Hello. Great mod, am loving it. I only noticed after the new sprite update that the free placeable boats seem to crash into fish and get damaged. Is that intended behavior, or some of my other mods responsible. I can't test it in an unmodded save right now.

Last time the fish collision mask came up, it was waterways colliding with fish and Space Exploration was the culprit. I'll probably have to apply the same fix to the boat-indep prototype too. Thanks for the report.

Space Exploration is in the Modpack this time too. That could be it.

I found the root cause. When Space Exploration adds "space_tile" to the fish's collision mask (which normally just has "ground_tile"), it removes the "collides_with_tiles_only" flag. The boat also collides with "ground_tile", so now fish collides with it. I solved it with the rails by removing ground_tile from the collision mask and using tile buildability rules instead, but that won't work for the boat while it drives around. I'll check with the Space Exploration team, they should really just fix it so the flag stays.