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item.cpp
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item.cpp
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#include "item.h"
#include <algorithm>
#include <array>
#include <cctype>
#include <cmath>
#include <cstdlib>
#include <iomanip>
#include <iterator>
#include <limits>
#include <locale>
#include <memory>
#include <set>
#include <sstream>
#include <tuple>
#include <unordered_set>
#include "advanced_inv.h"
#include "ammo.h"
#include "ascii_art.h"
#include "avatar.h"
#include "bionics.h"
#include "bodypart.h"
#include "cata_assert.h"
#include "cata_utility.h"
#include "catacharset.h"
#include "character.h"
#include "character_id.h"
#include "character_martial_arts.h"
#include "clothing_mod.h"
#include "color.h"
#include "coordinates.h"
#include "craft_command.h"
#include "damage.h"
#include "debug.h"
#include "dispersion.h"
#include "effect.h" // for weed_msg
#include "enum_traits.h"
#include "enums.h"
#include "explosion.h"
#include "faction.h"
#include "fault.h"
#include "field_type.h"
#include "fire.h"
#include "flag.h"
#include "game.h"
#include "game_constants.h"
#include "gun_mode.h"
#include "iexamine.h"
#include "int_id.h"
#include "inventory.h"
#include "item_category.h"
#include "item_factory.h"
#include "item_group.h"
#include "item_pocket.h"
#include "iteminfo_query.h"
#include "itype.h"
#include "iuse.h"
#include "iuse_actor.h"
#include "line.h"
#include "magic.h"
#include "magic_enchantment.h"
#include "make_static.h"
#include "map.h"
#include "martialarts.h"
#include "material.h"
#include "messages.h"
#include "monster.h"
#include "mtype.h"
#include "npc.h"
#include "optional.h"
#include "options.h"
#include "output.h"
#include "overmap.h"
#include "overmapbuffer.h"
#include "pimpl.h"
#include "player.h"
#include "point.h"
#include "projectile.h"
#include "ranged.h"
#include "recipe.h"
#include "recipe_dictionary.h"
#include "relic.h"
#include "requirements.h"
#include "ret_val.h"
#include "rng.h"
#include "skill.h"
#include "stomach.h"
#include "string_formatter.h"
#include "string_id_utils.h"
#include "text_snippets.h"
#include "translations.h"
#include "units.h"
#include "units_utility.h"
#include "value_ptr.h"
#include "vehicle.h"
#include "vitamin.h"
#include "vpart_position.h"
#include "weather.h"
#include "weather_gen.h"
#include "weather_type.h"
static const std::string GUN_MODE_VAR_NAME( "item::mode" );
static const std::string CLOTHING_MOD_VAR_PREFIX( "clothing_mod_" );
static const ammotype ammo_battery( "battery" );
static const ammotype ammo_plutonium( "plutonium" );
static const item_category_id item_category_drugs( "drugs" );
static const item_category_id item_category_food( "food" );
static const item_category_id item_category_maps( "maps" );
static const item_category_id item_category_container( "container" );
static const efftype_id effect_cig( "cig" );
static const efftype_id effect_shakes( "shakes" );
static const efftype_id effect_sleep( "sleep" );
static const efftype_id effect_weed_high( "weed_high" );
static const efftype_id effect_bleed( "bleed" );
static const gun_mode_id gun_mode_REACH( "REACH" );
static const itype_id itype_battery( "battery" );
static const itype_id itype_barrel_small( "barrel_small" );
static const itype_id itype_blood( "blood" );
static const itype_id itype_brass_catcher( "brass_catcher" );
static const itype_id itype_bullet_crossbow( "bullet_crossbow" );
static const itype_id itype_cig_butt( "cig_butt" );
static const itype_id itype_cig_lit( "cig_lit" );
static const itype_id itype_cigar_butt( "cigar_butt" );
static const itype_id itype_cigar_lit( "cigar_lit" );
static const itype_id itype_hand_crossbow( "hand_crossbow" );
static const itype_id itype_joint_roach( "joint_roach" );
static const itype_id itype_plut_cell( "plut_cell" );
static const itype_id itype_rad_badge( "rad_badge" );
