UDMF (Universal Doom Map Format)

This page defines the dsda udmf namespace. Most features of this namespace form a subset of the zdoom namespace - they will be understood by both dsda-doom and gzdoom. Some new additions, marked with a :duck:, fill in some gaps. See the things and specials doc for more information about which specials and thing types are supported.

In principle, udmf features supported by both dsda-doom and gzdoom should work the same in each. However, there may be maps that do not work in one port or the other due to differences in the underlying physics, similar to other map formats. Significant deviation in behaviour is likely a bug.

It’s strongly recommended to configure defaults with MAPINFO for cross-port consistency.

DSDA-Doom supports the doom, heretic, hexen, zdoom and dsda namespaces, as well as the XGLN/ZGLN, XGL2/ZGL2 and XGL3/ZGL3 extended node formats. Properties marked with a * are only supported by the opengl renderer.

Linedefs

Property	Description
id integer	Line ID / tag (default -1 in hexen, zdoom and dsda namespaces, 0 otherwise).
v1 integer	Index of the first vertex.
v2 integer	Index of the second vertex.
blocking bool	Blocks things.
blockmonsters bool	Blocks monsters.
blockplayers bool	Blocks players.
blockfloaters bool	Blocks floaters.
blocklandmonsters bool	Block non-flying monsters.
blockprojectiles bool	Blocks projectiles.
blockhitscan bool	Blocks hitscan.
blockuse bool	Blocks use.
blocksound bool	Blocks sound.
blocksight bool	Blocks sight.
blockeverything bool	Blocks everything.
twosided bool	Line has two sides.
dontpegtop bool	Line upper texture is unpegged.
dontpegbottom bool	Line lower texture is unpegged.
secret bool	Line is drawn as one-sided on the map.
dontdraw bool	Line never shows on the map.
mapped bool	Line starts out mapped.
revealed bool	Line starts revealed on the map.
jumpover bool	Line is a strife-style railing.
playercross bool	Can be activated by player cross.
playeruse bool	Can be activated by player use.
monstercross bool	Can be activated by monster cross.
monsteruse bool	Can be activated by monster use.
impact bool	Can be activated by projectile impact.
playerpush bool	Can be activated by player push.
monsterpush bool	Can be activated by monster push.
missilecross bool	Can be activated by projectile cross.
anycross bool	Can be activated by any non-projectile cross.
monsteractivate bool	Can be activated by monsters.
playeruseback bool	Can be activated by player use from the back.
firstsideonly bool	Can only be activated from the front.
passuse bool	Use action passes through the line.
checkswitchrange bool	Switches can only be activated when vertically reachable.
locknumber integer	<ul> <li> 0: No lock. </li> <li> 1: Red key card. </li> <li> 2: Blue key card. </li> <li> 3: Yellow key card. </li> <li> 4: Red skull key. </li> <li> 5: Blue skull key. </li> <li> 6: Yellow skull key. </li> <li> 100: Any key. </li> <li> 101: All 6 keys. </li> <li> 129: Any red key. </li> <li> 130: Any blue key. </li> <li> 131: Any yellow key. </li> <li> 132: Red card or skull. </li> <li> 133: Blue card or skull. </li> <li> 134: Yellow card or skull. </li> <li> 229: Any key of each color. </li> </ul>
repeatspecial bool	Repeatable activation.
special integer	Special action.
arg0 integer	Special argument 0.
arg1 integer	Special argument 1.
arg2 integer	Special argument 2.
arg3 integer	Special argument 3.
arg4 integer	Special argument 4.
arg0str string	Special argument 0 as a string (for certain actions).
sidefront integer	Index of the first sidedef.
sideback integer	Index of the second sidedef.
alpha float	Translucency (default is 1.0).
translucent bool	Line is 75% opague.
transparent bool	Line is 25% opague.
clipmidtex bool	Midtextures are clipped by the floor and ceiling.
* wrapmidtex bool	Midtextures are wrapped.
midtex3d bool	Actors can walk on the midtexture.
midtex3dimpassible bool	The midtexture is impassible.
moreids string	Space-separated list of extra IDs.
automapstyle integer	<ul> <li> 0: Automatic (based on properties). </li> <li> 1: One-sided. </li> <li> 2: Two-sided. </li> <li> 3: Different floor levels. </li> <li> 4: Different ceiling levels. </li> <li> 5: Reserved / unused (3D floor border). </li> <li> 6: Wall with special non-door action. </li> <li> 7: Secret. </li> <li> 8: Unseen. </li> <li> 9: Locked. </li> <li> 10: Intra-level teleporter. </li> <li> 11: Map exit. </li> <li> 12: Unseen secret. </li> <li> 13: Reserved / unused (portal). </li> </ul>
health integer	Line health (for use with damage / death special).
healthgroup integer	Group ID of lines sharing health.
damagespecial bool	Special activated when receiving damage that does not reduce health to 0.
deathspecial bool	Special activated when health is reduced to 0.

