Remove TTS narration and improve BGM

src/game/audio/SoundDirector.ts

@@ -1,18 +1,4 @@
 type AudioTrackMap = Record<string, string>;
-export type VoiceRole = 'narrator' | 'liuBei' | 'guanYu' | 'zhangFei';
-
-type PitchSafeAudio = HTMLAudioElement & {
-  preservesPitch?: boolean;
-  mozPreservesPitch?: boolean;
-  webkitPreservesPitch?: boolean;
-};
-
-const rolePlayback: Record<VoiceRole, { rate: number; volume: number }> = {
-  narrator: { rate: 0.98, volume: 0.9 },
-  liuBei: { rate: 0.96, volume: 0.92 },
-  guanYu: { rate: 0.84, volume: 0.95 },
-  zhangFei: { rate: 1.05, volume: 1 }
-};
 
 class SoundDirector {
   private context?: AudioContext;
@@ -20,24 +6,16 @@ class SoundDirector {
   private started = false;
   private muted = false;
   private musicTracks: AudioTrackMap = {};
-  private voiceTracks: AudioTrackMap = {};
   private music?: HTMLAudioElement;
-  private voice?: HTMLAudioElement;
   private currentMusicKey?: string;
   private pendingMusicKey?: string;
   private musicFadeTimer?: number;
-  private musicRampTimer?: number;
-  private readonly musicVolume = 0.46;
-  private readonly duckedMusicVolume = 0.18;
+  private readonly musicVolume = 0.56;
 
   registerMusicTracks(tracks: AudioTrackMap) {
     this.musicTracks = tracks;
   }
 
-  registerVoiceTracks(tracks: AudioTrackMap) {
-    this.voiceTracks = tracks;
-  }
-
   start() {
     if (this.started) {
       this.resume();
@@ -74,9 +52,6 @@ class SoundDirector {
     if (this.music) {
       this.music.muted = muted;
     }
-    if (this.voice) {
-      this.voice.muted = muted;
-    }
 
     if (!this.context || !this.master) {
       return;
@@ -130,64 +105,7 @@ class SoundDirector {
     this.music = next;
     this.currentMusicKey = key;
     void next.play().catch(() => undefined);
-    this.fadeMusic(previous, next, this.voice ? this.duckedMusicVolume : this.musicVolume);
-  }
-
-  playVoice(key?: string, role: VoiceRole = 'narrator') {
-    if (!key || !this.started) {
-      this.stopVoice();
-      return;
-    }
-    this.stopVoice(false);
-
-    const src = this.voiceTracks[key];
-    if (!src) {
-      return;
-    }
-
-    const profile = rolePlayback[role] ?? rolePlayback.narrator;
-    const voice = new Audio(src) as PitchSafeAudio;
-    voice.preload = 'auto';
-    voice.muted = this.muted;
-    voice.volume = profile.volume;
-    voice.playbackRate = profile.rate;
-    voice.preservesPitch = false;
-    voice.mozPreservesPitch = false;
-    voice.webkitPreservesPitch = false;
-    voice.addEventListener('ended', () => {
-      if (this.voice === voice) {
-        this.voice = undefined;
-        this.duckMusic(false);
-      }
-    });
-    voice.addEventListener('error', () => {
-      if (this.voice === voice) {
-        this.voice = undefined;
-        this.duckMusic(false);
-      }
-    });
-
-    this.voice = voice;
-    this.duckMusic(true);
-    void voice.play().catch(() => {
-      if (this.voice === voice) {
-        this.voice = undefined;
-        this.duckMusic(false);
-      }
-    });
-  }
-
-  stopVoice(restoreMusic = true) {
-    if (!this.voice) {
-      return;
-    }
-
-    this.voice.pause();
-    this.voice.currentTime = 0;
-    this.voice = undefined;
-    if (restoreMusic) {
-      this.duckMusic(false);
-    }
+    this.fadeMusic(previous, next, this.musicVolume);
   }
 
