It's not an exact answer to your question, but I have dealt with this problem using vanilla before. The root of the problem is normally that logistics bots continuously move ammo and repair packs to the border wall, and never have any reason to fly back to the main base. We can correct this problem ...

The obvious cause I can think of is if the red belt lane got contaminated with some other items. Those items would end up on the left lane of the unfiltered output. If those items back up to the point that a non-red-cicuit item is held in the splitter's buffer for the left lane, then it will stop ac...

i would love to see a traincart which only houses a single Spidertron that you could walk into with the Spidertron and have the Spidertron sitdown and dock into, letting it be transported via trains! You should check out Vehicle Wagons . I haven't tried it with spidertrons yet, but according to the...

LTN station setting signals are received from the Lamp component of the stop (the same place you send items available/requested). Also double check the mod settings in case I forgot about something there.

Anything that can be done by a JSON script can also be done by a Lua script and "uninstall" setting, if the mod author is careful. I can see a lot of problems running uninstall JSON files if you multiple mods still installed--what if it tries to set them back to a vanilla entity that doesn...

Another thing not on the changelog: Mining drills marked for deconstruction before ejecting an item will return that item when they are deconstructed instead of destroying the item. Thank you!

If all you need is a way to visually see which drills to manually deconstruct, the game has it already. The activity indicator light on the drill is red when there are no resources left (or no power). This works for electric drills at least.

The solution to the inserters problem is to use the LTN "locked slots" feature, so that LTN intentionally underfills each wagon. The LTN stop combinator should output a signal for the requested item. Wire that to filter inserters to load the train, each configured to set filters by the cir...

This is a known behavior. For example, https://forums.factorio.com/viewtopic.php?p=487038#p487038 Handcrafting algorithm is "dumb" and only picks one option to use for intermediate products. You can always click the other recipe to make the intermediates manually, then craft the final item...

If you're designing some kind of railway grid with 2 parallel unidirectional tracks, one back and one forth, and add tracks to all 4 sides, you have the dilemma that you cannot overlay the tracks with the next tiled section. Geometrically speaking, there is no problem with a unidirectional rail gri...

While redesigning the system would result in far fewer problems, rhe immediate cause of repathing being slow is the train stop you put on a mainline bidirectional track. Train stops that the train is not stopping at penalize a path by 2000 tiles. The penalty for another train stopped and blocking a ...

Understood, thanks for clarifying!

Most likely the issue is that second part: mod migration.lua files were never intended to run in simulations. To clarify: Do you mean that it was not intended for the simulation script to call mod migration.lua files, and the simulation script needs to be fixed by you to not call them anymore? Or d...

Small update: PI-C was investigating another tutorial migration crash and discovered that the tutorial scenario script calls the migration scripts within the Lua environment of the scenario itself, not within mod sandboxes. This is the root cause for why relative path resolutions are affected, but i...

Yes, that's right: https://lua-api.factorio.com/latest/events.html#on_player_setup_blueprint mapping :: LuaLazyLoadedValue(dictionary[uint → LuaEntity]) The blueprint entity index to source entity mapping. Note: if any mod changes the blueprint this will be incorrect. It's not clear from the docs, b...

You have found that the blueprint API only allows getting or setting the entire list of entities at once. That's how it's supposed to work. I do this all the time when I want to change the name of the entity in the blueprint. As long as you're modifying entity subtables and not adding/subtracting fr...

This is the purpose of the "localised_name" and "localised_description" properties in the data phase. See the docs for some examples, and there are a lot of topics on the forum with answers to common questions. https://wiki.factorio.com/PrototypeBase#localised_name

Trains can never path to avoid their own tails. This is simply a reason to avoid loop junctions. You could maybe try removing all the signals inside the junction, but that limits throughput. Trains don't lose their reservation at a station when the train limit decreases, only if the station becomes ...

https://mods.factorio.com/mod/Inventory%20Sensor can read nuclear reactor temperature, not sure about fluid temperature.

What does the fuel tab look like? The fuel tab has 10 slots on a line along with a severely shrunken burning fuel bar. Cargo ship fuel tab.jpg That appears to be why the schedule tab horizontal alignment is off. Cargo ship schedule tab.jpg Thanks for looking at this. I would have expected the fuel ...