Modding:Constants

Constants and Enumerations are common in any game and DoomRL is no exception. Internally, as most programmers are aware, these are integers. But to modders they are all important magic values, looked up here.

Contents 1 Engine Enums 1.1 ItemType 1.2 BodyTarget 1.3 EqSlot 1.4 StatusEffect 1.5 DamageType 1.6 AltFire 1.7 AltReload 1.8 ExplosionFlag 1.9 Level Flag 1.10 Light Flag 2 Constants 2.1 Maximums 2.2 Cellsets 2.3 Challenges 2.4 Difficulty 2.5 PlayerRank 2.6 Player Statistics 2.7 Equip Slots 2.8 Colors 3 Flags 3.1 Item Flags 3.2 Being Flags 3.3 Cell Flags 3.4 Generic Flags 3.5 Empty Flags

Engine Enums

ItemType

Every item has a type that determines how the engine treats it.

TItemType

ITEMTYPE_NONE

ITEMTYPE_RANGED

ITEMTYPE_NRANGED

ITEMTYPE_ARMOR

ITEMTYPE_MELEE

ITEMTYPE_AMMO

ITEMTYPE_PACK

ITEMTYPE_POWER

ITEMTYPE_BOOTS

ITEMTYPE_TELE

ITEMTYPE_LEVER

ITEMTYPE_AMMOPACK

BodyTarget

Sources of damage must specify a body target to determine which sources of armor are used. Inherent armor bonuses always apply.

TBodyTarget
TARGET_INTERNAL	Protection from boots and armor will be ignored.
TARGET_TORSO	Protection from armor counts but protection from boots does not.
TARGET_FEET	Protection from boots counts but protection from armor does not.

EqSlot

It is preferred to use the (equivalent) slot constants.

TEqSlot

EFTORSO

EFWEAPON

EFBOOTS

EFWEAPON2

StatusEffect

Affects specify one of these status effects that will apply a color scheme to all the tiles on the HUD.

TStatusEffect
STATUSNORMAL	No affects
STATUSINVERT	Berserk (sic!)
STATUSRED	Invincibility (sic!)
STATUSGREEN	Environsuit
STATUSBLUE	Light-Amp Goggle effect
STATUSMAGENTA	Unused
STATUSYELLOW	Unused
STATUSGRAY	Unused
STATUSWHITE	Unused

DamageType

Sources of damage usually specify a damage type that determines how the damage regards protection, resistances, gibbing, and other things. For details on the differences between the damage types, look here.

TDamageType

DAMAGE_BULLET

DAMAGE_MELEE

DAMAGE_SHARPNEL [sic]

DAMAGE_ACID

DAMAGE_FIRE

DAMAGE_PLASMA

DAMAGE_SPLASMA

DAMAGE_IGNOREARMOR

AltFire

TAltFire

ALT_NONE

ALT_CHAIN

ALT_THROW

ALT_SCRIPT

ALT_AIMED

ALT_SINGLE

AltReload

TAltReload

RELOAD_NONE

RELOAD_SCRIPT

RELOAD_FULL

RELOAD_DUAL

RELOAD_SINGLE

ExplosionFlag

TExplosionFlag
EFSELFHALF	Deals half damage to the active being.
EFSELFKNOCKBACK	Gives extra knockback to the active being.
EFSELFSAFE	Deals no damage to the active being.
EFAFTERBLINK	Blinks the screen after the explosion finishes.
EFCHAIN	Causes secondary explosions (as the BFG 9000).
EFHALFKNOCK	Causes half the usual knockback.
EFNOKNOCK	Doesn't cause knockback.
EFRANDOMCONTENT	Transmutes some cells in the explosion to the explosion's content cell; the rules is to transmute when damage is greater than 20.
EFNODISTANCEDROP

Level Flag

Level Flags
LF_NOHOMING	Causes homing phase devices to act like normal phase devices.
LF_UNIQUEITEM	Used by the level generation code to keep track of whether a unique item has dropped on the current level (in order to prevent multiple uniques from dropping on one level). This flag also causes a level feeling to occur indicating that a unique item is present.
LF_BONUS	This flag is automatically set for so-called special levels like Halls of Carnage. (It is not set for those special levels like Hellgate that replace normal levels, only by those reached from red stairs.)
LF_SCRIPT	This flag is automatically set for scripted levels, ie levels defined with the level blueprint.
LF_NORESPAWN	Prevents the Nightmare! respawn feature.
LF_NUKED	This flag is automatically set when the level is nuked.
LF_NONUKE	Causes the thermonuclear bomb to have no effect when it is used. It is not respected by other nuke effects.
LF_ITEMSVISIBLE	Allows the player to see all items on the level (as with a Computer Map).
LF_BEINGSVISIBLE	Allows the player to see all beings on the level (as with a Tracking Map).
LF_RESPAWN	Causes monsters to randomly respawn as when playing the game on Nightmare!
LF_SHARPFLUID	???

