code/__DEFINES/obj_flags.dm

BLOCKS_CONSTRUCTION	Does this object prevent things from being built on it?
BLOCKS_CONSTRUCTION_DIR	Does this object prevent same-direction things from being built on it?
IGNORE_DENSITY	Can we ignore density when building on this object? (for example, directional windows and grilles)
CONDUCTS_ELECTRICITY	Can this object conduct electricity?
NO_DEBRIS_AFTER_DECONSTRUCTION	Atoms don't spawn anything when deconstructed. They just vanish
NEEDS_PERMIT	Used by security bots to determine if this item is safe for public use.
IGNORE_DIGITIGRADE	Can be equipped on digitigrade legs.
ITEM_HAS_CONTEXTUAL_SCREENTIPS	Has contextual screentips when HOVERING OVER OTHER objects
NO_BLOOD_ON_ITEM	No blood overlay is allowed to appear on this item, and it cannot gain blood DNA forensics
SKIP_FANTASY_ON_SPAWN	Whether this item should skip the /datum/component/fantasy applied on spawn on the RPG event. Used on things like stacks
LAVAPROTECT	SUIT and HEAD items which stop lava from hurting the wearer
STOPSPRESSUREDAMAGE	SUIT and HEAD items which stop pressure damage. To stop you taking all pressure damage you must have both a suit and head item with this flag.
BLOCK_GAS_SMOKE_EFFECT	blocks the effect that chemical clouds would have on a mob --glasses, mask and helmets ONLY!
MASKINTERNALS	mask allows internals
GAS_FILTERING	mask filters toxins and other harmful gases
THICKMATERIAL	prevents syringes, parapens and hypos if the external suit or helmet (if targeting head) has this flag. Example: space suits, biosuit, bombsuits, thick suits that cover your body.
VOICEBOX_TOGGLABLE	The voicebox in this clothing can be toggled.
VOICEBOX_DISABLED	The voicebox is currently turned off.
SNUG_FIT	Prevents knock-off from things like hat-throwing.
ANTI_TINFOIL_MANEUVER	Hats with negative effects when worn (i.e the tinfoil hat).
DANGEROUS_OBJECT	Clothes that cause a larger notification when placed on a person.
LARGE_WORN_ICON	Clothes that use large icons, for applying the proper overlays like blood
STACKABLE_HELMET_EXEMPT	prevents from placing on plasmaman helmet or modsuit hat holder
PLASMAMAN_PREVENT_IGNITION	Prevents plasmamen from igniting when wearing this
CASTING_CLOTHES	Usable as casting clothes by wizards (matters for suits, glasses and headwear)
INEDIBLE_CLOTHING	Moths can't eat the clothing that has this flag.
HEADINTERNALS	Headgear/helmet allows internals
INTERNALS_ADJUST_EXEMPT	Prevents masks from getting adjusted from enabling internals
CLOTHING_PRISTINE	Integrity defines for clothing (not flags but close enough)
FIRST_SOUNDS	Flags for the pod_flags var on /obj/structure/closet/supplypod
TOY_FIREARM_OVERLAY	Flags for the gun_flags var for firearms
NOT_A_REAL_GUN	Currently used to identify valid guns to steal
TURRET_INCOMPATIBLE	This gun shouldn't be allowed to go in a turret (it probably causes a bug/exploit)
SHARP_EDGED	Flags for sharpness in obj/item
INCLUDE_POCKETS	Flags for specifically what kind of items to get in get_equipped_items

Define Details

#define
ANTI_TINFOIL_MANEUVER

Hats with negative effects when worn (i.e the tinfoil hat).

#define
BLOCKS_CONSTRUCTION

Does this object prevent things from being built on it?

#define
BLOCKS_CONSTRUCTION_DIR

Does this object prevent same-direction things from being built on it?

#define
BLOCK_GAS_SMOKE_EFFECT

blocks the effect that chemical clouds would have on a mob --glasses, mask and helmets ONLY!

#define
CASTING_CLOTHES

Usable as casting clothes by wizards (matters for suits, glasses and headwear)

#define
CLOTHING_PRISTINE

Integrity defines for clothing (not flags but close enough)

#define
CONDUCTS_ELECTRICITY

Can this object conduct electricity?

#define
DANGEROUS_OBJECT

Clothes that cause a larger notification when placed on a person.

