Kwayk — Rebuilding Quake in Qt Quick3D powered by Jolt Physics via custom C++ plugin

[glazunov999]

Hello!
I have rebuilt the legendary Quake from scratch using Qt Quick3D and QML. Initially, I tried using the official Qt physics module (PhysX), but ran into issues with fast-moving entities and CCD. To fix this, I wrote a custom C++ plugin to integrate Jolt Physics directly into the Qt Quick3D render loop. It works flawlessly for full BSP map collisions, triggers, and continuous collision detection. Runs on Desktop and inside browsers via WebAssembly (Emscripten). Looking for any feedback on architecture, Jolt integration, and performance!

GitHub Repository:
https://github.com/glazunov999/Kwayk

LibreQuake episode 0 Live Demo:
https://glazunov999.github.io/

Quick3D Jolt Physics Plugin Source:
https://github.com/glazunov999/qtquick3djoltphysics

[jrouwe]

That looks nice! It looks pretty complete too. I took a quick look at your code and it looks sensible to me. Did you measure performance? Is there anything standing out?

[glazunov999]

Thank you so much for the kind words and for adding Kwayk to the README! It’s an amazing surprise!

Kwayk is a hobby project meant to help newcomers to Qt Quick3D better understand these technologies. I haven't run any performance benchmarks yet, but everything runs super smooth. I'm sure it's not lagging behind the native Quick3D.Physics module, but I should definitely check the numbers later. Thanks again!