Racing Game Prototype Update 🌧️🏎️ Rain reacting to gravity, wind and the car’s movement, with droplets naturally flowing across the body. Also featuring some shots from the cinematic editor I’m building for the final game.
Panos Karabelas
@panoskarabelas
Sep 26
Racing Game Prototype Update 🏎️🏝️ Millions of individual grass blades reacting to wind and your driving. Tires physically deforming based on pressure and environmental temperature. AI traffic and NPCs with full ragdoll physics. Car simulation that goes beyond the typical racing game. And one massive Mediterranean island to drive across. Still very much a prototype, but one I aim to put on Steam one day.

Sep 27, 2026 · 4:30 PM UTC

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Replying to @panoskarabelas
Awesome! How did you implement it? I did a similar effect for flat surfaces a long time ago, by just moving particles in 2D space and transforming 3D wind into the plane. But yours looks like a real (3D) deal, like it actually respects the curvature of the car...
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Thanks! I bake the car body into six height maps (±X, ±Y, ±Z). Each drop is a 3D point on that body. Every update, gravity, the car acceleration and airflow get projected onto the tangent plane of the texel under the drop, so it follows the curvature.
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Replying to @panoskarabelas
Dude this is gonna be fire!! What game engine will this be made on? And how much more efficient is it compared to BeamNG's engine?
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Thanks, the engine you see in the video: github.com/PanosK92/SpartanE…

GitHub - PanosK92/SpartanEngine: A game engine with a fully bindless, GPU-driven renderer featuring...

A game engine with a fully bindless, GPU-driven renderer featuring real-time path-traced global illumination, hardware ray tracing, and a physics simulation running at 200Hz, built over 12+ years o...

github.com
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Replying to @panoskarabelas
that looks amazing man
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Replying to @panoskarabelas
Turn on the global illumination
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Replying to @panoskarabelas
Rain drops are amazing Panos great job!
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Replying to @panoskarabelas
that’s so cool
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