feat: FlowAsync调整

Assets/Editor/FrameAnimation/FrameAnimationGraphEditorWindow.cs

@@ -1803,6 +1803,14 @@ namespace AibisDream.FrameAnimation.Editor
             AddReadOnly(body, "ID", flow.Id);
             AddReadOnly(body, "Entry Node", flow.EntryNodeId);
             AddBoundProperty(body, serialized, property.FindPropertyRelative("displayName"), "Display Name");
+            AddBoundProperty(
+                body,
+                serialized,
+                property.FindPropertyRelative("asyncCompletionMode"),
+                "Async Completion");
+            body.Add(CreateCallout(
+                "Only affects async playback when the resolved terminal clip loops.",
+                "fa-callout--info"));
             AddBoundProperty(body, serialized, property.FindPropertyRelative("hasEndBehaviorOverride"), "Override End Behavior");
             AddBoundProperty(body, serialized, property.FindPropertyRelative("endBehaviorOverride"), "End Behavior");
 
@@ -2513,6 +2521,14 @@ namespace AibisDream.FrameAnimation.Editor
                 EditorGUILayout.PropertyField(property.FindPropertyRelative("entryNodeId"));
             }
             EditorGUILayout.PropertyField(property.FindPropertyRelative("displayName"));
+            EditorGUILayout.PropertyField(
+                property.FindPropertyRelative("asyncCompletionMode"),
+                new GUIContent(
+                    "Async Completion",
+                    "Only affects async playback when the resolved terminal clip loops."));
+            EditorGUILayout.HelpBox(
+                "Async Completion only affects a Flow whose resolved terminal clip loops.",
+                MessageType.Info);
             EditorGUILayout.PropertyField(property.FindPropertyRelative("hasEndBehaviorOverride"));
             if (property.FindPropertyRelative("hasEndBehaviorOverride").boolValue)
             {

Assets/Scripts/FrameAnimation/Runtime/FrameAnimationData.cs

@@ -90,12 +90,15 @@ namespace AibisDream.FrameAnimation
         [SerializeField] private string id = string.Empty;
         [SerializeField] private string displayName = string.Empty;
         [SerializeField] private string entryNodeId = string.Empty;
+        [SerializeField] private AnimationFlowAsyncCompletionMode asyncCompletionMode =
+            AnimationFlowAsyncCompletionMode.CompleteOnTerminalLoopStart;
         [SerializeField] private bool hasEndBehaviorOverride;
         [SerializeField] private FrameClipEndBehavior endBehaviorOverride;
 
         public string Id => id;
         public string DisplayName => displayName;
         public string EntryNodeId => entryNodeId;
+        public AnimationFlowAsyncCompletionMode AsyncCompletionMode => asyncCompletionMode;
         public FrameClipEndBehavior? EndBehaviorOverride =>
             hasEndBehaviorOverride ? endBehaviorOverride : (FrameClipEndBehavior?)null;
 
@@ -107,11 +110,14 @@ namespace AibisDream.FrameAnimation
             string id,
             string displayName,
             string entryNodeId,
-            FrameClipEndBehavior? endBehaviorOverride = null)
+            FrameClipEndBehavior? endBehaviorOverride = null,
+            AnimationFlowAsyncCompletionMode asyncCompletionMode =
+                AnimationFlowAsyncCompletionMode.CompleteOnTerminalLoopStart)
         {
             this.id = id ?? string.Empty;
             this.displayName = displayName ?? this.id;
             this.entryNodeId = entryNodeId ?? string.Empty;
+            this.asyncCompletionMode = asyncCompletionMode;
             SetEndBehaviorOverride(endBehaviorOverride);
         }
 
@@ -135,6 +141,11 @@ namespace AibisDream.FrameAnimation
         {
             entryNodeId = value ?? string.Empty;
         }
+
+        internal void SetAsyncCompletionMode(AnimationFlowAsyncCompletionMode value)
+        {
+            asyncCompletionMode = value;
+        }
     }
 
     [Serializable]

Assets/Scripts/FrameAnimation/Runtime/FrameAnimationPlaybackHandle.cs

@@ -5,6 +5,25 @@ using UnityEngine;
 
 namespace AibisDream.FrameAnimation
 {
+    public sealed class FrameAnimationPlaybackAwaitable : CustomYieldInstruction
+    {
+        private readonly FrameAnimationPlayer player;
+
+        public FrameAnimationPlaybackHandle PlaybackHandle { get; }
+
+        internal FrameAnimationPlaybackAwaitable(
+            FrameAnimationPlayer player,
+            FrameAnimationPlaybackHandle playbackHandle)
+        {
+            this.player = player;
+            PlaybackHandle = playbackHandle ??
+                throw new ArgumentNullException(nameof(playbackHandle));
+        }
+
+        public override bool keepWaiting =>
+            player != null && player.ShouldWaitForAsyncCompletion(PlaybackHandle);
+    }
+
     public sealed class FrameAnimationPlaybackHandle : CustomYieldInstruction
     {
         private readonly TaskCompletionSource<FrameAnimationPlaybackResult> completionSource =

