code/__DEFINES/flags.dm

ALL_CARDINALS	All the cardinal direction bitflags.
CONDUCT_1	conducts electricity (metal etc.)
NODECONSTRUCT_1	For machines and structures that should not break into parts, eg, holodeck stuff
OVERLAY_QUEUED_1	atom queued to SSoverlay
ON_BORDER_1	item has priority to check when entering or leaving
PREVENT_CLICK_UNDER_1	Prevent clicking things below it on the same turf eg. doors/ fulltile windows
SHOCKED_1	Prevents mobs from getting chainshocked by teslas and the supermatter
INITIALIZED_1	Whether /atom/Initialize() has already run for the object
ADMIN_SPAWNED_1	was this spawned by an admin? used for stat tracking stuff.
PREVENT_CONTENTS_EXPLOSION_1	should not get harmed if this gets caught by an explosion?
RAD_PROTECT_CONTENTS_1	should the contents of this atom be acted upon
RAD_NO_CONTAMINATE_1	should this object be allowed to be contaminated
SHOW_BEHIND_LARGE_ICONS_1	Use when this shouldn't be obscured by large icons, like trees.
HTML_USE_INITAL_ICON_1	Should we use the initial icon for display? Mostly used by overlay only objects
UPDATE_NAME	Update the atom's name
UPDATE_DESC	Update the atom's desc
UPDATE_ICON_STATE	Update the atom's icon state
UPDATE_OVERLAYS	Update the atom's overlays
UPDATE_GREYSCALE	Update the atom's greyscaling
UPDATE_SMOOTHING	Update the atom's smoothing. (More accurately, queue it for an update)
UPDATE_ICON	Update the atom's icon
CAN_BE_DIRTY_1	If a turf can be made dirty at roundstart. This is also used in areas.
NO_LAVA_GEN_1	Blocks lava rivers being generated on the turf
NO_RUINS_1	Blocks ruins spawning on the turf
RICOCHET_SHINY	If the thing can reflect light (lasers/energy)
RICOCHET_HARD	If the thing can reflect matter (bullets/bomb shrapnel)
VALID_TERRITORY	/////////////Area flags\\\\\\\ If it's a valid territory for cult summoning or the CRAB-17 phone to spawn
BLOBS_ALLOWED	If blobs can spawn there and if it counts towards their score.
CAVES_ALLOWED	If mining tunnel generation is allowed in this area
FLORA_ALLOWED	If flora are allowed to spawn in this area randomly through tunnel generation
MOB_SPAWN_ALLOWED	If mobs can be spawned by natural random generation
NOTELEPORT	Are you forbidden from teleporting to the area? (centcom, mobs, wizard, hand teleporter)
HIDDEN_AREA	Hides area from player Teleport function.
UNIQUE_AREA	If false, loading multiple maps with this area type will create multiple instances.
XENOBIOLOGY_COMPATIBLE	Can the Xenobio management console transverse this area by default?
LETPASSTHROW	Let thrown things past us. ONLY MEANINGFUL ON pass_flags_self!
PHASING	When moving, will Cross()/Uncross() everything, but won't stop or Bump() anything.
FIRE_PROOF	100% immune to fire damage (but not necessarily to lava or heat)
UNACIDABLE	acid can't even appear on it, let alone melt it.
ACID_PROOF	acid stuck on it doesn't melt it.
INDESTRUCTIBLE	doesn't take damage
FREEZE_PROOF	can't be frozen
LANDING_PROOF	Should this object not be destroyed when a shuttle lands on it?
HYPERSPACE_PROOF	Should this object be able to be in hyperspace without being deleted?
MOBILITY_MOVE	can move
MOBILITY_STAND	can, and is, standing up
MOBILITY_PICKUP	can pickup items
MOBILITY_USE	can hold and use items
MOBILITY_UI	can use interfaces like machinery
MOBILITY_STORAGE	can use storage item
MOBILITY_PULL	can pull things
ISDIAGONALDIR	Returns true if the dir is diagonal, false otherwise
NSCOMPONENT	True if the dir is north or south, false therwise
EWCOMPONENT	True if the dir is east/west, false otherwise
NSDIRFLIP	Flips the dir for north/south directions
EWDIRFLIP	Flips the dir for east/west directions
DIRFLIP	Turns the dir by 180 degrees
MAX_BITFLAG_DIGITS	33554431 (2^24 - 1) is the maximum value our bitflags can reach.

Define Details

#define
ACID_PROOF

acid stuck on it doesn't melt it.

#define
ADMIN_SPAWNED_1

was this spawned by an admin? used for stat tracking stuff.

#define
ALL_CARDINALS

All the cardinal direction bitflags.

#define
BLOBS_ALLOWED

If blobs can spawn there and if it counts towards their score.

#define
CAN_BE_DIRTY_1

If a turf can be made dirty at roundstart. This is also used in areas.

#define
CAVES_ALLOWED

If mining tunnel generation is allowed in this area

#define
CONDUCT_1

conducts electricity (metal etc.)

#define
DIRFLIP
(d)

Turns the dir by 180 degrees

#define
EWCOMPONENT
(d)

True if the dir is east/west, false otherwise

#define
EWDIRFLIP
(d)

Flips the dir for east/west directions

#define
FIRE_PROOF

100% immune to fire damage (but not necessarily to lava or heat)

#define
FLORA_ALLOWED

If flora are allowed to spawn in this area randomly through tunnel generation

#define
FREEZE_PROOF

can't be frozen

#define
HIDDEN_AREA

Hides area from player Teleport function.

#define
HTML_USE_INITAL_ICON_1

Should we use the initial icon for display? Mostly used by overlay only objects

#define
HYPERSPACE_PROOF

Should this object be able to be in hyperspace without being deleted?

