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func_brush

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... Icon-Important.png
class hierarchy
CFuncBrush defined in modelentities.cpp
↳CBaseEntity

func_brush is a brush entity available in all Source Source games. It's a generic brush entity with various features.

It combines the functions of func_wall, func_illusionary and func_wall_toggle from Quake Quake and GoldSrc GoldSrc. The older entities can still be used, for an insignificant amount of memory saved.

Note.pngNote:This is a preserved entity in Counter-Strike: SourceHalf-Life 2: DeathmatchDay of Defeat: SourcePortalPortal 2Counter-Strike: Global Offensive.
  • On a new round, its properties including its position will intentionally not reset. You can use logic_auto to emulate resetting it.
  • Killing it removes it forever, as it is not respawned on a new round.
  • It cannot be spawned with a point_template.
  • Parenting this with non preserved entities may have undesirable effects.

Keyvalues


Targetname:
Name (targetname) <string>
The targetname that other entities refer to this entity by.
Solidity (Solidity) <choices>
Used to control the solidity/collision of these brushes.
  • 0: Toggle - The solidity can be toggled together with its visibility.
  • 1: Never Solid
  • 2: Always Solid
Solid BSP (solidbsp) <boolean>
Set this to BSP if the player seems to rotate oddly relative to the surface.
NPC class excluded from collisions (excludednpc) <classname>
If an NPC classname (i.e. npc_zombie) is specified here, NPCs of that type won't collide with these brushes.
Note.pngNote:Not usable with anything in Left 4 Dead series
Invert NPC class exclusion (invert_exclusion) <boolean>
If set, then the excluded NPC class will consider this brush solid, and all other NPC classes will consider it non-solid.

EnableDisable:

Start Disabled (StartDisabled) <boolean>
Stay dormant until activated (with theEnableinput).
Tip.pngTip:If Solidity is Toggle, disabling will also make the entity non-solid.

Internal keyvalues used by VRAD:
Minimum Light Level (_minlight) <float>
Multiplier of minimum amount of light to hit this brush.
Shadows (vrad_brush_cast_shadows) <choices>
Determines if this entity will cast lightmap shadows.
  • 0: No shadows
  • 1: Cast shadows

VisibleBrush:
Render Mode (rendermode) <choices>
Set a non-standard rendering mode on this entity.
Render Modes
  • 0: Normal
  • 1: Color
  • 2: Texture
  • 3: Glow
  • 4: Solid/Alphatest Obsolete
  • 5: Additive
  • 6: Removed, does nothing Obsolete
  • 7: Additive Fractional Frame
  • 8: Alpha Add
  • 9: World Space Glow
  • 10: Don't Render
Render FX (renderfx) <choices>
Various somewhat legacy alpha effects.
Render Effects
Icon-Bug.pngBug:Alpha effects from 0 to 10 are unavailable due to the bug in code in Counter-Strike: Global Offensive Counter-Strike: Global Offensive
  • 0: None
  • 1: Slow Pulse (varies alpha by ±16 over a period of 1.5 s)
  • 2: Fast Pulse (varies alpha by ±16 over a period of 0.4 s)
  • 3: Slow Wide Pulse (varies alpha by ±64 over a period of 1.5 s)
  • 4: Fast Wide Pulse (varies alpha by ±64 over a period of 0.4 s)
  • 5: Slow Fade Away (decreases alpha by -1 per frame/(in all games since Left 4 Dead) Fades out over 4 s)
  • 6: Fast Fade Away (decreases alpha by -4 per frame/(in all games since Left 4 Dead) Fades out over 1 s)
  • 7: Slow Become Solid (increases alpha by +1 per frame/(in all games since Left 4 Dead) Fades in over 4 s)
  • 8: Fast Become Solid (increases alpha by +4 per frame/(in all games since Left 4 Dead) Fades in over 1 s)
  • 9: Slow Strobe (transparent 0.8 s, visible 0.8 s, repeat)
  • 10: Fast Strobe (transparent 0.2 s, visible 0.2 s, repeat)
  • 11: Faster Strobe (transparent 0.09 s, visible 0.09 s, repeat)
  • 12: Slow Flicker (transparent 0.18 s, visible 1.5 s, repeat)
  • 13: Fast Flicker (transparent 0.14 s, visible 0.2 s, repeat)
  • 14: Constant Glow ("NoDissipation;" purpose uncertain—for sprites?) (not in Counter-Strike: Global Offensive)
  • 15: Distort (causes unnatural flickering and position shifting)/(in all games since Left 4 Dead) Fade Out (instant; not very useful outside of code)
  • 16: Hologram (Distort + "distance fade")/(in all games since Left 4 Dead) Fade In (instant; not very useful outside of code)
  • 17: Scale Up ("Explode"/"scale up really big!" causes wild stretching of model parts) (in Source 2013)/Fade Wider Pulse (varies alpha by ±255 over a period over a period of 0.26 s) (in all games since Left 4 Dead)
    Confirm:which branches/games is it available in, and where does it do what?
  • 18: Glow Shell (purpose unclear) (in all games since Source 2013) (not in Counter-Strike: Global Offensive)
    Confirm:what does this do? and which games is it in?
  • 19: Clamp Minimum Scale ("keep this sprite from getting very small (SPRITES only!)") (not in Counter-Strike: Global Offensive)
  • 20: Environmental Rain ("for environmental rendermode, make rain") (in Source 2013) (not in Counter-Strike: Global Offensive)
    Confirm:which games? may be nonfunctional.
  • 21: Environmental Snow ("for environmental rendermode, make snow") (in Source 2013) (not in Counter-Strike: Global Offensive)
    Confirm:which games? may be nonfunctional.
  • 22: Spotlight FX ("TEST CODE for experimental spotlight") (in Source 2013) (not in Counter-Strike: Global Offensive)
  • 23: Ragdoll ("HACKHACK: TEST CODE for signalling death of a ragdoll character;" ragdolls an entity but doesn't kill it) (in Source 2013) (not in Counter-Strike: Global Offensive)
    Confirm:which games? may be nonfunctional?
  • 24: Fade Wider Pulse (varies alpha by ±255 over a period over a period of 0.26 s) (in Source 2013) (not in Counter-Strike: Global Offensive)
  • 25: kRenderFXMax/Fade Near (removed since Left 4 Dead) (not in Counter-Strike: Global Offensive)
Blank image.pngTodo: what does this do? may be nonfunctional
Render FX / Transparency (0–255) (renderamt) <integer 0–255>
Transparency amount; requires a Render Mode other than Normal. 0 is invisible, 255 is fully visible.
Render Color (R G B) (rendercolor) <color255>
Color tint.
Texture Frame (texframeindex) <integer> !FGD
The frame number for any animated textures on this entity.

