Show HN: Cartopolis, interactive globe-sized 3D world

Category: other

Tags: 3d, rust, bevy, geospatial, shared-world, floating-origin

Score: 7.5/10 (Innovation: 8, Technical: 9, Documentation: 7, Utility: 6)

Cartopolis is an open-source, shared 3D replica of the real world built in Rust with Bevy and public geodata, enabling walkable exploration of Earth-scale environments. It leverages a vendored 'big_space' floating-origin system for floating-point precision across massive scales, and includes a simulation server, end-to-end encrypted chat/calls, and cross-platform support (desktop, web, Android). The project is technically ambitious but currently limited in detailed geodata coverage to the Netherlands.

Target audience: game developers, graphics engineers, geospatial developers, Rust enthusiasts

Repository: https://code.garage44.eu/jeroen/cartopolis · Rust · Apache-2.0 · 410 stars

View on Hacker News