Assets/Scripts/FrameAnimation/Runtime/FrameAnimationPlaybackSession.cs

@@ -97,6 +97,31 @@ namespace AibisDream.FrameAnimation
         public int CurrentFrameIndex => hasStarted && !hasCompleted ? frameIndex : -1;
         public FrameClip CurrentClip => CurrentStep?.Clip;
         internal bool HasCompletedFirstTerminalLoopCycle => hasCompletedFirstTerminalLoopCycle;
+        internal bool HasReachedAsyncCompletionPoint
+        {
+            get
+            {
+                if (!hasStarted || plan.Steps == null || plan.Steps.Count == 0)
+                {
+                    return false;
+                }
+
+                var terminalStep = plan.Steps[plan.Steps.Count - 1];
+                if (terminalStep.TerminalEndBehavior != FrameClipEndBehavior.Loop)
+                {
+                    return hasCompleted;
+                }
+
+                if (!plan.IsFlow ||
+                    plan.AsyncCompletionMode ==
+                    AnimationFlowAsyncCompletionMode.WaitForTerminalLoopFirstCycle)
+                {
+                    return hasCompletedFirstTerminalLoopCycle;
+                }
+
+                return stepIndex == plan.Steps.Count - 1;
+            }
+        }
         internal FrameAnimationPlaybackSnapshot Snapshot =>
             new FrameAnimationPlaybackSnapshot(
                 hasStarted,

Assets/Scripts/FrameAnimation/Runtime/FrameAnimationPlayer.cs

@@ -138,18 +138,22 @@ namespace AibisDream.FrameAnimation
             return PlayInternal(playableId, options);
         }
 
-        /// <summary>
+        public FrameAnimationPlaybackAwaitable PlayAsync()
-        /// 等待当前播放请求完成首轮。非循环请求等待自然结束；终点为 Loop 的请求在
-        /// 第一次回绕后结束等待，但播放请求本身保持活动并继续循环。
-        /// </summary>
-        public CustomYieldInstruction WaitForFirstPass(FrameAnimationPlaybackHandle playbackHandle)
         {
-            if (playbackHandle == null)
+            var playableId = graph?.Settings?.DefaultPlayableId ?? string.Empty;
-            {
+            return PlayAsyncInternal(playableId, default);
-                throw new ArgumentNullException(nameof(playbackHandle));
         }
 
-            return new FirstPassYieldInstruction(this, playbackHandle);
+        public FrameAnimationPlaybackAwaitable PlayAsync(string playableId)
+        {
+            return PlayAsyncInternal(playableId, default);
+        }
+
+        public FrameAnimationPlaybackAwaitable PlayAsync(
+            string playableId,
+            FrameAnimationPlayOptions options)
+        {
+            return PlayAsyncInternal(playableId, options);
         }
 
         public bool TryBindGraph(
@@ -404,6 +408,15 @@ namespace AibisDream.FrameAnimation
             return handle;
         }
 
+        private FrameAnimationPlaybackAwaitable PlayAsyncInternal(
+            string playableId,
+            FrameAnimationPlayOptions options)
+        {
+            return new FrameAnimationPlaybackAwaitable(
+                this,
+                PlayInternal(playableId, options));
+        }
+
         private bool TryCreateTarget(
             out IFrameAnimationTarget resolvedTarget,
             out FrameAnimationPlaybackError error)
@@ -527,31 +540,15 @@ namespace AibisDream.FrameAnimation
         private Action<Sprite> ApplySpriteCallback =>
             applySpriteCallback ??= ApplySprite;
 
-        private bool ShouldWaitForFirstPass(FrameAnimationPlaybackHandle playbackHandle)
+        internal bool ShouldWaitForAsyncCompletion(
+            FrameAnimationPlaybackHandle playbackHandle)
         {
             if (playbackHandle.IsCompleted || activeHandle != playbackHandle || session == null)
             {
                 return false;
             }
 
-            return !session.HasCompletedFirstTerminalLoopCycle;
+            return !session.HasReachedAsyncCompletionPoint;
-        }
-
-        private sealed class FirstPassYieldInstruction : CustomYieldInstruction
-        {
-            private readonly FrameAnimationPlayer player;
-            private readonly FrameAnimationPlaybackHandle playbackHandle;
-
-            public FirstPassYieldInstruction(
-                FrameAnimationPlayer player,
-                FrameAnimationPlaybackHandle playbackHandle)
-            {
-                this.player = player;
-                this.playbackHandle = playbackHandle;
-            }
-
-            public override bool keepWaiting =>
-                player != null && player.ShouldWaitForFirstPass(playbackHandle);
         }
 
         private void ApplyEndBehavior(FrameClipEndBehavior endBehavior)

Assets/Scripts/FrameAnimation/Runtime/FrameAnimationResolver.cs

@@ -28,12 +28,19 @@ namespace AibisDream.FrameAnimation
         public string PlayableId { get; }
         public bool IsFlow { get; }
         public IReadOnlyList<ResolvedPlaybackStep> Steps { get; }
+        public AnimationFlowAsyncCompletionMode AsyncCompletionMode { get; }
 
-        public ResolvedPlaybackPlan(string playableId, bool isFlow, IReadOnlyList<ResolvedPlaybackStep> steps)
+        public ResolvedPlaybackPlan(
+            string playableId,
+            bool isFlow,
+            IReadOnlyList<ResolvedPlaybackStep> steps,
+            AnimationFlowAsyncCompletionMode asyncCompletionMode =
+                AnimationFlowAsyncCompletionMode.WaitForTerminalLoopFirstCycle)
         {
             PlayableId = playableId;
             IsFlow = isFlow;
             Steps = steps;
+            AsyncCompletionMode = asyncCompletionMode;
         }
     }
 
