SWL unstable walls still buggy

[yufra]

I think this is the final fix for this specific problem, but I've said that before.

We fixed the dig function on the unstable sand tunnel entities, but the sandworm_tunneler AI never calls dig on those tiles because they do not block_move. Maybe the if statement on line 100 of ai/sandworm_tunneler.lua should be changed to:

Code: Select all

		if feat:check("block_move") or (feat.name == "unstable sand tunnel") then