HPL3/Amnesia: Rebirth/Modding/Creating a Mod

This article describes in detail how to create, setup and structure your mod.
Important: Make sure you have a folder named mods in your game directory. If you do not have it, then just create an empty folder and name it mods.

Tip: The game offers a basic example mod: MinimalCustomMapMod. You can copy it or use it as reference for creating your own mod.

Tip: It is recommended to use the HPL3 Mod Manager to configure everything that is listed on this page.

Mod Types

Amnesia: Rebirth has one mod type called a Stand-Alone mod.

Stand-Alone Mod

A Stand-Alone mod describes a mod of any scale: From a simple mod with a few maps to an extensive game modification of custom assets and custom scripts.

Mod Structure

A typical mod structure (folders and files) may look like this:

modFolder/
├── config/
│   ├── lang/
│   │   ├── english.lang
│   ├── main_init.cfg
├── maps/
├── entry.hpc
├── resources.cfg

The mod structure may change and have more or less files, depends on your mod type, but it's important to have entry.hpc and resources.cfg for every mod.

Mod Entry File

When creating a mod, be it a simple add-on or a fully fledged total conversion, an entry file is needed so that the mod can be listed by the custom stories menu or simply be started by the game. This means that an XML file with name entry.hpc needs to be created in the root directory of the mod, and its contents will depend on what kind of mod you are creating.

Setting up the Entry File

Tip: It is recommended to copy one the sample mod (MinimalCustomMap) provided in this page and edit the files, instead of doing this manually. This way, you won't miss anything by mistake.

1. Create a file named entry.hpc in your mod's root folder.
2. Paste the following content into the file and save:

   <?xml version="1.0" encoding="UTF-8"?>
   <Content Version="1.0"
   	Type="StandAlone"
   	Title="Your mod name here"
   	Author="Your name here"
   	Description_english="Mod description here"
   	
   	LauncherPic="LauncherPic.png"
   	InitCfg="config/main_init.cfg"
   />
   

Common Attributes

Any valid entry.hpc file (like the one shown above), will have at least the following attributes:

Version	The version for the mod, since the mod might get updated in the future.
Type	The type for the content the mod is offering. Possible is"StandAlone".
Title	This sets the title for the mod. It should not be longer than 128 characters, especially if the mod is to be uploaded to the Steam Workshop.
Author	The creator(s) of the mod. This will be shown below the title on the info column in the custom stories menu.
Description_English	The description of the mod. Should not exceed 8000 characters for the same reason as the title. For localizing descriptions, add a translated entry for the target language under the Description_(name of target language) parameter.
LauncherPic	The file to be used as a thumbnail picture for the Custom Story menu page.
InitCfg	The relative path to the file which information when initializing the mod. The default value is "config/main_init.cfg" and usually shouldn't be changed.

Tip: Unsure about how to label your mod versions? Read about semantic versioning here

Special Attributes

There are special attributes which can be added to a mod entry file in order to enable optional functionalities:

UID	A string in the form "provider_name.mod_name". This is used so other mods can reference your mod as a Mod Dependency
Dependencies	A list of UIDs separated by commas. The resources in these mods will be available to the game when the current mod is running.

Mod Configuration Files

In addition to the mod entry file, the mod needs to be correctly configured in order to load resources such as maps, script, sounds, sounds, etc (As seen in the Mod Structure diagram).

Read the following articles in order to understand how to set up and configure them:

• Resources Configuration
• Launch Configuration
• Language Configuration

It is recommended to copy the files from the mods provided with the game and modify them, instead of creating them on your own.

Running the Mod

There are two different ways to run a mod:

1.Through the Custom Story menu page in Main menu: This method should generally be used when testing the final version of your mod. After selecting the mod, the game will restart and will load the mod.

Custom Stories menu.

2.Command Line: To run a mod directly with dev features enabled, you only need to run the game executable passing the "-mod" argument followed by word local: and then immediately the name of the mod folder. This method should be used throughout the development of your mod.

Example:

AmnesiaRebirth.exe -mod local:my_mod

There are more arguments which can be added to the command line. It is recommended to create a .bat file which will launch the mod.

Warning: If you do not run the game with -mod command and your mod uses custom assets, you won't be able to see the assets in-game!

Main article: Developer Commands

What's Next

Now that the mod is set up, you may proceed to set up a Modding Environment for your game, and learn how to use the Developer Debug Menu. it is also recommended to set up an online repository. More articles are available in the main Amnesia: Rebirth modding category.

See Also

• Mod Content Usage