begin posture with animation

Unreal/PS_AI_Agent/Plugins/PS_AI_Agent_ElevenLabs/Source/PS_AI_Agent_ElevenLabs/Private/AnimNode_ElevenLabsPosture.cpp

@@ -224,40 +224,14 @@ void FAnimNode_ElevenLabsPosture::Evaluate_AnyThread(FPoseContext& Output)
 
 	if (bUseChain)
 	{
-		// ── Multi-bone neck chain: distribute rotation across bones ──────
+		// ── Multi-bone neck chain: per-bone swing-twist ──────────────────
 		//
-		// 1. Clean the total rotation ONCE via swing-twist on the tip bone
-		//    (removes parasitic ear-to-shoulder tilt).
-		// 2. Slerp a fraction to each bone in the chain.
+		// Each bone in the chain gets a fractional rotation (via Slerp weight).
+		// The swing-twist decomposition is done PER-BONE using each bone's own
+		// tilt axis.  This prevents parasitic ear-to-shoulder tilt that occurred
+		// when a single CleanRotation (derived from the tip bone) was applied
+		// to bones with different local orientations.
 
-		// Find the tip bone (last valid bone) for swing-twist reference
-		FCompactPoseBoneIndex TipBoneIdx(INDEX_NONE);
-		for (int32 i = ChainBoneIndices.Num() - 1; i >= 0; --i)
-		{
-			if (ChainBoneIndices[i].GetInt() != INDEX_NONE
-				&& ChainBoneIndices[i].GetInt() < Output.Pose.GetNumBones())
-			{
-				TipBoneIdx = ChainBoneIndices[i];
-				break;
-			}
-		}
-
-		if (TipBoneIdx.GetInt() == INDEX_NONE)
-		{
-			return; // No valid bones in chain
-		}
-
-		// Swing-twist: remove tilt from the composed rotation
-		const FQuat TipBoneRot = Output.Pose[TipBoneIdx].GetRotation();
-		const FQuat Combined = CachedHeadRotation * TipBoneRot;
-		const FVector BoneTiltAxis = TipBoneRot.RotateVector(FVector::RightVector);
-		FQuat Swing, TiltTwist;
-		Combined.ToSwingTwist(BoneTiltAxis, Swing, TiltTwist);
-
-		// Extract clean offset = Swing * Inverse(TipBoneRot)
-		const FQuat CleanRotation = (Swing * TipBoneRot.Inverse()).GetNormalized();
-
-		// Distribute fractional rotation to each bone
 		for (int32 i = 0; i < ChainBoneIndices.Num(); ++i)
 		{
 			const FCompactPoseBoneIndex BoneIdx = ChainBoneIndices[i];
@@ -267,10 +241,21 @@ void FAnimNode_ElevenLabsPosture::Evaluate_AnyThread(FPoseContext& Output)
 				continue;
 			}
 
-			const FQuat FractionalRot = FQuat::Slerp(FQuat::Identity, CleanRotation, ChainBoneWeights[i]);
+			// Fractional rotation for this bone
+			const FQuat FractionalRot = FQuat::Slerp(
+				FQuat::Identity, CachedHeadRotation, ChainBoneWeights[i]);
+
+			// Compose with THIS bone's own rotation
 			FTransform& BoneTransform = Output.Pose[BoneIdx];
-			BoneTransform.SetRotation(
-				(FractionalRot * BoneTransform.GetRotation()).GetNormalized());
+			const FQuat BoneRot = BoneTransform.GetRotation();
+			const FQuat Combined = FractionalRot * BoneRot;
+
+			// Swing-twist on THIS bone's tilt axis (removes roll/tilt)
+			const FVector BoneTiltAxis = BoneRot.RotateVector(FVector::RightVector);
+			FQuat Swing, TiltTwist;
+			Combined.ToSwingTwist(BoneTiltAxis, Swing, TiltTwist);
+
+			BoneTransform.SetRotation(Swing.GetNormalized());
 		}
 	}
 	else

Unreal/PS_AI_Agent/Plugins/PS_AI_Agent_ElevenLabs/Source/PS_AI_Agent_ElevenLabs/Private/ElevenLabsPostureComponent.cpp

@@ -34,6 +34,11 @@ UElevenLabsPostureComponent::UElevenLabsPostureComponent()
 	PrimaryComponentTick.bCanEverTick = true;
 	PrimaryComponentTick.TickGroup = TG_PrePhysics;
 	bAutoActivate = true;
+
+	// Default neck bone chain for MetaHuman (neck_01 → neck_02 → head)
+	NeckBoneChain.Add({ FName(TEXT("neck_01")), 0.25f });
+	NeckBoneChain.Add({ FName(TEXT("neck_02")), 0.35f });
+	NeckBoneChain.Add({ FName(TEXT("head")),    0.40f });
 }
 
