A Geometry Dash-style one-button runner for the Rabbit R1, with an original Mega Man-inspired chiptune soundtrack. Port of Geometry Stick (M5StickC PLUS): the same physics, chunk library and fairness rules, rebuilt as an R1 Creation (240x282 WebView).
Play / install: https://joefts.github.io/geometry-r1/src/index.html. On the R1, scan docs/install-qr.png.
| | R1 | Desktop | |—|—|—| | Jump (cube) / thrust (ship) | tap or hold the screen, side button click / long-press | Space | | Pick level (menu) | scroll wheel | ↑ / ↓ | | Volume (in a run) | scroll wheel | ↑ / ↓ | | Retry / menu | tap RETRY / MENU on the death card | Space / Esc |
Levels: NORMAL (cube) · HARD (cube + gravity portals) · EXPERT (ship + gravity portals). Endless: the world speeds up from 180 to 270 px/s and the music tempo rises with it.
All original, synthesized live with Web Audio (no audio files): a 25% pulse lead with vibrato and echo, a 12.5% pulse arpeggio, a triangle bass, and noise drums.
Previews: docs/audio/*.mp3 (offline renders of the same synth code).
src/engine.mjs pure physics + endless generator (port of geometry-stick main.cpp)
src/chunks.mjs 33 cube + 11 ship chunks
src/music.mjs chiptune synth + lookahead sequencer; src/songs.mjs the songs
src/game.mjs screens, input (touch + R1 side button / wheel), canvas renderer
src/bot.mjs look-ahead autopilot (tests, ?bot=1 demo)
src/storage.mjs creationStorage.plain (Base64) with localStorage fallback
tools/verify.mjs fairness solver running the real engine: every chunk + chunk pair, 180 & 270 px/s
test/botrun.mjs bot plays the live generator on all difficulties to max speed
test/r1-emulation.mjs Chromium at 240x282 + R1 hardware events + creationStorage stub + 4x CPU throttle
npm test (solver + bot), npm run dev then npm run e2e (browser suite, screenshots to docs/screens).
Any chunk edit: npm run verify must print 0 impossible.