reone

reone is a free and open source game engine, capable of running Star Wars: Knights of the Old Republic and its sequel, The Sith Lords. We aim to provide an engine that is flexible and modern, and can be used to:

• Play KotOR and TSL from beginning to end
• Create mods that drastically change the gameplay or improve the visuals

The project is in the early stages of development at this point: resource management, scene management, rendering, audio, GUI and scripting subsystems are already implemented, while game mechanics are actively being worked on. See project gallery and roadmap in the Wiki.

Contributing

reone is open to potential contributors. Contact me at vkremianskii@gmail.com or on Discord if you're interested in taking a particular task from the roadmap.

Developer resources:

• Project Architecture
• Code Style
• Tooling
• Research
• Knowledge Database

Installation

Those wishing to test reone, can either download a prebuilt executable from the releases page, or build it from source. Building it requires a modern C++ compiler and a set of free and open source libraries. See detailed instructions for your operating system here.

reone must only be used to run a legal copy of the game - both KotOR and TSL can be obtained from Steam or GOG.com. Keep in mind that mod compatibility is not being tested and thus cannot be guaranteed.

Install Visual C++ Redistributable to run prebuilt Windows executables.

Usage

Specify a game path to run the game, e.g. reone --game C:\swkotor

Controls:

• Use WASD and ZC keys to move around
• Left click to interact with an object
• Right click and move the mouse to rotate the camera
• Press Space to pause the game
• Press "~" to toggle the debug console

Developer mode controls:

• Press V to switch the camera type
• Use "+" and "-" keys to adjust the game speed

Configuration

reone can be configured from either a command line or a configuration file. Configuration file, named "reone.cfg", must be located in the current directory. See a complete list of options here.

Similar Projects

reone is not the only project aiming to reimplement the Odyssey engine - there are at least four alternatives:

• xoreos - a reimplementation of BioWare's Aurora engine and its derivatives.
• KotOR.js - a remake of the Odyssey engine written in JavaScript.
• The Northern Lights - a Unity-based reimplementation and a level editor.
• KotOR-Unity - another Unity-based reimplementation.

In contrast, this is what reone offers:

• KotOR and TSL only, unlike xoreos, which aims to reimplement all of Aurora engine games - codebase is lighter and development is more focused.
• Written in C++ - industry standard language, faster than the JavaScript implementation.
• Custom game engine based on SDL 2 and OpenGL 3.3 - does not depend on Unity, which is a proprietary software with a learning curve of itself.