Sidedefs

Property	Description
offsetx integer	X texture offset.
offsety integer	Y texture offset.
texturetop string	Upper texture.
texturebottom string	Lower texture.
texturemiddle string	Middle texture.
sector integer	Sector index.
* scalex_top float	X scale for upper texture (default is 1.0).
* scaley_top float	Y scale for upper texture (default is 1.0).
* scalex_mid float	X scale for middle texture (default is 1.0).
* scaley_mid float	Y scale for middle texture (default is 1.0).
* scalex_bottom float	X scale for bottom texture (default is 1.0).
* scaley_bottom float	Y scale for bottom texture (default is 1.0).
offsetx_top float	X offset for upper texture.
offsety_top float	Y offset for upper texture.
offsetx_mid float	X offset for middle texture.
offsety_mid float	Y offset for middle texture.
offsetx_bottom float	X offset for lower texture.
offsety_bottom float	Y offset for lower texture.
light integer	Light level.
light_top integer	Upper texture light level.
light_mid integer	Middle texture light level.
light_bottom integer	Lower texture light level.
lightabsolute bool	Light is absolute rather than relative to the owning sector.
lightabsolute_top bool	Upper texture light is absolute rather than relative to the sidedef light level.
lightabsolute_mid bool	Middle texture light is absolute rather than relative to the sidedef light level.
lightabsolute_bottom bool	Lower texture light is absolute rather than relative to the sidedef light level.
nofakecontrast bool	Disables fake contrast on this sidedef.
smoothlighting bool	Enables smooth fake contrast on this sidedef.
clipmidtex bool	Middle textures are clipped by the floor and ceiling.
* wrapmidtex bool	Middle textures are wrapped.
:duck: xscroll float	X units per frame to scroll line textures.
:duck: yscroll float	Y units per frame to scroll line textures.
:duck: xscrolltop float	X units per frame to scroll upper texture.
:duck: yscrolltop float	Y units per frame to scroll upper texture.
:duck: xscrollmid float	X units per frame to scroll middle texture.
:duck: yscrollmid float	Y units per frame to scroll middle texture.
:duck: xscrollbottom float	X units per frame to scroll lower texture.
:duck: yscrollbottom float	Y units per frame to scroll lower texture.

Vertices

Property	Description
x float	X coordinate.
y float	Y coordinate.

