第一次提交

Plugins/GMS/Source/GenericMovementSystem/Private/Nodes/GMS_AnimNode_CurvesBlend.cpp

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+// Copyright 2025 https://yuewu.dev/en  All Rights Reserved.
+
+
+#include "Nodes/GMS_AnimNode_CurvesBlend.h"
+
+#include "Animation/AnimTrace.h"
+
+#include UE_INLINE_GENERATED_CPP_BY_NAME(GMS_AnimNode_CurvesBlend)
+
+void FGMS_AnimNode_CurvesBlend::Initialize_AnyThread(const FAnimationInitializeContext& Context)
+{
+	DECLARE_SCOPE_HIERARCHICAL_COUNTER_FUNC()
+
+	Super::Initialize_AnyThread(Context);
+
+	SourcePose.Initialize(Context);
+	CurvesPose.Initialize(Context);
+}
+
+void FGMS_AnimNode_CurvesBlend::CacheBones_AnyThread(const FAnimationCacheBonesContext& Context)
+{
+	DECLARE_SCOPE_HIERARCHICAL_COUNTER_FUNC()
+
+	Super::CacheBones_AnyThread(Context);
+
+	SourcePose.CacheBones(Context);
+	CurvesPose.CacheBones(Context);
+}
+
+void FGMS_AnimNode_CurvesBlend::Update_AnyThread(const FAnimationUpdateContext& Context)
+{
+	DECLARE_SCOPE_HIERARCHICAL_COUNTER_FUNC()
+
+	Super::Update_AnyThread(Context);
+
+	GetEvaluateGraphExposedInputs().Execute(Context);
+
+	SourcePose.Update(Context);
+
+	const auto CurrentBlendAmount{GetBlendAmount()};
+	if (FAnimWeight::IsRelevant(CurrentBlendAmount))
+	{
+		CurvesPose.Update(Context);
+	}
+
+	TRACE_ANIM_NODE_VALUE(Context, TEXT("Blend Amount"), CurrentBlendAmount);
+
+	TRACE_ANIM_NODE_VALUE(Context, TEXT("Blend Mode"), *StaticEnum<EGMS_CurvesBlendMode>()->GetNameStringByValue(static_cast<int64>(GetBlendMode())));
+}
+
+void FGMS_AnimNode_CurvesBlend::Evaluate_AnyThread(FPoseContext& Output)
+{
+	DECLARE_SCOPE_HIERARCHICAL_COUNTER_FUNC()
+	ANIM_MT_SCOPE_CYCLE_COUNTER_VERBOSE(CurvesBlend, !IsInGameThread());
+
+	Super::Evaluate_AnyThread(Output);
+
+	SourcePose.Evaluate(Output);
+
+	const auto CurrentBlendAmount{GetBlendAmount()};
+	if (!FAnimWeight::IsRelevant(CurrentBlendAmount))
+	{
+		return;
+	}
+
+	auto CurvesPoseContext{Output};
+	CurvesPose.Evaluate(CurvesPoseContext);
+
+	switch (GetBlendMode())
+	{
+	case EGMS_CurvesBlendMode::BlendByAmount:
+		Output.Curve.Accumulate(CurvesPoseContext.Curve, CurrentBlendAmount);
+		break;
+
+	case EGMS_CurvesBlendMode::Combine:
+		Output.Curve.Combine(CurvesPoseContext.Curve);
+		break;
+
+	case EGMS_CurvesBlendMode::CombinePreserved:
+		Output.Curve.CombinePreserved(CurvesPoseContext.Curve);
+		break;
+
+	case EGMS_CurvesBlendMode::UseMaxValue:
+		Output.Curve.UseMaxValue(CurvesPoseContext.Curve);
+		break;
+
+	case EGMS_CurvesBlendMode::UseMinValue:
+		Output.Curve.UseMinValue(CurvesPoseContext.Curve);
+		break;
+
+	case EGMS_CurvesBlendMode::Override:
+		Output.Curve.Override(CurvesPoseContext.Curve);
+		break;
+	}
+}
+
+void FGMS_AnimNode_CurvesBlend::GatherDebugData(FNodeDebugData& DebugData)
+{
+	DECLARE_SCOPE_HIERARCHICAL_COUNTER_ANIMNODE(GatherDebugData)
+
+	TStringBuilder<256> DebugItemBuilder{InPlace, DebugData.GetNodeName(this), TEXTVIEW(": Blend Amount: ")};
+
+	DebugItemBuilder.Appendf(TEXT("%.2f"), GetBlendAmount());
+
+	DebugData.AddDebugItem(FString{DebugItemBuilder});
+	SourcePose.GatherDebugData(DebugData.BranchFlow(1.0f));
+	CurvesPose.GatherDebugData(DebugData.BranchFlow(GetBlendAmount()));
+}
+
+float FGMS_AnimNode_CurvesBlend::GetBlendAmount() const
+{
+	return GET_ANIM_NODE_DATA(float, BlendAmount);
+}
+
+EGMS_CurvesBlendMode FGMS_AnimNode_CurvesBlend::GetBlendMode() const
+{
+	return GET_ANIM_NODE_DATA(EGMS_CurvesBlendMode, BlendMode);
+}