samples de áudio não reiniciavam ao fim do loop

assets/js/creations/audio/audio_audio.js

@@ -164,46 +164,36 @@ function _schedulerTick() {
   const now = audioCtx.currentTime;
   const logicalTime =
     now - startTime + (appState.audio.audioEditorSeekTime || 0);
+
   const scheduleWindowStartSec = logicalTime;
   const scheduleWindowEndSec = logicalTime + SCHEDULE_AHEAD_TIME_SEC;
 
   for (const clip of appState.audio.clips) {
     const clipRuntime = runtimeClipState.get(clip.id) || { isScheduled: false };
     if (clipRuntime.isScheduled) continue;
-    if (!clip.buffer) continue;
+    if (!clip?.buffer) continue;
 
     const clipStartTimeSec = clip.startTimeInSeconds;
-    const clipDurationSec = clip.durationInSeconds;
-    if (
-      typeof clipStartTimeSec === "undefined" ||
-      typeof clipDurationSec === "undefined"
-    )
-      continue;
+    const clipDurationSec =
+      clip.durationInSeconds ?? clip.buffer?.duration;
 
-    let occurrenceStartTimeSec = clipStartTimeSec;
+    if (typeof clipStartTimeSec === "undefined") continue;
+    if (typeof clipDurationSec === "undefined") continue;
 
+    // ✅ Em modo loop: NÃO “trazer” starts de antes do loopStart pra dentro do loop.
+    // Esses casos são tratados por overlap (clip atravessando loopStart).
     if (isLoopActive) {
       const loopDuration = loopEndTimeSec - loopStartTimeSec;
       if (loopDuration <= 0) continue;
-      if (
-        occurrenceStartTimeSec < loopStartTimeSec &&
-        logicalTime >= loopStartTimeSec
-      ) {
-        const offsetFromLoopStart =
-          (occurrenceStartTimeSec - loopStartTimeSec) % loopDuration;
-        occurrenceStartTimeSec =
-          loopStartTimeSec +
-          (offsetFromLoopStart < 0
-            ? offsetFromLoopStart + loopDuration
-            : offsetFromLoopStart);
-      }
-      if (occurrenceStartTimeSec < logicalTime) {
-        const loopsMissed =
-          Math.floor((logicalTime - occurrenceStartTimeSec) / loopDuration) + 1;
-        occurrenceStartTimeSec += loopsMissed * loopDuration;
+
+      // start fora da janela do loop -> não agenda (senão toca errado e pode “matar” o resto)
+      if (clipStartTimeSec < loopStartTimeSec || clipStartTimeSec >= loopEndTimeSec) {
+        continue;
       }
     }
 
+    const occurrenceStartTimeSec = clipStartTimeSec;
+
     if (
       occurrenceStartTimeSec >= scheduleWindowStartSec &&
       occurrenceStartTimeSec < scheduleWindowEndSec
@@ -211,13 +201,65 @@ function _schedulerTick() {
       const absolutePlayTime =
         startTime +
         (occurrenceStartTimeSec - (appState.audio.audioEditorSeekTime || 0));
+
       _scheduleClip(clip, absolutePlayTime, clipDurationSec);
+
       clipRuntime.isScheduled = true;
       runtimeClipState.set(clip.id, clipRuntime);
     }
   }
 }
 
+/**
+ * ✅ Se a agulha está no meio de um clip (clip começou antes e ainda não acabou),
+ * precisamos iniciar o Player “agora”, com offset adequado.
+ * Isso resolve: seek no meio + reinício do loop + play sem stop em certos casos.
+ */
+function _scheduleOverlappingClipsAtTime(playheadSec) {
+  if (!audioCtx) return;
+
+  const t = Number(playheadSec);
+  if (!isFinite(t) || t < 0) return;
+
+  for (const clip of appState.audio.clips) {
+    if (!clip?.buffer) continue;
+
+    const s = Number(clip.startTimeInSeconds);
+    if (!isFinite(s)) continue;
+
+    const d =
+      Number(clip.durationInSeconds) ||
+      clip.buffer?.duration ||
+      0;
+
+    if (!(d > 0)) continue;
+
+    const e = s + d;
+
+    // clip já começou e ainda estaria tocando nesse playhead
+    if (!(s < t && e > t)) continue;
+
+    // já foi agendado nessa “volta”?
+    const clipRuntime = runtimeClipState.get(clip.id) || { isScheduled: false };
+    if (clipRuntime.isScheduled) continue;
+
+    const baseOffset = clip.offsetInSeconds ?? clip.offset ?? 0;
+
+    // quanto “dentro” do clip estamos
+    const delta = t - s;
+
+    const offset = Math.max(0, baseOffset + delta);
+    const remaining = Math.max(0, e - t);
+
+    // agenda para tocar imediatamente (em termos de AudioContext),
+    // mas sincronizado ao Transport via _scheduleClip()
+    _scheduleClip(clip, audioCtx.currentTime, remaining, offset);
+
+    clipRuntime.isScheduled = true;
+    runtimeClipState.set(clip.id, clipRuntime);
+  }
+}
+
 function _scheduleOverlappingClipsAtLoopStart(loopStartSec, loopEndSec) {
   const loopLen = loopEndSec - loopStartSec;
   if (loopLen <= 0) return;
@@ -270,17 +312,29 @@ function _animationLoop() {
   if (isLoopActive) {
     if (newLogicalTime >= loopEndTimeSec) {
       const loopDuration = loopEndTimeSec - loopStartTimeSec;
+      if (loopDuration > 0) {
         newLogicalTime =
-        loopStartTimeSec + ((newLogicalTime - loopStartTimeSec) % loopDuration);
+          loopStartTimeSec +
+          ((newLogicalTime - loopStartTimeSec) % loopDuration);
+      } else {
+        newLogicalTime = loopStartTimeSec;
+      }
 
