R Soul on 2/10/2016 at 12:43
This is off topic but still useful:
Cells are also used to generate the AI pathfinding database. This is why, before NewDark came out, some people had to use activated area brushes to isolate the places the AI could reach. Without them, the database would have been too large for the engine.
It's also why an AI will struggle to navigate certain places. An awkward cell structure can cause the AI to avoid what looks like an empty space, or worse, to suddenly change heading a few times before continuing as if nothing had happened. You can use blockable brushes to force the cells to split, which usually makes navigation simpler, like the eye of a storm.
