root
102 lines
2.5 KiB
TypeScript
102 lines
2.5 KiB
TypeScript
/** Infrastructure adapter: Web Audio API sound effects. */
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let audioContext: AudioContext | null = null;
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function getAudioContext(): AudioContext | null {
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if (typeof window === 'undefined') return null;
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if (!audioContext) {
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try {
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audioContext = new (window.AudioContext || (window as Window & { webkitAudioContext?: typeof AudioContext }).webkitAudioContext!)();
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} catch {
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return null;
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}
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}
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return audioContext;
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}
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export function playHoverSound() {
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const ctx = getAudioContext();
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if (!ctx) return;
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try {
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const osc = ctx.createOscillator();
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const gain = ctx.createGain();
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const filter = ctx.createBiquadFilter();
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osc.type = 'sine';
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osc.frequency.value = 1100;
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filter.type = 'lowpass';
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filter.frequency.value = 1400;
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gain.gain.value = 0.04;
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osc.connect(filter);
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filter.connect(gain);
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gain.connect(ctx.destination);
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osc.start();
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gain.gain.linearRampToValueAtTime(0.001, ctx.currentTime + 0.12);
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setTimeout(() => osc.stop(), 150);
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} catch {
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// Silent fail
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}
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}
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export function playAddSound() {
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const ctx = getAudioContext();
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if (!ctx) return;
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try {
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const osc = ctx.createOscillator();
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const gain = ctx.createGain();
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const filter = ctx.createBiquadFilter();
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osc.type = 'sine';
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osc.frequency.value = 1080;
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filter.type = 'lowpass';
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filter.frequency.value = 1550;
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gain.gain.value = 0.022;
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osc.connect(filter);
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filter.connect(gain);
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gain.connect(ctx.destination);
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osc.start();
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gain.gain.linearRampToValueAtTime(0.001, ctx.currentTime + 0.08);
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setTimeout(() => osc.stop(), 120);
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} catch {
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// Silent fail
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}
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}
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export function playSuccessSound() {
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const ctx = getAudioContext();
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if (!ctx) return;
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try {
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const notes = [523, 659, 784, 1046];
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notes.forEach((freq, i) => {
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setTimeout(() => {
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try {
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const osc = ctx.createOscillator();
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const gain = ctx.createGain();
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const filter = ctx.createBiquadFilter();
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osc.type = 'sine';
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osc.frequency.value = freq;
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filter.type = 'lowpass';
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filter.frequency.value = 2000;
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gain.gain.value = 0.07;
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osc.connect(filter);
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filter.connect(gain);
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gain.connect(ctx.destination);
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osc.start();
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gain.gain.linearRampToValueAtTime(0.001, ctx.currentTime + 0.5);
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setTimeout(() => osc.stop(), 600);
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} catch {
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// Silent fail
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}
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}, i * 120);
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});
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} catch {
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// Silent fail
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}
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} |