static const itype_id itype_tuned_mechanism( "tuned_mechanism" );
static const itype_id itype_UPS( "UPS" );
static const itype_id itype_waterproof_gunmod( "waterproof_gunmod" );
static const skill_id skill_cooking( "cooking" );
static const skill_id skill_melee( "melee" );
static const skill_id skill_survival( "survival" );
static const skill_id skill_unarmed( "unarmed" );
static const skill_id skill_weapon( "weapon" );
static const quality_id qual_JACK( "JACK" );
static const quality_id qual_LIFT( "LIFT" );
static const species_id species_ROBOT( "ROBOT" );
static const std::string trait_flag_CANNIBAL( "CANNIBAL" );
static const bionic_id bio_digestion( "bio_digestion" );
static const trait_id trait_CARNIVORE( "CARNIVORE" );
static const trait_id trait_JITTERY( "JITTERY" );
static const trait_id trait_LIGHTWEIGHT( "LIGHTWEIGHT" );
static const trait_id trait_SAPROVORE( "SAPROVORE" );
static const trait_id trait_TOLERANCE( "TOLERANCE" );
static const trait_id trait_WOOLALLERGY( "WOOLALLERGY" );
// vitamin flags
static const std::string flag_NO_DISPLAY( "NO_DISPLAY" );
// fault flags
static const std::string flag_SILENT( "SILENT" );
// terrain-furniture flags
static const std::string flag_FLAMMABLE( "FLAMMABLE" );
static const std::string flag_FLAMMABLE_ASH( "FLAMMABLE_ASH" );
static const std::string flag_DEEP_WATER( "DEEP_WATER" );
static const std::string flag_LIQUID( "LIQUID" );
static const std::string flag_LIQUIDCONT( "LIQUIDCONT" );
static const matec_id RAPID( "RAPID" );
class npc_class;
using npc_class_id = string_id<npc_class>;
std::string rad_badge_color( const int rad )
{
using pair_t = std::pair<const int, const translation>;
static const std::array<pair_t, 6> values = {{
pair_t { 0, to_translation( "color", "green" ) },
pair_t { 30, to_translation( "color", "blue" ) },
pair_t { 60, to_translation( "color", "yellow" )},
pair_t {120, to_translation( "color", "orange" )},
pair_t {240, to_translation( "color", "red" ) },
pair_t {500, to_translation( "color", "black" ) },
}
};
for( const auto &i : values ) {
if( rad <= i.first ) {
return i.second.translated();
}
}
return values.back().second.translated();
}
light_emission nolight = {0, 0, 0};
// Returns the default item type, used for the null item (default constructed),
// the returned pointer is always valid, it's never cleared by the @ref Item_factory.
static const itype *nullitem()
{
static itype nullitem_m;
return &nullitem_m;
}
item &null_item_reference()
{
static item result{};
// reset it, in case a previous caller has changed it
result = item();
return result;
}
namespace item_internal
{
bool goes_bad_temp_cache = false;
const item *goes_bad_temp_cache_for = nullptr;
inline bool goes_bad_cache_fetch()
{
return goes_bad_temp_cache;
}
inline void goes_bad_cache_set( const item *i )
{
goes_bad_temp_cache = i->goes_bad();
goes_bad_temp_cache_for = i;
}
inline void goes_bad_cache_unset()
{
goes_bad_temp_cache = false;
goes_bad_temp_cache_for = nullptr;
}
inline bool goes_bad_cache_is_for( const item *i )
{
return goes_bad_temp_cache_for == i;
}
struct scoped_goes_bad_cache {
scoped_goes_bad_cache( item *i ) {
goes_bad_cache_set( i );
}
~scoped_goes_bad_cache() {
goes_bad_cache_unset();
}
};
} // namespace item_internal
const int item::INFINITE_CHARGES = INT_MAX;
item::item() : bday( calendar::start_of_cataclysm )
{
type = nullitem();
charges = 0;
contents = item_contents( type->pockets );
}
item::item( const itype *type, time_point turn, int qty ) : type( type ), bday( turn )
{
corpse = has_flag( flag_CORPSE ) ? &mtype_id::NULL_ID().obj() : nullptr;
contents = item_contents( type->pockets );
item_counter = type->countdown_interval;
if( qty >= 0 ) {
charges = qty;
} else {
if( type->tool && type->tool->rand_charges.size() > 1 ) {
const int charge_roll = rng( 1, type->tool->rand_charges.size() - 1 );
charges = rng( type->tool->rand_charges[charge_roll - 1], type->tool->rand_charges[charge_roll] );
