Update recipes with new technologies:

[DiegoPro77]

Hi guys: the title says it all.
Example: you can create an iron gear wheel by using 2 iron plates.

If I wanted to create a technology that implemented a recipe that would use an iron plate for making a gear wheel, not as a new recipe, but as an overwrite to the pre-existing one (as to have a more clear inventory and apply instantly the changes in the game once the research is completed).

_Playmaker

[darkfrei]

Hi guys: the title says it all.
Example: you can create an iron gear wheel by using 2 iron plates.

If I wanted to create a technology that implemented a recipe that would use an iron plate for making a gear wheel, not as a new recipe, but as an overwrite to the pre-existing one (as to have a more clear inventory and apply instantly the changes in the game once the research is completed).

_Playmaker

You are need the control.lua
https://lua-api.factorio.com/latest/eve ... h_finished

It this technology was completed, then disable this recipe. Another recipe will be activated by the technology without control.lua.

Set the technology in the data stage like:

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data.raw["update-technology-1"].effects = {{type = "unlock-recipe", recipe = "assembling-machine-2"}}

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data.raw["update-technology-2"].effects = {{type = "unlock-recipe", recipe = "assembling-machine-3"}}

control.lua

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script.on_event(defines.events.on_research_finished, function(event)
  local tech= event.research
  if tech.name == "update-technology-1" then
      tech.force.recipes["assembling-machine-1"].enabled=false
  elseif tech.name == "update-technology-2" then
      tech.force.recipes["assembling-machine-2"].enabled=false
  end
end)

Also you can replace all am1 with am2 and am2 to am3.

https://wiki.factorio.com/Prototype/Technology

[DiegoPro77]

Thank you man I'll see what I can do with this awelsome piece of code and sorry for the questions but lua is not properly my language. xD

[DiegoPro77]

And if I had a recipe and wanted to change an item required?

Iron gear wheel:
Iron plate, x1 -> Iron gear wheel

New recipe:
Iron rod, x1 -> Iron gear wheel

I've tried to understand and replicate Bob's method (as his way to code is very clear and powerful) but the game didn't "applied" the changes that I made.

[darkfrei]

And if I had a recipe and wanted to change an item required?

Iron gear wheel:
Iron plate, x1 -> Iron gear wheel

New recipe:
Iron rod, x1 -> Iron gear wheel

I've tried to understand and replicate Bob's method (as his way to code is very clear and powerful) but the game didn't "applied" the changes that I made.

You are need two recipes for it. Note that the new recipe must have unique name.

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data.extend({
  {
    type = "recipe",
    name = "iron-plate-to-iron-gear-wheel",
    ingredients = {{"iron-plate", 1}},
    result = "iron-gear-wheel"
  },
  {
    type = "recipe",
    name = "iron-rod-to-iron-gear-wheel",
    ingredients = {{"iron-rod", 1}},
    result = "iron-gear-wheel"
  },
})

[darkfrei]

Sorry.

Some recipes have .normal and some of them have .expensive recipe difficult.

2020-10-04T00_11_11-D__Factorio_1.0_factorio-current.log - Notepad++.png (16.64 KiB) Viewed 2239 times

Just find how it was defined:

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data.raw.recipe["iron-gear-wheel"].normal.ingredients[1] = {"iron-plate", 2}
data.raw.recipe["iron-gear-wheel"].expensive.ingredients[1] = {"iron-plate", 4}

to

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data.raw.recipe["iron-gear-wheel"].normal.ingredients[1] = {"iron-rod", 2}
data.raw.recipe["iron-gear-wheel"].expensive.ingredients[1] = {"iron-rod", 4}

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data.raw.recipe["iron-gear-wheel"].normal.ingredients[1] = {"iron-rod", 2}
-- add another ingredients:
table.insert (data.raw.recipe["iron-gear-wheel"].normal.ingredients, {"tin-plate", 1})
table.insert (data.raw.recipe["iron-gear-wheel"].normal.ingredients, {"copper-screw", 4})

data.raw.recipe["iron-gear-wheel"].expensive.ingredients[1] = {"iron-rod", 4}
-- add another ingredients:
table.insert (data.raw.recipe["iron-gear-wheel"].expensive.ingredients, {"tin-plate", 2})
table.insert (data.raw.recipe["iron-gear-wheel"].expensive.ingredients, {"copper-screw", 8})

[DiegoPro77]

Thank you darkfrei; one more thing...
If I wanted to remove / add a technology prerequisite, how can I do it?

[darkfrei]

Thank you darkfrei; one more thing...
If I wanted to remove / add a technology prerequisite, how can I do it?

Prerequisites are just a list of technologies.

2020-10-04T14_31_34-D__Factorio_1.0_factorio-current.log - Notepad++.png (37.8 KiB) Viewed 2186 times

You are need to remove the value from this list, for example as function:

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function remove_value_from_list (value, list)
	for i, v in pairs (list) do
		if v == value then 
			log ('removed: ' .. value) -- this writes the log into Factorio/factorio-current.log
			list[i] = nil 
		end
	end
end

So if you have the prerequisites as

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data.raw.technology["automation-2"].prerequisites = {"electronics", "steel-processing", "logistic-science-pack"}

then you can call this function as

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remove_value_from_list ("steel-processing", data.raw.technology["automation-2"].prerequisites)

and you get the list of prerequisites as:

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data.raw.technology["automation-2"].prerequisites = {"electronics", nil ,"logistic-science-pack"}

Here nil is nothing, removed value from list.

----------------------
Adding it back:

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table.insert (data.raw.technology["automation-2"].prerequisites, "steel-processing")

The result:

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data.raw.technology["automation-2"].prerequisites = {"electronics", nil ,"logistic-science-pack", "steel-processing"}