Light Flag

Light Flags
LFEXPLORED	This flag is set for explored cells. It can be modified to create computer map-like effects or Angel of Darkness-like effects.
LFVISIBLE	This flag is set for cells in the player's current LOS. This flag is automatically recalculated on every player action. It may be useful to manually modify this flag if LOS needs to be updated more often.
LFLIGHTED	This flag is always set on the same cells as LFVISIBLE; both flags must be set for a cell to be visible.
LFDAMAGE	This is a bookkeeping flag for shotgun area-of-effect. Cells are set with this flag if they are calculated as in the shotgun blast but haven't yet been processed.
LFFRESH	This is a bookkeeping flag for explosions. New corpses are set with this flag to keep them from being immediately destroyed. This flag can also be set to make any cell indestructible, but it may be cleared by the engine.
LFPERMANENT	This flag marks a cell as being indestructible.
LFCORNER	This flag only exists in debug builds of DoomRL. It identifies a cell that is visible but that enemies will not return fire from, ie, corner shooting.
LFBLOOD	This flag marks a cell as being bloody. Bloody cells can only have cosmetic differences.
LFNOSPAWN
LFMARKER1
LFMARKER2

Constants

Maximums

Maximums
MAXX	78
MAXY	20
BOSS_LEVEL	25
MAXDEPTH	26
MAXAFFECT	12
MAX_INV_SIZE	22
MAX_EQ_SIZE	4

Cellsets

Cellsets

CELLSET_WALLS

CELLSET_FLOORS

CELLSET_CORPSES

Challenges

Challenges

CHALLENGE_BERSERK

CHALLENGE_MARKSMANSHIP

CHALLENGE_SHOTGUNNERY

CHALLENGE_LIGHTTRAVEL

CHALLENGE_IMPATIENCE

CHALLENGE_HASTE

CHALLENGE_PURITY

CHALLENGE_REDALERT

CHALLENGE_CARNAGE

CHALLENGE_MASOCHISM

CHALLENGE_100

CHALLENGE_PACIFISM

CHALLENGE_HUMANITY

Difficulty

Difficulty

DIFF_EASY

DIFF_MEDIUM

DIFF_HARD

DIFF_VERYHARD

DIFF_NIGHTMARE

PlayerRank

PlayerRank

RANKEXP

RANKSKILL

Player Statistics

Player Statistics

RANK_KILLTOTAL

RANK_KILLMELEE

RANK_KILLPISTOL

RANK_LEVEL

RANK_BADGE

Equip Slots

Equip Slots

SLOT_ARMOR

SLOT_WEAPON

SLOT_BOOTS

SLOT_PREPARED

Colors

Usually, it is possible to specify a foreground color and a background color. Since DoomRL uses 4 bit color, the lowest 4 bits determine the foreground color, and the next 4 bits determine the background color (zero is black). Occasionally, one of these may conflict with one of the special color constants. See Modding:Color for details.

Also, note that the exact color the end-user sees may depend on his system settings. For the basic 16 colors, the valkyrie string coloring escape is noted.

Colors
Color	ID	Valkyrie ID	Looks Like
BLACK	0	@D
BLUE	1	@b
GREEN	2	@g
CYAN	3	@c
RED	4	@r
MAGENTA	5	@v
BROWN	6	@n or @N
LIGHTGRAY	7	@l
DARKGRAY	8	@d
LIGHTBLUE	9	@B
LIGHTGREEN	10	@G
LIGHTCYAN	11	@C
LIGHTRED	12	@R
LIGHTMAGENTA	13	@V
YELLOW	14	@y or @Y
WHITE	15	@L

Colors
Color	ID	Looks Like						Comments
MULTIBLUE	17							Missile only
MULTIYELLOW	18							Missile only
MULTIPORTAL	20							Map object only
COLOR_WATER	21							Map object only
COLOR_ACID	22							Map object only
COLOR_LAVA	23							Map object only

