Awesome
rk4-starknet
Running Runge-Kutta 4th Order Method on StarkNet - a precurosr to on-chain physics engine.
Demo: 2d oscillator under Earth's gravity
<img width="792" alt="lonely-soul-screenshot" src="https://user-images.githubusercontent.com/59590480/137377338-f9cb9d3b-7d80-4b89-9932-5febd97ebd03.png">