digital-garbageandClaude Sonnet 5.5
01fc0e4a71
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
12 lines
486 B
JavaScript
12 lines
486 B
JavaScript
// Where on the timeline "now" is, in seconds. One number, shared by whoever draws or acts at it.
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export function createPlayhead() {
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let at = 0;
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const heard = new Set();
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return {
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playing: false, // set by the monitor; read by whatever sounds along with it
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get at() { return at; },
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set(sec) { const next = Math.max(0, sec); if (next === at) return; at = next; heard.forEach((fn) => fn(at)); },
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on(fn) { heard.add(fn); return () => heard.delete(fn); },
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};
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}
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