Coriolis Game JS

Coriolis Game JS is a small browser-based simulation of projectile motion inside a rotating cylinder habitat. You launch projectiles from the inner surface and observe how Coriolis and centrifugal effects reshape the path in the rotating reference frame.

Highlights

• Drag-to-launch interaction with a capped maximum shot speed
• Adjustable angular velocity from -0.50 to 0.50 RPM
• Real-time display of launch speed relative to local tangential speed
• Lightweight static deployment: no build step, no backend, no package install

Running Locally

Because the project is a static web app, any basic HTTP server is enough.

Option 1: Python

python -m http.server 8000

Then open http://localhost:8000.

Option 2: Node.js

npx serve .

Controls

• Click and drag inside the cylinder to aim and set launch speed.
• Release the pointer to fire.
• Use the RPM slider to change habitat rotation speed and direction.

Production Notes

• Phaser is pinned to an exact CDN version in index.html for reproducible deployments.
• The simulation loop is frame-rate compensated so trajectories are more consistent across machines.
• Only the five most recent projectiles remain visible to keep the scene readable.

Project Structure

• index.html: app shell, styles, controls, and script loading
• main.js: Phaser scene, drag handling, projectile updates, and rotating-frame forces

License

Copyright (C) 2026 Daniel Häggström.

This project is licensed under the GNU General Public License v3.0 or later. See LICENSE.