Stage 3.9 — Procedural Audio - #17
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100% synthesized WebAudio (no asset files), pure presentation (read-only bus listener; never touches the sim). Typecheck + build green, smoke test clean. Sound: combat thud, tonal metallic door slide/clang, typed event cues, UI confirm/deny, a sine ambient bed that swells with riot pressure (near-silent when calm), and a brief alarm warble on lockdown onset (not an endless klaxon). Topbar mute toggle, persisted to localStorage; AudioContext unlocks on first tap. Adversarial-review fixes: - Re-prime door state on Load/New-Run (no stray clang). - Topbar chips/mute-button shrink+wrap on small phones (no overflow at lockdown). - actionResult plays confirm on success, soft 'no' on failure. - Clamp persisted volume; detach unlock listeners after first use; drop fragile glideTo=0. User feedback addressed: noise-based door/ambient sounds (read as "static") reworked to tonal synthesis; long repetitive alarm klaxon -> brief onset warble. Version -> v3.9.0-audio; CHANGELOG 3.9 entry + README updates. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Per playtest feedback ("i like a little long, just the noise was bad"): the alarm
is sustained again while a lockdown/alarm is active, but as a SMOOTH triangle
hi-lo siren with gentle tremolo + soft fade in/out — not the harsh square klaxon
and not the too-brief onset warble.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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The game's first sound — 100% synthesized WebAudio (no asset files). Pure presentation:
AudioSystemonly listens to theEventBus+ reads a per-frame tension snapshot; it never touches the simulation.Sound
localStorage; AudioContext unlocks on first tap (mobile autoplay-safe).Invariants
RenderSync+AudioSystemnever write sim state. Save format unchanged (v12).Verification
npm run typecheck+npm run buildgreen (49 modules); headless-Chrome smoke test green (0 console/page errors, self-test clean, mute button renders).What's next
Toward a modern Hard Time — candidate next stages: settings menu (volume slider + difficulty), world expansion, or a sentence/notoriety meta-loop.
🤖 Generated with Claude Code