Is it possible to get two resources when mining one?

[Keysivi]

I have an idea - to add a new resource "breed" to the game, which is mined simultaneously with any other resource.

Can anyone tell me - is it possible to add a second resource when mining one?

Here is an example of code from the file __base__/prototypes/entity/resources.lua

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    type = "resource",
    name = "uranium-ore",
    minable =
    {
      mining_particle = "stone-particle",
      mining_time = 2,
      result = "uranium-ore",
      fluid_amount = 10,
      required_fluid = "sulfuric-acid"
    },

I want to do something like this:

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    type = "resource",
    name = "uranium-ore",
    minable =
    {
      mining_particle = "stone-particle",
      mining_time = 2,
      result = {"uranium-ore", "stone"},
      fluid_amount = 10,
      required_fluid = "sulfuric-acid"
    },

I write the following code:

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table.insert(data.raw.resource["iron-ore"].minable.result, {type = "resource", name = "stone", amount = 1})

And I get an error:

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Failed to load mods: __My_add_pack_updated__/data-updates.lua:52: bad argument #1 of 3 to 'insert' (table expected, got string)
stack traceback:
	[C]: in function 'insert'
	__My_add_pack_updated__/data-updates.lua:52: in main chunk

I understand that I am a "teapot" in terms of programming, but maybe there is some solution?

[Silari]

Result only allows for ONE item. If you want more than one, use results instead.

Far as I know it works perfectly fine for resource entities.

[Keysivi]

Result only allows for ONE item. If you want more than one, use results instead.

Far as I know it works perfectly fine for resource entities.

Thanks for the advice! I made a couple of edits:

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table.insert(data.raw.resource["iron-ore"].minable.results, {type = "item", name = "stone", amount = 1})

But as a result, only the content of the error changed:

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Failed to load mods: __My_add_pack_updated__/data-updates.lua:52: bad argument #1 of 3 to 'insert' (table expected, got nil)
stack traceback:
	[C]: in function 'insert'
	__My_add_pack_updated__/data-updates.lua:52: in main chunk

Perhaps a more detailed definition is required?

[Pi-C]

I made a couple of edits:

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table.insert(data.raw.resource["iron-ore"].minable.results, {type = "item", name = "stone", amount = 1})

But as a result, only the content of the error changed:

Code: Select all

Failed to load mods: __My_add_pack_updated__/data-updates.lua:52: bad argument #1 of 3 to 'insert' (table expected, got nil)
stack traceback:
	[C]: in function 'insert'
	__My_add_pack_updated__/data-updates.lua:52: in main chunk

Perhaps a more detailed definition is required?

Look at the error message, the solution is right there:

bad argument #1 of 3 to 'insert' (table expected, got nil)

Table 'results' is not defined because 'result' was set. (Actually, both 'result' and 'results' could exist if other mods already had modified the resource; if both exist, only 'results' will be used.)

So, you've got to make sure that results is defined before writing to it:

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data.raw.resource["iron-ore"].minable.results = data.raw.resource["iron-ore"].minable.results or {}
table.insert(data.raw.resource["iron-ore"].minable.results, {type = "item", name = "stone", amount = 1})

However, unless you've just created/modified something yourself in the current stage (data, data-updates, or data-final-fixed) you can't really know what properties it has. For example, if you create a prototype in data.lua you can trust that it will have the properties you've set as long as your mod is still acting on data.lua – but by the time you work on the same prototype again in data-updates, other mods may have changed your prototype, so you can't really trust it's still the same.

Therefore, the proper thing to do is to check whether data.raw.resource["iron-ore"].minable.results already contains the item you want to add and either (a) increase the amount if it already is in the list, (b) skip inserting the item if it already is in the list, or (c) add the stack if the item isn't in the list yet. Something like this:

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data.raw.resource["iron-ore"].minable.results = data.raw.resource["iron-ore"].minable.results or {}
local results = data.raw.resource["iron-ore"].minable.results

local stack = {type = "item", name = "stone", amount = 1}
local add_this = true

for r, result in pairs(results) do
  if result.name == stack.name then 
    add_this = false 
    -- Optionally increase amount:
    result.amount = result.amount + stack.amount
  end
end

if add_this then
  table.insert(results, stack)
end

[Keysivi]

However, unless you've just created/modified something yourself in the current stage (data, data-updates, or data-final-fixed) you can't really know what properties it has. For example, if you create a prototype in data.lua you can trust that it will have the properties you've set as long as your mod is still acting on data.lua – but by the time you work on the same prototype again in data-updates, other mods may have changed your prototype, so you can't really trust it's still the same.

Therefore, the proper thing to do is to check whether data.raw.resource["iron-ore"].minable.results already contains the item you want to add and either (a) increase the amount if it already is in the list, (b) skip inserting the item if it already is in the list, or (c) add the stack if the item isn't in the list yet. Something like this:

Code: Select all

data.raw.resource["iron-ore"].minable.results = data.raw.resource["iron-ore"].minable.results or {}
local results = data.raw.resource["iron-ore"].minable.results

local stack = {type = "item", name = "stone", amount = 1}
local add_this = true

for r, result in pairs(results) do
  if result.name == stack.name then 
    add_this = false 
    -- Optionally increase amount:
    result.amount = result.amount + stack.amount
  end
end

if add_this then
  table.insert(results, stack)
end

Thanks for the advice!
Sorry for the delay. I had a lot of urgent matters. Only today I managed to test it.

