The leak alarm: an enemy entering the blue gate plays the official stage sound (ON_ENEMY_REACHED_EXIT), one alarm per burst (#134)

Battle.leak emits its own 'leak' event, which no sound handled, so every leak was silent; the client now plays battle.ON_ENEMY_REACHED_EXIT (b_ui_alarmenter) with the bank's own one-at-a-time rule, leaks closer than the sound's length sharing one alarm. The manifest gains only audio.sfx.battle.leak. Contributed by @Convey123.

data/assets.json

@@ -1 +1 @@
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docs/ASSETS.md

@@ -182,7 +182,7 @@ All paths are URL paths relative to the site root, for example `/assets/char/ava
                 defenceStart, defenceUnite, battleOverReduce, battleOverNoReduce, battleOverNormal, goFirst,
                 disconnect, settlementSucceed, settlementFail, settlementTeam, settlementBossSign,
                 goodEvaluation, load, start, matchSucceed, matchFail, matchCancel, joinRoom },
-      battle: { deploy, tokenDeploy, charDie, enemyDie, enemyDieHeavy, enemyHit, heal, win, lose, killCoin },
+      battle: { deploy, tokenDeploy, charDie, enemyDie, enemyDieHeavy, enemyHit, heal, leak, win, lose, killCoin },
       units:  { [charId|tokenId|enemyId]: { attack?, hit?, skill?, skills?: {[skillIndex]: url}, die?, born?,
                 mix?: { [attack|hit|die|born]: { p?, vol? } } } }
     }

docs/PLAYING.md

@@ -88,6 +88,7 @@
 - 联防中击杀悬赏敌人，资金归击杀者。
 - 联防后仍然存活的敌人，按原主人扣 LP；没人完美作战时直接扣。
 - 漏怪的玩家在顶栏中间（击倒数旁）看到橙色的「×N」标签：你漏过、仍在联防战场上的敌人数（含还没出场的，**不设上限**），队友每击倒一个就减一（会分裂或召唤的敌人被击倒时，分裂出的敌人也算你的，数字会相应增加）；目标生命值同时显示为扣除 min(N, 10) 后的数值。左侧队伍栏里漏怪队友的行也显示 ×N（与战场上的击倒同步更新；鼠标悬停可看到是谁漏过的敌人）。
+- **有敌人走进蓝门就会响一声**：不等它真的扣到目标生命值——一回合里超过 10 点上限的那部分、数据里标明不计数目的敌人（BOSS 部件之类），以及联防里漏过去、随后被队友清掉的那几只，目标生命值都不会再扣，但这一声照样会响。播的是**原版关卡里怪进蓝门那一声**（官方音效表里的 `ON_ENEMY_REACHED_EXIT`，任何一关都是它）。你正在看哪个战场就听哪个战场的，所以看队友的战场、以及漏怪后观看联防时同样听得到。这一声 1.44 秒，我们按官方的「同时只允许一个」做成 **1.5 秒内共用一声**：一波打穿防线只响一遍（不会叠成一片），过一会儿再漏会再响。
 - 每个普通回合每人**最多扣 10 点 LP**。
 
 ## 6. 盟约

public/js/audio.js

@@ -53,6 +53,15 @@ const MAX_VOICES = 8;
 const UNIT_COOLDOWN_MS = 160;
 const URL_GAP_MS = 45;
 const MAX_PER_URL = 2;
+/**
+ * 漏怪: the original Arknights exit alarm (`sfx.battle.leak`, `battle/b_ui/b_ui_alarmenter`) runs **1.44 s**, and the
+ * official bank is a one-shot: `battle.ON_ENEMY_REACHED_EXIT` carries `maxSoundAllowed: 1` with `popOldest: true` on the
+ * `Battle_UI_Important` mixer, i.e. **never two at once** (a new escape replaces the one still ringing). We keep the
+ * "never two at once" half and leave the rest of the cue alone: leaks closer together than the cue is long are the same
+ * disaster and share one alarm, so a line that breaks costs one clear ring per 1.5 s instead of a stutter of restarts.
+ * (The SFX limiter still applies on top.)
+ */
+const LEAK_SFX_GAP_MS = 1500;
 const BUFFER_CACHE = 180;
 /** Decoded-PCM budget of the buffer cache beside its entry count: a voice line decodes to 0.4–1.3 MB (see _buffer). */
 const BUFFER_BYTES = 64 * 1024 * 1024;
@@ -971,6 +980,16 @@ export class AudioManager {
           const mix = own ? m.audio.sfx.units[u.def].mix?.die : null;
           if (!unitSoundPlays(mix, this.random())) continue;
           this._playUnitUrl(url, own ? `${e[1]}:die` : `die:${e[1]}`, own ? unitGain(0.8, mix) : 0.7);
+        } else if (kind === 'leak') {
+          // 漏怪: an enemy reached its goal (Battle.leak emits the sim's own EV.LEAK — it is NOT a `die`, so until now a
+          // leak was completely silent, for the player's own field and for a 联防 the helpers could not hold alike).
+          // The cue is the ORIGINAL Arknights stage alarm — the one an enemy entering the exit plays in any normal
+          // stage (manifest `sfx.battle.leak`, bank battle.ON_ENEMY_REACHED_EXIT, file b_ui_alarmenter).
+          // `LEAK_SFX_GAP_MS` keeps it to one alarm at a time (the official bank's own maxSoundAllowed 1).
+          if (now - (this.lastLeakSfxAt ?? -Infinity) < LEAK_SFX_GAP_MS) continue;
+          if (typeof this.getManifest()?.audio?.sfx?.battle?.leak !== 'string') continue;
+          this.lastLeakSfxAt = now;
+          this.battle('leak', { unitKey: 'leak', volume: 0.85 });
         } else if (kind === 'deploy') {
           const u = this.units.get(e[1]);
           if (!u || u.side === 'enemy') continue;

