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momentary_rot_button

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momentary_rot_button is a brush entity available in all Source Source games.

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It is designed to be used for rotating wheels, where the player can rotate them to arbitrary positions before stopping.

Icon-Bug.pngBug:If the Toggle (Disable Auto Return) flag is enabled and usage is paused, the button will start turning backwards the next time it is used. It will still fire the "OnPressed" outputs as usual, but just rotating the other way.

The button will turn backwards until the starting position is reached. At which point the button will look like it stops turning, but it can still be held down until theOnReachedPosition output will fire.

PlacementTip.pngWorkaround: Disable the Toggle (Disable Auto Return) flag and set the Auto-return speed to 0.00000000000000000000000000001. That way it does, technically, turn backwards on its own, but it seemingly stands still. Allowing the button to keep turning forwards when used again.
class hierarchy
CMomentaryRotButton defined in buttons.cpp
CRotButton
CBaseButton
CBaseToggle
CBaseEntity


Keyvalues

Speed (deg/sec) (???) <integer>
The amount, in degrees, that the wheel turns per second.
Master (Obsolete) (???) <string>
Legacy support: The name of a master entity. If the master hasn't been activated, this button cannot be used.
Sounds (???) <choices>
Sound to play after being turned.
Value Description
0 None
1 Big zap & Warmup
2 Access Denied
3 Access Granted
4 Quick Combolock
5 Power Deadbolt 1
6 Power Deadbolt 2
7 Plunger
8 Small zap
9 Keycard Sound
21 Squeaky
22 Squeaky Pneumatic
23 Ratchet Groan
24 Clean Ratchet
25 Gas Clunk
Distance (???) <integer>
The maximum amount, in degrees, that the wheel is allowed to rotate.
Auto-return speed (???) <integer>
If the 'Toggle' spawnflag is not set, the speed at which the wheel auto-returns when left alone, in degrees per second.
Minimum Light Level (???) <string>
The minimum level of ambient light that hits this brush.
Start Position (???) <float>
Postion when spawned. The value is a range between 0.0 and 1.0, where 0 is the unrotated position and 1 is the rotated position + 'Distance'.
Start Direction (???) <choices>
Which way the wheel turns.
  • -1 : Forward
  • 1 : Backward
Solid BSP (???) <boolean>
Set this if this brush is in hierarchy with a moving object of some kind, and the player can stand on this brush.

Targetname:

Name (targetname) <string>
The targetname that other entities refer to this entity by.

Parentname:
Parent (parentname) <targetname>
Specifies a movement parent. An entity will maintain its initial offset from its parent. An attachment point can be added to the end of the name, separated by a comma.

Origin:
Origin (X Y Z) (origin) <origin>
The position of this entity's center in the world. Rotating entities typically rotate around their origin.

Angles:

Pitch Yaw Roll (Y Z X) (angles) <angle>
This entity's orientation in the world. Pitch is rotation around the Y axis, yaw is the rotation around the Z axis, roll is the rotation around the X axis.

RenderFields:

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>
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.
Disable Receiving Shadows (disablereceiveshadows) <boolean>
Prevent the entity from receiving shadows on itself.


Flags

  •  [1] : Not Solid
  •  [32] : Toggle (Disable Auto Return)
  •  [64] : X Axis
  •  [128] : Y Axis
  •  [1024] : Use Activates
  •  [2048] : Starts locked
  •  [8192] : Jiggle when used while locked
  •  [16384] : Non-Solid (only in Garry's Mod)
      
    Note.pngNote:doesn't do anything

Inputs

Lock
Lock the button, preventing it from functioning.
Unlock
Unlock the button, allowing it to function.
SetPosition <string>
Move to a position. The parameter must be a value between 0 and 1, where 0 is the unrotated position and 1 is the rotated position + 'Distance'.
SetPositionImmediately <string>
Immediately teleport to a position. The parameter must be a value between 0 and 1, where 0 is the unrotated position and 1 is the rotated position + 'Distance'.
_DisableUpdateTarget
Prevent the Position output from firing. Used to implement "jiggle when locked" by firing SetPosition inputs.
_EnableUpdateTarget
Allow the Position output to fire again. Used to implement "jiggle when locked" by firing SetPosition inputs.