Unfortunately, the script you suggested simply replaces iron-ore with "stone"

I replaced iron-ore with uranium-ore - the result is the same.

[Keysivi]

It seems there is no solution. When I wrote the following directly in the game file
__base___/prototypes/entity/resources.lua:

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    minable =
    {
      mining_particle = "stone-particle",
      mining_time = 2,
      results = {"uranium-ore", "stone"},
      fluid_amount = 10,
      required_fluid = "sulfuric-acid"
    },

I got an error:

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Failed to load mods: Error while loading entity prototype "uranium-ore" (resource): Value must be a dictionary in property tree at ROOT.resource.uranium-ore.minable.results[0]

Accordingly, as I understand it, the game itself does not support the ability to mine more than one entity....

[Pi-C]

It seems there is no solution. When I wrote the following directly in the game file
__base___/prototypes/entity/resources.lua:

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    minable =
    {
      …,
      results = {"uranium-ore", "stone"},
      …,
    },

I got an error:

Code: Select all

Failed to load mods: Error while loading entity prototype "uranium-ore" (resource): Value must be a dictionary in property tree at ROOT.resource.uranium-ore.minable.results[0]

Your mistake is that you've set results to an array of strings while it should be an array of ProductPrototype – in your case, this should be ItemProductPrototype. The message specifies that the error occurred for the first item: ROOT.resource.uranium-ore.minable.results[0].

It definitely would help if you'd post your entire mod in its current state, not just snippets.

[Keysivi]

Thank you for paying attention to me! At the moment, this is not a mod, but just an idea.

I want to create an entity called "breed", which should be mined in parallel with the main resource, as it happens in real life... And which should then be filtered from the total mass of mined ore and used as the main ingredient for filling water.

Creating an entity is not a problem for me. The main problem is to make it mined simultaneously with the main resources.

I am testing it inside my mod All kinds of things (updated) https://mods.factorio.com/mod/My_add_pack_updated

At the stage of practical development of the idea, the entity option is not critical. You can use any of the existing ones: stone, steel plate, gear, copper wire. The main thing is that this could be done in principle....

[Keysivi]

If this is critical to you. I will sketch this mod today. This is approximately it:

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data:extend(
{
	{
		type = "item",
		name = "breed",
		icon = "__hardcorio__/graphics/breed/icon.png",
		icon_size = 64,
		subgroup = "raw-material",
		order = "c[breed]",
		place_result = "breed",
		stack_size = 100
	}
})

data.raw.resource["iron-ore"].minable.results = data.raw.resource["iron-ore"].minable.results or {}
local results = data.raw.resource["iron-ore"].minable.results

local stack = {type = "item", name = "breed", amount = 1}
local add_this = true

for r, result in pairs(results) do
	if result.name == stack.name then 
		add_this = false 
		-- Optionally increase amount:
		result.amount = result.amount + stack.amount
	end
end

if add_this then
	table.insert(results, stack)
end

table.insert(data.raw["recipe"]["landfill"].ingredients, {type="item", name="breed", amount=50})

I plan to develop the mod further. But in a somewhat specific direction... I want to try to implement the idea of ​​​​intermediate modules.

For example, to create a "gun-turret" not from primitive ingredients, like iron plates and gears - but full-fledged modules: "barbette", "combat-gun module", "control module"....

[IsaacOscar]

I think your problem is that by setting results it ignores the value of result (as described here https://lua-api.factorio.com/latest/typ ... rties.html)

Now, minable.result is an ItemID, but minable.results taks an array of ProductPrototypes (see https://lua-api.factorio.com/latest/typ ... otype.html).
Now as your only dealing with items, that means you need to put ItemProductPrototypes (https://lua-api.factorio.com/latest/typ ... otype.html) in your results list, including iron.

So to do that:

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data.raw.resource["iron-ore"].minable.results = {
       { type="item", name = data.raw.resource["iron-ore"].minable.result, amount = 1 },
       { type="item", name = "breed", amount = 5 }}

(Assuming you want it to give you 5 breed per mining operation. There are many other properties for ItemProduct, for e.g. if you want the amount to vary randomly, check the documentation).

What Pi-C was trying to suggest is to make your code automatically work with other potential mods, but that's more complicated, so it's probably best to get it working first before worrying about that! (In this case, you have have the source code of "iro-ore" so you know exactly what changes to make)

If you really want to do it Pi-C's way, here is what to do:

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local minable = if data.raw.resource["iron-ore"].minable
local found = false
if minable.results then
    for _, value in pairs(minable.results) do
        if value.name == "breed" then    
              found = true
              if value.amount ~= nil then 
                    value.amount = value.amount + 5
               else 
                     value.amount_min = value.amount_min + 5
                     value.amount_max = value.amount_max + 5 end end end

else if minable.result then
   minable.results = {{ type="item", name = minable.result, amount = 1 }}
else
   minable.results = {} end
if not found then
   table.insert(minable.results, { type="item", name = "breed", amount = 5 }) end
minable.result = nil -- delete unnecessary field

Don't do that though, it likely has lots of syntax errors and bugs, but I just wanted to give you an idea as to how complicated it would be.

[Keysivi]

Thank you very much for your answer. An attempt is not torture. I will try both options.... It will not make anyone worse....