Factorio Forums

Posted: **Sat Feb 10, 2024 1:14 pm**

I am making a mod and it adds an Item Category and Item SubCategory and they don't show up ingame, even though the mod adds items/recipes to those SubCategories.

Code (which adds the Categories/SubCategories):

Code: Select all

local RocketItemCategory = table.deepcopy(data.raw['item-group']['production'])
RocketItemCategory.name = 'mrw:rocket-construction'
RocketItemCategory.icon = '__base__/graphics/icons/rocket-part.png'
RocketItemCategory.icon_size = 64
RocketItemCategory.icon_mipmaps = 4
RocketItemCategory.order = 'e'
data:extend({RocketItemCategory})
local RocketPartSubCategory = table.deepcopy(data.raw['item-subgroup']['space-related'])
RocketPartSubCategory.name = 'mrw:rocket-parts'
RocketPartSubCategory.group = 'mrw:rocket-construction'
RocketPartSubCategory.order = 'a'
data:extend({RocketPartSubCategory})

The game loads as normal, with no immediate errors in the script.
This is the code which makes some recipes and then adds it to the above SubCategory (It also makes items):

Code: Select all

function DefineRocketPart(name, ingredients, failure_chance)
    name = 'mrw:' .. name
    if data.raw['technology']['mrw:rocket-part-assembly'] == nil then
        CreateTechnologies('RPA')
    end
    local Item = table.deepcopy(data.raw['item']['rocket-part'])
    Item.name = name
    data:extend({Item})
    local Recipe = table.deepcopy(data.raw['recipe']['rocket-part'])
    Recipe.name = name
    Recipe.ingredients = ingredients
    Recipe.result = nil
    Recipe.result_count = nil
    Recipe.normal = nil
    Recipe.expensive = nil
    Recipe.results = {{type = 'item', name = name, amount = 1, probability = 1 - failure_chance}}
    for i, ingredient in pairs(ingredients) do
        ingredient.probability = failure_chance
        table.insert(Recipe.results, ingredient)
    end
    Recipe.main_product = name
    Recipe.subgroup = 'mrw:rocket-parts'
    data:extend({Recipe})
end

Please help!

Posted: **Sun Feb 11, 2024 10:54 am**

How are you checking that the subgroup exists? When I use your code and search for it in the prototype explorer (opened with CTRL + SHIFT + E by default) it's there as expected.

Are you maybe looking at the subgroup of the item you create? The code you pasted doesn't set it on the item, so it will have the subgroup of the item your copied the prototype of.

Sidenote: You don't need to copy another prototype for something when you're basically overriding everything after the deepcopy. The following code gives the same result as yours for the subgroup:

Code: Select all

data:extend{{
  type = 'item-subgroup',
  name = 'mrw:rocket-parts',
  group = 'mrw:rocket-construction',
  order = 'a'
}}

Posted: **Fri Mar 08, 2024 12:56 pm**

Bilka wrote: Sun Feb 11, 2024 10:54 am How are you checking that the subgroup exists? When I use your code and search for it in the prototype explorer (opened with CTRL + SHIFT + E by default) it's there as expected.

Are you maybe looking at the subgroup of the item you create? The code you pasted doesn't set it on the item, so it will have the subgroup of the item your copied the prototype of.

Sidenote: You don't need to copy another prototype for something when you're basically overriding everything after the deepcopy. The following code gives the same result as yours for the subgroup:
Code: Select all
data:extend{{
  type = 'item-subgroup',
  name = 'mrw:rocket-parts',
  group = 'mrw:rocket-construction',
  order = 'a'
}}

It isn't in the crafting menu (handcrafting or assembler recipe selection)

Posted: **Fri Mar 08, 2024 1:56 pm**

BraveCaperCat wrote: Fri Mar 08, 2024 12:56 pm It isn't in the crafting menu (handcrafting or assembler recipe selection)

The rocket-part recipe you're copying is hidden and not handcraftable. If you want to check how it shows up in in-game machine GUIs, you'd have to unhide it and make a machine that can craft the "rocket-building" crafting category and doesn't have a fixed recipe.

Or you could check what values are set in the prototype explorer, or create the recipe from scratch, see my first reply.

Posted: **Sat Mar 16, 2024 6:18 pm**

Bilka wrote: Fri Mar 08, 2024 1:56 pm
BraveCaperCat wrote: Fri Mar 08, 2024 12:56 pm It isn't in the crafting menu (handcrafting or assembler recipe selection)
The rocket-part recipe you're copying is hidden and not handcraftable. If you want to check how it shows up in in-game machine GUIs, you'd have to unhide it and make a machine that can craft the "rocket-building" crafting category and doesn't have a fixed recipe.

Or you could check what values are set in the prototype explorer, or create the recipe from scratch, see my first reply.

Ah! That was what i was missing. I forgot to change the rocket part recipes to use the assembler crafting recipe category. Or did I? I think so. It was awhile since that first post.

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