@@ -278,7 +285,11 @@ namespace AibisDream.FrameAnimation
                 currentNodeId = edge.ToNodeId;
             }
 
-            plan = new ResolvedPlaybackPlan(flow.Id, true, steps);
+            plan = new ResolvedPlaybackPlan(
+                flow.Id,
+                true,
+                steps,
+                flow.AsyncCompletionMode);
             return true;
         }
 

Assets/Scripts/FrameAnimation/Runtime/FrameAnimationTypes.cs

@@ -20,6 +20,12 @@ namespace AibisDream.FrameAnimation
         Always
     }
 
+    public enum AnimationFlowAsyncCompletionMode
+    {
+        CompleteOnTerminalLoopStart = 0,
+        WaitForTerminalLoopFirstCycle = 1
+    }
+
     public enum FrameAnimationPlaybackState
     {
         Stopped,

Assets/Scripts/SceneManagement/ActorKit/FrameAnimationActor.cs

@@ -95,12 +95,13 @@ namespace AibisDream
 
         public override IEnumerator ChangeStateAsync(string stateName)
         {
-            if (!TryPlay(stateName, false, out var handle))
+            if (!TryPlayAsync(stateName, out var awaitable))
             {
                 yield break;
             }
 
-            yield return _player.WaitForFirstPass(handle);
+            yield return awaitable;
+            var handle = awaitable.PlaybackHandle;
             if (handle.IsCompleted)
             {
                 LogFailedResult(stateName, handle.Result);
@@ -141,6 +142,50 @@ namespace AibisDream
             out FrameAnimationPlaybackHandle handle)
         {
             handle = null;
+            if (!CanPlay(stateName))
+            {
+                return false;
+            }
+
+            handle = restoreTerminalState
+                ? _player.RestoreTerminalState(stateName)
+                : _player.Play(stateName);
+            if (handle.IsCompleted &&
+                handle.Result.Reason == FrameAnimationCompletionReason.Failed)
+            {
+                LogFailedResult(stateName, handle.Result);
+                return false;
+            }
+
+            _currentStateName = stateName;
+            return true;
+        }
+
+        private bool TryPlayAsync(
+            string stateName,
+            out FrameAnimationPlaybackAwaitable awaitable)
+        {
+            awaitable = null;
+            if (!CanPlay(stateName))
+            {
+                return false;
+            }
+
+            awaitable = _player.PlayAsync(stateName);
+            var handle = awaitable.PlaybackHandle;
+            if (handle.IsCompleted &&
+                handle.Result.Reason == FrameAnimationCompletionReason.Failed)
+            {
+                LogFailedResult(stateName, handle.Result);
+                return false;
+            }
+
+            _currentStateName = stateName;
+            return true;
+        }
+
+        private bool CanPlay(string stateName)
+        {
             if (!_isReady || _player == null)
             {
                 Debug.LogError(
@@ -157,17 +202,6 @@ namespace AibisDream
                 return false;
             }
 
-            handle = restoreTerminalState
-                ? _player.RestoreTerminalState(stateName)
-                : _player.Play(stateName);
-            if (handle.IsCompleted &&
-                handle.Result.Reason == FrameAnimationCompletionReason.Failed)
-            {
-                LogFailedResult(stateName, handle.Result);
-                return false;
-            }
-
-            _currentStateName = stateName;
             return true;
         }
 

Assets/Tests/FrameAnimation/EditMode/FrameAnimationCoreTests.cs

@@ -36,7 +36,8 @@ namespace AibisDream.FrameAnimation.Tests.EditMode
                 "Flow",
                 "Flow",
                 node.InternalId,
-                FrameClipEndBehavior.Clear);
+                FrameClipEndBehavior.Clear,
+                AnimationFlowAsyncCompletionMode.WaitForTerminalLoopFirstCycle);
             var graph = CreateGraph(
                 new[] { clip },
                 new[] { node },
@@ -55,6 +56,9 @@ namespace AibisDream.FrameAnimation.Tests.EditMode
             Assert.That(
                 clone.Flows[0].EndBehaviorOverride,
                 Is.EqualTo(FrameClipEndBehavior.Clear));
+            Assert.That(
+                clone.Flows[0].AsyncCompletionMode,
+                Is.EqualTo(AnimationFlowAsyncCompletionMode.WaitForTerminalLoopFirstCycle));
         }
 
