Modding:Constants

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Notice
This article discusses modding for DoomRL version 0.9.9.4. This version is unreleased, so details are subject to change. For information about 0.9.9.3 modding, try looking here

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

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

Colors
BLACK
BLUE
GREEN
CYAN
RED
MAGENTA
BROWN
LIGHTGRAY
DARKGRAY
LIGHTBLUE
LIGHTGREEN
LIGHTCYAN
LIGHTRED
LIGHTMAGENTA
YELLOW
WHITE
MULTIBLUE
MULTIYELLOW
MULTIPORTAL
COLOR_WATER
COLOR_ACID
COLOR_LAVA

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_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_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_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_OPENDOORS This is a flag for the default AI. Beings with this flag will open doors.
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_QUICKSWAP Gives the benefits of the Juggler trait.
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_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_BACKPACK Gives the ammo-stacking benefits of the Backpack powerup.
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_UNIQUENAME This flag makes the game treat the being's name as a proper noun.
BF_IMPATIENT This flag causes packs to be automatically used when picked up as Angel of Impatience.
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_SHOTTYMAN Gives the benefits of the Shottyman trait.
BF_BERSERKER Gives the benefits of the Berserker trait.
BF_DARKNESS For the player, stops exploration from being recorded as in Angel of Darkness.
BF_DUALGUN Gives the benefits of the dualgunner 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_NOMELEE This flag stops the being from doing any type of melee attack.
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_CLEAVE Gives the benefits of the Blademaster trait.
BF_MAXDAMAGE Beings with this flag always roll maximum damage as in Angel of Max Carnage.
BF_SESSILE Beings with this flag cannot move.
BF_VAMPYRE Gives the benefits of the Vampyre trait.
BF_REGENERATE Beings with this flag regenerate one health per second if they have less than 20 health remaining.
BF_ARMYDEAD Gives the benefits of the Army of the Dead trait.
BF_FIREANGEL Gives the benefits of the Fireangel trait.
BF_GUNKATA Gives the benefits of the Gun Kata trait.
BF_AMMOCHAIN Gives the benefits of the Ammochain trait.
BF_MASTERDODGE Gives the benefits of the Dodgemaster trait.
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_USESITEMS This is a flag for the default AI. Beings with this flag will be able to pick up and use items.
BF_PISTOLMAX Gives the benefits of the Sharpshooter trait.
BF_MEDPLUS Allows med-packs to heal beyond 100% health.
BF_HARDY Allows protection to reduce damage all the way to zero.
BF_SCAVENGER Gives the player the Scavenger ability.
BF_INSTAUSE Allows consumable items to be used in 0.1s instead of the usual 1.0s.
BF_STAIRSENSE For the player, reveals the stairs tile(s).
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_MAPEXPERT Makes computer maps work like tracking maps.
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.)
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