} else {
charges = type->charges_default();
}
}
if( has_flag( flag_NANOFAB_TEMPLATE ) ) {
itype_id nanofab_recipe =
item_group::item_from( type->nanofab_template_group ).typeId();
set_var( "NANOFAB_ITEM_ID", nanofab_recipe.str() );
}
if( type->gun ) {
for( const itype_id &mod : type->gun->built_in_mods ) {
item it( mod, turn, qty );
it.set_flag( flag_IRREMOVABLE );
put_in( it, item_pocket::pocket_type::MOD );
}
for( const itype_id &mod : type->gun->default_mods ) {
put_in( item( mod, turn, qty ), item_pocket::pocket_type::MOD );
}
} else if( type->magazine ) {
if( type->magazine->count > 0 ) {
put_in( item( type->magazine->default_ammo, calendar::turn, type->magazine->count ),
item_pocket::pocket_type::MAGAZINE );
}
} else if( has_temperature() || goes_bad() ) {
active = true;
last_temp_check = bday;
} else if( type->tool ) {
if( ammo_remaining() && !ammo_types().empty() ) {
ammo_set( ammo_default(), ammo_remaining() );
}
}
if( ( type->gun || type->tool ) && !magazine_integral() ) {
set_var( "magazine_converted", 1 );
}
if( !type->snippet_category.empty() ) {
snip_id = SNIPPET.random_id_from_category( type->snippet_category );
}
if( current_phase == phase_id::PNULL ) {
current_phase = type->phase;
}
// item always has any relic properties from itype.
if( type->relic_data ) {
relic_data = type->relic_data;
}
}
item::item( const itype_id &id, time_point turn, int qty )
: item( find_type( id ), turn, qty ) {}
item::item( const itype *type, time_point turn, default_charges_tag )
: item( type, turn, type->charges_default() ) {}
item::item( const itype_id &id, time_point turn, default_charges_tag tag )
: item( find_type( id ), turn, tag ) {}
item::item( const itype *type, time_point turn, solitary_tag )
: item( type, turn, type->count_by_charges() ? 1 : -1 ) {}
item::item( const itype_id &id, time_point turn, solitary_tag tag )
: item( find_type( id ), turn, tag ) {}
safe_reference<item> item::get_safe_reference()
{
return anchor.reference_to( this );
}
static const item *get_most_rotten_component( const item &craft )
{
const item *most_rotten = nullptr;
for( const item &it : craft.components ) {
if( it.goes_bad() ) {
if( !most_rotten || it.get_relative_rot() > most_rotten->get_relative_rot() ) {
most_rotten = ⁢
}
}
}
return most_rotten;
}
item::item( const recipe *rec, int qty, std::list<item> items, std::vector<item_comp> selections )
: item( "craft", calendar::turn, qty )
{
craft_data_ = cata::make_value<craft_data>();
craft_data_->making = rec;
components = items;
craft_data_->comps_used = selections;
if( is_food() ) {
active = true;
last_temp_check = bday;
if( goes_bad() ) {
const item *most_rotten = get_most_rotten_component( *this );
if( most_rotten ) {
set_relative_rot( most_rotten->get_relative_rot() );
}
}
}
for( item &component : components ) {
for( const flag_id &f : component.get_flags() ) {
if( f->craft_inherit() ) {
set_flag( f );
}
}
for( const flag_id &f : component.type->get_flags() ) {
if( f->craft_inherit() ) {
set_flag( f );
}
}
}
}
item::item( const item & ) = default;
item::item( item && ) = default;
item::~item() = default;
item &item::operator=( const item & ) = default;
item &item::operator=( item && ) = default;
item item::make_corpse( const mtype_id &mt, time_point turn, const std::string &name,
const int upgrade_time )
{
if( !mt.is_valid() ) {
debugmsg( "tried to make a corpse with an invalid mtype id" );
}
std::string corpse_type = mt == mtype_id::NULL_ID() ? "corpse_generic_human" : "corpse";
item result( corpse_type, turn );
result.corpse = &mt.obj();
if( result.corpse->has_flag( MF_REVIVES ) ) {
if( one_in( 20 ) ) {
result.set_flag( flag_REVIVE_SPECIAL );
}
result.set_var( "upgrade_time", std::to_string( upgrade_time ) );
}
if( !mt->zombify_into.is_empty() ) {
result.set_var( "zombie_form", mt->zombify_into.c_str() );
}
// This is unconditional because the const itemructor above sets result.name to
// "human corpse".