         [Test]
@@ -126,6 +130,107 @@ namespace AibisDream.FrameAnimation.Tests.EditMode
             Assert.That(session.CurrentClipId, Is.EqualTo(idle.Id));
             Assert.That(session.CurrentNodeId, Is.EqualTo(idleNode.InternalId));
             Assert.That(session.CurrentFrameIndex, Is.EqualTo(2));
+            Assert.That(
+                plan.AsyncCompletionMode,
+                Is.EqualTo(AnimationFlowAsyncCompletionMode.CompleteOnTerminalLoopStart));
+            Assert.That(session.HasReachedAsyncCompletionPoint, Is.True);
+        }
+
+        [Test]
+        public void PlaybackSession_FlowAsyncCompletionHonorsTerminalLoopPolicy()
+        {
+            var intro = CreateClip("Intro", FrameClipEndBehavior.HoldLastFrame, 1f, 100);
+            var idle = CreateClip("Idle", FrameClipEndBehavior.Loop, 1f, 100);
+
+            var completeOnStartPlan = new ResolvedPlaybackPlan(
+                "CompleteOnStart",
+                true,
+                new[]
+                {
+                    new ResolvedPlaybackStep(
+                        intro,
+                        "intro-node",
+                        1f,
+                        FrameClipEndBehavior.HoldLastFrame),
+                    new ResolvedPlaybackStep(
+                        idle,
+                        "idle-node",
+                        1f,
+                        FrameClipEndBehavior.Loop)
+                },
+                AnimationFlowAsyncCompletionMode.CompleteOnTerminalLoopStart);
+            var completeOnStartSession = new FrameAnimationPlaybackSession(completeOnStartPlan);
+            completeOnStartSession.Start(_ => { });
+
+            Assert.That(completeOnStartSession.HasReachedAsyncCompletionPoint, Is.False);
+            completeOnStartSession.Evaluate(0.1d, 1f, _ => { });
+            Assert.That(completeOnStartSession.CurrentClipId, Is.EqualTo(idle.Id));
+            Assert.That(completeOnStartSession.CurrentFrameIndex, Is.Zero);
+            Assert.That(completeOnStartSession.HasReachedAsyncCompletionPoint, Is.True);
+
+            var waitForCyclePlan = new ResolvedPlaybackPlan(
+                "WaitForCycle",
+                true,
+                completeOnStartPlan.Steps,
+                AnimationFlowAsyncCompletionMode.WaitForTerminalLoopFirstCycle);
+            var waitForCycleSession = new FrameAnimationPlaybackSession(waitForCyclePlan);
+            waitForCycleSession.Start(_ => { });
+            waitForCycleSession.Evaluate(0.1d, 1f, _ => { });
+
+            Assert.That(waitForCycleSession.CurrentClipId, Is.EqualTo(idle.Id));
+            Assert.That(waitForCycleSession.HasReachedAsyncCompletionPoint, Is.False);
+            waitForCycleSession.Evaluate(0.1d, 1f, _ => { });
+            Assert.That(waitForCycleSession.HasCompletedFirstTerminalLoopCycle, Is.True);
+            Assert.That(waitForCycleSession.HasReachedAsyncCompletionPoint, Is.True);
+        }
+
+        [Test]
+        public void PlaybackSession_DirectLoopClipAlwaysWaitsForFirstCycle()
+        {
+            var loop = CreateClip("Loop", FrameClipEndBehavior.Loop, 1f, 100);
+            Assert.That(
+                FrameAnimationResolver.TryResolveClip(
+                    loop,
+                    default,
+                    out var plan,
+                    out var error),
+                Is.True,
+                error.ToString());
+            var session = new FrameAnimationPlaybackSession(plan);
+            session.Start(_ => { });
+
+            Assert.That(session.HasReachedAsyncCompletionPoint, Is.False);
+            session.Evaluate(0.1d, 1f, _ => { });
+            Assert.That(session.HasReachedAsyncCompletionPoint, Is.True);
+        }
+
+        [Test]
+        public void PlaybackSession_FiniteFlowCompletesNaturallyForEitherPolicy()
+        {
+            var clip = CreateClip("Finite", FrameClipEndBehavior.HoldLastFrame, 1f, 100);
+            foreach (AnimationFlowAsyncCompletionMode mode in Enum.GetValues(
+                         typeof(AnimationFlowAsyncCompletionMode)))
+            {
+                var plan = new ResolvedPlaybackPlan(
+                    $"Finite-{mode}",
+                    true,
+                    new[]
+                    {
+                        new ResolvedPlaybackStep(
+                            clip,
+                            "finite-node",
+                            1f,
+                            FrameClipEndBehavior.HoldLastFrame)
+                    },
+                    mode);
+                var session = new FrameAnimationPlaybackSession(plan);
+                session.Start(_ => { });
+
+                Assert.That(session.HasReachedAsyncCompletionPoint, Is.False);
+                var evaluation = session.Evaluate(0.1d, 1f, _ => { });
+                Assert.That(evaluation.IsCompleted, Is.True);
+                Assert.That(session.HasReachedAsyncCompletionPoint, Is.True);
+            }
         }
 
         [Test]

Assets/Tests/FrameAnimation/PlayMode/FrameAnimationPlayerTests.cs

@@ -112,6 +112,151 @@ namespace AibisDream.FrameAnimation.Tests.PlayMode
             Assert.That(player.CurrentPlayableId, Is.EqualTo(second.Id));
         }
 