Flags

Item Flags

Item Flags
IF_CHAMBEREMPTY	For IF_PUMPACTION weapons, this flag indicates whether ammo is in the chamber or not.
IF_UNIQUE	This flag is set for unique items. Unique items add a player history message when picked up as well as doing a screen blink. Unique items are also not destroyable.
IF_EXOTIC	This flag is set for exotic items. This is used by the game to compile the special items list.
IF_MODIFIED	This flag is automatically set for items that have been modded.
IF_HALFKNOCK	If a weapon with this flag is wielded, all knockback against the wielder will be halved.
IF_GLOBE	This is a marker flag for items that are disallowed in Angel of Masochism.
IF_CURSED	Items with this flag cannot be unequipped.
IF_RECHARGE	Items with this flag regenerate ammo or durability as with a Nano Pack.
IF_CLEAVE	Items with this flag give the wielder the benefits of the Blademaster trait (as Butcher's Cleaver).
IF_NOAMMO	Items with this flag don't consume ammo when fired. For the player, a weapon still must have ammo loaded to be fired.
IF_NECROCHARGE	Items with this flag recharge as with IF_RECHARGE, but reduce the weilder's health by 1 for each point of recharge (as with Necroarmor).
IF_PUMPACTION	Ranged weapons with this flag must be pumped after each shot as with the combat shotgun.
IF_SINGLERELOAD	Ranged weapons with this flag only reload one ammo at a time (as with the missile launcher) instead of all at once.
IF_PISTOL	This flag indicates whether the weapon counts as a pistol for the purposes of the Son of a Gun and Dualgunner traits. (For kill counting, the weapon group is used instead.)
IF_SHOTGUN	This flag causes a weapon's missile to be treated as a shotgun id rather than a missile id. Also, this flag is used to decide if the Shottyman trait should count the weapon as a shotgun. (For kill counting, the weapon group is used instead.)
IF_SPREAD	Ranged weapons with this flag fire three shots at once (as the tristar blaster and mancubus natural weapon). In 0.9.9.4, this flag is a bit buggy.
IF_SCATTER	For ranged weapons with this flag, each shot is aimed at a different cell near the real target (as with the BFG 10K).
IF_MODABLE	Allows a unique item to be fully modded.
IF_SINGLEMOD	Restricts the number of allowed mods on the item to one. (For unique items, this must be used along with IF_MODABLE.)
IF_DUALSHOTGUN	For multi-shot weapons, this flag eliminates all delay between shots and causes the firing sound to play only once.
IF_AIHEALPACK	This flag allows the default AI to pick up and use the item.
IF_NOUNLOAD	Ranged weapons with this flag cannot be unloaded.
IF_NUKERESIST	Items with this flag will not be destroyed by nuking.
IF_NODROP	Items with this flag will not be dropped when the carrier/wearer dies.
IF_AUTOHIT	Weapons with this flag never miss (as with items modified by a sniper weapon pack).
IF_SETITEM	This flag is automatically set for items that specify a set.
IF_NODURABILITY	Armors and boots with this flag have no durability (as with items modified by an Onyx Armor Pack).
IF_NODESTROY	Armors with this flag cannot be destroyed by damage. Also, items on the ground with this flag will not be destroyed by explosions.
IF_NONMODABLE	Items with this flag cannot be modded.
IF_NOREPAIR	Armors and boots with this flag cannot be repaired by normal methods (ie item:fix). Directly setting item.durability bypasses this prohibition. Usually set for shields.
IF_ASSEMBLED	This flag is automatically set on assemblies. Items with this flag cannot be used for the base of any other assembly.
IF_DESTROY	Weapons with this flag will be destroyed after firing (with a default message). The flag is used for overcharged weapons.
IF_BLADE	Weapons with this flag are considered blades for the purpose of activating the flags used for Malicious Blades.
IF_DESTRUCTIVE	Weapons with this flag deal double damage to cells (if they can hurt cells, see CF_FRAGILE.)
IF_ROCKET	Any weapon with this flag defined as a rocket launcher.
IF_NODEGRADE	Armor's or boots' resistances aren't degraded due to damage taken. Usually set for shields.
IF_THROWDROP	Combat knife has this flag in 0.9.9.7.
IF_FARHIT
IF_UNSEENHIT

