Sextant — Captain of Industry Planner

A production planning calculator for Captain of Industry. Build factory graphs, define production goals, and let a linear programming solver tell you exactly how many machines you need.

https://joshrp.github.io/sextant/

Features

• Visual factory graph editor built on React Flow
• Linear programming solver (HiGHS.js) with multiple optimisation strategies (infrastructure cost, inputs, footprint, outputs)
• Full game data coverage — recipes, machines, products, mines, storages
• Multiple production zones and factories per plan
• Import/export factory designs (Base85 encoded)
• Recyclables breakdown for downstream scrap planning

Bug Reports & Feature Requests

Please open an issue on the GitHub issue tracker.

Development

npm install        # install dependencies
npm run dev        # dev server on :5173
npm run build      # production build
npm test           # unit + component tests
npm run cosmos     # component visual testing (React Cosmos)
npm run typecheck  # type check
npm run lint       # lint

Game data is generated from mod exports in data/raw/. Regenerate with npm run formatData.

Contributing

Contributions are welcome via pull request. For larger changes, consider opening an issue first to discuss your approach.

License

GPL-3.0