Shadow:
Disable Shadows (disableshadows) <boolean>
Prevents the entity from creating cheap render-to-texture shadows, or lightmap shadows if the entity is a prop_static. Does not affect shadow mapping.
Disable Receiving Shadows (disablereceiveshadows) <boolean>
Prevent the entity from receiving dynamic shadows on itself.
Shadow Cast Distance (shadowcastdist) <integer> !FGD
Sets how far the entity casts dynamic shadows. 0 means default distance from the shadow_control entity.
Disable ShadowDepth (disableshadowdepth) <boolean> (in all games since Portal 2)
Used to disable rendering into shadow depth (for projected textures) for this entity.
Disable flashlight (disableflashlight) <boolean> (in all games since Portal 2)
Used to disable projected texture lighting and shadows on this entity.
Projected Texture Cache (shadowdepthnocache) <choices> (in all games since Portal 2)
Used to hint projected texture system whether it is sufficient to cache shadow volume of this entity or to force render it every frame instead.
Choices
  • 0 : Default
  • 1 : No cache - render every frame
  • 2 : Cache it - render only once

SystemLevelChoice:

Minimum / Maximum Effect Details Level (mincpulevel / maxcpulevel) <choices> (in all games since Left 4 Dead)
Don't render for players with Effect Details levels that exceed the minimum or maximum.[Note.pngKey names are related to cpu_level cvar used by Effect Details.]
Choices
  • 0: Default ("Low" formincpulevel, "High" formaxcpulevel)
  • 1: Low
  • 2: Medium
  • 3: High
Minimum / Maximum Shader Details Level (mingpulevel / maxgpulevel) <choices> (in all games since Left 4 Dead)
Don't render for players with Shader Details levels that exceed the minimum or maximum.[Note.pngKey names are related to gpu_level cvar used by Shader Details.]
Choices
  • 0: Default ("Low" formingpulevel, "Very High" formaxgpulevel)
  • 1: Low
  • 2: Medium
  • 3: High
  • 4: Very High

DXLevelChoice:

Minimum / Maximum DX Level (mindxlevel / maxdxlevel) <choices> (removed since Left 4 Dead)
The entity will not exist if the engine is running outside the given range of DirectX Versions.
Choices
Warning.pngWarning:If these are used, the object may break when the user switches their DirectX settings.

Flags

  •  [2] : Ignore player +USE - Entity will ignore all Use inputs, including ones from the player.

Inputs

SetExcluded
Change the NPC class that does not collide with the brush.
SetInvert
Whether to reverse the NPC class exclusion rule.
Toggle  !FGD
Toggles the enabled state of the entity

EnableDisable:

Enable
Disable
Enable/disable this entity from performing its task. It might also disappear from view.

Visible Brush:
Alpha <integer 0–255>
Sets the entity's transparency to a number from 0 (invisible) to 255 (fully visible). Requires the entity to have its Render Mode (rendermode) set to a number other than 0.
AlternativeSorting <boolean>
Swaps the rendering order of the entity. Used to attempt to fix sorting problems when rendering, for example an object rendering in front of translucent materials.
Color <color255>
Sets an RGB color for the entity.
SetDamageFilter <targetname>
Sets a filter for this entity for when it receives damage.
EnableDamageForces
Allows the entity to be pushed by damage done to it (usually force amount correlates with the damage done).
DisableDamageForces
Prevents the entity from being pushed by damage done to it.
EnableDraw  (in all games since Portal 2)
Removes EF_NODRAW from the entity.
DisableDraw  (in all games since Portal 2)
Applies EF_NODRAW to the entity. Note that this is different from rendermode 10.
EnableReceivingFlashlight  (in all games since Portal 2)
Makes it so that the entity is lit by env_projectedtextures.
DisableReceivingFlashlight  (in all games since Portal 2)
Prevents the entity from being lit by env_projectedtextures. The shadow made by the texture will still cast.

Reflection:

DisableDrawInFastReflection  (in all games since Portal 2)
Turns off rendering of this entity in reflections when using $reflectonlymarkedentities in water material.
EnableDrawInFastReflection  (in all games since Portal 2)
Turn on rendering of this entity in reflections when using $reflectonlymarkedentities in water material.

Shadow:

DisableShadow
Turn dynamic shadows off for this entity. Identical to applying  EF_NOSHADOW.
EnableShadow
Turn dynamic shadows on for this entity.
DisableReceivingFlashlight  (in all games since Portal 2)
This object will not receive light or shadows from projected textures.
EnableReceivingFlashlight  (in all games since Portal 2)
This object may receive light or shadows from projected textures.

See Also

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