Doomsday Simulator: Fable physically realistic WebGPU planetary collision SIM

Like all the rest of you I had to take Fable for a spin this week. The result is this physically accurate DOOMSDAY simulator that runs in webgpu in your browser. Lots of fun scenarios with the ability to create your own Armageddon level impactor or larger.

- Various particle types with different densities, properties (gas, water, rock, etc.) - Highly optimized webgpu simulation (could be optimized even more but pretty decent). - Not exactly physically accurate but pretty cool glowy molten lava. - Fun relativistic impactor that turns earth into a gooey glowing donut.

This was written as a one shot, and it did partially work, but the various refinements and especially the optimization was done afterwards.

Running on github pages. MIT licensed and code is at https://github.com/benjcooley/doomsday_simulator

Have fun.