+        [Test]
+        public void PlayAsync_FlowCompletesAtConfiguredTerminalLoopBoundary()
+        {
+            var introSprite = CreateSprite(Color.red);
+            var idleSprite = CreateSprite(Color.green);
+            var intro = CreateClip("Intro", FrameClipEndBehavior.HoldLastFrame, introSprite);
+            var idle = CreateClip("Idle", FrameClipEndBehavior.Loop, idleSprite);
+
+            var completeOnStartObject = Track(new GameObject("Complete On Loop Start"));
+            var completeOnStartRenderer = completeOnStartObject.AddComponent<SpriteRenderer>();
+            var completeOnStartPlayer = completeOnStartObject.AddComponent<FrameAnimationPlayer>();
+            var completeOnStartGraph = CreateFlowGraph(
+                intro,
+                idle,
+                AnimationFlowAsyncCompletionMode.CompleteOnTerminalLoopStart);
+            completeOnStartPlayer.ConfigureForAuthoring(completeOnStartGraph, false, 1f);
+
+            var completeOnStart = completeOnStartPlayer.PlayAsync("Flow");
+            Assert.That(completeOnStart.keepWaiting, Is.True);
+            Assert.That(completeOnStartRenderer.sprite, Is.SameAs(introSprite));
+
+            completeOnStartPlayer.EvaluateForTests(0.1d);
+
+            Assert.That(completeOnStartRenderer.sprite, Is.SameAs(idleSprite));
+            Assert.That(completeOnStart.keepWaiting, Is.False);
+            Assert.That(completeOnStart.PlaybackHandle.IsCompleted, Is.False);
+            Assert.That(completeOnStartPlayer.State, Is.EqualTo(FrameAnimationPlaybackState.Playing));
+
+            var waitForCycleObject = Track(new GameObject("Wait For Loop Cycle"));
+            waitForCycleObject.AddComponent<SpriteRenderer>();
+            var waitForCyclePlayer = waitForCycleObject.AddComponent<FrameAnimationPlayer>();
+            var waitForCycleGraph = CreateFlowGraph(
+                intro,
+                idle,
+                AnimationFlowAsyncCompletionMode.WaitForTerminalLoopFirstCycle);
+            waitForCyclePlayer.ConfigureForAuthoring(waitForCycleGraph, false, 1f);
+
+            var waitForCycle = waitForCyclePlayer.PlayAsync("Flow");
+            waitForCyclePlayer.EvaluateForTests(0.1d);
+            Assert.That(waitForCycle.keepWaiting, Is.True);
+
+            waitForCyclePlayer.EvaluateForTests(0.1d);
+            Assert.That(waitForCycle.keepWaiting, Is.False);
+            Assert.That(waitForCycle.PlaybackHandle.IsCompleted, Is.False);
+        }
+
+        [Test]
+        public void PlayAsync_SingleNodeLoopFlowCompletesAfterApplyingFirstFrame()
+        {
+            var sprite = CreateSprite(Color.yellow);
+            var loop = CreateClip("Loop", FrameClipEndBehavior.Loop, sprite);
+            var node = new AnimationNode(loop.Id);
+            var flow = new AnimationFlow("Flow", "Flow", node.InternalId);
+            var graph = CreateGraph(
+                new[] { loop },
+                new[] { node },
+                Array.Empty<AnimationEdge>(),
+                new[] { flow },
+                flow.Id);
+            var gameObject = Track(new GameObject("Single Loop Flow"));
+            var renderer = gameObject.AddComponent<SpriteRenderer>();
+            var player = gameObject.AddComponent<FrameAnimationPlayer>();
+            player.ConfigureForAuthoring(graph, false, 1f);
+
+            var awaitable = player.PlayAsync(flow.Id);
+
+            Assert.That(renderer.sprite, Is.SameAs(sprite));
+            Assert.That(awaitable.keepWaiting, Is.False);
+            Assert.That(awaitable.PlaybackHandle.IsCompleted, Is.False);
+        }
+
+        [Test]
+        public void PlayAsync_DirectLoopClipWaitsForFirstCycle()
+        {
+            var loop = CreateClip(
+                "Loop",
+                FrameClipEndBehavior.Loop,
+                CreateSprite(Color.white));
+            var gameObject = Track(new GameObject("Direct Loop Clip"));
+            gameObject.AddComponent<SpriteRenderer>();
+            var player = gameObject.AddComponent<FrameAnimationPlayer>();
+            player.ConfigureForAuthoring(CreateGraph(loop), false, 1f);
+
+            var awaitable = player.PlayAsync(loop.Id);
+            Assert.That(awaitable.keepWaiting, Is.True);
+
+            player.EvaluateForTests(0.1d);
+
+            Assert.That(awaitable.keepWaiting, Is.False);
+            Assert.That(awaitable.PlaybackHandle.IsCompleted, Is.False);
+        }
+
+        [UnityTest]
+        public IEnumerator PlayAsync_AwaitableCanBeYieldedDirectly()
+        {
+            var clip = CreateClip(
+                "Finite",
+                FrameClipEndBehavior.HoldLastFrame,
+                CreateSprite(Color.cyan));
+            var gameObject = Track(new GameObject("Yield Async Player"));
+            gameObject.AddComponent<SpriteRenderer>();
+            var player = gameObject.AddComponent<FrameAnimationPlayer>();
+            player.ConfigureForAuthoring(CreateGraph(clip), false, 1f);
+
+            var awaitable = player.PlayAsync(clip.Id);
+            yield return awaitable;
+
+            Assert.That(awaitable.keepWaiting, Is.False);
+            Assert.That(
+                awaitable.PlaybackHandle.Result.Reason,
+                Is.EqualTo(FrameAnimationCompletionReason.Completed));
+        }
+
+        [Test]
+        public void PlayAsync_FailureAndReplacementReleaseAwaitable()
+        {
+            var first = CreateClip(
+                "First",
+                FrameClipEndBehavior.Loop,
+                CreateSprite(Color.white));
+            var second = CreateClip(
+                "Second",
+                FrameClipEndBehavior.Loop,
+                CreateSprite(Color.black));
+            var gameObject = Track(new GameObject("Async Arbitration"));
+            gameObject.AddComponent<SpriteRenderer>();
+            var player = gameObject.AddComponent<FrameAnimationPlayer>();
+            player.ConfigureForAuthoring(CreateGraph(first, second), false, 1f);
+
+            var failed = player.PlayAsync("Missing");
+            Assert.That(failed.keepWaiting, Is.False);
+            Assert.That(
+                failed.PlaybackHandle.Result.Error.Code,
+                Is.EqualTo(FrameAnimationPlaybackErrorCode.PlayableNotFound));
+
+            var active = player.PlayAsync(first.Id);
+            Assert.That(active.keepWaiting, Is.True);
+            player.Play(second.Id);
+
+            Assert.That(active.keepWaiting, Is.False);
+            Assert.That(
+                active.PlaybackHandle.Result.Reason,
+                Is.EqualTo(FrameAnimationCompletionReason.Replaced));
+        }
+
         [Test]
         public void RestoreTerminalState_RebuildsSavedVisualState()
         {
@@ -154,16 +299,60 @@ namespace AibisDream.FrameAnimation.Tests.PlayMode
             gameObject.AddComponent<SpriteRenderer>();
             var player = gameObject.AddComponent<FrameAnimationPlayer>();
             player.ConfigureForAuthoring(CreateGraph(clip), false, 1f);
-            var handle = player.Play(clip.Id);
+            var awaitable = player.PlayAsync(clip.Id);
+            var handle = awaitable.PlaybackHandle;
 
