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 LightFlag 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 Generic Flags 3.2 Cell Flags 3.3 Being Flags 3.4 Item Flags 3.5 Level Flags 3.6 Empty Flags 3.7 Missile 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

STATUSINVERT

STATUSRED

STATUSGREEN

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_IGNOREARMOR

AltFire

TAltFire

ALT_NONE

ALT_CHAIN

ALT_THROW

ALT_SCRIPT

ALT_AIMED

ALT_SINGLE

ALT_WHIRLWIND

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.

LightFlag

TLightFlag
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 book-keeping 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 book-keeping flag for explosions. New corpses are set with this flag to keep them from being immediately destroyed. This flag can be set to make any cell indestructible, but it may be cleared by the engine.
LFNOSPAWN	Cells with this flag are counted as non-empty by the EF_NOSPAWN empty flag.

Constants

Maximums

Maximums
MAXX	78
MAXY	20
BOSS_LEVEL	25
MAXDEPTH	26
MAXAFFECT	5
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.

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
BLACK		@D
BLUE		@b
GREEN		@g
CYAN		@c
RED		@r
MAGENTA		@v
BROWN		@n or @N
LIGHTGRAY		@l
DARKGRAY		@d
LIGHTBLUE		@B
LIGHTGREEN		@G
LIGHTCYAN		@C
LIGHTRED		@R
LIGHTMAGENTA		@V
YELLOW		@y or @Y
WHITE		@L
MULTIBLUE		Randomly chosen from BLUE, LIGHTBLUE, and WHITE. Only works for missiles.
MULTIYELLOW		Randomly chosen from YELLOW, LIGHTGREEN, and WHITE. Only works for missiles.
MULTIPORTAL		Cycles between LIGHTMAGENTA, MAGENTA, and WHITE. Only works for things displayed in the map.
COLOR_WATER		Alternates between BLUE and LIGHTBLUE. Only works for things displayed in the map.
COLOR_ACID		Alternates between GREEN and LIGHTGREEN. Only works for things displayed in the map.
COLOR_LAVA		Alternates between RED and YELLOW. Only works for things displayed in the map.

Flags

Generic Flags

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

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.
CF_MULTISPRITE	This flag is related to the graphical version.
CF_STICKWALL	This flag is related to the graphical version.
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.)

