src/managers/AudioManager.ts

@@ -3,6 +3,12 @@ import { logger } from "@/utils/core/logger";
 export type AudioCategory = "music" | "sfx" | "dialogue";
 export type OneShotAudioCategory = Exclude<AudioCategory, "music">;
 
+const DEFAULT_CATEGORY_VOLUMES: Record<AudioCategory, number> = {
+  music: 1,
+  sfx: 1,
+  dialogue: 1,
+};
+
 interface PlaySoundOptions {
   category?: OneShotAudioCategory;
   playbackRate?: number;
@@ -11,8 +17,12 @@ interface PlaySoundOptions {
 export class AudioManager {
   private static _instance: AudioManager | null = null;
   private readonly _audioPools = new Map<string, HTMLAudioElement[]>();
+  private readonly _categoryVolumes: Record<AudioCategory, number> = {
+    ...DEFAULT_CATEGORY_VOLUMES,
+  };
   private _music: HTMLAudioElement | null = null;
   private _musicPath: string | null = null;
+  private _musicVolume = 1;
   private _musicUnlockHandler: (() => void) | null = null;
 
   private static readonly MAX_POOL_SIZE_PER_SOUND = 6;
@@ -32,10 +42,22 @@ export class AudioManager {
 
   private constructor() {}
 
+  setCategoryVolume(category: AudioCategory, volume: number): void {
+    this._categoryVolumes[category] = AudioManager._clampVolume(volume);
+
+    if (category === "music" && this._music) {
+      this._music.volume = this._getEffectiveVolume("music", this._musicVolume);
+    }
+  }
+
+  getCategoryVolume(category: AudioCategory): number {
+    return this._categoryVolumes[category];
+  }
+
   playSound(path: string, volume = 1, options: PlaySoundOptions = {}): void {
     const audio = this._acquireAudio(path);
     const category = options.category ?? AudioManager.DEFAULT_SOUND_CATEGORY;
-    audio.volume = Math.max(0, Math.min(1, volume));
+    audio.volume = this._getEffectiveVolume(category, volume);
     audio.playbackRate = options.playbackRate ?? 1;
     audio.currentTime = 0;
 
@@ -56,8 +78,10 @@ export class AudioManager {
   }
 
   playMusic(path: string, volume = 1): void {
+    this._musicVolume = AudioManager._clampVolume(volume);
+
     if (this._musicPath === path && this._music) {
-      this._music.volume = Math.max(0, Math.min(1, volume));
+      this._music.volume = this._getEffectiveVolume("music", this._musicVolume);
       if (!this._music.paused) return;
     } else {
       this.stopMusic();
@@ -66,7 +90,7 @@ export class AudioManager {
       this._musicPath = path;
     }
 
-    this._music.volume = Math.max(0, Math.min(1, volume));
+    this._music.volume = this._getEffectiveVolume("music", this._musicVolume);
 
     void this._music.play().catch((error: unknown) => {
       if (
@@ -151,6 +175,14 @@ export class AudioManager {
     this._musicUnlockHandler = null;
   }
 
+  private _getEffectiveVolume(category: AudioCategory, volume: number): number {
+    return AudioManager._clampVolume(volume) * this._categoryVolumes[category];
+  }
+
+  private static _clampVolume(volume: number): number {
+    return Math.max(0, Math.min(1, volume));
+  }
+
   private static _toLogValue(error: unknown): Error | DOMException | string {
     if (error instanceof Error || error instanceof DOMException) {
       return error;