Being Flags

Being Flags
BF_BOSS	Killing this being will end the game. Other boss-only actions are usually scripted in Lua based on this flag.
BF_ENVIROSAFE	Hazard tiles should not affect this being. Engine pathfinding algorithms are affected. Protection is not engine based; modders must make custom hazard cells check for this flag to prevent damage.
BF_CHARGE	Hazard tiles do not concern this being. Engine pathfinding algorithms are affected.
BF_OPENDOORS	This being can open doors. Engine pathfinding algorithms are affected.
BF_NODROP	This being will not drop their inventory or equipment when they die.
BF_NOEXP	This being will not award experience to the player. Often used to prevent exp farming.
BF_QUICKSWAP	This being has the benefits of the Juggler trait.
BF_HUNTING	This being always knows where the player is and will hunt them down. This flag is not engine based; modders must make custom AIs respect this flag before it will have any effect.
BF_BACKPACK	This being has the ammo stacking benefits of the Backpack powerup.
BF_UNIQUENAME	This being's name is a proper noun and UI messages will treat it as such.
BF_IMPATIENT	This being will consume packs automatically. This flag is the main component of the Angel of Impatience challenge.
BF_SHOTTYMAN	This being will reload shotguns on the move as part of the Shottyman trait. A shotgun is defined as any weapon with the IF_SHOTGUN flag.
BF_ROCKETMAN	This being will reload rocket launchers on the move as part of the Shottyman trait. A rocket launcher is defined as any weapon with the IF_ROCKET flag.
BF_BERSERKER	This being has the benefits of the Berserker trait.
BF_DARKNESS	This being does not record exploration. This is one component of the Angel of Darkness challenge.
BF_DUALGUN	This being has the benefits of the Dualgunner trait.
BF_POWERSENSE	This being can sense powerups, one of the benefits of the first level Intuition trait.
BF_BEINGSENSE	This being can sense enemies, one of the benefits of the second level Intuition trait.
BF_LEVERSENSE1	This being can sense if a lever is harmful, beneficial, or neutral, one of the benefits of the first level Intuition trait.
BF_LEVERSENSE2	This being can sense the exact effect of a lever, one of the benefits of the second level Intuition trait.
BF_NOMELEE	This being cannot perform a melee attack. This is only seen on the Angel of Pacifism challenge and is probably not safe to use on an enemy. A custom AI can achieve a better effect.
BF_CLEAVE	This being has the benefits of the Blademaster trait.
BF_MAXDAMAGE	This being always rolls maximum damage. Every being gets this flag in the Angel of Max Carnage challenge.
BF_SESSILE	This being cannot move. Only seen with the Gothic Arms set. This flags is not correctly implemented for non-player creatures; if you want an immobile enemy use a custom AI instead.
BF_VAMPYRE	This being has the benefits of the Vampyre trait.
BF_REGENERATE	This being regenerates one health per second if they have less than 20 health remaining. This used to be the benefit of a trait called Regenerator but it is no longer used anywhere in DoomRL.
BF_ARMYDEAD	This being has the benefits of the Army of the Dead trait.
BF_FIREANGEL	This being has the benefits of the Fireangel trait.
BF_GUNKATA	This being has the benefits of the Gun Kata trait.
BF_AMMOCHAIN	This being has the benefits of the Ammochain trait.
BF_MASTERDODGE	This being has the benefits of the Dodgemaster trait.
BF_INV	This being will not take any damage. This is the main component of the Invulnerable status effect. Be careful not to directly set an invincible being's HP to zero.
BF_BERSERK	This being has the face pounding benefits of the Berserk status effect. The speed and resistance bonuses are not included.
BF_NORUNPENALTY	This being has the benefits of the Running Man trait.
BF_PISTOLMAX	This being has the benefits of the Sharpshooter trait.
BF_MEDPLUS	This being can heal beyond 100% with med-packs alone as part of the Survivalist trait. This flag is not engine based; modders must make custom sources of healing respect this flag.
BF_HARDY	This being can reduce damage all the way down to zero as part of the Survivalist trait. Normally all attacks do a minimum of one damage regardless of how much armor you have.
BF_SCAVENGER	This being has the benefits of the Scavenger trait.
BF_INSTAUSE	This being uses consumable items in 0.1s instead of the usual 1.0s. Part of the Technician class bonus.
BF_STAIRSENSE	This being always knows the location of stair tiles. Part of the Scout class bonus.
BF_POWERBONUS	Powerup effects last longer for this being. The exact bonus depends on difficulty. Part of the Marine class bonus.
BF_MAPEXPERT	Computer maps will work like tracking maps for this being. Part of the Technician class bonus. This flag is not engine based obviously.
BF_DUALBLADE	This being can attack with two melee weapons at once with each weapon attacking in half the time. Part of the Malicious Blades trait. A bladed weapon is defined as any weapon with the IF_BLADE flag.
BF_BLADEDEFEND	This being gains extra resistances by having a bladed weapon in the prepared. Part of the Malicious Blades trait. A bladed weapon is defined as any weapon with the IF_BLADE flag.
BF_BULLETDANCE	This being has the benefits of the Bullet Dance trait.
BF_SHOTTYHEAD	This being has the benefits of the Shottyhead trait.
BF_ENTRENCHMENT	This being has the benefits of the Entrenchment trait.
BF_MODEXPERT	This being can mod unique items. Part of the Technician class bonus.
BF_SELFIMMUNE	This being cannot be hurt by its own attack. Arch-Viles and Cyberdemons are two such beings.
BF_KNOCKIMMUNE	This being is immune to knockback. Largely a characteristic of boss level enemies.
BF_NOHEAL	This being cannot be healed. This is only seen on the Angel of Masochism challenge. This flag is not engine based; modders must make custom sources of healing respect this flag.
BF_GUNRUNNER	This being has the benefits of the Gunrunner trait.

