From Valve Developer Community
func_lod is a brush entity available in all Source games.
It is a brush-built model that fades out over a specified distance. Useful for creating world detail that doesn't need to be drawn far away, for performance reasons.
Note:The fading is not always consistent; brushes may suddenly "pop" into view depending on where the player is looking. This happens because of a hardware issues with rendering translucent materials. Low-end cards will fade nearer than the distance specified, and smaller objects fade nearer than a larger object with the same fade distance.
- Disappear Distance
- Distance at which these brushes should fade out. Acts as "Min Disappear Distance" (and +800 as max distance) in L4D and newer games.
- Min Disappear Distance
- Distance at which these brushes should start fading out. (New with Left 4 Dead)
- Max Disappear Distance
- Distance at which these brushes should finish fading out. (New with Left 4 Dead)
- Set whether or not these brushes should collide with other entities.
- 0 : Solid
- 1 : Nonsolid
- Entity Scripts
- Space delimited list of VScript files (without file extension) that are executed after all entities have spawned. The scripts are all executed in the same script scope, later ones overwriting any identical variables and functions.
- Script think function
- Name of a function in this entity's script which will be called automatically every 100 milliseconds (ten times a second) for the duration of the script. It can be used to create timers or to simulate autonomous behavior. The return value (if present) will set the time until the next call. Note:Try to avoid expensive operations in this function, as it may cause performance problems.
- Removes this entity from the world.
- Removes this entity and its children from the world. Note:Entities already remove orphaned children upon being removed, but this input removes all children on the same frame, being marginally faster than
- Adds a keyvalue/output to this entity. It can be potentially very dangerous, use with care.
<output name> <targetname>:<inputname>:<parameter>:<delay>:<max times to fire, -1 means infinite>
- Fire the
OnUseroutputs; see User Inputs and Outputs.
- Same as a player invoking +use; may not do anything depending on the entity. Can also be invoked by firing an output that does not specify an input.
- Execute a VScript file from disk, without file extension. The script contents are merged with the script scope of the receiving entity.
- 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. Bug: In , the code is executed in the script scope of the entity that fires the output, not the one receiving the input.Warning: Never try to pass string parameters to a script function with this input. It will corrupt the VMF structure because of the nested quotation marks, which then must be removed manually with a text editor.
- Execute a VScript function in the scope of the receiving entity.
- 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.
- Set this entity's angles.
- These outputs each fire in response to the firing of the like-numbered
FireUser4Input; see User Inputs and Outputs.
- This output fires when the entity is killed and removed from the game.