func_lookdoor

Class hierarchy
CLookDoor ↳CFuncMoveLinear ↳CBaseToggle ↳CBaseEntity
look_door.cpp

func_lookdoor is a brush entity available in Half-Life 2 series. It's a door that moves, either when looked by a targeted object or when a target object comes near the door. Behavior can be either based on viewing direction or proximity alone, or on a combination of both.

Note:The SetPosition input and Start Position keyvalue do not perform any bounds checking, so values less than 0 and greater than 1 can be used. Negative values will move in the opposite direction to the movement direction, and values greater than 1 will move it in multiples of the set Move Distance. Moving past the opened/closed position does not trigger the OnFullyOpen and OnFullyClosed outputs.

Bug:There are bugs that may arise when parenting this entity to any of these: func_movelinear, func_lookdoor, func_water_analog. A func_door (or for func_water_analog, func_water) can be used as a workaround. (see here for a code fix)^{[ Code Fix]}

Confirm:Might be fixed in Portal 2? Parented movelinears are used extensively for this game's piston platforms.

Note:This entity is also in the code for . Its functionality is not guaranteed.

Flags

!FGDFuncMoveLinear:

Not Solid : [8]

Bug:Physics objects cannot be constrained to this entity when this flag is enabled.  [todo tested in ?]

LookDoor:

LookDoor Threshold : [8192]

LookDoor Invert : [16384]

Make the door behave oppositely. Player has to be outside Proximity Distance, and not looking at the door within Field of View.

LookDoor From Open : [32768]

Keyvalues

Note:For Keyvalues and Inputs affecting brush rendering, see Brush entity/Rendering related keyvalues and inputs

Name (targetname) <string>[ Edit ]

The name that other entities refer to this entity by, via Inputs/Outputs or other keyvalues (e.g. parentname or target).
Also displayed in Hammer's 2D views and Entity Report.

See also:  Generic Keyvalues, Inputs and Outputs available to all entities

Target (target) <targetname> !FGD

Thing (probably a player) that we will check for LOS to the door.

Proximity Distance (ProximityDistance) <float>

If non-zero, how close target must be for door to move.

Proximity Offset (ProximityOffset) <float>

Offset from the target object.

Field of View (FieldOfView) <float>

If non-zero, how far away from the door the target can look while still triggering it.

FuncMoveLinear:

Move Direction (Pitch Yaw Roll) (movedir) <angle>

The direction the entity will move in.

Start Position (startposition) <float>

Position of brush when spawned, where 0 is the starting position and 1 is starting position + (move direction * move distance).

Speed (speed) <integer>

The speed that the brush moves, in inches per second.

Move Distance (movedistance) <float>

The distance from the starting point that the brush should move, in inches.

Block Damage (blockdamage) <float>

The amount of damage to do to any entity that blocks the brushes, per frame.

Bug:Block damage doesn't function on players who passed through a trigger_teleport using noclip, though it will have effect again if the the player goes through a trigger_teleport without noclip.  [todo tested in ?]

Sound played when the brush starts moving. (startsound) <sound>

The sound to play when the brush starts moving.

Sound played when the brush stops moving. (stopsound) <sound>

The sound to play when the brush stops moving.

Inputs

InvertOn

Enabled inverted behavior.

InvertOff

Turn door behavior back to the normal method.

FuncMoveLinear:

Open

Move the brush to the end position (starting position + (move direction * move distance)).

Close

Move the brush to the starting position.

SetPosition <floatRedirectInput/float>

Move the brush to a specific position, where 0 is the starting position and 1 is the starting position + (move direction * move distance).

SetSpeed <floatRedirectInput/float>

Set the speed and update immediately.

TeleportToTarget <targetnameRedirectInput/string> (only in )

Teleport to the origin of a given entity.

ResetPosition <floatRedirectInput/float> (only in )

Set a new start position, parameter relative to wherever the current one is.

Todo: Parameter might actually be optional?

Outputs

FuncMoveLinear:

OnFullyOpen

!activator = !caller = this entity
Fired when the brush reaches the end position (starting position + (move direction * move distance)).

OnFullyClosed

!activator = !caller = this entity
Fired when the brush reaches the starting position.