A plug-in for Unreal Engine that provides logic and content for building an RPG with mechanics similar to Pathfinder™ 2nd Edition by Paizo Publishing.

All abilities and stats are implemented using the Gameplay Ability System (GAS) plug-in that ships with Unreal Engine.

This plug-in is still in an early stage of development. We are attempting to model as much of the PF2 Core Rulebook as possible. You can track our progress and see which parts of the PF2 Core Rulebook match which parts of the codebase here:

https://1drv.ms/x/s!AigXEMxuXyh0gpRnYs8NlW-gC2oMnA?e=K8dHvP

1. Check-out the project into the Plugins/ folder of your larger UE4 project. Ensure that the folder into which you check-out the project is named OpenPF2Core.
2. Modify the *.uproject file of your larger UE4 project to ensure that both the OpenPF2Core and GameplayAbilities plug-ins are enabled, like so:

   "Plugins": [
     {
       "Name": "GameplayAbilities",
       "Enabled": true
     },
     {
       "Name": "OpenPF2Core",
       "Enabled": true
     }
   ]

3. Re-generate Visual Studio/Rider project files.
4. Edit the *.Build.cs file and add "OpenPF2Core" to the PrivateDependencyModuleNames section:

   PrivateDependencyModuleNames.AddRange(new string[]
   {
       "OpenPF2Core",
   });

5. Compile your project.
6. Copy the Config/Tags/ folder from the plug-in into your project's Config folder. Even in UE 4.27, this is still required. The engine does not automatically scan or package config files provided by plugins.

Since this plug-in incorporates content and elements that were originally created by Paizo Publishing, the code in this repository is licensed under a mix of the Open Game License (OGL) version 1.0a and the Mozilla Public License version 2.0. See LICENSE.txt for details on what portions of the code base are covered by each license.

All code in this project is licensed in a way that is compatible with the Unreal Engine End User License Agreement For Publishing. However, if you are attempting to use this code with other game engines (e.g., Unity) or projects that are not based on Unreal Engine, be aware that rare, select portions of the code are licensed from Epic Games only for use with Unreal Engine and will need to be removed from your copy of the project.

For information about precisely which license applies to a source file, consult its file header. If you encounter a file that lacks a license in its header, please file an issue.

If you are developing a commercial, proprietary, or closed-source game or project that is otherwise incompatible with the open-source OGL and MPL licensing of this plug-in, the author is willing to discuss alternate, custom licensing.

The license will be among the following parties:

• The licensee (you).
• The author of this plug-in project (Guy Elsmore-Paddock).
• Paizo Publishing (for Pathfinder 2E Core Mechanics).

If you are interested in a custom license, please DM me on Twitter.

Pathfinder 2E materials—including the Core Rulebook—use imperial units (feet), but Unreal Engine uses metric units, so OpenPF2 does as well. In the real world, 1 foot is equal to 0.3048 meters; but, to avoid having to deal with decimal values, OpenPF2 uses a simple conversion of 1.5 meters per 5 feet that slightly rounds values (1.5 meters equals ~4.92 feet in the real world).

To convert units provided by Pathfinder 2E materials into those used in OpenPF2, simply multiply the provided value (in feet) by a ratio of 1.5/5. For example, if a weapon has a range of 60 feet, then its range in OpenPF2 is 60 feet * 1.5 meters/5 feet = 18 meters.