Shumi Physarum

Interactive mycelial network simulator — emergent fungal transport networks with gold/amber color palette. Built with p5.js.

Features

• Real-time simulation — Agent-based mycelial growth model with chemical trails, diffusion, and decay

• Seed system — Deterministic seeds for reproducible patterns. Randomize or bookmark favorites

• Full parameter control — Agent count, speed, sensor distance/angle, turn speed, deposit, decay, diffusion, nutrient sources, trail brightness, agent glow

• Recommended ranges — Each slider shows the sweet spot for producing clean mycelial networks

• Custom color palette — Three-stop gradient (background, primary trail, accent)

• Cursor influence — Mouse interaction attracts or repels agents

• Recording — Record individual seeds or batch-record bookmarked seeds as WebM video

• Fullscreen recording — Records at 1920x1080 with spawn point at 35% from top (designed for landing page hero backgrounds)

• Birth-to-maturity growth — Simulation starts from a single spawn point and grows outward

Usage

Open index.html in a browser. No build step required.

Or use GitHub Pages — enable Pages on the repo and visit the published URL.

Controls

• Sidebar sliders — Adjust all simulation parameters in real time

• Seed input — Enter a specific seed or click Randomize

• Bookmark — Save seeds you like for batch recording later

• Record — Capture the current simulation as WebM video

• Fullscreen Record — Hide sidebar and record at full 1920x1080

• Batch Record — Automatically record all bookmarked seeds sequentially

Tech

Single-file HTML application using:

• p5.js for canvas rendering

• Canvas captureStream() + MediaRecorder API for video capture

• No dependencies beyond p5.js (loaded from CDN)

License

MIT