result.corpse_name = name;
return result;
}
item &item::convert( const itype_id &new_type )
{
type = find_type( new_type );
requires_tags_processing = true; // new type may have "active" flags
item temp( *this );
temp.contents = item_contents( type->pockets );
for( const item *it : contents.mods() ) {
if( !temp.contents.insert_item( *it, item_pocket::pocket_type::MOD ).success() ) {
debugmsg( "failed to insert mod" );
}
}
temp.update_modified_pockets();
temp.contents.combine( contents, true );
contents = temp.contents;
return *this;
}
item &item::deactivate( const Character *ch, bool alert )
{
if( !active ) {
return *this; // no-op
}
if( is_tool() && type->tool->revert_to ) {
if( ch && alert && !type->tool->revert_msg.empty() ) {
ch->add_msg_if_player( m_info, type->tool->revert_msg.translated(), tname() );
}
convert( *type->tool->revert_to );
active = false;
}
return *this;
}
item &item::activate()
{
if( active ) {
return *this; // no-op
}
if( type->countdown_interval > 0 ) {
item_counter = type->countdown_interval;
}
active = true;
return *this;
}
bool item::activate_thrown( const tripoint &pos )
{
return type->invoke( get_avatar(), *this, pos );
}
units::energy item::set_energy( const units::energy &qty )
{
if( !is_battery() ) {
debugmsg( "Tried to set energy of non-battery item" );
return 0_J;
}
units::energy val = energy_remaining() + qty;
if( val < 0_J ) {
return val;
} else if( val > type->battery->max_capacity ) {
energy = type->battery->max_capacity;
} else {
energy = val;
}
return 0_J;
}
item &item::ammo_set( const itype_id &ammo, int qty )
{
if( !ammo->ammo ) {
if( !has_flag( flag_USES_BIONIC_POWER ) ) {
debugmsg( "can't set ammo %s in %s as it is not an ammo", ammo.c_str(), type_name() );
}
return *this;
}
const ammotype &ammo_type = ammo->ammo->type;
if( qty < 0 ) {
// completely fill an integral or existing magazine
//if( magazine_current() ) then we need capacity of the magazine instead of the item maybe?
if( magazine_integral() || magazine_current() ) {
qty = ammo_capacity( ammo_type );
// else try to add a magazine using default ammo count property if set
} else if( !magazine_default().is_null() ) {
item mag( magazine_default() );
if( mag.type->magazine->count > 0 ) {
qty = mag.type->magazine->count;
} else {
qty = mag.ammo_capacity( ammo_type );
}
}
}
if( qty <= 0 ) {
ammo_unset();
return *this;
}
// handle reloadable tools and guns with no specific ammo type as special case
if( ammo.is_null() && ammo_types().empty() ) {
if( magazine_integral() ) {
if( is_tool() ) {
curammo = nullptr;
charges = std::min( qty, ammo_capacity( ammo_type ) );
} else if( is_gun() ) {
const item temp_ammo( ammo_default(), calendar::turn, std::min( qty, ammo_capacity( ammo_type ) ) );
put_in( temp_ammo, item_pocket::pocket_type::MAGAZINE );
}
}
return *this;
}
// check ammo is valid for the item
std::set<itype_id> mags = magazine_compatible();
if( ammo_types().count( ammo_type ) == 0 && !( magazine_current() &&
magazine_current()->ammo_types().count( ammo_type ) ) &&
!std::any_of( mags.begin(), mags.end(), [&ammo_type]( const itype_id & mag ) {
return mag->magazine->type.count( ammo_type );
} ) ) {
debugmsg( "Tried to set invalid ammo of %s for %s", ammo.c_str(), typeId().c_str() );
return *this;
}
if( is_magazine() ) {
ammo_unset();
item set_ammo( ammo, calendar::turn, std::min( qty, ammo_capacity( ammo_type ) ) );
if( has_flag( flag_NO_UNLOAD ) ) {
set_ammo.set_flag( flag_NO_DROP );
set_ammo.set_flag( flag_IRREMOVABLE );
}
put_in( set_ammo, item_pocket::pocket_type::MAGAZINE );
} else {
if( !magazine_current() ) {
