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Can I get the size of a chunk of my nav mesh?

My game uses dynamic walls that will sometimes trap my AI in a small section of an arena. Ideally I would like to be able to check to see how large the piece of the navmesh the AI is currently on is, so I could trigger a behavior to knock down walls if it becomes too small.

To be clear: I have a nav mesh component that cover the arena, and want to know how to get the size of a piece of it that is cut off from the rest by a wall.

Product Version: UE 4.16
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asked Mar 15 '18 at 05:07 PM in Using UE4

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