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[2.0.72] Underground ghost not being placed on lava

Posted: Sun Nov 02, 2025 9:31 pm
by crimsonarmy
Note: foundation must be unlocked for this to occur. (It occurs when it isn't unlocked too but then it isn't a bug)

Attempted to force build dragging a ghost of a belt over lava with a building right after the lava. (It occurs to me as I am writing this that I only tested this with pipes and green belts; I don't see why it would matter but thought I should note it)

A ghost of a normal belt appeared instead of an underground.

I expected an underground to be automatically placed so the belt remained connected (like the oil ocean in the attached video).

It happens consistently

Steps to reproduce:
1. Place a pipe right after lava
2. Force build a ghost belt by dragging from the side with the lava over the pipe (It just occurred to me I never tried going the other way)

Edit: added note at the top

Re: [2.0.72] Underground ghost not being placed on lava

Posted: Sun Nov 02, 2025 9:33 pm
by Loewchen

Re: [2.0.72] Underground ghost not being placed on lava

Posted: Sun Nov 02, 2025 9:44 pm
by crimsonarmy
Loewchen wrote: Sun Nov 02, 2025 9:33 pm 120229
This is not what my bug report was about. Note that foundation is used but an underground is not made.

Re: [2.0.72] Underground ghost not being placed on lava

Posted: Sun Nov 02, 2025 9:53 pm
by Loewchen
I see.

Re: [2.0.72] Underground ghost not being placed on lava

Posted: Mon Nov 03, 2025 12:27 pm
by boskid
I am considering this to be a duplicate of 116827 since belt drag building depends on undergrounds finding the other end and currently they are unable to find other end through tile ghosts.

Re: [2.0.72] Underground ghost not being placed on lava

Posted: Mon Nov 03, 2025 12:35 pm
by crimsonarmy
boskid wrote: Mon Nov 03, 2025 12:27 pm I am considering this to be a duplicate of 116827 since belt drag building depends on undergrounds finding the other end and currently they are unable to find other end through tile ghosts.
Purely for my own curiosity, why does the oil ocean version work?

Re: [2.0.72] Underground ghost not being placed on lava

Posted: Mon Nov 03, 2025 12:37 pm
by boskid
crimsonarmy wrote: Mon Nov 03, 2025 12:35 pm Purely for my own curiosity, why does the oil ocean version work?
Because underground connections are only blocked by lava tiles and empty space tiles. Oil ocean does not block underground connections.

Re: [2.0.72] Underground ghost not being placed on lava

Posted: Mon Nov 03, 2025 12:45 pm
by crimsonarmy
boskid wrote: Mon Nov 03, 2025 12:37 pm
crimsonarmy wrote: Mon Nov 03, 2025 12:35 pm Purely for my own curiosity, why does the oil ocean version work?
Because underground connections are only blocked by lava tiles and empty space tiles. Oil ocean does not block underground connections.
Makes sense. Thanks for humoring my curiosity.