test/ui/audio.test.js

@@ -650,3 +650,62 @@ describe('impact sounds (user playtest #4 item 6)', () => {
     } finally { globalThis.performance = perf; restore(); }
   });
 });
+
+// =====================================================================================================================
+// 漏怪 sound (user request "接下来加漏怪的音效", then "应该是原版明日方舟关卡中的怪进蓝门的音效"). The sim emits
+// `['leak', id]` when an enemy reaches its goal (Battle.leak) — NOT a `die` — so until now an escape was completely
+// silent, for the player's own field and for a 联防 the helpers could not hold alike.
+//
+// The cue is the ORIGINAL Arknights stage alarm an enemy entering the exit plays in any normal stage: the manifest's
+// `sfx.battle.leak`, bank `battle.ON_ENEMY_REACHED_EXIT`, file `Battle/b_ui/b_ui_alarmenter`. (The autochess banks
+// have nothing named for an escape — all 13,948 SFX banks searched — but the stage itself does.) The official bank is
+// a one-shot: `maxSoundAllowed: 1` with `popOldest: true` on the `Battle_UI_Important` mixer.
+
+describe('漏怪 sound', () => {
+  async function rig() {
+    const fw = fakeWindow();
+    const urls = [];
+    const origFetch = globalThis.fetch;
+    globalThis.fetch = async (u) => { urls.push(u); return { ok: true, arrayBuffer: async () => new ArrayBuffer(8) }; };
+    const a = new AudioManager({ win: fw.win, getManifest: () => manifest });
+    a.install();
+    fw.fire('pointerdown');
+    const settle = () => new Promise((r) => setTimeout(r, 10));
+    return { a, fw, urls, settle, restore: () => { globalThis.fetch = origFetch; } };
+  }
+
+  test('an escaped enemy plays the original stage exit alarm — and no death sound (a leak is not a `die`)', async () => {
+    const { a, urls, settle, restore } = await rig();
+    try {
+      const url = manifest.audio.sfx.battle.leak;
+      assert.ok(url, '前提：清单里有 sfx.battle.leak');
+      assert.match(url, /b_ui_alarmenter\.mp3$/, '就是原版关卡里怪进蓝门那一声');
+      a.handleBattleEvents([['leak', 7]]);
+      await settle();
+      assert.ok(asked(urls, url), `漏怪 plays ${url}`);
+      assert.equal(askedCount(urls, manifest.audio.sfx.battle.enemyDie), 0, 'a leak is not a death — no death sound');
+    } finally { restore(); }
+  });
+
+  test('leaks of one disaster are ONE alarm (the cue is 1.44 s long), a later one rings again', async () => {
+    const { a, fw, urls, settle, restore } = await rig();
+    try {
+      const url = manifest.audio.sfx.battle.leak;
+      a.handleBattleEvents([['leak', 1]]);
+      await settle();
+      assert.equal(askedCount(urls, url), 1, 'the first escape rings');
+      // the plays themselves, not the fetches: the buffer is cached after the first one
+      const before = fw.made.started;
+      // six more at once — a wiped board, or a 联防 the helpers could not hold
+      a.handleBattleEvents([['leak', 2], ['leak', 3], ['leak', 4], ['leak', 5], ['leak', 6], ['leak', 7]]);
+      await settle();
+      assert.equal(fw.made.started - before, 0, 'one disaster never stacks alarms (the official bank allows 1)');
+      // a genuine later leak is a new disaster and rings again, once the cue (1.44 s) has finished
+      await new Promise((r) => setTimeout(r, 1600));
+      a.handleBattleEvents([['leak', 8]]);
+      await settle();
+      assert.equal(fw.made.started - before, 1, 'a later leak rings again');
+      assert.ok(a.limiter.active <= a.limiter.maxVoices);
+    } finally { restore(); }
+  });
+});

tools/assets/audio.mjs

@@ -252,6 +252,11 @@ export const BATTLE_SFX = Object.freeze({
   enemyDieHeavy: { path: 'battle/b_enemy/b_enemy_dead_h.mp3' },
   enemyHit: { path: 'enemy/e_imp/e_imp_general_w.mp3' },
   heal: { bank: 'battle.ON_MODIFIER_HEAL' },
+  // 漏怪: an enemy reached the exit. This is the ORIGINAL Arknights stage cue (`battle.ON_ENEMY_REACHED_EXIT` ->
+  // `Battle/b_ui/b_ui_alarmenter`), not an autochess one — the mode itself has no bank named for an escape (all 13,948
+  // SFX banks of audio_data.json searched). The official treats it as a one-shot alarm: `maxSoundAllowed: 1` with
+  // `popOldest: true` on the `Battle_UI_Important` mixer, so a new escape replaces the one still playing.
+  leak: { bank: 'battle.ON_ENEMY_REACHED_EXIT' },
   win: { path: 'battle/b_ui/b_ui_win.mp3' },
   lose: { path: 'battle/b_ui/b_ui_lose.mp3' },
   killCoin: { bank: 'battle.ON_CUSTOM_TRIGGER.autochess_kill_gain_coin' },