This repo implements a GDExtension that adds a Rope2D node, using Verlet Simulation implemented in Rust. Rope2D nodes support collisions with both static and rigid bodies.
You can find an example project in the godot folder.
This is a project I made to learn more about Rust and GDExtensions. While I might not be actively working on this, I hope this can help you in setting up GDExtensions in Rust, or learn more about Verlet simulations!