模组制作

Modding allows to change elements of the game or add new features. Certain things are hardcoded, i.e. not available for modding, such as changing map modes or adding new hotkeys.

All mods will be achievement compatible unless they utilize console commands.

Tips

Create a mod instead of directly modifying the game files, as they will be overwritten with any game update
Use a good text editor that has syntax highlighting and other useful features like find in files. The following programs are free and currently have plugins to support Victoria 3 scripting:
1. Sublime Text is very fast and has syntax, completion, and documentation support with the plugin found here: Victoria 3 Tools
2. Visual Studio Code is a slower but feature rich editor that has a fan-made plugin called CWTools that is found here: CwTools
3. Notepad++ is another good lightweight editor but it has no fan made plugins that support Victoria 3 specifically. Choosing Perl as your language syntax will give satisfactory syntax highlighting.
Start the game with "-debug_mode" and "-filewatcher" options to use the console, dev tools, and automatically reload changed files without having to restart the game.
Use the error.log to catch any bugs, it is extremely useful the logging is very accurate and is one of the greatest tools modders have for debugging things that are not working. It is located next to the mod folder in Documents/Paradox Interactive/Victoria 3/logs
Backup your work, things can go wrong and it is always good to have a backup. Either do it manually or use a version control system like Git. Also consider using GitHub for team collaboration. If you are new to Git a program like Github Desktopis great for beginners.
Use "script_docs" and "DumpDataTypes" console commands in the game to generate other logs with event effects, triggers and scopes.
If you are unsure of how to do something, search through the base game files for words you know you need to use. Finding in files is one of the most important tools to quickly write bug free mods.
Remove your local mod when you subscribe to the Steam version, otherwise it won't work.
Indent properly, so that opening and closing brackets are on the same level. Proper formatting will allow you to fold blocks of code, help spot any mistakes and make it easier to read.
Add comments, starting with #, to remember later how things works, to navigate easier or to disable parts of code without deleting them.

Modding Guides

Game object reference

Dependency and Folder Structure

If you want to add a new game object, you will need to keep in mind which more fundamental objects it depends on, and how to organize the files so the game recognizes it.

All paths are relative to the 'game' folder inside your Victoria 3 install directory, as that is where all scriptable parts of the game are located.

Note: objects with no dependencies may still reference primitive objects (numbers, strings etc) or core game concepts, but no object type that mods can edit or define, only change the parameter value of. Nested references, especially within modifiers, are generally also not counted, since modifiers can have arbitrary dependency relations.

Object type	Path	Dependencies
Professions	common/pop_types
Trade goods	common/goods
Needs	common/pop_needs	Trade goods, via 'default' Trade goods, via 'goods' inside 'entry'
Eras	common/technology/eras
Technologies	game/common/technology/technologies	Eras, via 'era' Technologies, via 'unlocking_technologies'
Institutions	common/institutions
Law groups	common/law_groups
Laws	common/laws	Institutions, via 'institution' Law groups, via group Laws, via 'disallowing_laws' Laws, via 'possible_political_movements'
Ideologies	common/ideologies	Law groups, as parameters Laws, via law group parameter mappings
Interest group traits	game/common/interest_group_traits
Interest groups	common/interest_groups	Interest group traits, via 'traits' Ideologies, via 'ideologies'
Production methods	common/production_methods	Technologies, via 'unlocking_technologies' Laws, via 'disallowing_laws' Production methods, via 'unlocking_production_methods'
Production method groups	common/production_method_groups	Production methods, via 'production_methods'
Building groups	common/building_groups	Building groups, via 'parent_group' Building, via 'default_building'
Buildings	common/buildings	Building groups, via 'building_group' Technology, via 'unlocking_technologies' Production method groups, via 'production_method_groups'

Parameters

When creating a game object, you generally need to follow a specific pattern. Here are the parameters for various game objects, what they mean, which are required, and what type of value to enter.

Object type	Parameter	Parameter type	Meaning
Trade goods	texture	string	good icon filepath
	cost	integer	base good price
	category	keyword, one of: staple industrial luxury military	which goods category it belongs to
	prestige_factor	integer	base prestige for being lowest rank leading producer: specifically, holding the MIN_PRESTIGE_AWARD spot.
	traded_quantity	integer	how many goods are traded for each level of a trade route
	convoy_cost_multiplier	floating point number	how many times more convoys are needed to transport this good
	consumption_tax_cost	integer	how much authority it costs to levy a consumption tax note: absence of this parameter implies no consumption tax can be levied
Technology Era	technology_cost	integer	the base technology cost for techs in this era
Technology	era	Technology Era	which era this technology belongs to
	texture	string	technology icon filepath
	category	keyword, one of: production military society	which category this technology belongs to
	modifier	country modifier	which immediate effects this technology has on your country Example: Cotton Gin provides 25% cotton plantation throughput. Unlocked buildings, production methods, laws, etc are specified from the unlocked object, not the unlocking technology.
	unlocking_technologies	list of technologies	All prerequisite technologies. If empty, it has no prerequisites
	can_research	boolean	if 'no', makes it unavailable for normal research. Example: Sericulture.