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Support different actor area access


A typical example for different area access in gameplay are doors that connect rooms with different navigation meshes and are not accessible by all actors all the time.

Add a NavigationRegion at the door position. Add an appropriated navigationmesh the size of the door that can connect with the surrounding navigationmeshes. In order to control access enable / disable navigation layer bits so path queries that use the same navigation layer bits can find a path through the "door" navigationmesh.

The bitmask can act as a set of door keys or abilities and only actors with at least one matching and enabled bit layer in their pathfinding query will find a path through this region. See Using NavigationLayers for more information on how to work with navigation layers and the bitmask.


The entire "door" region can also be enabled / disable if required but if disabled will block access for all path queries.

Prefer working with navigation layers in path queries whenever possible as enabling or disabling navigation layers on a region triggers a performance costly recalculation of the navigation map connections.


Changing navigation layers will only affect new path queries but not automatically update existing paths.