             player.enabled = false;
             yield return null;
 
             Assert.That(handle.Result.Reason,
                 Is.EqualTo(FrameAnimationCompletionReason.Stopped));
+            Assert.That(awaitable.keepWaiting, Is.False);
             Assert.That(player.State, Is.EqualTo(FrameAnimationPlaybackState.Stopped));
         }
 
+        [Test]
+        public void PlayAsync_StopReleasesAwaitableAsStopped()
+        {
+            var clip = CreateClip(
+                "Loop",
+                FrameClipEndBehavior.Loop,
+                CreateSprite(Color.white));
+            var gameObject = Track(new GameObject("Stop Async Player"));
+            gameObject.AddComponent<SpriteRenderer>();
+            var player = gameObject.AddComponent<FrameAnimationPlayer>();
+            player.ConfigureForAuthoring(CreateGraph(clip), false, 1f);
+            var awaitable = player.PlayAsync(clip.Id);
+
+            player.Stop();
+
+            Assert.That(awaitable.keepWaiting, Is.False);
+            Assert.That(
+                awaitable.PlaybackHandle.Result.Reason,
+                Is.EqualTo(FrameAnimationCompletionReason.Stopped));
+        }
+
+        private FrameAnimationGraph CreateFlowGraph(
+            FrameClip intro,
+            FrameClip terminal,
+            AnimationFlowAsyncCompletionMode asyncCompletionMode)
+        {
+            var introNode = new AnimationNode(intro.Id);
+            var terminalNode = new AnimationNode(terminal.Id);
+            var flow = new AnimationFlow(
+                "Flow",
+                "Flow",
+                introNode.InternalId,
+                null,
+                asyncCompletionMode);
+            return CreateGraph(
+                new[] { intro, terminal },
+                new[] { introNode, terminalNode },
+                new[] { new AnimationEdge(introNode.InternalId, terminalNode.InternalId) },
+                new[] { flow },
+                flow.Id);
+        }
+
         private FrameClip CreateClip(
             string id,
             FrameClipEndBehavior endBehavior,
@@ -186,15 +375,30 @@ namespace AibisDream.FrameAnimation.Tests.PlayMode
 
         private FrameAnimationGraph CreateGraph(params FrameClip[] clips)
         {
-            var graph = Track(ScriptableObject.CreateInstance<FrameAnimationGraph>());
+            return CreateGraph(
-            graph.Configure(
-                "Graph",
-                "Graph",
                 clips,
                 Array.Empty<AnimationNode>(),
                 Array.Empty<AnimationEdge>(),
                 Array.Empty<AnimationFlow>(),
                 clips[0].Id);
+        }
+
+        private FrameAnimationGraph CreateGraph(
+            FrameClip[] clips,
+            AnimationNode[] nodes,
+            AnimationEdge[] edges,
+            AnimationFlow[] flows,
+            string defaultPlayableId)
+        {
+            var graph = Track(ScriptableObject.CreateInstance<FrameAnimationGraph>());
+            graph.Configure(
+                "Graph",
+                "Graph",
+                clips,
+                nodes,
+                edges,
+                flows,
+                defaultPlayableId);
             return graph;
         }
 

Docs/FrameAnimationActor接入说明.md

@@ -25,13 +25,13 @@ Graph 必须通过 `FrameAnimationGraphValidator` 校验。帧动画角色不会
 <<change_actor_state Idle 测试角色>>
 ```
 
-等待一次性动画播放完成，或等待 Loop playable 完成首轮：
+等待一次性动画播放完成，或按 Flow 配置等待 Loop：
 
