StdLib.Data.Technology

Wrapper for Factorio technology prototypes.

Methods17

function Technology.__call(tech: string) -> technology StdLib.Data.Technology

Looks up and wraps a technology by name.

Parameters

techstring: Technology prototype name

Returns

technologyStdLib.Data.Technology

function Technology.add_effect(effect: table | boolean | string | number, effect_type: nil | string) -> self

Adds an effect to a technology.

Parameters

effecttable | boolean | string | number: Effect target, modifier value, or complete effect definition
effect_typenil | string: Technology effect type; defaults to "unlock-recipe"

Returns

self

function Technology.remove_effect(tech_name: nil | string, unlock_type: nil | string, name: nil | string) -> (self, name nil | string, unlock_type nil | string)

Removes an effect from a technology or removes a recipe unlock.

Parameters

tech_namenil | string: Technology prototype name
unlock_typenil | string: Technology effect type
namenil | string: Effect target name

Returns

self
namenil | string
unlock_typenil | string

function Technology.has_pack(pack: string) -> (has_pack boolean, index nil | integer)

Checks whether this technology contains a science pack.

Parameters

packstring: Science-pack item name

Returns

has_packboolean
indexnil | integer

function Technology.add_pack(new_pack: table | string, count: nil | number) -> self

Adds a science pack to this technology's research ingredients.

Parameters

new_packtable | string: Science-pack name or {name, count} pair
countnil | number: Ingredient count; defaults to 1

Returns

self

function Technology.remove_pack(pack: string) -> self

Removes a science pack from this technology's research ingredients.

Parameters

packstring: Science-pack item name

Returns

self

function Technology.replace_pack(old_pack: string, new_pack: string, count: nil | number) -> self

Replaces a science pack in this technology's research ingredients.

Parameters

old_packstring: Existing science-pack item name
new_packstring: Replacement science-pack item name
countnil | number: Replacement ingredient count

Returns

self

function Technology.set_pack_count(pack: string, count: number) -> self

Sets the amount of an existing science pack.

Parameters

packstring: Science-pack item name
countnumber: New ingredient count

Returns

self

function Technology.set_pack_amount(pack: string, count: number) -> self

Parameters

packstring: Science-pack item name
countnumber: New ingredient count

Returns

self

function Technology.add_prereq(tech_name: string) -> self

Adds a prerequisite technology.

Parameters

tech_namestring: Prerequisite technology name

Returns

self

function Technology.remove_prereq(tech_name: string) -> self

Removes a prerequisite technology.

Parameters

tech_namestring: Prerequisite technology name

Returns

self

function Technology.replace_prereq(old_tech: string, new_tech: string) -> self

Replaces one prerequisite technology with another.

Parameters

old_techstring: Existing prerequisite technology name
new_techstring: Replacement prerequisite technology name

Returns

self

function Technology.copy_cost(tech_name: string) -> result self | false

Copies research-unit properties from another technology.

Parameters

tech_namestring: Source technology name

Returns

resultself | false

function Technology.multiply_cost(mult: number) -> result self | false

Multiplies this technology's research-unit count.

Parameters

multnumber: Cost multiplier

Returns

resultself | false

function Technology.add_unlock(recipe: string) -> nil

Adds a recipe-unlock effect to this technology.

Parameters

recipestring: Recipe prototype name

Returns

nil

function Technology.get_recipes() -> recipes {string, true} | nil

Returns the recipes unlocked by this technology.

function Technology.remove_unlock(recipe: string) -> nil

Removes a recipe-unlock effect from this technology.

Parameters

recipestring: Recipe prototype name

Returns

nil

Fields5

Technology.effects : table[] | nil

Technology effects

Technology.prerequisites : string[] | nil

Prerequisite technology names

Technology.unit : nil | table

Technology research-unit properties

Technology.__class: string = "Technology"

Technology.__index : unknown