Base:
AddContext <string>
Adds to the entity's list of response contexts. See Context.
AddOutput <string>
Assigns a new keyvalue/output on this entity. For keyvalues, some rely on extra necessary code to be ran and won't work if its simply just changed through this input. There is a strict format that must be followed:
// Format of changing KeyValues: "AddOutput [key] [value]"
//// Raw text:
"OnUser1" "!self,AddOutput,targetname new_name"

// Format of adding an Output: "AddOutput {targetname}:{inputname}:{parameter}:{delay}:{max times to fire, -1 means infinite}"
//// Raw text:
"OnUser1" "!self,AddOutput,OnUser1:SetParent:!activator:0.0:-1"
// Arguments can be left blank, but the empty blank should still be contained.
//// Raw text:
"OnUser1" "!self,AddOutput,OnUser1:ClearParent::0.0:-1"
ClearContext
Removes all contexts from this entity's list.
ClearParent
Removes this entity from the the movement hierarchy, leaving it free to move independently.
FireUser1 to FireUser4
Fires the respectiveOnUseroutputs; see User Inputs and Outputs.
Kill
Removes this entity and any entities parented to it from the world.
KillHierarchy
Functions the same as Kill, although this entity and any entities parented to it are killed on the same frame, being marginally faster thanKillinput.
RemoveContext <string>
Remove a context from this entity's list. The name should match the key of an existing context.
SetParent <string>
Move with this entity. See Entity Hierarchy (parenting).
SetParentAttachment <string>
Change this entity to attach to a specific attachment point on its parent. The entity will teleport so that the position of its root bone matches that of the attachment. Entities must be parented before being sent this input.
SetParentAttachmentMaintainOffset <string>
As above, but without teleporting. The entity retains its position relative to the attachment at the time of the input being received.
Use  !FGD
Same as a player invoking +use; no effect in most cases.
DispatchResponse <string> !FGD
Dispatches a response to the entity. See Response and Concept.
DispatchEffect <string> (removed since Left 4 Dead) !FGD
Dispatches a special effect from the entity's origin; See also List of Client Effects. Replaced by the particle system since Left 4 Dead.
RunScriptFile <script> (in all games since Left 4 Dead 2) (also in Team Fortress 2)
Execute a VScript file from disk, without file extension. The script contents are merged with the script scope of the receiving entity.
RunScriptCode <string> (in all games since Left 4 Dead 2) (also in Team Fortress 2)
Execute a string of VScript source code in the scope of the entity receiving the input. String quotation may be needed when fired via console.
Icon-Bug.pngBug:In Hammer, using string arguments will corrupt the VMF file's structure, making the file unviewable for the next Hammer session.
Note.pngFix:Remove the string argument manually with a text editor.
Note.pngNote:Team Fortress 2 Backtick characters ` are replaced with quotation marks at runtime, allowing quotation marks to be used when normally not possible.
CallScriptFunction <string> (in all games since Left 4 Dead 2) (also in Team Fortress 2) !FGD
Calls a VScript function defined in the scope of the receiving entity.
TerminateScriptScope  (only in Team Fortress 2) !FGD
Destroys the script scope of the receving entity.
SetLocalOrigin <coordinates> (in all games since Alien Swarm) !FGD
Send this entity to a spot in the map. If the entity is parented to something, it will be offset from the parent by this amount.
SetLocalAngles <angles> (in all games since Alien Swarm) !FGD
Set this entity's angles.

Parentname:
SetParent <string>
Move with this entity. See Entity Hierarchy (parenting).
SetParentAttachment <string>
Change this entity to attach to a specific attachment point on its parent. The entity will teleport so that the position of its root bone matches that of the attachment. Entities must be parented before being sent this input.
SetParentAttachmentMaintainOffset <string>
As above, but without teleporting. The entity retains its position relative to the attachment at the time of the input being received.
ClearParent
Removes this entity from the the movement hierarchy, leaving it free to move independently.

RenderFields:

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 rendermode set to a number other than 0.
Color <color255>
Sets an RGB color for the entity.

Outputs

Position <integer>
Fired whenever the button moves. The output is the position of button from 0 to 1, where 0 is the unrotated position and 1 is the rotated position + 'Distance'.
OnPressed <integer>
Fired when the button is first pressed.
OnUnpressed <integer>
Fired when the button is first released from being pressed.
OnFullyClosed
Fired when the button has reached position 1, the rotated position + 'Distance'.
OnFullyOpen
Fired when the button has reached position 0, the unrotated starting position.
OnReachedPosition
Fired whenever the button reaches a goal position: i.e. when it becomes open, becomes closed, or reaches the point specified by a 'SetPosition' input.

Targetname:
OnUser1 to OnUser4
These outputs each fire in response to the firing of the like-numbered FireUser1 to FireUser4 Input; see User Inputs and Outputs.
OnKilled  (only in Left 4 Dead)
This output fires when the entity is killed and removed from the game.

See also