Factorio Forums

See title. I know for a fact that there's a way, but I don't remember what it is exactly.

Is it this?

Never mind, I found the solution, it's this:

Question, is there a more efficient way of mass-adding items to existing researches other than just spamming table.insert(data.raw['technology']['tech-name'], {type = unlock-whatever', name = 'whatever'})?

bigyihsuan wrote:Question, is there a more efficient way of mass-adding items to existing researches other than just spamming table.insert(data.raw['technology']['tech-name'], {type = unlock-whatever', name = 'whatever'})?

Take a look at bobs library mod - he created utility functions for stuff like this.

My library does need a lot of new things adding to it, but yes, it does allow easier ways to add items to technologies.

One thing that my library doesn't do though, but you can look at my mods as an example is...

Migration scripts!!!

Adding a new unlock to a technology is fine, but when you load an old save where the research is already unlocked, you'll find the item is not... For this, you need to write a migration script.

I don't currently have access to code, but it would look something like...
Like I said, no reference material to work from, that's off the top of my head, so is probably wrong.

You'd put that in the mod's migrations folder, with a name of your mod, with version number, .lua.


Note... what's the difference between pairs and ipairs?

ipairs will give the number from an indexed list in the first variable, followed by the directly usable address of the item (the whole force table of information in this case)
pairs works best if the table being iterated are tags with an = in them, they separate at the =, everything left of it is taken to be the element name and returned as the first variable, and everything on the right as the second variable.

bobingabout wrote:Note... what's the difference between pairs and ipairs?

ipairs will give the number from an indexed list in the first variable, followed by the directly usable address of the item (the whole force table of information in this case)
pairs works best if the table being iterated are tags with an = in them, they separate at the =, everything left of it is taken to be the element name and returned as the first variable, and everything on the right as the second variable.

ipairs iterates over integer keys in increasing order, starting from 1, stopping at the first missing one, ignoring all other keys in the table.
pairs iterates over every key in a table in arbitrary order.
Both produce key, value tuples when used in a for.
All tables are key = value mappings.

ipairs(game.forces) won't do much, since game.forces contains string = LuaForce mappings, so no integer keys. You need to use pairs() here.