#define
INDESTRUCTIBLE

doesn't take damage

#define
INITIALIZED_1

Whether /atom/Initialize() has already run for the object

#define
ISDIAGONALDIR
(d)

Returns true if the dir is diagonal, false otherwise

#define
LANDING_PROOF

Should this object not be destroyed when a shuttle lands on it?

#define
LETPASSTHROW

Let thrown things past us. ONLY MEANINGFUL ON pass_flags_self!

#define
MAX_BITFLAG_DIGITS

33554431 (2^24 - 1) is the maximum value our bitflags can reach.

#define
MOBILITY_MOVE

can move

#define
MOBILITY_PICKUP

can pickup items

#define
MOBILITY_PULL

can pull things

#define
MOBILITY_STAND

can, and is, standing up

#define
MOBILITY_STORAGE

can use storage item

#define
MOBILITY_UI

can use interfaces like machinery

#define
MOBILITY_USE

can hold and use items

#define
MOB_SPAWN_ALLOWED

If mobs can be spawned by natural random generation

#define
NODECONSTRUCT_1

For machines and structures that should not break into parts, eg, holodeck stuff

#define
NOTELEPORT

Are you forbidden from teleporting to the area? (centcom, mobs, wizard, hand teleporter)

#define
NO_LAVA_GEN_1

Blocks lava rivers being generated on the turf

#define
NO_RUINS_1

Blocks ruins spawning on the turf

#define
NSCOMPONENT
(d)

True if the dir is north or south, false therwise

#define
NSDIRFLIP
(d)

Flips the dir for north/south directions

#define
ON_BORDER_1

item has priority to check when entering or leaving

#define
OVERLAY_QUEUED_1

atom queued to SSoverlay

#define
PHASING

When moving, will Cross()/Uncross() everything, but won't stop or Bump() anything.

#define
PREVENT_CLICK_UNDER_1

Prevent clicking things below it on the same turf eg. doors/ fulltile windows

#define
PREVENT_CONTENTS_EXPLOSION_1

should not get harmed if this gets caught by an explosion?

#define
RAD_NO_CONTAMINATE_1

should this object be allowed to be contaminated

#define
RAD_PROTECT_CONTENTS_1

should the contents of this atom be acted upon

#define
RICOCHET_HARD

If the thing can reflect matter (bullets/bomb shrapnel)

#define
RICOCHET_SHINY

If the thing can reflect light (lasers/energy)

#define
SHOCKED_1

Prevents mobs from getting chainshocked by teslas and the supermatter

#define
SHOW_BEHIND_LARGE_ICONS_1

Use when this shouldn't be obscured by large icons, like trees.

#define
UNACIDABLE

acid can't even appear on it, let alone melt it.

#define
UNIQUE_AREA

If false, loading multiple maps with this area type will create multiple instances.

#define
UPDATE_DESC

Update the atom's desc

#define
UPDATE_GREYSCALE

Update the atom's greyscaling

#define
UPDATE_ICON

Update the atom's icon

#define
UPDATE_ICON_STATE

Update the atom's icon state

#define
UPDATE_NAME

Update the atom's name

#define
UPDATE_OVERLAYS

Update the atom's overlays

#define
UPDATE_SMOOTHING

Update the atom's smoothing. (More accurately, queue it for an update)

#define
VALID_TERRITORY

/////////////Area flags\\\\\\\ If it's a valid territory for cult summoning or the CRAB-17 phone to spawn

#define
XENOBIOLOGY_COMPATIBLE

Can the Xenobio management console transverse this area by default?

code/__DEFINES/flags.dm

Define Details

#define ACID_PROOF

#define ADMIN_SPAWNED_1

#define ALL_CARDINALS

#define BLOBS_ALLOWED

#define CAN_BE_DIRTY_1

#define CAVES_ALLOWED

#define CONDUCT_1

#define DIRFLIP (d)

#define EWCOMPONENT (d)

#define EWDIRFLIP (d)

#define FIRE_PROOF

#define FLORA_ALLOWED

#define FREEZE_PROOF

#define HIDDEN_AREA

#define HTML_USE_INITAL_ICON_1

#define HYPERSPACE_PROOF

#define INDESTRUCTIBLE

#define INITIALIZED_1

#define ISDIAGONALDIR (d)

#define LANDING_PROOF

#define LETPASSTHROW

#define MAX_BITFLAG_DIGITS

#define MOBILITY_MOVE

#define MOBILITY_PICKUP

#define MOBILITY_PULL

#define MOBILITY_STAND

#define MOBILITY_STORAGE

#define MOBILITY_UI

#define MOBILITY_USE

#define MOB_SPAWN_ALLOWED

#define NODECONSTRUCT_1

#define NOTELEPORT

#define NO_LAVA_GEN_1

#define NO_RUINS_1

#define NSCOMPONENT (d)

#define NSDIRFLIP (d)

#define ON_BORDER_1

#define OVERLAY_QUEUED_1

#define PHASING

#define PREVENT_CLICK_UNDER_1

#define PREVENT_CONTENTS_EXPLOSION_1

#define RAD_NO_CONTAMINATE_1

#define RAD_PROTECT_CONTENTS_1

#define RICOCHET_HARD

#define RICOCHET_SHINY

#define SHOCKED_1

#define SHOW_BEHIND_LARGE_ICONS_1

#define UNACIDABLE

#define UNIQUE_AREA

#define UPDATE_DESC

#define UPDATE_GREYSCALE

#define UPDATE_ICON

#define UPDATE_ICON_STATE

#define UPDATE_NAME

#define UPDATE_OVERLAYS

#define UPDATE_SMOOTHING

#define VALID_TERRITORY

#define XENOBIOLOGY_COMPATIBLE