Some flags have no effect on non-player beings. Most trait flags are that way.

Cell Flags

Cell Flags
CF_BLOCKMOVE	Cells with this flag block movement and projectiles.
CF_BLOCKLOS	Cells with this flag block vision.
CF_CORPSE	This flag is set for autogenerated corpses. Only cells with this flag can be ressurected. The being created by resurrection can be specified by setting the cell's effect parameter to 100 + being.id. Note that the "corpse" cell does not have this flag. To include this cell, use Level.is_corpse.
CF_NOCHANGE	Currently, this flag is only checked by the map powerups. The map powerups reveal cells with this flag (as well as CF_BLOCKMOVE cells).
CF_NORUN	The run command (not the run tactic) will stop the player before he steps on a cell with this flag.
CF_PUSHABLE	Cells with this flag can be pushed (like barrels in DoomRL). Pushing is mostly hard-coded.
CF_FRAGILE	Cells with this flag can be destroyed by any damage type (assuming they have HP or armor) whereas cells cannot usually be damaged by bullet, melee, shrapnel, or piercing damage.
CF_HAZARD	This flag should be set for cells that are dangerous to step on. The AI will usually avoid these tiles. This flag is also used with the EF_NOHARM empty flag.
CF_OVERLAY	This flag is related to the graphical version. Overlays are drawn OVER a base tile.
CF_MULTISPRITE	This flag is related to the graphical version. Cells which have rotations (walls being the main example) need this flag.
CF_STICKWALL	This flag is related to the graphical version. When a multisprite wall is calculating its rotations it takes stickwalls into account. That way wall-like cells (such as doors) will be attached to the multisprite walls correctly.
CF_LIQUID	This flag is used to mark liquid cells (water, acid, lava). Currently, it is only checked by Level.flood which will flood over CELLSET_FLOORS cells and CF_LIQUID cells.
CF_OPENABLE	This flag indicates that the cell can be opened. What happens when the cells is opened is determined by the cell's OnAct hook.
CF_CLOSABLE	As CF_OPENABLE, but for the close command.
CF_RUNSTOP	Cells with this flag will stop the player's run when the player is orthogonally adjacent. Contrast with CF_NORUN.
CF_NUKABLE	Cells with this flag will be destroyed be a nuke even if they are normally not destructible.
CF_CRITICAL	Cells with this flag should usually not be altered or destroyed be the game. It is currently only checked by the flooding level event. Stairs have this flag.
CF_HIGHLIGHT	This flag determines whether the light or dark color variant is used when a StatusEffect overlay is being applied.
CF_BLOODY	When a being walks on one of these cells, its feet won't become less bloody. (See CF_BLOODY.)
CF_VBLOODY	When a being walks on one of these cells, its feet will become bloody and it will temporarily leave a trail of blood.
CF_STAIRS	Stairs are marked with this flag. (New stairs cells should include this.)
CF_RAISABLE

Generic Flags

Generic Flags
F_OVERLAY	This flag is related to the graphical version.

Empty Flags

Empty flags are used with various functions to control the selection of random coords.

Empty Flags
EF_NOITEMS	Excludes cells that contain an item.
EF_NOBEINGS	Excludes cells that contain a being.
EF_NOBLOCK	Excludes cells that block movement (CF_BLOCKMOVE).
EF_NOVISION	Excludes cells that block vision (CF_BLOCKLOS).
EF_NOSTAIRS	Excludes stairs (cells with an OnExit hook).
EF_NOTELE	Excludes cells with a teleporter (an item with ITEMTYPE_TELE).
EF_NOHARM	Excludes hazardous cells (CF_HAZARD).
EF_NOSAFE	Excludes cells that are too near to the player (currently the threshold is less than or equal to distance of 5).
EF_NOSPAWN	Excludes cells with LF_NOSPAWN.