`func_nav_blocker`

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class hierarchy
CFuncNavBlocker defined in `nav_entities.cpp` ↳CBaseEntity

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

Note:In

doesn't block nav areas automatically on spawn.

Warning:This entity applies its effect based on its AABB instead of its brush model.

Keyvalues

Targetname:

Name (targetname) <string>: The targetname that other entities refer to this entity by.

Team(s) to block (teamToBlock) <choices>

Team this entity should block.

-1 : Everyone
Warning: 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 , Survivors , Terrorists
3 : Blue , Infected , Counter-Terrorists

Note:

teamToBlock non-functional, always blocks either for both teams or for no team.

Affects Flow? (affectsFlow) <boolean> (only in ): Does this Nav Blocker block flow in the level? Only Nav Blocker with this enabled will cause flow recomputation on blocking/unblocking.; Important:Don't block the only path to the level's goal or flow won't be computed properly

~~Recheck Breakables (???) <boolean>~~ (only in ): Deprecated. Appears to respond to any changes to breakables, even though aBlockNav/UnblockNavinput is fired anyways from the breakable prop anyway.

Start Disabled (StartDisabled) <boolean> (not in ) !FGD: If set to false nav areas will be blocked right after spawning.