#define
FIRST_SOUNDS

Flags for the pod_flags var on /obj/structure/closet/supplypod

#define
GAS_FILTERING

mask filters toxins and other harmful gases

#define
HEADINTERNALS

Headgear/helmet allows internals

#define
IGNORE_DENSITY

Can we ignore density when building on this object? (for example, directional windows and grilles)

#define
IGNORE_DIGITIGRADE

Can be equipped on digitigrade legs.

#define
INCLUDE_POCKETS

Flags for specifically what kind of items to get in get_equipped_items

#define
INEDIBLE_CLOTHING

Moths can't eat the clothing that has this flag.

#define
INTERNALS_ADJUST_EXEMPT

Prevents masks from getting adjusted from enabling internals

#define
ITEM_HAS_CONTEXTUAL_SCREENTIPS

Has contextual screentips when HOVERING OVER OTHER objects

#define
LARGE_WORN_ICON

Clothes that use large icons, for applying the proper overlays like blood

#define
LAVAPROTECT

SUIT and HEAD items which stop lava from hurting the wearer

#define
MASKINTERNALS

mask allows internals

#define
NEEDS_PERMIT

Used by security bots to determine if this item is safe for public use.

#define
NOT_A_REAL_GUN

Currently used to identify valid guns to steal

#define
NO_BLOOD_ON_ITEM

No blood overlay is allowed to appear on this item, and it cannot gain blood DNA forensics

#define
NO_DEBRIS_AFTER_DECONSTRUCTION

Atoms don't spawn anything when deconstructed. They just vanish

#define
PLASMAMAN_PREVENT_IGNITION

Prevents plasmamen from igniting when wearing this

#define
SHARP_EDGED

Flags for sharpness in obj/item

#define
SKIP_FANTASY_ON_SPAWN

Whether this item should skip the /datum/component/fantasy applied on spawn on the RPG event. Used on things like stacks

#define
SNUG_FIT

Prevents knock-off from things like hat-throwing.

#define
STACKABLE_HELMET_EXEMPT

prevents from placing on plasmaman helmet or modsuit hat holder

#define
STOPSPRESSUREDAMAGE

SUIT and HEAD items which stop pressure damage. To stop you taking all pressure damage you must have both a suit and head item with this flag.

#define
THICKMATERIAL

prevents syringes, parapens and hypos if the external suit or helmet (if targeting head) has this flag. Example: space suits, biosuit, bombsuits, thick suits that cover your body.

#define
TOY_FIREARM_OVERLAY

Flags for the gun_flags var for firearms

#define
TURRET_INCOMPATIBLE

This gun shouldn't be allowed to go in a turret (it probably causes a bug/exploit)

#define
VOICEBOX_DISABLED

The voicebox is currently turned off.

#define
VOICEBOX_TOGGLABLE

The voicebox in this clothing can be toggled.

code/__DEFINES/obj_flags.dm

Define Details

#define ANTI_TINFOIL_MANEUVER

#define BLOCKS_CONSTRUCTION

#define BLOCKS_CONSTRUCTION_DIR

#define BLOCK_GAS_SMOKE_EFFECT

#define CASTING_CLOTHES

#define CLOTHING_PRISTINE

#define CONDUCTS_ELECTRICITY

#define DANGEROUS_OBJECT

#define FIRST_SOUNDS

#define GAS_FILTERING

#define HEADINTERNALS

#define IGNORE_DENSITY

#define IGNORE_DIGITIGRADE

#define INCLUDE_POCKETS

#define INEDIBLE_CLOTHING

#define INTERNALS_ADJUST_EXEMPT

#define ITEM_HAS_CONTEXTUAL_SCREENTIPS

#define LARGE_WORN_ICON

#define LAVAPROTECT

#define MASKINTERNALS

#define NEEDS_PERMIT

#define NOT_A_REAL_GUN

#define NO_BLOOD_ON_ITEM

#define NO_DEBRIS_AFTER_DECONSTRUCTION

#define PLASMAMAN_PREVENT_IGNITION

#define SHARP_EDGED

#define SKIP_FANTASY_ON_SPAWN

#define SNUG_FIT

#define STACKABLE_HELMET_EXEMPT

#define STOPSPRESSUREDAMAGE

#define THICKMATERIAL

#define TOY_FIREARM_OVERLAY

#define TURRET_INCOMPATIBLE

#define VOICEBOX_DISABLED

#define VOICEBOX_TOGGLABLE