail

(

const struct object *

o

)

Can the object fail if used?

References false, tval_can_have_failure(), and wield_slot().

Referenced by show_obj().

obj_can_fire()

bool obj_can_fire

(

const struct object *

obj

)

References player_state::ammo_tval, player::state, and object::tval.

Referenced by context_menu_object(), and do_cmd_fire().

obj_can_refill()

bool obj_can_refill

(

const struct object *

obj

)

Check if an object can be used to refuel other objects.

References equipped_item_by_slot_name(), object::flags, of_has, object::timeout, tval_is_fuel(), and tval_is_light().

Referenced by context_menu_object(), do_cmd_refill(), do_cmd_use(), and test_obj_can_refill().

obj_can_study()

bool obj_can_study

(

const struct object *

obj

)

References obj_can_browse(), spell_book_count_spells(), and spell_okay_to_study().

Referenced by context_menu_object(), do_cmd_study_book(), do_cmd_study_spell(), and player_book_has_unlearned_spells().

obj_can_takeoff()

bool obj_can_takeoff

(

const struct object *

obj

)

References obj_has_flag().

Referenced by context_menu_object(), do_cmd_drop(), do_cmd_sell(), do_cmd_stash(), do_cmd_takeoff(), do_cmd_wield(), and store_sell().

obj_can_wear()

bool obj_can_wear

(

const struct object *

obj

)

References wield_slot().

Referenced by context_menu_object(), describe_origin(), and do_cmd_wield().

obj_can_zap()

bool obj_can_zap

(

const struct object *

obj

)

Determine if an object is zappable.

References object::number, number_charging(), and tval_can_have_timeout().

Referenced by context_menu_object(), and do_cmd_zap_rod().

obj_has_charges()

bool obj_has_charges

(

const struct object *

obj

)

Determine if an object has charges.

References object::pval, and tval_can_have_charges().

Referenced by context_menu_object(), do_cmd_aim_wand(), and do_cmd_use_staff().

obj_has_flag()

bool obj_has_flag	(	const struct object *	obj,
		int	flag
	)

References angband_constants::curse_max, curses, object::curses, object::flags, i, of_has, curse_data::power, and z_info.

Referenced by obj_can_takeoff().

obj_has_inscrip()

bool obj_has_inscrip

(

const struct object *

obj

)

References object::note.

Referenced by context_menu_object(), and do_cmd_uninscribe().

obj_is_activatable()

bool obj_is_activatable

(

const struct object *

obj

)

Determine if an object is activatable.

References object_effect(), true, and tval_is_wearable().

Referenced by context_menu_object(), do_cmd_activate(), do_cmd_use(), and obj_can_activate().

obj_is_useable()

bool obj_is_useable

(

const struct object *

obj

)

References player_state::ammo_tval, object_effect(), player::state, object::tval, tval_is_ammo(), and tval_is_useable().

Referenced by context_menu_object(), and do_cmd_use().

obj_needs_aim()

bool obj_needs_aim

(

struct object *

obj

)

Does the given object need to be aimed?

References effect_aim(), object_effect(), object_flavor_is_aware(), tval_is_ammo(), tval_is_rod(), and tval_is_wand().

Referenced by use_aux().

object_effect()

struct effect* object_effect

(

const struct object *

obj

)

Return an object's effect.

References object::activation, activation::effect, object::effect, and NULL.

Referenced by describe_effect(), obj_is_activatable(), obj_is_useable(), obj_known_effect(), obj_needs_aim(), and use_aux().

object_flags()

void object_flags	(	const struct object *	obj,
		bitflag	flags[OF_SIZE]
	)

Obtain the flags for an item.

References object::flags, flags, of_copy, and of_wipe.

Referenced by calc_bonuses(), equip_learn_after_time(), get_known_flags(), object_curses_find_flags(), object_flags_known(), object_learn_on_wield(), and wiz_display_item().

object_flags_known()

void object_flags_known	(	const struct object *	obj,
		bitflag	flags[OF_SIZE]
	)

Obtain the flags for an item which are known to the player.

References easy_know(), object::ego, object_kind::flags, ego_item::flags, object::flags, flags, ego_item::flags_off, object::kind, object::known, object_flags(), object_flavor_is_aware(), of_diff, of_inter, and of_union.

