What is the "Correct" way to add static obstacles to a map for 3.5 Navigation2D?

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What is the "Correct" way to add static obstacles to a map for 3.5 Navigation2D?

gauntlet

So I am trying to dynamically add static navigation obstacles to an open map using script. This seems like it would be a super common thing to do but I can't seem to figure out a reasonable way to do it. What I've tried:

Using NavigationObstacle2D: This seems to be intended only for moving obstacles since it isn't taken into account in map_get_path(). As such it's not really useful for my application since I can't calculate a path around them.
Editing the navigation polygon using Geometry.clip_polygons_2D, this showed some promise but it seemed to fall apart whenever I had multiple of my obstacles partially overlapping and the polygon got really weird. Was I just implementing it badly?
Am I completely missing something? I

Thanks (I'm not using a Tileset)

iakl

UP!, I have the same problem. One little difference is that I'm using autotile with navigation mode, and thus, as far as I understand, I should join all the tile polygons into a bigger one in order to use clip_polygons, and this seems too complicated to be the solution (I tried in fact, but failed miserably).

Idealy, I want to carve holes in the navigation mesh as borders of a procedural generated map (The map is bigger than the game area)

Please share here if you find a solution.