   private playTone(
@@ -246,38 +164,6 @@ class SoundDirector {
     }, 32);
   }
 
-  private duckMusic(ducked: boolean) {
-    if (!this.music) {
-      return;
-    }
-
-    if (ducked && this.musicFadeTimer) {
-      window.clearInterval(this.musicFadeTimer);
-      this.musicFadeTimer = undefined;
-    }
-
-    if (this.musicRampTimer) {
-      window.clearInterval(this.musicRampTimer);
-    }
-
-    const from = this.music.volume;
-    const to = ducked ? this.duckedMusicVolume : this.musicVolume;
-    const duration = 260;
-    const startedAt = performance.now();
-
-    this.musicRampTimer = window.setInterval(() => {
-      if (!this.music) {
-        return;
-      }
-
-      const progress = Math.min(1, (performance.now() - startedAt) / duration);
-      this.music.volume = from + (to - from) * progress;
-      if (progress >= 1 && this.musicRampTimer) {
-        window.clearInterval(this.musicRampTimer);
-        this.musicRampTimer = undefined;
-      }
-    }, 32);
-  }
 }
 
 declare global {

src/game/audio/audioAssets.ts

@@ -3,16 +3,6 @@ import militiaThemeUrl from '../../assets/audio/bgm/militia-theme.wav';
 import oathThemeUrl from '../../assets/audio/bgm/oath-theme.wav';
 import storyDarkUrl from '../../assets/audio/bgm/story-dark.wav';
 import titleThemeUrl from '../../assets/audio/bgm/title-theme.wav';
-import battleBriefingVoiceUrl from '../../assets/audio/voice/prologue/battle-briefing.wav';
-import firstSortieVoiceUrl from '../../assets/audio/voice/prologue/first-sortie.wav';
-import guanYuJoinsVoiceUrl from '../../assets/audio/voice/prologue/guan-yu-joins.wav';
-import liuBeiResolveVoiceUrl from '../../assets/audio/voice/prologue/liu-bei-resolve.wav';
-import militiaRisesVoiceUrl from '../../assets/audio/voice/prologue/militia-rises.wav';
-import oathBrothersVoiceUrl from '../../assets/audio/voice/prologue/oath-brothers.wav';
-import oathLiuBeiVoiceUrl from '../../assets/audio/voice/prologue/oath-liu-bei.wav';
-import oathNarrationVoiceUrl from '../../assets/audio/voice/prologue/oath-narration.wav';
-import yellowTurbanChaosVoiceUrl from '../../assets/audio/voice/prologue/yellow-turban-chaos.wav';
-import zhangFeiJoinsVoiceUrl from '../../assets/audio/voice/prologue/zhang-fei-joins.wav';
 
 export const musicTracks = {
   'title-theme': titleThemeUrl,
@@ -22,18 +12,4 @@ export const musicTracks = {
   'battle-prep': battlePrepUrl
 } as const;
 
-export const voiceTracks = {
-  'yellow-turban-chaos': yellowTurbanChaosVoiceUrl,
-  'liu-bei-resolve': liuBeiResolveVoiceUrl,
-  'zhang-fei-joins': zhangFeiJoinsVoiceUrl,
-  'guan-yu-joins': guanYuJoinsVoiceUrl,
-  'oath-narration': oathNarrationVoiceUrl,
-  'oath-liu-bei': oathLiuBeiVoiceUrl,
-  'oath-brothers': oathBrothersVoiceUrl,
-  'militia-rises': militiaRisesVoiceUrl,
-  'first-sortie': firstSortieVoiceUrl,
-  'battle-briefing': battleBriefingVoiceUrl
-} as const;
-
 export type MusicTrackKey = keyof typeof musicTracks;
-export type VoiceTrackKey = keyof typeof voiceTracks;

src/game/data/scenario.ts

@@ -1,5 +1,4 @@
 export type PortraitKey = 'liuBei' | 'guanYu' | 'zhangFei';
-export type VoiceRole = 'narrator' | PortraitKey;
 
 export type StoryPage = {
   id: string;
@@ -8,8 +7,6 @@ export type StoryPage = {
   speaker?: string;
   portrait?: PortraitKey;
   bgm?: string;
-  voice?: string;
-  voiceRole?: VoiceRole;
   text: string;
 };
 