Being Flags

Being Flags
BF_INV	Stops the being from taking any damage. (Directly setting the being's HP can circumvent this.)
BF_BERSERK	Gives the damage reduction and melee damage bonus of berserk. (The speed bonus is not included.)
BF_ENVIROSAFE	Beings with this flag are immune to damage from acid and lava tiles. (New hazardous tiles will have to check for this flag to respect it.)
BF_BACKPACK	Gives the ammo-stacking benefits of the Backpack powerup.
BF_POWERBONUS	Extends the duration of powerups as the Marine class bonus. New powerups will have to check for this flag (or use the provided helper function) to respect it.
BF_STAIRSENSE	For the player, reveals the stairs tile(s) as the Scout class bonus.
BF_INSTAUSE	Allows consumable items to be used in 0.1s instead of the usual 1.0s, as the Technician class bonus.
BF_MAPEXPERT	Makes computer maps work like tracking maps, as the Technician class bonus.
BF_QUICKSWAP	Gives the benefits of the Juggler trait.
BF_BERSERKER	Gives the benefits of the Berserker trait.
BF_DUALGUN	Gives the benefits of the dualgunner trait.
BF_MASTERDODGE	Gives the benefits of the Dodgemaster trait.
BF_SHOTTYMAN	Gives the benefits of the Shottyman trait.
BF_POWERSENSE	For the player, shows the locations of all powerups (as the first level of the Intuition trait).
BF_BEINGSENSE	For the player, shows the locations of enemies (as the second level of the Intuition trait).
BF_LEVERSENSE1	For the player, gives partial information about levers (as the first level of the Intuition trait).
BF_LEVERSENSE2	For the player, shows the exact effect of levers (as the second level of the Intuition trait).
BF_VAMPYRE	Gives the benefits of the Vampyre trait.
BF_ARMYDEAD	Gives the benefits of the Army of the Dead trait.
BF_AMMOCHAIN	Gives the benefits of the Ammochain trait.
BF_MEDPLUS	Allows med-packs to heal beyond 100% health (part of the Survivalist trait).
BF_HARDY	Allows protection to reduce damage all the way to zero (part of the Survivalist trait).
BF_CLEAVE	Gives the benefits of the Blademaster trait.
BF_GUNKATA	Gives the benefits of the Gun Kata trait.
BF_PISTOLMAX	Gives the benefits of the Sharpshooter trait.
BF_FIREANGEL	Gives the benefits of the Fireangel trait.
BF_SCAVENGER	Gives the benefits of the Scavenger trait (useless on anything other than the player).
BF_IMPATIENT	This flag causes packs to be automatically used when picked up as Angel of Impatience.
BF_DARKNESS	For the player, stops exploration from being recorded as in Angel of Darkness.
BF_MAXDAMAGE	Beings with this flag always roll maximum damage as in Angel of Max Carnage.
BF_NOHEAL	This is a marker flag that stops healing effects from working as in Angel of Masochism. New sources of healing will have to check for this flag in order to respect it.
BF_SESSILE	Beings with this flag cannot move.
BF_NOMELEE	This flag stops the being from doing any type of melee attack.
BF_REGENERATE	Beings with this flag regenerate one health per second if they have less than 20 health remaining.
BF_UNIQUENAME	This flag makes the game treat the being's name as a proper noun.
BF_ENTERBOSS1	This is a flag for the player that helps determine which victory message to use in the mortem.
BF_KILLBOSS1	This is a flag for the player that helps determine which victory message to use in the mortem.
BF_ENTERBOSS2	This is a flag for the player that helps determine which victory message to use in the mortem.
BF_KILLBOSS2	This is a flag for the player that helps determine which victory message to use in the mortem.
BF_RETALITATE	This is a flag for the default AI that will cause to hunt the player as BF_HUNTING, but will randomly expire if the player is not within line of sight. This flag is set when beings are attacked regardless of the AI, but it isn't used by the lua AIs.
BF_CHARGE	This is a flag for the AI. Beings with this flag are willing to walk through hazardous cells to reach the player. (This applies to the default AI, and the direct_seek method.)
BF_DISTANCE	This is a flag for the default AI. Beings with this flag will not try to approach the player (but the will still do melee attacks if they end up next to the player).
BF_HUNTING	This is a flag for the default AI. Beings with this flag will search out the player even if he is not in their line of sight.
BF_OPENDOORS	This is a flag for the default AI. Beings with this flag will open doors.
BF_USESITEMS	This is a flag for the default AI. Beings with this flag will be able to pick up and use items.
BF_NODROP	Beings with this flag will not drop their inventory or equipment when they die.
BF_NOEXP	Beings with this flag will not award experience to the player.
BF_BOSS	Killing this monster will cause the same message as killing the cyberdemon as well as the cyberdemon explosion and ending the game. This automatically sets BF_HUNTING as well. Also provides knockback immunity and prevents the being from taking damage on its own turn.
BF_JC	When used with BF_BOSS, changes the explosion to blue and changes the message to indicate that JC was killed instead of the cyberdemon.
BF_LUAAI	This flag is automatically set for beings that use lua AI.

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. Items with this flag have "modified " prepended to their names.
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.
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.

Level Flags

Level Flags
LF_MELEEONLY	If this flag is set, the only melee weapons can be used as in the Unholy Cathedral. (This applies only to the player.)
LF_NOHOMING	This flag causes homing phase devices to act like normal phase devices.
LF_UNIQUEITEM	This flag is 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_NORESPAWN	This flag prevents the Nightmare! respawn feature.
LF_NUKED	This flag is automatically set when the level is nuked.
LF_NONUKE	This flag causes the thermonuclear bomb to have no effect when it is used. It is not respected by other nuke effects.
LF_ITEMSVISIBLE	This flag allows the player to see all items on the level (as with a Computer Map).
LF_BEINGSVISIBLE	This flag allows the player to see all beings on the level (as with a Tracking Map).
LF_RESPAWN	This flag causes monsters to randomly respawn as when playing the game on Nightmare!

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.

Missile Flags

Missile Flags
MF_RAY	This flag changes the missile's animation. The delay is ignored and all cells in the path are drawn with the projectile (as with the Shambler's ranged attack).
MF_HARD	This flag causes the missile to continue after hitting a being (as with the Railgun).
MF_EXACT	This flag causes the missile to stop at the targeted square (as with the Revenant's Launcher).
MF_IMMIDATE	This flag causes the missile to always hit the targetted square (although it may still miss a being standing on that square). The missile does not respect line of fire -- it will go through walls (although AI controlled beings using such a missile will still respect line-of-sight). The animation for the missile will only display over the targeted cell. (Arch-viles' natural weapon uses this flag.)