DMFlags

• (These DMFlags are ZDoom-specific. Zandronum DMFLAGS can be found here.)

There are 2 CVARs in ZDoom that control certain gameplay flags, namely DMFLAGS and DMFLAGS2. Most only affect Deathmatch games, hence the name, however others only affect Cooperative games and some work in all game modes.

You can set the flags via the in-game menu (Options → Gameplay options), however you can also set the options directly from the command line or console.

At the console, type "dmflags[2] XXXX", where XXXX is a number representing which flags should be toggled. This number is created by adding the values for each argument you want to use.

To make the change effective from the command line, use "+set dmflags[2] XXXX".

The following table lists each of the flags currently available, along with the values needed, which CVAR you should put that value in, and what the default state of each setting is (on or off). Contrary to how one might expect it to function, the setting is simply toggled from the default when the value is set. For example, adding 2048 to DMFLAGS turns Infinite Ammo on, however adding 131072 to DMFLAGS2 turns freelook off, since on is the default state.

In a multiplayer game, only the host can change these settings unless SV_Cheats is 1.

Note that this following table may fall out of date between versions. Always refer to ZDoom's Gameplay options menu for the correct values.
(Up-to-date as of ZDoom 2.9 pre-2175-g4f21ff2 64bit. GZDoom 3.x also shares these same DMFlags and their enumerations.)

DMFlags

Flag Name	CVar	Default	Value	Description
Allow Health (DM)	DMFlags	ON	1	Allows players to pick up items which restore health
Allow Powerups (DM)	DMFlags	ON	2	Allows players to pick up and use powerup items
Weapons Stay (DM)	DMFlags	OFF	4	Weapons aren't removed from the map when a player picks them up; Doesn't work with weapons dropped by enemies
Falling damage (Old)	DMFlags	OFF	8	Damages the player when they fall too far; uses old ZDoom damage calculation
Falling damage (Hexen)	DMFlags	OFF	16	Damages the player when they fall too far; uses Hexen's damage calculation
Falling damage (Strife)	DMFlags	OFF	24	Damages the player when they fall too far; uses Strife's damage calculation
Same Map (DM)	DMFlags	OFF	64	After exiting, the current map is started over instead of proceeding to the next
Spawn Farthest (DM)	DMFlags	OFF	128	Tries to spawn players far away from each other in a Deathmatch game
Force Respawn	DMFlags	OFF	256	Forces the player to respawn a few seconds after death
Allow Armor (DM)	DMFlags	ON	512	Allows players to pick up items which give armor
Allow Exit (DM)	DMFlags	ON	1024	If off, trying to exit the level by normal means will kill the offending player instead
Infinite ammo	DMFlags	OFF	2048	All players have infinite ammo
No monsters	DMFlags	OFF	4096	Monsters placed in the map don't appear; does not stop monsters from spawning via scripts, however
Monsters respawn	DMFlags	OFF	8192	Monsters who are killed automatically respawn; this is the default behavior for the Nightmare skill setting
Items respawn	DMFlags	OFF	16384	Basic items, such as weapons and ammo, respawn after being picked up
Fast monsters	DMFlags	OFF	32768	Monsters move and react faster; this is the default behavior for the Nightmare skill setting
Allow jump	DMFlags	ON	65536	Players are allowed to jump; can be overridden in the MAPINFO lump
Allow freelook	DMFlags	ON	262144	Players are allowed to look up and down; can be overridden in the MAPINFO lump
Allow FOV	DMFlags	ON	1048576	Players are allowed to change their FOV (Field of Vision) from the default
Spawn multi. weapons (Coop)	DMFlags	ON	2097152	If off, weapons marked as Multiplayer Only in the map won't appear in Cooperative games
Allow crouch	DMFlags	ON	4194304	Players are allowed to crouch; can be overridden in the MAPINFO lump
Lose entire inventory (Coop)	DMFlags	OFF	16777216	Players lose everything in their inventory upon death (Coop only)
Keep keys (Coop)	DMFlags	ON	33554432	If off, players lose keys upon death (Coop only)
Keep weapons (Coop)	DMFlags	ON	67108864	If off, players lose all weapons upon death and are given the standard pistol and 50 bullets on respawn (Coop only)
Keep armor (Coop)	DMFlags	ON	134217728	If off, armor is reset to 0% on death (Coop only)
Keep powerups (Coop)	DMFlags	ON	268435456	If off, powerups are lost on death (Coop only)
Keep ammo (Coop)	DMFlags	ON	536870912	If off, ammo is lost on death and the player starts with only 50 bullets (Coop only)
Lose half ammo (Coop)	DMFlags	OFF	1073741824	If on, half of the player's ammo is removed on death (Coop only)