-      // 1) reseta relógio lógico
+      // realinha relógio interno
       startTime = now;
       appState.audio.audioEditorSeekTime = newLogicalTime;
 
-      // 2) mantém Transport alinhado
-      try { Tone.Transport.seconds = newLogicalTime; } catch {}
+      // ✅ força o Transport “pular” junto na virada do loop
+      try {
+        // (desativa loop do Transport aqui pra não brigar com a sua lógica de loop da playlist)
+        Tone.Transport.loop = false;
+      } catch {}
 
-      // 3) limpa runtime e mata players antigos
+      try {
+        Tone.Transport.seconds = newLogicalTime;
+      } catch {}
+
+      // ✅ limpa players/estado pra permitir reagendamento limpo
       runtimeClipState.clear();
       scheduledNodes.forEach(({ player }) => {
         try { player.unsync(); } catch {}
@@ -289,22 +343,23 @@ function _animationLoop() {
       });
       scheduledNodes.clear();
 
-      // 4) reinicia patterns (seu comportamento atual)
+      // ✅ reinicia patterns do song (seu scheduler da playlist)
       try {
         stopSongPatternPlaybackOnTransport();
         startSongPatternPlaybackOnTransport();
       } catch {}
 
-      // ✅ 5) reativa imediatamente os clips que atravessam o loopStart (DAW-like)
-      _scheduleOverlappingClipsAtLoopStart(loopStartTimeSec, loopEndTimeSec);
+      // ✅ IMPORTANTÍSSIMO: recomeça clips que atravessam o loopStart
+      _scheduleOverlappingClipsAtTime(newLogicalTime);
 
-      // ✅ 6) agenda imediatamente o que estiver na janela (não espera 25ms)
+      // e já agenda os próximos inícios sem esperar o próximo interval tick
       _schedulerTick();
     }
   }
 
   appState.audio.audioEditorLogicalTime = newLogicalTime;
 
+  // fim do song sem loop
   if (!isLoopActive) {
     let maxTime = 0;
     appState.audio.clips.forEach((clip) => {
@@ -313,8 +368,9 @@ function _animationLoop() {
       const endTime = clipStartTime + clipDuration;
       if (endTime > maxTime) maxTime = endTime;
     });
+
     if (maxTime > 0 && appState.audio.audioEditorLogicalTime >= maxTime) {
-      stopAudioEditorPlayback(true); // Rebobina no fim
+      stopAudioEditorPlayback(true);
       resetPlayheadVisual();
       return;
     }
@@ -323,10 +379,12 @@ function _animationLoop() {
   const pixelsPerSecond = getPixelsPerSecond();
   const newPositionPx = appState.audio.audioEditorLogicalTime * pixelsPerSecond;
   updatePlayheadVisual(newPositionPx);
+
   animationFrameId = requestAnimationFrame(_animationLoop);
 }
 
 
+
 // --- API Pública ---
 
 export function updateTransportLoop() {
@@ -396,6 +454,8 @@ export async function startAudioEditorPlayback(seekTime) {
     const bpm = parseFloat(document.getElementById("bpm-input")?.value) || 120;
     Tone.Transport.bpm.value = bpm;
     Tone.Transport.start();
+    // ✅ se começou no meio de algum clip, inicia com offset correto
+    _scheduleOverlappingClipsAtTime(timeToStart);
   } catch {}
 
   // mantém seu scheduler/animador