 ```yarn
 <<change_actor_state_async Intro 测试角色>>
 ```
 
-`init_actor` 会等待 Prefab 和 Graph 加载完成，因此紧随其后的状态切换可以安全执行。`change_actor_state_async` 播放 Loop playable 时，会在直接 Loop Clip 完成第一轮后继续执行 Yarn；对于“前置节点 → 终点 Loop”的 Flow，则等待前置节点和终点 Loop 第一轮全部完成。命令返回后动画仍会继续循环，直到被新状态替换或主动停止。无需等待首轮时仍可使用 `change_actor_state` 立即继续 Yarn。
+`init_actor` 会等待 Prefab 和 Graph 加载完成，因此紧随其后的状态切换可以安全执行。直接异步播放 Loop Clip 时，完成第一轮后继续执行 Yarn。对于“前置节点 → 终点 Loop”的 Flow，等待时机由 Flow 的 **Async Completion** 决定：默认在前置节点结束、终点 Loop 首帧显示后继续；也可以配置为等待终点 Loop 完整播放第一轮。命令返回后动画仍会继续循环，直到被新状态替换或主动停止。完全无需等待时仍可使用 `change_actor_state` 立即继续 Yarn。
 
 ## 存档行为
 

Docs/动画系统需求整理.md

@@ -447,18 +447,21 @@ FrameAnimationGraphEditorData
 string id;
 string displayName;
 string entryNodeId;
+AnimationFlowAsyncCompletionMode asyncCompletionMode;
 FrameClipEndBehavior? endBehaviorOverride;
 ```
 
 说明：
 
 - `entryNodeId` 保存入口 AnimationNode 的 `internalId`。
+- `asyncCompletionMode` 只控制终点为 Loop 时的 `PlayAsync` 等待边界：进入终点并显示首帧，或等待终点首轮回绕；零值默认采用前者。
 - `endBehaviorOverride` 是 Flow 到达终点时的可选结束行为覆盖。
 - Flow 包含的节点集合从 `entryNodeId` 沿全局边关系遍历得到，不单独保存 `includedNodeIds`。
 - 编辑器高亮、Flow 聚焦、校验和运行时使用同一套可达关系，避免人工维护的节点集合与实际连线不一致。
 - 多个 Flow 的可达范围可以重叠，因此可以自然共享 Idle 等公共节点。
 - 同一个 AnimationNode 不能作为多个 Flow 的入口，但不同 Flow 可以在后续路径中共享该节点。
 - Flow id 属于统一可播放命名空间，不能与任何 Clip 或其他 Flow id 重名。
+- 终点为非 Loop 时忽略 `asyncCompletionMode`，异步播放始终等待 Flow 自然结束。
 
 #### 4.3.2 AnimationNode 数据
 
@@ -881,6 +884,7 @@ Flow 创建与入口管理：
 - Flow 只能通过“选中一个 Clip 节点 -> 从选中节点创建 Flow”建立。
 - 创建时必须且只能选中一个节点，编辑器自动将该节点写入 `entryNodeId`。
 - Flow id 默认取节点名称，但创建前允许修改；它必须与所有 Clip / Flow playable id 唯一。
+- Flow 属性区提供 `Async Completion` 配置，并说明它只影响终点为 Loop 的异步播放。
 - 同一个节点不能作为多个 Flow 的入口；节点已是入口时禁用创建命令并提供定位现有 Flow 的操作。
 - Flow 入口允许存在前驱节点；从该 Flow 播放时直接从入口开始，入口之前的节点不属于其可达范围。
 - 修改入口时，先选中目标节点并执行“设置为当前 Flow 入口”；若目标已是其他 Flow 入口则阻止修改。
@@ -1215,6 +1219,15 @@ FrameAnimationPlaybackHandle : CustomYieldInstruction
     void RegisterCompleted(Action<FrameAnimationPlaybackResult> callback);
 }
 
+FrameAnimationPlaybackAwaitable : CustomYieldInstruction
+{
+    FrameAnimationPlaybackHandle PlaybackHandle { get; }
+}
+
+FrameAnimationPlaybackAwaitable PlayAsync();
+FrameAnimationPlaybackAwaitable PlayAsync(string playableId);
+FrameAnimationPlaybackAwaitable PlayAsync(string playableId, FrameAnimationPlayOptions options);
+
 FrameAnimationPlaybackResult
 {
     long requestId;
@@ -1254,6 +1267,9 @@ FrameAnimationCompletionReason
 要求：
 
 - Handle 可以直接用于 `yield return handle`。
+- `PlayAsync()` 调用时立即开始播放，返回值可直接用于 `yield return`；其 `PlaybackHandle` 仍表示底层播放请求的完整生命周期。
+- 非循环 playable 的异步等待随播放自然结束。直接 Loop Clip 固定等待第一轮；终点为 Loop 的 Flow 按 `AnimationFlow.AsyncCompletionMode` 在终点 Loop 首帧显示后或第一轮回绕后解除等待。
+- Awaitable 解除等待不等于底层 Loop 播放完成；Loop 的 `PlaybackHandle` 继续保持未完成，直到被替换、停止、禁用或销毁。
 - `WaitAsync()` 使用标准 `Task`，项目第一版不引入 UniTask 依赖。
 - `RegisterCompleted()` 是正式完成通知接口。请求尚未完成时登记回调；请求已经完成时立即用既有结果调用，避免同步失败或极短动画造成通知丢失。
 - 同一个播放请求只能从未完成状态结算一次；协程、Task 和回调必须观察到同一个结果。

