NPC Blueprint "Remove grass" makes them dig deep pits where there is no grass (e.g on moss)

Game Talk The Garage
1

Any ideas how to remedy this?

Making hundreds of small areas that only cover the tiles with grass would not be feasible.

2

Hmm, it looks like the prerequisites check is incomplete. Dropping anything (e.g. fish bait) on tiles you don’t want them to construct at results in them avoiding those tiles.

3

Why is there a “Dig a deep pit” construction option, but I never see it in ‘*’ menu? Anyway, just deleting that thing out of data/json/construction.json provided a semi-permanent workaround.

4

Because some constructions (like concrete walls) require a pit to be built…
Otherwise, if you want NPCs to construct these things (or autoconstruct them), you’d have to dig the pits yourself first…

5

Yes, but why is it not in the construction menu? It is not even grayed out, it simply is not listed.

6

Because it has the "on_display": false tag.

As for the reason I can only guess… Because you usually need to choose the location to drop the dirt you dig up to?

For more info, see the related pull requests #31209 (add the on_display) & #33638 (remove pit from construction menu).