DMFlags2

Flag Name	CVar	Default	Value	Description
Drop weapon	DMFlags2	OFF	2	Drops the player's currently selected weapon on death
No team changing (DM)	DMFlags2	OFF	16	If on, players cannot change teams in a teamplay match after the map has started.
Double ammo	DMFlags2	OFF	64	If on, ammo pickups are doubled.
Degeneration	DMFlags2	OFF	128	Players have their health slowly drained when over 100%
Allow BFG aiming	DMFlags2	ON	256	Players are allowed to aim BFG shots up and down; turn off to prevent the BFG from being fired into the ground to generate instant tracers
Barrels respawn (DM)	DMFlags2	OFF	512	Respawns barrels in a Deathmatch game
Respawn protection (DM)	DMFlags2	OFF	1024	Players who are respawning are invulnerable for a few seconds
Spawn where died (Coop)	DMFlags2	OFF	4096	If on, players respawn at the spot they died, unless they died in an instant-death sector (Sector type 115). (Coop only)
Keep frags gained (DM)	DMFlags2	OFF	8192	If on, players keep their frag count from one map to the next.
No respawn	DMFlags2	OFF	16384	If enabled, players will not be able to respawn after dying.
Lose frag on death (DM)	DMFlags2	OFF	32768	Players lose a frag each time they die.
Infinite inventory	DMFlags2	OFF	65536	Inventory items aren't removed when used.
No monsters to exit	DMFlags2	OFF	131072	Players cannot exit the map until all monsters are killed
Allow automap	DMFlags2	ON	262144	Players are allowed to access their automap
Automap allies	DMFlags2	ON	524288	Players can see other friendly players on the automap
Allow spying	DMFlags2	ON	1048576	Players can use the spynext command to see through their allies' eyes
Chasecam cheat	DMFlags2	OFF	2097152	Players are allowed to use the third-person chase cam
Disallow Suicide	DMFlags2	OFF	4194304	Players cannot die due to self-inflicted damage
Allow Autoaim	DMFlags2	ON	8388608	Player weapons cannot auto aim
Check ammo for weapon switch	DMFlags2	ON	16777216	???
Icon of Sins death kis its spawns	DMFlags2	ON	33554432	???
End sector counts for kill %	DMFlags2	ON	67108864	???
Big powerups respawn	DMFlags2	OFF	134217728	Powerups, such as the Invisibility and Invulnerability, respawn after being picked up
Allow vertical bullet spread	DMFlags2	OFF	1073741824	Vertical bullet spread for weapons is allowed

DMFlags3

Flag Name	CVar	Default	Value	Description
No player cliping (coop)	DMFlags3	OFF	1	Players can walk through and shoot through each other
Share keys (coop)	DMFlags3	OFF	2	Keys and other core items will be given to all players in coop
Local pickups (coop)	DMFlags3	OFF	4	Items are picked up client-side rather than fully taken by the client who picked it up
No local pickups of dropped items (coop)	DMFlags3	OFF	8	Drops from Actors aren't picked up locally
Don't spawn coop-only items (coop)	DMFlags3	OFF	16	Items that only appear in co-op are disabled
Don't spawn coop-only things (coop)	DMFlags3	OFF	32	Any Actor that only appears in co-op is disabled
Remember last weapon (coop)	DMFlags3	OFF	64	When respawning in co-op, keep the last used weapon out instead of switching to the best new one.
Pistol start (coop)	DMFlags3	OFF	128	Take player inventory when exiting to the next level.