So I'm performing LOS checks on XMarkerHeading objects and things are mostly working perfectly. One small quirk is that the LOS check only seems to consider the origin coordinates (the base in this case) so if the base is obscured by a boulder or something HasLOS() will return false even when the remainder of the marker is clearly visible.

Is there any lightweight object I can use which will consider the entire shape when performing LOS checks? Worst case scenario I use an invisible actor but since I need more than one of these and they will be persistent I would like to use the cheapest possible object.

Any recommendations are very much appreciated.

The least resource intensive actor I have found is a fish. (least AI, polygons, animations... eccetera.)

All my mods that use LOS checks have an actor I call "Little Dead Fish".

Even DEAD and DISABLED it will run LOS checks.

I have been doing this since Oblivion in many of my mods.

Edit: oh there is one big Gotcha you should be aware of... Moveto will not work once the actor is in the cell with the player or adjacent.

so always couple it with a set position function. Using Moveto and set position after solve the issue.

Funny I do not remember that being a problem in Oblivion (at least for actors, objects did have move to issues). I miss Oblivion modding, so much easier and less was hard coded and the oblivion script extender was more powerful...

Oh I thought for sure that Disabled would automatically return False for LOS (similar to how the wiki says that LOS checks for objects behind the FOV are trivially determined), nice!!!

Thanks for the suggestion, that gotcha is a doozy though I don't think I would have ever been able to debug that.

Maybe I can use a disabled BlackPlane01, in theory it should be a single polygon. I'll have to open one up in nifskope.

I prefer actors because objects cannot get line-of-sight to a non-actor.

But if you do not need that then I guess an object would be better.

It's for the player

The good news is that BlackPlane01 is looking very ideal (with some small modifications ). About to test it in-game right now.

Edit: Same problem with BlackPlane01 . Perhaps it is something specific to markers? I may have to use an actor.

So you are trying to get LOS to the player OR from the player to the object? It makes a big difference!

You do know that from the player to the object or actor it will return false if the camera cannot see the object. Even if there are line-of-sights (top middle bottom) outside the camera's view.

But yeah I find my "little dead fish" is more reliable unless all I want is a simple (like a wall) check from the player to the object right in front of the player (in the camera view).

Player to object, I know that only the player can check LOS on non-actor refs. (And non-player actors can only use a detection check)

The camera view is what I see on screen isn't it? When my character is facing forward but my camera is looking behind at the marker my LOS checks return true.