itype_id mag = magazine_default();
if( !mag->magazine ) {
debugmsg( "Tried to set ammo of %s without suitable magazine for %s",
ammo.c_str(), typeId().c_str() );
return *this;
}
item mag_item( mag );
// if default magazine too small fetch instead closest available match
if( mag_item.ammo_capacity( ammo_type ) < qty ) {
std::vector<item> opts;
for( const itype_id &mag_type : mags ) {
if( mag->magazine->type.count( ammo_type ) ) {
opts.emplace_back( mag_type );
}
}
std::sort( opts.begin(), opts.end(), [&ammo_type]( const item & lhs, const item & rhs ) {
return lhs.ammo_capacity( ammo_type ) < rhs.ammo_capacity( ammo_type );
} );
auto iter = std::find_if( opts.begin(), opts.end(), [&qty, &ammo_type]( const item & mag ) {
return mag.ammo_capacity( ammo_type ) >= qty;
} );
if( iter != opts.end() ) {
mag = iter->typeId();
} else {
mag = opts.back().typeId();
}
}
put_in( item( mag ), item_pocket::pocket_type::MAGAZINE_WELL );
}
item *mag_cur = magazine_current();
if( mag_cur != nullptr ) {
mag_cur->ammo_set( ammo, qty );
}
}
return *this;
}
item &item::ammo_unset()
{
if( !is_tool() && !is_gun() && !is_magazine() ) {
// do nothing
} else if( is_magazine() ) {
if( is_money() ) { // charges are set wrong on cash cards.
charges = 0;
}
contents.clear_magazines();
} else if( magazine_integral() ) {
curammo = nullptr;
charges = 0;
if( is_gun() ) {
contents.clear_magazines();
}
} else if( magazine_current() ) {
magazine_current()->ammo_unset();
}
return *this;
}
int item::damage() const
{
return damage_;
}
int item::damage_level() const
{
if( damage_ == 0 ) {
return 0;
} else if( max_damage() <= 1 ) {
return damage_ > 0 ? 4 : damage_;
} else if( damage_ < 0 ) {
return -( 3 * ( -damage_ - 1 ) / ( max_damage() - 1 ) + 1 );
} else {
return 3 * ( damage_ - 1 ) / ( max_damage() - 1 ) + 1;
}
}
item &item::set_damage( int qty )
{
damage_ = std::max( std::min( qty, max_damage() ), min_damage() );
return *this;
}
item item::split( int qty )
{
if( !count_by_charges() || qty <= 0 || qty >= charges ) {
return item();
}
item res = *this;
res.charges = qty;
charges -= qty;
return res;
}
bool item::is_null() const
{
// Actually, type should never by null at all.
return ( type == nullptr || type == nullitem() || typeId().is_null() );
}
bool item::is_unarmed_weapon() const
{
return is_null() || has_flag( flag_UNARMED_WEAPON );
}
bool item::is_frozen_liquid() const
{
return made_of( phase_id::SOLID ) && made_of_from_type( phase_id::LIQUID );
}
bool item::covers( const bodypart_id &bp ) const
{
bool does_cover = false;
iterate_covered_body_parts_internal( get_side(), [&]( const bodypart_str_id & covered ) {
does_cover = does_cover || bp == covered;
} );
return does_cover;
}
body_part_set item::get_covered_body_parts() const
{
return get_covered_body_parts( get_side() );
}
body_part_set item::get_covered_body_parts( const side s ) const
{
body_part_set res;
iterate_covered_body_parts_internal( s, [&]( const bodypart_str_id & bp ) {
res.set( bp );
} );
return res;
}
namespace
{
const std::array<bodypart_str_id, 4> left_side_parts{ {
bodypart_str_id{"arm_l"},
bodypart_str_id{"hand_l"},
bodypart_str_id{"leg_l"},
bodypart_str_id{"foot_l"}
}
};
const std::array<bodypart_str_id, 4> right_side_parts{ {
bodypart_str_id{"arm_r"},
bodypart_str_id{"hand_r"},
bodypart_str_id{"leg_r"},
bodypart_str_id{"foot_r"}
}
};
} // namespace
void item::iterate_covered_body_parts_internal( const side s,
std::function<void( const bodypart_str_id & )> cb ) const
{
if( is_gun() ) {
// Currently only used for guns with the should strap mod, other guns might
// go on another bodypart.
