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Func nav blocker: Difference between revisions

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{{this is a|brush entity|name=func_nav_blocker|since=Left 4 Dead}} and also in {{tf2}}. It blocks [[Navigation Meshes|nav areas]] touching its [[Bounding volume|AABB]] to restrict NPCs / Bots from crossing over it.
{{this is a|brush entity|name=func_nav_blocker|since=Left 4 Dead}} and also in {{tf2}}. It blocks [[Navigation Meshes|nav areas]] touching its [[Bounding volume|AABB]] to restrict NPCs / Bots from crossing over it.
{{note|In {{l4ds}} doesn't block nav areas automatically on spawn.}}
{{note|In {{l4ds}} doesn't block nav areas automatically on spawn.}}
{{warning|Entity's [[AABB]] is used for blocking nav areas, so clipping or rotating brushes does not change a brush's size as one expects.<br>
{{AABBwarning}}
Diagonal walls will always be ignored, as it will take the furthest out corners of the diagonal walls and create one huge box around all of it. ''That'' box will be your brush entity.<br>
If you need a large diagonal brush, you must create multiple small square entities aligned diagonally.}}
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== Keyvalues ==
== Keyvalues ==

Revision as of 14:09, 18 May 2024

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C++ Class hierarchy
CFuncNavBlocker
CBaseEntity
C++ nav_entities.cpp
Toolstrigger.gif

func_nav_blocker is a brush entity available in all Source Source games since Left 4 Dead Left 4 Dead. and also in Team Fortress 2. It blocks nav areas touching its AABB to restrict NPCs / Bots from crossing over it.

Note.pngNote:In Left 4 Dead seriesLeft 4 Dead series doesn't block nav areas automatically on spawn.
Warning.pngWarning:This entity applies its effect based on its AABB instead of its brush model. [ Edit ]

Keyvalues

Team(s) to block (teamToBlock) <choices>
Team this entity should block.
  • -1 : Everyone
    Warning.pngWarning:Team Fortress 2 for everyone either edit FGD and use value -2 or turn off smart edit and set that, -1 is not valid and the nav blocker will not work
  • 2 : Red Team Fortress 2, Survivors Left 4 Dead seriesLeft 4 Dead series, Terrorists Counter-Strike: Source Counter-Strike: Global Offensive
  • 3 : Blue Team Fortress 2, Infected Left 4 Dead seriesLeft 4 Dead series, Counter-Terrorists Counter-Strike: Source Counter-Strike: Global Offensive
Note.pngNote:Counter-Strike: Global Offensive teamToBlock non-functional, always blocks either for both teams or for no team.
Affects Flow? (affectsFlow) <boolean> (only in Left 4 Dead 2)
Does this Nav Blocker block flow in the level? Only Nav Blocker with this enabled will cause flow recomputation on blocking/unblocking.
Icon-Important.pngImportant:When this is true don't block the only path to the level's goal with it or the flow won't be computed properly
Start Disabled (StartDisabled) <boolean> (not in Left 4 Dead seriesLeft 4 Dead series) !FGD
If set to false nav areas will be blocked right after spawning.

Inputs

BlockNav
Starts blocking nav areas.
UnblockNav
Stops blocking nav areas.

See also