@@ -38,8 +35,6 @@ export const prologuePages: StoryPage[] = [
   {
     id: 'yellow-turban-chaos',
     bgm: 'story-dark',
-    voice: 'yellow-turban-chaos',
-    voiceRole: 'narrator',
     chapter: '난세의 시작',
     background: 'story-chaos',
     text: '중평 원년, 황건의 깃발이 각지에서 일어났다. 관군은 흩어지고, 마을마다 피난 행렬이 이어졌다.'
@@ -47,8 +42,6 @@ export const prologuePages: StoryPage[] = [
   {
     id: 'liu-bei-resolve',
     bgm: 'story-dark',
-    voice: 'liu-bei-resolve',
-    voiceRole: 'liuBei',
     chapter: '탁현의 방',
     background: 'story-liu-bei',
     speaker: '유비',
@@ -58,8 +51,6 @@ export const prologuePages: StoryPage[] = [
   {
     id: 'zhang-fei-joins',
     bgm: 'story-dark',
-    voice: 'zhang-fei-joins',
-    voiceRole: 'zhangFei',
     chapter: '뜻이 모이다',
     background: 'story-three-heroes',
     speaker: '장비',
@@ -69,8 +60,6 @@ export const prologuePages: StoryPage[] = [
   {
     id: 'guan-yu-joins',
     bgm: 'story-dark',
-    voice: 'guan-yu-joins',
-    voiceRole: 'guanYu',
     chapter: '뜻이 모이다',
     background: 'story-three-heroes',
     speaker: '관우',
@@ -80,8 +69,6 @@ export const prologuePages: StoryPage[] = [
   {
     id: 'oath-narration',
     bgm: 'oath-theme',
-    voice: 'oath-narration',
-    voiceRole: 'narrator',
     chapter: '도원결의',
     background: 'title-taoyuan',
     text: '복숭아꽃이 흩날리는 동산에서 세 사람은 하늘과 땅에 고했다.'
@@ -89,8 +76,6 @@ export const prologuePages: StoryPage[] = [
   {
     id: 'oath-liu-bei',
     bgm: 'oath-theme',
-    voice: 'oath-liu-bei',
-    voiceRole: 'liuBei',
     chapter: '도원결의',
     background: 'title-taoyuan',
     speaker: '유비',
@@ -100,8 +85,6 @@ export const prologuePages: StoryPage[] = [
   {
     id: 'oath-brothers',
     bgm: 'oath-theme',
-    voice: 'oath-brothers',
-    voiceRole: 'guanYu',
     chapter: '도원결의',
     background: 'title-taoyuan',
     speaker: '관우',
@@ -111,8 +94,6 @@ export const prologuePages: StoryPage[] = [
   {
     id: 'militia-rises',
     bgm: 'militia-theme',
-    voice: 'militia-rises',
-    voiceRole: 'zhangFei',
     chapter: '의용군 모집',
     background: 'story-militia',
     speaker: '장비',
@@ -122,8 +103,6 @@ export const prologuePages: StoryPage[] = [
   {
     id: 'first-sortie',
     bgm: 'battle-prep',
-    voice: 'first-sortie',
-    voiceRole: 'liuBei',
     chapter: '첫 출진',
     background: 'story-sortie',
     speaker: '유비',
@@ -133,8 +112,6 @@ export const prologuePages: StoryPage[] = [
   {
     id: 'battle-briefing',
     bgm: 'battle-prep',
-    voice: 'battle-briefing',
-    voiceRole: 'narrator',
     chapter: '황건적 토벌',
     background: 'story-sortie',
     text: '의용군은 마을 어귀로 향했다. 첫 싸움은 곧 시작된다.'

src/game/scenes/BattleScene.ts

@@ -25,7 +25,6 @@ export class BattleScene extends Phaser.Scene {
 
   create() {
     const { width, height } = this.scale;
-    soundDirector.stopVoice();
     soundDirector.playMusic('battle-prep');
     this.add.rectangle(0, 0, width, height, 0x0f1418).setOrigin(0);
     this.drawMap();

src/game/scenes/StoryScene.ts

@@ -116,7 +116,6 @@ export class StoryScene extends Phaser.Scene {
 
   private applyPage(page: StoryPage) {
     soundDirector.playMusic(page.bgm);
-    soundDirector.playVoice(page.voice, page.voiceRole ?? page.portrait ?? 'narrator');
     this.applyBackground(page.background);
     this.chapterText?.setText(page.chapter);