Sectors

Property	Description
id integer	Sector ID / tag.
heightfloor integer	Floor height.
heightceiling integer	Ceiling height.
texturefloor string	Floor texture (flat).
textureceiling string	Ceiling texture (flat).
lightlevel integer	Light level.
special integer	Sector special.
xpanningfloor float	X offset for floor texture.
ypanningfloor float	Y offset for floor texture.
xpanningceiling float	X offset for ceiling texture.
ypanningceiling float	Y offset for ceiling texture.
xscalefloor float	X scale for floor texture.
yscalefloor float	Y scale for floor texture.
xscaleceiling float	X scale for ceiling texture.
yscaleceiling float	Y scale for ceiling texture.
rotationfloor float	Rotation of floor texture in degrees.
rotationceiling float	Rotation of ceiling texture in degrees.
lightfloor integer	Floor light level.
lightceiling integer	Ceiling light level.
lightfloorabsolute bool	Floor light is absolute rather than relative to the sector level.
lightceilingabsolute bool	Ceiling light is absolute rather than relative to the sector level.
gravity float	Sector gravity (default is 1.0).
silent bool	Actors in the sector make no sound.
noattack bool	Monsters in the sector do not attack.
hidden bool	Sector will not be drawn on the map.
moreids string	Space-separated list of extra IDs.
damageamount integer	Damage inflicted by the sector. Negative numbers heal.
damageinterval integer	Interval between damage applications (in tics, default is 32).
leakiness integer	Probability of damage leaking through radiation suit (0 = never, 256 = always).
damagehazard bool	Use strife-style delayed damage behavior.
:duck: xscrollfloor float	X units per frame to scroll the floor.
:duck: yscrollfloor float	Y units per frame to scroll the floor.
:duck: scrollfloormode integer	Floor scroll mode (see table below).
:duck: xscrollceiling float	X map units per frame to scroll the ceiling.
:duck: yscrollceiling float	Y map units per frame to scroll the ceiling.
:duck: scrollceilingmode integer	Ceiling scroll mode (see table below).
:duck: xthrust float	X thrust magnitude (map units per frame^2).
:duck: ythrust float	Y thrust magnitude (map units per frame^2).
:duck: thrustgroup integer	Thrust group (see table below).
:duck: thrustlocation integer	Thrust location (see table below).
:duck: colormap string	Sector colormap.
:duck: skyfloor string	Floor sky texture.
:duck: skyceiling string	Ceiling sky texture.
:duck: frictionfactor float	Friction factor. Ranges from 0 to 1 (default is 0.90625).
:duck: movefactor float	Multiplier for actor ground movement, normally derived from the friction factor (default is 0.03125).

Scroll Mode

Flag	Meaning
1	Affect textures
2	Affect static objects
4	Affect players
8	Affect monsters

Thrust Group

Flag	Meaning
1	Affect static objects
2	Affect players
4	Affect monsters
8	Affect projectiles
16	Affect WINDTHRUST actors

Thrust Location

Flag	Meaning
1	Affect grounded actors
2	Affect airborne actors
4	Affect ceiling actors

Things

Property	Description
id integer	Thing ID / tag.
x float	X coordinate.
y float	Y coordinate.
height float	Z displacement relative to the floor (or ceiling for SPAWNCEILING things).
angle integer	Facing angle in degrees.
type integer	DoomEdNum.
skill1 bool	Spawn in skill 1.
skill2 bool	Spawn in skill 2.
skill3 bool	Spawn in skill 3.
skill4 bool	Spawn in skill 4.
skill5 bool	Spawn in skill 5.
ambush bool	Thing is deaf.
single bool	Spawn in single-player mode.
dm bool	Spawn in deathmatch mode.
coop bool	Spawn in coop mode.
friend bool	Spawn as a friend.
dormant bool	Spawn dormant.
alpha float	Translucency (default is 1.0).
translucent bool	Thing is 66% opague.
invisible bool	Thing is invisible.
special integer	Special action.
arg0 integer	Special argument 0.
arg1 integer	Special argument 1.
arg2 integer	Special argument 2.
arg3 integer	Special argument 3.
arg4 integer	Special argument 4.
arg0str string	Special argument 0 as a string (for certain actions).
countsecret bool	Picking this thing up counts as a secret.
gravity float	Thing gravity. Positive values are multiplicative and negative values are absolute (default is 1.0).
health float	Thing health. Positive values are multiplicative and negative values are absolute (default is 1.0).