 // ─────────────────────────────────────────────────────────────────────────────

Unreal/PS_AI_Agent/Plugins/PS_AI_Agent_ElevenLabs/Source/PS_AI_Agent_ElevenLabs/Public/ElevenLabsPostureComponent.h

@@ -77,7 +77,7 @@ public:
 	 *  Useful for actors without a skeleton (e.g. (0,0,160) for eye-level). */
 	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "ElevenLabs|Posture",
 		meta = (ToolTip = "Offset from target actor origin.\nE.g. (0,0,160) for eye-level."))
-	FVector TargetOffset = FVector(0.0f, 0.0f, 160.0f);
+	FVector TargetOffset = FVector(0.0f, 0.0f, 0.0f);
 
 	// ── Angle limits (degrees) ───────────────────────────────────────────────
 	//
@@ -91,45 +91,55 @@ public:
 	/** Maximum head yaw rotation in degrees. */
 	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "ElevenLabs|Posture",
 		meta = (ClampMin = "0", ClampMax = "90"))
-	float MaxHeadYaw = 35.0f;
+	float MaxHeadYaw = 40.0f;
 
 	/** Maximum head pitch rotation in degrees. */
 	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "ElevenLabs|Posture",
 		meta = (ClampMin = "0", ClampMax = "90"))
-	float MaxHeadPitch = 25.0f;
+	float MaxHeadPitch = 30.0f;
 
 	/** Maximum horizontal eye angle in degrees. */
 	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "ElevenLabs|Posture",
 		meta = (ClampMin = "0", ClampMax = "90"))
-	float MaxEyeHorizontal = 30.0f;
+	float MaxEyeHorizontal = 15.0f;
 
 	/** Maximum vertical eye angle in degrees. */
 	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "ElevenLabs|Posture",
 		meta = (ClampMin = "0", ClampMax = "90"))
-	float MaxEyeVertical = 20.0f;
+	float MaxEyeVertical = 10.0f;
 
 	// ── Smoothing speeds ─────────────────────────────────────────────────────
 
 	/** Body rotation interpolation speed (lower = slower, more natural). */
 	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "ElevenLabs|Posture",
 		meta = (ClampMin = "0.1", ClampMax = "20"))
-	float BodyInterpSpeed = 2.0f;
+	float BodyInterpSpeed = 4.0f;
 
 	/** Head rotation interpolation speed. */
 	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "ElevenLabs|Posture",
 		meta = (ClampMin = "0.1", ClampMax = "20"))
-	float HeadInterpSpeed = 5.0f;
+	float HeadInterpSpeed = 4.0f;
 
 	/** Eye movement interpolation speed (higher = snappier). */
 	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "ElevenLabs|Posture",
 		meta = (ClampMin = "0.1", ClampMax = "20"))
-	float EyeInterpSpeed = 8.0f;
+	float EyeInterpSpeed = 5.0f;
 
 	/** Interpolation speed when returning to neutral (TargetActor is null). */
 	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "ElevenLabs|Posture",
 		meta = (ClampMin = "0.1", ClampMax = "20"))
 	float ReturnToNeutralSpeed = 3.0f;
 
+	// ── Animation compensation ──────────────────────────────────────────────
+
+	/** How much the look-at overrides the animation's head rotation.
+	 *  1.0 = full override — head always points at target regardless of animation.
+	 *  0.0 = pure additive — posture stacks on top of animation (old behavior).
+	 *  Default: 1.0 for conversational AI (always look at who you talk to). */
+	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "ElevenLabs|Posture",
+		meta = (ClampMin = "0", ClampMax = "1"))
+	float AnimationCompensation = 1.0f;
+
 	// ── Forward offset ──────────────────────────────────────────────────────
 
 	/** Yaw offset (degrees) between the actor's forward (+X) and the mesh's
@@ -139,7 +149,7 @@ public:
 	 *  -90 = mesh faces -Y  */
 	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "ElevenLabs|Posture",
 		meta = (ClampMin = "-180", ClampMax = "180"))
-	float MeshForwardYawOffset = 0.0f;
+	float MeshForwardYawOffset = 90.0f;
 
 	// ── Head bone ────────────────────────────────────────────────────────────