porglezomp-misc / lovr

Virtual Reality Engine

LÖVR

A simple Lua framework for rapidly building VR experiences.

You can use LÖVR to easily create VR experiences without much setup or programming experience. The framework is tiny, fast, open source, and supports lots of different platforms and devices.

Homepage | Documentation | FAQ

Features

• Cross-Platform - Runs on Windows, Mac, Linux, Android, and even on the web using WebAssembly and WebVR.
• Cross-Device - Supports Vive/Index, Oculus Rift/Go/Quest, Windows MR, and includes a desktop VR simulator.
• Beginner-friendly - Simple VR scenes can be created in just a few lines of Lua.
• Fast - Writen in C99 and scripted with LuaJIT, includes optimized single-pass stereo rendering.
• Asset Import - Supports 3D models (glTF, OBJ), skeletal animation, HDR textures, cubemaps, fonts, etc.
• Spatialized Audio - Audio is automatically spatialized using HRTFs.
• Vector Library - Efficient first-class support for 3D vectors, quaternions, and matrices.
• 3D Rigid Body Physics - Including 4 collider shapes and 4 joint types.
• Compute Shaders - For high performance GPU tasks, like particles.
• Multiplayer - Includes enet for multi-user VR experiences.

Getting Started

It's really easy to get started making things with LÖVR. Grab a copy of the executable from https://lovr.org/download, then write a main.lua script and drag its parent folder onto the executable. Here are some example projects to try:

Hello World

function lovr.draw()
  lovr.graphics.print('Hello World!', 0, 1.7, -3, .5)
end

Spinning Cube

function lovr.draw()
  lovr.graphics.cube('line', 0, 1.7, -1, .5, lovr.timer.getTime())
end

Hand Tracking

function lovr.draw()
  for _, hand in ipairs(lovr.headset.getHands()) do
    lovr.graphics.sphere(vec3(lovr.headset.getPosition(hand)), .1)
  end
end

3D Models

function lovr.load()
  model = lovr.graphics.newModel('model.gltf')
end

function lovr.draw()
  model:draw(x, y, z)
end

You can try more examples in your browser on the docs page.

Building

You can build LÖVR from source using CMake. Here are the steps using the command line:

mkdir build
cd build
cmake ..
cmake --build .

See the Compiling Guide for more info.

Resources

• Documentation: Guides, tutorials, examples, and API documentation.
• FAQ: Frequently Asked Questions.
• Slack Group: For general LÖVR discussion and support.
• matrix.org: Decentralized alternative to Slack.
• Nightly Builds: Nightly builds for Windows.
• Compiling Guide: Information on compiling LÖVR from source.
• Contributing: Guide for helping out with development 💜
• LÖVE: LÖVR is heavily inspired by LÖVE, a 2D game framework.

Contributors

• @bjornbytes
• @shakesoda
• @bcampbell
• @mcclure
• @nevyn

License

MIT, see LICENSE for details.