cb( body_part_torso );
}
const islot_armor *armor = find_armor_data();
if( armor == nullptr ) {
return;
}
// If we are querying for only one side of the body, we ignore coverage
// for parts on the opposite side of the body.
const auto &opposite_side_parts = s == side::LEFT ? right_side_parts : left_side_parts;
for( const armor_portion_data &data : armor->data ) {
if( data.covers.has_value() ) {
if( !armor->sided || s == side::BOTH || s == side::num_sides ) {
for( const bodypart_str_id &bpid : data.covers.value() ) {
cb( bpid );
}
continue;
}
for( const bodypart_str_id &bpid : data.covers.value() ) {
if( std::find( opposite_side_parts.begin(), opposite_side_parts.end(),
bpid ) == opposite_side_parts.end() ) {
cb( bpid );
}
}
}
}
}
bool item::is_sided() const
{
const islot_armor *t = find_armor_data();
return t ? t->sided : false;
}
side item::get_side() const
{
// MSVC complains if directly cast double to enum
return static_cast<side>( static_cast<int>( get_var( STATIC( std::string{ "lateral" } ),
static_cast<int>( side::BOTH ) ) ) );
}
bool item::set_side( side s )
{
if( !is_sided() ) {
return false;
}
if( s == side::BOTH ) {
erase_var( "lateral" );
} else {
set_var( "lateral", static_cast<int>( s ) );
}
return true;
}
bool item::swap_side()
{
return set_side( opposite_side( get_side() ) );
}
bool item::is_worn_only_with( const item &it ) const
{
return is_power_armor() && it.is_power_armor() && it.covers( bodypart_id( "torso" ) );
}
item item::in_its_container( int qty ) const
{
return in_container( type->default_container.value_or( "null" ), qty,
type->default_container_sealed );
}
item item::in_container( const itype_id &cont, const int qty, const bool sealed ) const
{
if( !cont.is_null() ) {
item ret( cont, birthday() );
if( ret.has_pockets() ) {
if( count_by_charges() ) {
ret.fill_with( *this, qty );
} else {
ret.put_in( *this, item_pocket::pocket_type::CONTAINER );
}
ret.invlet = invlet;
if( sealed ) {
ret.seal();
}
if( !ret.has_item_with( [&cont]( const item & it ) {
return it.typeId() == cont;
} ) ) {
debugmsg( "ERROR: failed to put %s in its container %s", typeId().c_str(), cont.c_str() );
return *this;
}
return ret;
}
}
return *this;
}
void item::update_modified_pockets()
{
cata::optional<const pocket_data *> mag_or_mag_well;
std::vector<const pocket_data *> container_pockets;
for( const pocket_data &pocket : type->pockets ) {
if( pocket.type == item_pocket::pocket_type::CONTAINER ) {
container_pockets.push_back( &pocket );
} else if( pocket.type == item_pocket::pocket_type::MAGAZINE ||
pocket.type == item_pocket::pocket_type::MAGAZINE_WELL ) {
mag_or_mag_well = &pocket;
}
}
for( const item *mod : mods() ) {
if( mod->type->mod ) {
for( const pocket_data &pocket : mod->type->mod->add_pockets ) {
if( pocket.type == item_pocket::pocket_type::CONTAINER ) {
container_pockets.push_back( &pocket );
} else if( pocket.type == item_pocket::pocket_type::MAGAZINE ||
pocket.type == item_pocket::pocket_type::MAGAZINE_WELL ) {
mag_or_mag_well = &pocket;
}
}
}
}
contents.update_modified_pockets( mag_or_mag_well, container_pockets );
}
int item::charges_per_volume( const units::volume &vol ) const
{
if( count_by_charges() ) {
if( type->volume == 0_ml ) {
debugmsg( "Item '%s' with zero volume", tname() );
return INFINITE_CHARGES;
}
// Type cast to prevent integer overflow with large volume containers like the cargo
