Worldspawn

Worldspawn (or just "the world") is the single entity that stores the noninteractive parts of a map, alongside some global configuration options. In other words:

• Brushes (except those used by entities)
• Static props
• Map name, skybox, contexts...
  Tip:Access these properties in Hammer with Main menu > Map > Map properties...

Some other notes:

• There can be only one. (Since Hammer doesn't allow worldspawn to be created directly it's very difficult for this rule to be broken.)
• Damage from the environment and suicide is ordinarily attributed to the world.
• Constraints can be assigned to worldspawn by not specifying a name for their subject/target.

See also

• CWorld
• Skybox

Related entities

There are a few other 'map property' entities which should not have more than one instance in a map. They are:

Skybox

env_fog_controller

light_environment

shadow_control

env_sun (

Todo: actually, multiple suns might be allowable

)

sky_camera (unique location)

Optimisation

game_ragdoll_manager

game_weapon_manager

game_gib_manager

water_lod_control

Logic

game_end

info_intermission (unique location)

env_global

Keyvalues

message <string>

Map's description / title. Doesn't seem to be used anywhere any more.

skyname <sky material prefix>

Skybox material. See Sky List.

chaptertitle <string>

Chapter Title that appears on screen when this level starts.

startdark <bool>

Fades the map in

Bug:The fade is carried out every time the map loads, including when loading from a saved game. Use env_fade instead.  [todo tested in ?]

gametitle <bool>

Should the game's title appear on-screen when the map starts?

newunit <bool>

Used to clear out saved data of previous maps, which reduces saves' filesize. Only enable if the player cannot return to any previous map.

maxoccludeearea <float>

Prevents occlusion testing for entities that take up more than X% of the screen.

minoccluderarea <float>

Prevents this occluder from being used if it takes up less than X% of the screen.

maxpropscreenwidth <float>

Number of pixels wide at which all props in the level start to fade (-1 = use fademaxdist). This number is ignored if the prop has a specific fade distance specified.

minpropscreenwidth <float>

Minimum number of pixels wide at which the prop is visible (0 = don't fade out). This number is ignored if the prop has a specific fade distance specified.

detailvbsp <file> (in all games since )

Detail.vbsp file to use for creating detail props. Must be located in game root.

detailmaterial <material> (in all games since )

Detail material file

coldworld <bool>

If set, Day of Defeat: Source player models will emit breath particles from their mouth attachments. No effect elsewhere.

ResponseContext:

Response Contexts (ResponseContext) <string>

Pre-defined response system context{s} for this entity. Format is key:value,key:value,... When this entity speaks, the list of keys & values will be passed to the response rules system.

Inputs

ResponseContext:

AddContext <stringRedirectInput/string>

Adds to the entity's list of response contexts. Format is <key>:<value>.

RemoveContext <stringRedirectInput/string>

Remove a context from this entity's list. The name should match the key of an existing context.

ClearContext

Removes all contexts from this entity's list.