Docs/帧动画角色配置指南（策划版）.md

@@ -86,6 +86,15 @@ Flow ID 就是 Yarn 中填写的动画名。建议使用有明确含义且不易
 3. 点击顶部 **Validate**，底部 **Validation** 中不能有 Error。
 4. 点击顶部 **Save** 保存。
 
+### Flow 的异步完成配置
+
+选择 Flow 后，可以在右侧 **Animation Flow** 区域设置 **Async Completion**。该配置只在 Flow 的终点为 `Loop` 时生效：
+
+- `Complete On Terminal Loop Start`：默认值。所有前置节点播放完成并显示终点 Loop 第一帧后，异步调用继续执行；终点 Loop 在后台持续循环。
+- `Wait For Terminal Loop First Cycle`：等待前置节点和终点 Loop 第一轮全部播放完成后，异步调用继续执行。
+
+终点不是 `Loop` 时，两种配置行为相同，都会等待整条 Flow 自然结束。
+
 ## 4. Yarn 调用
 
 ### 初始化角色
@@ -163,17 +172,17 @@ hs: 戴上“实实”牌帽子，给你的头顶添件宝！
 
 Yarn 会立即继续对白，Flow 则在后台按照连线依次播放。适合整段表演与对白同时发生的情况。
 
-#### Flow：播放到终点首轮后再继续 Yarn
+#### Flow：按 Flow 配置等待后再继续 Yarn
 
 ```yarn
 <<change_actor_state_async 摘帽到伸手_Flow 火山>>
-// Flow 的前置动作和终点 Loop 首轮播放完后，才执行这里
+// 默认在前置动作结束、终点 Loop 首帧显示后执行这里
 ```
 
 `change_actor_state_async` 会从入口开始等待整条 Flow：
 
 - 终点为非循环 Clip：等待所有节点自然播放结束；
-- `前置动作 → 终点 Loop` 的 Flow：等待前置动作和终点 Loop 的第一轮全部结束。
+- `前置动作 → 终点 Loop` 的 Flow：根据 **Async Completion**，在终点 Loop 开始时完成，或等待其第一轮结束。
 
 如果终点是 `Loop`，命令返回后终点 Clip 仍会继续循环，直到被下一次状态切换替换。
 
@@ -184,7 +193,7 @@ Yarn 会立即继续对白，Flow 则在后台按照连线依次播放。适合
 | 单个 Clip | 不等待 | `<<change_actor_state ClipID 角色名>>` |
 | 单个 Clip | 等完整动画；Loop 等第一轮 | `<<change_actor_state_async ClipID 角色名>>` |
 | 一整条 Flow | 不等待 | `<<change_actor_state FlowID 角色名>>` |
-| 一整条 Flow | 等到终点首轮完成 | `<<change_actor_state_async FlowID 角色名>>` |
+| 一整条 Flow | 按 Flow 的 Async Completion 等待 | `<<change_actor_state_async FlowID 角色名>>` |
 
 命令本身不需要标明目标是 Clip 还是 Flow。系统会用 ID 在当前角色的 Graph 中查找；因此 Clip ID 和 Flow ID 不能重名。
 
@@ -212,7 +221,7 @@ Clip ID、Flow ID、角色名或槽位名中包含空格时，必须加英文双
 
 hs: 医——生——救——我——！
 
-// 调用 Flow：等“摘帽”播完，再等终点“伸手表情idle”完成第一轮
+// 调用 Flow：默认等“摘帽”播完，并显示终点“伸手表情idle”首帧
 <<change_actor_state_async 摘帽到伸手_Flow 火山>>
 
 // Flow 返回后，终点的伸手 idle 仍在循环
@@ -233,6 +242,7 @@ hs: 我……没有活干了。
 - 只有最后一个 Node 设置了结束行为吗？
 - 需要持续显示的 idle 是否设置为 `Loop`？
 - Flow ID 是否与已有 Clip / Flow 重名？
+- Flow 的 **Async Completion** 是否符合剧情节奏？
 - Yarn 中的 ID 与 Graph 完全一致，包括空格和大小写吗？
 - 需要等动画时是否用了 `change_actor_state_async`？
 - 顶部 **Validate** 是否无 Error？
@@ -254,7 +264,7 @@ Yarn 中传入的是 Clip ID 或 Flow ID，不是资源文件名、Graph 名或
 
 **循环动画导致剧情无法继续**
 
-使用 `change_actor_state_async` 等待 Loop 时，只会等待第一轮，不会无限阻塞。如果仍未继续，先运行 **Validate** 检查 Flow 路径和结尾配置。
+直接异步播放 Loop Clip 时只等待第一轮。异步播放 Flow 时，默认进入终点 Loop 即继续，也可以通过 **Async Completion** 配置为等待终点 Loop 第一轮。如果仍未继续，先检查是否还停在前置节点、有效速度是否为 0，并运行 **Validate** 检查 Flow 路径和结尾配置。
 
 **想让 Flow 中途停住**