// dimension
return vol * static_cast<int64_t>( type->stack_size ) / type->volume;
} else {
units::volume my_volume = volume();
if( my_volume == 0_ml ) {
debugmsg( "Item '%s' with zero volume", tname() );
return INFINITE_CHARGES;
}
return vol / my_volume;
}
}
int item::charges_per_weight( const units::mass &m ) const
{
if( count_by_charges() ) {
if( type->weight == 0_gram ) {
debugmsg( "Item '%s' with zero weight", tname() );
return INFINITE_CHARGES;
}
return m / type->weight;
} else {
units::mass my_weight = weight();
if( my_weight == 0_gram ) {
debugmsg( "Item '%s' with zero weight", tname() );
return INFINITE_CHARGES;
}
return m / my_weight;
}
}
bool item::display_stacked_with( const item &rhs, bool check_components ) const
{
return !count_by_charges() && stacks_with( rhs, check_components );
}
bool item::can_combine( const item &rhs ) const
{
if( !contents.empty() || !rhs.contents.empty() ) {
return false;
}
if( !count_by_charges() ) {
return false;
}
if( !stacks_with( rhs, true, true ) ) {
return false;
}
return true;
}
bool item::combine( const item &rhs )
{
if( !can_combine( rhs ) ) {
return false;
}
if( has_temperature() ) {
if( goes_bad() ) {
//use maximum rot between the two
set_relative_rot( std::max( get_relative_rot(),
rhs.get_relative_rot() ) );
}
const float lhs_energy = get_item_thermal_energy();
const float rhs_energy = rhs.get_item_thermal_energy();
if( rhs_energy > 0 && lhs_energy > 0 ) {
const float combined_specific_energy = ( lhs_energy + rhs_energy ) / ( to_gram(
weight() ) + to_gram( rhs.weight() ) );
set_item_specific_energy( combined_specific_energy );
}
}
charges += rhs.charges;
return true;
}
bool item::stacks_with( const item &rhs, bool check_components, bool combine_liquid ) const
{
if( type != rhs.type ) {
return false;
}
if( is_relic() && rhs.is_relic() && !( *relic_data == *rhs.relic_data ) ) {
return false;
}
if( charges != 0 && rhs.charges != 0 && is_money() ) {
// Dealing with nonempty cash cards
return true;
}
// This function is also used to test whether items counted by charges should be merged, for that
// check the, the charges must be ignored. In all other cases (tools/guns), the charges are important.
if( !count_by_charges() && charges != rhs.charges ) {
return false;
}
if( is_favorite != rhs.is_favorite ) {
return false;
}
if( damage_ != rhs.damage_ ) {
return false;
}
if( burnt != rhs.burnt ) {
return false;
}
if( active != rhs.active ) {
return false;
}
if( combine_liquid && has_temperature() && made_of_from_type( phase_id::LIQUID ) ) {
//we can combine liquids of same type and different temperatures
if( !equal_ignoring_elements( rhs.get_flags(), get_flags(),
{ flag_COLD, flag_FROZEN, flag_HOT } ) ) {
return false;
}
} else if( item_tags != rhs.item_tags ) {
return false;
}
if( faults != rhs.faults ) {
return false;
}
if( techniques != rhs.techniques ) {
return false;
}
if( item_vars != rhs.item_vars ) {
return false;
}
if( goes_bad() && rhs.goes_bad() ) {
// Stack items that fall into the same "bucket" of freshness.
// Distant buckets are larger than near ones.
std::pair<int, clipped_unit> my_clipped_time_to_rot =
clipped_time( get_shelf_life() - rot );
std::pair<int, clipped_unit> other_clipped_time_to_rot =
clipped_time( rhs.get_shelf_life() - rhs.rot );
if( my_clipped_time_to_rot != other_clipped_time_to_rot ) {
return false;
}