Factorio Forums

Suggestion

Let underground belts in your cursor check ghost terrain when checking for entrance/exit pairing.

The Problem

While planning a space platform, after placing an underground belt entrance, the underground belt in your cursor will remain an entrance. You will have to reverse the direction of every exit you place to make them actually be an exit. This is inconsistent with how planning underground belt layouts (almost) anywhere else behaves, and it's annoying.

Technically this would happen while planning on hot lava with foundation, too, but who does that? =p

Why This Happens

The underground belt in your cursor checks for a compatible entrance. It checks only actual terrain, not the ghost terrain. It will see the entrance but assume this is an incompatible connection do the actual terrain being empty space. Because the underground belt in your cursor does not pair, it remains an entrance, not an exit.