Ivan Fontosh
fed5674468
Wire mimic/pit/arrow/laser media on activate, poison/explosion via effects, and document the scene editor and traps in Instructions. Co-authored-by: Cursor <cursoragent@cursor.com>
64 lines
2.4 KiB
TypeScript
64 lines
2.4 KiB
TypeScript
/** Звук и длительность эффекта «Взрыв» (`public/explosion.mp3` + WebM с альфой). */
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import { getEffectsSfxGain } from './effectsSfxGain';
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const EXPLOSION_SFX_VOLUME = 0.95;
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/** Запас, если метаданные не прочитались (длина webm ~3.97 с). */
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const DEFAULT_EXPLOSION_LIFE_MS = 4200;
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export function explosionEffectSoundUrl(): string {
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return new URL('explosion.mp3', window.location.href).href;
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}
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/** VP8/VP9 WebM с `alpha_mode=1` — рендер через HTML `<video>`, не Pixi. */
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export function explosionEffectVideoUrl(): string {
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return new URL('vfx/explosion/aerial-debris-smoke.webm', window.location.href).href;
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}
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let cachedExplosionSfxDurationMs: number | null = null;
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/** Длительность трека в мс (кэш после первого чтения метаданных). */
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export function getExplosionSfxDurationMs(): Promise<number> {
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if (cachedExplosionSfxDurationMs !== null) {
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return Promise.resolve(cachedExplosionSfxDurationMs);
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}
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const url = explosionEffectSoundUrl();
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return new Promise((resolve) => {
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const a = new Audio();
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const done = (ms: number): void => {
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cachedExplosionSfxDurationMs = ms;
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a.removeAttribute('src');
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resolve(ms);
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};
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a.addEventListener('loadedmetadata', () => {
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const d = a.duration;
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done(Number.isFinite(d) && d > 0 ? Math.round(d * 1000) : DEFAULT_EXPLOSION_LIFE_MS);
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});
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a.addEventListener('error', () => done(DEFAULT_EXPLOSION_LIFE_MS));
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a.src = url;
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a.load();
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});
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}
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/** Длительность визуала ≈ max(звук, webm), с разумными пределами. */
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export async function getExplosionEffectLifeMs(): Promise<number> {
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const sfxMs = await getExplosionSfxDurationMs();
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const raw = Math.max(sfxMs, DEFAULT_EXPLOSION_LIFE_MS);
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return Math.min(60_000, Math.max(600, raw));
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}
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export async function playExplosionEffectSound(lifeMs: number): Promise<void> {
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try {
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const rawMs = await getExplosionSfxDurationMs();
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const target = Math.max(200, lifeMs);
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const rate = Math.max(0.25, Math.min(4, rawMs / target));
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const el = new Audio(explosionEffectSoundUrl());
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el.volume = Math.max(0, Math.min(1, EXPLOSION_SFX_VOLUME * getEffectsSfxGain()));
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el.playbackRate = rate;
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void el.play().catch(() => undefined);
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} catch {
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/* ignore */
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}
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}
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