func_lookdoor

Code classes:

• CLookDoor
• CFuncMoveLinear
• CBaseToggle
• CBaseEntity (all ents)

func_lookdoor is a brush entity present in the Half-Life 2 series and Alien Swarm. 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.

Flags

• 8192: LookDoor Threshold To do: Description.

• 16384: LookDoor Invert - Make the door behave oppositely. Player has to be outside Proximity Distance, and not looking at the door within Field of View.

• 32768: LookDoor From Open To do: Description.

Keyvalues

Target (Not in FGD) (target) <target_destination>

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

Proximity Distance (ProximityDistance) <float>

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

Proximity Offset (ProximityOffset) <float>

Offset from the target object.^[Clarify]

Field of View (FieldOfView) <float>

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

Inputs

InvertOn

Enabled inverted behavior.

InvertOff

Turn door behavior back to the normal method.