I randomly opened a 2.0 savefile in 2.1 and got this crash.

To reproduce please ignore all mods without 2.1 release, I did the same.

I don't know why this specific save file crashes, I tried a save from a few hours later and that loaded fine.

Py had some breaking changes in the 2.1 release ...

Stack inserters are currently guarded by the space_travel feature flag, so it is not possible to have those juicy inserters or mining drills without each and every item having the rocket capacity in the tooltip. space_travel should not include random things, there is a new expansion feature flag for ...

for the interested: the new on_blueprint_settings_pasted event allowed me to get rid of the blueprint manipulation library

When using waterfill mod to build some water tile ghosts and add an offshore pump ghost, get_fluid_source_fluid returns nil.

I'd prefer to to have a way to make this work with tile ghosts (maybe optionally), otherwise I have to resort to use get_fluid_source_tile and do all the calculations myself ...

If you have "Automatically enable new mods" disabled, the process of updating mods can lead to mods not loading correctly.

Scenario:
mod A 1.0 (installed and active)
mod A 2.0 (newer version available on mod portal)
mod B 1.0 (available on mod portal, was never installed before, required dependency ...

Normally multiple inserters (A,B) on the same building move in alternating order, (ABABABAB...). After a mod update the game forgot where it was end I ended up with ABABA A BABAB...

This might sound like a minor bug to you, but in my circumstances it is pretty big. I'm playing Ultracube, and ...

Status update: I got it working, see https://mods.factorio.com/mod/sw-entity-tracker
The tracking in action can be found here: https://mods.factorio.com/mod/sw-rates- ... /changelog

However, I will gladly simplify the functionality if the API is changed according to what I proposed.

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 ...

... however when the ghosts are build by construction bots I lose track of them (the entity has a new unit_number).


They do not have new unit numbers. The same unit number of the entity while in ghost form is used when built by robots. You simply aren't reading the actual entity unit number ...

With my mod a player can select entities (including ghosts), and then configure stuff. Currently I store the unit_number of the selected entities, however when the ghosts are build by construction bots I lose track of them (the entity has a new unit_number). So when working with a ghost build that ...

From https://lua-api.factorio.com/latest/classes/LuaRecord.html

Records in the "my blueprints" shelf are read-only, but records in the "game blueprints" shelf are read/write.

I'm absolutely able to modify records in "my blueprints" inside the on_player_setup_blueprint event. Is this piece of ...

click at Direction (here seen on pipe) leads to 404 (https://lua-api.factorio.com/latest/typ ... ction.html), please change

Maybe alt-mode was the wrong technical term, I meant the recipe icons in map view. They make such a huge difference when trying to visually find stuff, so I don't really want to disable those.

Unfortunately they cost performance in map view even if zoomed in and I don't see a single one of those ...

I did some testing, and you are right, disabling all map view options did help. Unfortunately it's difficult to live without ALT-mode in map view, and that option was responsible for the largest part of the extra update time.

Really sad that I have to pay that performance cost even when zoomed in ...

I have a very large base (100x science multiplier) where every bit of performance matters. Nowadays I mostly work from map view, but going into map view (looking at the same location with the same zoom) causes ~1.7ms of update time continuously, which is already 10% of the available budget. Since I ...

I have a very large base (100x science multiplier) using vanilla trains using parameters (2.7k trains, 2.9k stations).
Vanilla trains go to a loading station (all named the same), then go to an unloading station based on its cargo content using the item parameter.

Everything runs fine (just enough ...

TL;DR
Why is it so complex to feed products back into the machine?

What?
I'd like machines to pull from their output inventory (and maybe also trash inventory) when consuming ingredients. Inserters responsible for input/output can easily be wired to the machine itself for controlled input ...

TL;DR
Make it easier and for mods to define wind turbines.

What?
LuaSurface currently has a few wind properties, but they only affect smoke/clouds.

Please make it possible to:

bind an electric-energy-interface to the surface's wind speed or a user-defined per-surface runtime variable. I don ...

+1

Mods that want to do that will find a way and it will cost more performance that such an event (and might have restrictions with mod compatibility). For example using rocket silos or on-tick events with products_finished and/or crafting_progress .

This can be very restrictive, such that is has ...

TL;DR
Render a part of the map on top of the map somewhere else.

What?
Factorissimo 3 does something like this on mouse-over
12-10-2025, 17-46-12.png

However, there are some restrictions:

has problems with sizing (I had it matching previously, might be a bug in the mod, but shows how ...