Factorio Forums

Repro steps:
- Open attached save file.
- Select the pinned spidertron on Nauvis, it has a portable fission reactor in its trunk.
- Remotely insert the portable fission reactor into its equipment grid.

Expected result:
- The portable fission should be added to the equipment grid by a construction bot.

What happens:
- An alert appears saying 1 entity (the spidertron) is missing materials for construction.

This also happens in stable 2.0.32.

It seems a spidertron can't affect its own inventory/equipment grid.

A solution is to have two spidertrons.
Then you can do shenanigans like putting a ghost inventory order into spidertron 2's trunk for that reactor, this will be fulfilled by spidertron 1's bot, then spidertron 2' bot will put the reactor into spidertron 1' grid.

Muche wrote: Sun Mar 02, 2025 6:29 pm It seems a spidertron can't affect its own inventory/equipment grid.

Adding other pieces of equipment remotely isn't a problem: the personal roboports, exoskeletons, etc in this spidertron were all added by construction bots from my base.

Nyax wrote: Sun Mar 02, 2025 6:57 pm

Muche wrote: Sun Mar 02, 2025 6:29 pm It seems a spidertron can't affect its own inventory/equipment grid.

Adding other pieces of equipment remotely isn't a problem: the personal roboports, exoskeletons, etc in this spidertron were all added by construction bots from my base.

You're describing 2 different things: robots from a logistic network delivering equipment, and robots from the spiders own inventory delivering items to itself.

Rseding91 wrote: Mon Mar 03, 2025 3:13 pm You're describing 2 different things: robots from a logistic network delivering equipment, and robots from the spiders own inventory delivering items to itself.

Thanks, you made me think again about what is happening. The problem has nothing to do with fission reactor.

This spiderton has a reactor in its trunk and I expected robots from my base to move the item from the trunk to the equipment grid, that doesn't work probably because the spiderton's trunk is not a logistic source (would be nice if that worked though!). I just happened to not have any extra reactor available in the logistic network at that time which triggered the entity missing materials alert. Sorry for this silly mistake!

What is strange is as Muche said: a spidertron is not able to move items from its own trunk to its own grid. It can move items from its own trunk to another spidertron's grid. Is there a reason for it not being able to interact with itself?

Should I create a new topic with new save for this question (spidertron interacting with itself) given the original title/post are not a bug?

Thanks for the report, this is fixed for 2.0.43.