func_nav_blocker

This entity is not in the FGD by default.
See below for instructions on making it available.

Class hierarchy
CFuncNavBlocker ↳CBaseEntity
nav_entities.cpp

func_nav_blocker is a brush entity available in all Source games since Left 4 Dead. It is also in Half-Life 2: Deathmatch, Counter-Strike: Source, 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. [ Edit ]

Keyvalues

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

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: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 ) !FGD

If set to false nav areas will be blocked right after spawning.

Inputs

BlockNav

Starts blocking nav areas.

UnblockNav

Stops blocking nav areas.

Kill

Will unblock nav areas before killing the nav blocker

FGD Code

Half-Life 2: Deathmatch Expand

@SolidClass base(Targetname) = func_nav_blocker : "A brush entity that can block nav areas touching its AABB." [ input BlockNav(void) : "Starts blocking nav areas." input UnblockNav(void) : "Stops blocking nav areas." teamToBlock(choices) : "Team(s) to block" : -1 : "Block the nav for bots on this team" = [ -1 : "Everyone" 2 : "Combine" 3 : "Rebels" ] ]

Counter-Strike: Source Expand

@SolidClass base(Targetname) = func_nav_blocker : "A brush entity that can block nav areas touching its AABB." [ input BlockNav(void) : "Starts blocking nav areas." input UnblockNav(void) : "Stops blocking nav areas." teamToBlock(choices) : "Team(s) to block" : -1 : "Block the nav for bots on this team" = [ -1 : "Everyone" 2 : "Terrorists" 3 : "Counter-terrorists" ] ]

See also

• script_nav_blocker - VScript catered version of func_nav_blocker.