Adaptive soundtrack: urgent drums, crystal shimmer, flawless fanfare - #9
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Music now reacts to the run: - Urgent drum layer (kick/hat patterns per theme) crossfades in when hearts drop to 2 or fewer, a hazard looms within 420px ahead, or the Magma King is in the arena. - Shimmer pad layer (lead +12 semitones with sparkle overtones) sparkles over crystal-dense stretches (4+ uncollected within 280px). - Layers are always scheduled; only gains move, so transitions are click-free and stop/victory fade them out. - Victory fanfare gets a brighter "flawless run" variant (8-note arpeggio + bell shimmer) when the run took no damage; the game tracks hits via a new GameCtx.onPlayerHit hook. - Pure trigger logic lives in src/adaptive.ts (adaptiveFlags) with 9 unit tests; 7 more game-level tests cover hit tracking and fanfare routing. Validated: typecheck, 209/209 tests, build (131.67 kB / 40.43 kB gzip), lint, and headless E2E (gain crossfades measured live, zero page errors).
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Music now reacts to the run:
src/adaptive.ts(adaptiveFlags), wired through a newGameCtx.onPlayerHithook and ahitscounter in the game.Validated locally (CI is failing for pre-existing unrelated reasons, so local validation is the gate):
npm run typecheck✓npm test— 209/209 (was 193; +9 pure adaptive tests, +7 game-level tests) ✓npm run build— 131.67 kB / 40.43 kB gzip ✓npm run lint✓{flawless: true}, post-hit victory routes{flawless: false}, zero page errors ✓Screenshots:
/tmp/tinyrex-e2e/01-urgent.png,02-shimmer.png,03-victory.png