Light Show

A puzzle game about real Outside Plant (OSP) fiber-optic engineering, built in Rust with Bevy, for Android (Google Play + F-Droid), with a squad of anime-styled AI companions — one per access technology — who react to every splice you make.

Route light from the OLT (Point A) to the customer's ONT (Point B). Hit the target receive-power window. Survive outages. All the loss figures are real: fusion vs. mechanical splice loss, UPC vs. APC connectors, PON splitter ratios, wavelength-dependent fiber attenuation.

Quick start

cargo run -p light-show

See docs/BUILD.md for Android build instructions (Google Play .aab and F-Droid-reproducible cargo-apk paths) and docs/GAME_DESIGN.md for the full design doc, including the link-budget model and level progression.

Meet the companions

Pick a companion from the menu before you start splicing — each one is tied to a real access technology, has her own dialogue bank, and reacts to your splices, outages, and level results in her own voice.

Séraphine — Fiber	Ondine — Coax	Linka — Mobile	Lattice — Ethernet

Full character briefs, palettes, and mood-sheet specs live in docs/ART_STYLE.md.

Project layout

crates/osp_sim/       Engine-agnostic fiber-optic link-budget simulation core
game/                  Bevy application: states, UI, level loading, companions
game/assets/levels/    Level definitions (JSON)
game/assets/dialogue/  Per-companion dialogue banks (JSON, localizable)
game/assets/sprites/   In-engine sprite sheets, incl. companion mood sheets
assets/art/companions/ Source portraits, animated profile GIFs, app icon art
docs/                  Design, art direction, build, and F-Droid docs
fastlane/              Shared Play Store / F-Droid store listing metadata
tools/                 Art generation scripts (placeholder + companion art)

Status

Early scaffold: core simulation (osp_sim) is fully implemented and tested; the Bevy front-end has working state machine, level loading, win condition checking, a live dB ledger UI, a companion-select menu, and all four companions' dialogue/animation systems, backed by real AI-generated portrait art and 64x64 in-engine sprite sheets. Full outage-repair UI is the next milestone — see open issues.

License

GPL-3.0-or-later. See LICENSE and docs/CREDITS.md for asset attribution.

Store compliance

No ads, no in-app purchases, no tracking, no network permission requested — the same build ships unmodified to both Google Play and F-Droid. See docs/FDROID.md for the anti-features checklist.