Referenced by calc_bonuses(), display_player_sust_info(), display_resistance_panel(), get_known_flags(), and wiz_display_item().

object_short_name()

void object_short_name	(	char *	buf,
		size_t	max,
		const char *	name
	)

Referenced by artifact_set_data_free(), dump_autoinscriptions(), dump_objects(), get_base_item(), and write_lore_entries().

object_test()

bool object_test	(	item_tester	tester,
		const struct object *	obj
	)

Apply a tester function, skipping all non-objects and gold.

References tval_is_money().

Referenced by build_obj_list(), scan_floor(), scan_items(), and textui_get_item().

objkind_byid()

struct object_kind* objkind_byid

(

int

kidx

)

References angband_constants::k_max, object_kind::kidx, NULL, and z_info.

Referenced by add_autoinscription(), get_obj_num(), get_obj_num_by_kind(), o_xattr(), o_xchar(), o_xtra_act(), o_xtra_prompt(), and remove_autoinscription().

recharge_timeout()

bool recharge_timeout

(

struct object *

obj

)

Allow a stack of charging objects to charge by one unit per charging object Return true if something recharged.

References MIN, number_charging(), and object::timeout.

Referenced by recharge_objects().

verify_object()

bool verify_object	(	const char *	prompt,
		struct object *	obj
	)

Verify the choice of an item.

The item can be negative to mean "item on floor".

References get_check(), object_desc(), ODESC_FULL, ODESC_PREFIX, and strnfmt().

Referenced by get_item_allow(), and ignore_drop().

Variable Documentation

a_info

struct artifact* a_info

The artifact arrays.

Referenced by a_cmp_tval(), art2gid(), artifact_is_known(), artifact_power(), cleanup_artifact(), collect_artifact_data(), collect_known_artifacts(), desc_art_fake(), describe_artifact(), design_artifact(), do_randart(), finish_parse_artifact(), finish_parse_randart(), get_art_name(), get_artifact_display_name(), make_artifact(), make_artifact_special(), mon_create_drop(), player_init(), rd_artifacts(), spoil_artifact(), store_base_power(), wiz_create_item(), wiz_create_item_action(), wiz_create_item_all_items(), wiz_create_item_subaction(), wiz_tweak_item(), wr_artifacts(), and wr_history().

e_info

struct ego_item* e_info

Referenced by alloc_init_egos(), brand_object(), cleanup_ego(), desc_ego_fake(), display_ego_item(), do_cmd_knowledge_ego_items(), e_cmp_tval(), ego_find_random(), ego_item_name(), ego_menu(), finish_parse_ego(), rd_ignore(), textui_browse_knowledge(), wiz_tweak_item(), and wr_ignore().

flavors

struct flavor* flavors

Referenced by cleanup_flavor(), dump_flavors(), finish_parse_flavor(), parse_prefs_flavor(), parse_prefs_object(), reset_visuals(), and textui_prefs_init().

k_info

struct object_kind* k_info

Referenced by alloc_init_objects(), cleanup_object(), desc_obj_fake(), display_object(), do_cmd_knowledge_ego_items(), do_cmd_wiz_learn(), dump_autoinscriptions(), dump_objects(), ego_has_ignore_type(), finish_parse_object(), hallucinatory_object(), ignore_birth_init(), ignore_collect_kind(), kind_info(), lookup_symbol(), map_info(), o_cmp_tval(), obj2gid(), object_info_ego(), parse_ego_type(), parse_object_power_type(), parse_prefs_object(), player_init(), rd_object_memory(), reset_visuals(), seen_tval(), setup_tests(), spoil_obj_desc(), teardown_tests(), test_defaults(), textui_browse_object_knowledge(), tval_sval_count(), tval_sval_list(), wiz_create_item_action(), wiz_create_item_all_items(), wiz_create_item_subaction(), wiz_create_item_subdisplay(), wr_ignore(), wr_object_memory(), and write_dummy_object_record().

kb_info

struct object_base* kb_info

Referenced by cleanup_object_base(), finish_parse_object(), finish_parse_object_base(), get_base_item(), object_base_name(), parse_object_type(), wiz_create_item(), and write_dummy_object_record().

scroll_adj

char scroll_adj[MAX_TITLES][18]

static

Hold the titles of scrolls, 6 to 14 characters each, plus quotes.

Referenced by flavor_assign_random(), and flavor_init().