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Navmesh: testing for any obstruction within an area

I'm looking for some way (from C++) to test if an area is wholly navigable. For example, take a point on the nav mesh and then test whether there are any obstructions (i.e. non-navigable space) within a radius.

There is an easy, though inefficient, fallback, which is to project a point to the navmesh and then cast some rays radially to find obstructions. I'm hoping though there is a better area/area operation that can be used.

It seems like testing an area for clear navigability should be a pretty common operation -- am I just not finding it?

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asked Dec 11 '14 at 04:57 PM in C++ Programming

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There is a function that does just that in Recast lib, dtNavMeshQuery::findDistanceToWall, but funny enough no one was asking about it yet :)

I'll implement a wrapper and submit it today.



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answered Dec 11 '14 at 08:17 PM

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MieszkoZ STAFF
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avatar image disla Dec 11 '14 at 08:42 PM

Haha, awesome. Thank you, Mieszko! :)

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