Bumping this topic, just for the ability to hide entities in the upgrade planner GUI.

The original request was kind of a lot. Hopefully adding something 'hidden_in_upgrade_planner' is less of an ask .

+1

Add an event for when entities change due to a blueprint being pasted. This could be much larger than just changes in tags - also control behavior, modules, ...

You can use Blueprint manipulation library to achieve this. It has a function that maps blueprint entities to the entities they overlap ...

Thank you, this is great!!

As a sort-of followup to this request , it would be great to have the ability to exclude an ingredient from a recipe result's freshness. The motivation is to have a recipe with both a spoilable catalyst ingredient and a regular spoilable ingredient; the catalyst can't currently be returned ...

Another option would be to put the radius of generated chunks into utility constants, which would allow it to be changed in the data stage.

Hurkyl wrote: Fri Apr 24, 2026 10:22 pm The proposed change would allow players to stockpile purple and yellow science while working on the achievement. Does that break the spirit of the achivement?

A middle-ground could be "don't craft X", instead of "don't research with X".

Another idea is an option to run a simulation directly from the command line, which would exit when it's finished (based on length ). This would also come with the extra benefit of being able to use game.simulation.create_test_player as part of a test. But now this request is starting to sound like ...

I'm using Factorio's headless server running in Docker for automated testing of my mods ( repo here ). It's a bit hacky, but it works great; and the best workflow I've found is to create a scenario for each test suite (putting all the test functions in the scenario's control.lua ). The only issue I ...

It can feel a bit silly to have an entity with glowing-hot heat pipe attachment points not be able to heat neighboring entities. When entities have multiple heat connections they can act like heat pipes (i.e. heat can flow through them), which makes the lack of heating_radius more noticeable ...

If a mod adds spoilable ammo and the ammo spoils while an inserter is trying to insert it into a turret (and the spoil result is not valid ammo for the turret), the inserter will get stuck indefinitely because the turret cannot accept the spoil result. From what I can tell, this happens because ...

I realize that adding something like "EntityPrototype::upgrade_from_alternative" might be too niche and/or have too many edge cases to be worth implementing. Even if that can't be implemented, adding a version of "EntityPrototype::hidden_in_upgrade_planner" would still be valuable (and, I expect ...

Thank you!!

There's only a limited number of ways that a module insert plan or item request proxy can be created/updated. It's something I had to cover for my Rigor Module mod. Here's my control.lua for reference. And I recommend the mod bplib for handling blueprints being pasted on top of entities.

My mod Rigor Module , in order to implement a new module effect, needs to create a bunch of hidden copies of entity prototypes. Crafting-machine entities get "hot-swapped" at runtime with their hidden "rigor" versions, depending on the rigor modules they do or don't have inserted. This works almost ...

As a followup to this request: it's now possible to hide recipes from the bonuses GUI (which saves my mod from having 20x this problem!), but not entities.
It would be great to have hide_from_bonus_gui for EntityPrototype as well.

Wow, you guys work fast !

RecipePrototype has the properties result_is_always_fresh and reset_freshness_on_craft , and ItemProductPrototype has the property percent_spoiled . If a recipe has spoilable ingredients, and a spoilable product with percent_spoiled = 0.5 , that product will be 50 percentage points more spoiled than ...

Do they show even if they have hidden set to true? Sounds like they should not be displayed there when hidden.
But a manual override would be nice too


Yes, they show up when hidden is set to true. I'd originally expected that anything that's 'hidden' overall would be hidden in the bonuses GUI ...

Hidden recipes and entities still show up in the bonus GUI.
https://i.imgur.com/KREI1Gi.png
This mod uses altered, hidden versions of existing recipes and entities (with automatic switching) to mimic a module effect for a custom module type. It would be helpful to have an option to hide these ...