momentary_rot_button
momentary_rot_button is a brush entity available in all 
Source games.
 Class hierarchy
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| CMomentaryRotButton |
buttons.cpp
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It is designed to be used for rotating wheels, where the player can rotate them to arbitrary positions before stopping.
Bug: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.
Workaround: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.
Contents
Keyvalues
- Name
(targetname)<string> - The name that other entities refer to this entity by, via Inputs/Outputs or other keyvalues (e.g.
parentnameortarget).
Also displayed in Hammer's 2D views and Entity Report.See also: Generic Keyvalues, Inputs and Outputs available to all entities
- Speed (deg/sec)
(speed)<integer> - The amount, in degrees, that the wheel turns per second.
- Master (Obsolete)
(master)<string> - Legacy support: The name of a master entity. If the master hasn't been activated, this button cannot be used.
- Sounds
(sounds)<choices> - Sound to play after being turned.
Value Description 0None 1Big zap & Warmup 2Access Denied 3Access Granted 4Quick Combolock 5Power Deadbolt 1 6Power Deadbolt 2 7Plunger 8Small zap 9Keycard Sound 21Squeaky 22Squeaky Pneumatic 23Ratchet Groan 24Clean Ratchet 25Gas Clunk
- Distance
(distance)<integer> - The maximum amount, in degrees, that the wheel is allowed to rotate.
- Auto-return speed
(returnspeed)<integer> - If the 'Toggle' spawnflag is not set, the speed at which the wheel auto-returns when left alone, in degrees per second.
- Start Position
(startposition)<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
(startdirection)<choices> - Which way the wheel turns.
- -1 : Forward
- 1 : Backward
- Solid BSP
(solidbsp)<boolean> - Set this if this brush is in hierarchy with a moving object of some kind, and the player can stand on this brush.
Flags
Not Solid : [1]
Toggle (Disable Auto Return) : [32]
X Axis : [64]
Y Axis : [128]
Use Activates : [1024]
Starts locked : [2048]
Jiggle when used while locked : [8192]
Non-Solid : [16384] (only in 
)
Note: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!FGD- Prevent the Position output from firing. Used to implement "jiggle when locked" by firing
SetPositioninputs.
_EnableUpdateTarget!FGD- Allow the Position output to fire again. Used to implement "jiggle when locked" by firing
SetPositioninputs.
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.
