第一次提交

Plugins/GCS/Source/GenericGameplayAttributes/Private/GGA_AttributeSystemComponent.cpp

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+// Copyright 2025 https://yuewu.dev/en  All Rights Reserved.
+
+
+#include "GGA_AttributeSystemComponent.h"
+
+#include "AbilitySystemComponent.h"
+#include "GameplayEffect.h"
+#include "GameplayEffectExtension.h"
+#include "GameplayEffectTypes.h"
+
+DEFINE_LOG_CATEGORY_STATIC(LogGGA_AttributeSystem, Log, All);
+
+// Sets default values for this component's properties
+UGGA_AttributeSystemComponent::UGGA_AttributeSystemComponent()
+{
+	// Set this component to be initialized when the game starts, and to be ticked every frame.  You can turn these features
+	// off to improve performance if you don't need them.
+	PrimaryComponentTick.bCanEverTick = false;
+
+	// ...
+}
+
+
+bool UGGA_AttributeSystemComponent::ReceivePreGameplayEffectExecute(UAttributeSet* AttributeSet, FGameplayEffectModCallbackData& Data)
+{
+	return true;
+}
+
+void UGGA_AttributeSystemComponent::ReceivePostGameplayEffectExecute(UAttributeSet* AttributeSet, const FGameplayEffectModCallbackData& Data)
+{
+	if (!AttributeSet)
+	{
+		UE_LOG(LogGGA_AttributeSystem, Error, TEXT("Owner AttributeSet isn't valid"));
+		return;
+	}
+
+	FGameplayEffectContextHandle ContextHandle = Data.EffectSpec.GetContext();
+
+	FGGA_GameplayEffectModCallbackData Payload;
+	Payload.AttributeSet = AttributeSet;
+	Payload.EvaluatedData = Data.EvaluatedData;
+
+	for (const FGameplayEffectModifiedAttribute& ModifiedAttribute : Data.EffectSpec.ModifiedAttributes)
+	{
+		FGGA_ModifiedAttribute ModAttribute;
+		ModAttribute.Attribute = ModifiedAttribute.Attribute;
+		ModAttribute.TotalMagnitude = ModifiedAttribute.TotalMagnitude;
+		Payload.ModifiedAttributes.Add(ModAttribute);
+	}
+
+	Payload.SetByCallerNameMagnitudes = Data.EffectSpec.SetByCallerNameMagnitudes;
+	Payload.SetByCallerTagMagnitudes = Data.EffectSpec.SetByCallerTagMagnitudes;
+
+	Payload.ContextHandle = ContextHandle;
+	Payload.InstigatorActor = Data.EffectSpec.GetContext().GetInstigator();
+
+	Payload.TargetActor = Data.Target.AbilityActorInfo->AvatarActor.Get();;
+	Payload.TargetAsc = &Data.Target;
+
+	Payload.AggregatedSourceTags = *Data.EffectSpec.CapturedSourceTags.GetAggregatedTags();
+	Payload.AggregatedTargetTags = *Data.EffectSpec.CapturedTargetTags.GetAggregatedTags();
+	OnPostGameplayEffectExecute.Broadcast(Payload);
+	HandlePostGameplayEffectExecute(Payload);
+}
+
+void UGGA_AttributeSystemComponent::ReceivePreAttributeChange(UAttributeSet* AttributeSet, const FGameplayAttribute& Attribute, float& NewValue)
+{
+	NewValue = HandlePreAttributeChange(AttributeSet, Attribute, NewValue);
+}
+
+void UGGA_AttributeSystemComponent::ReceivePostAttributeChange(UAttributeSet* AttributeSet, const FGameplayAttribute& Attribute, float OldValue, float NewValue)
+{
+	HandlePostAttributeChange(AttributeSet, Attribute, OldValue, NewValue);
+	OnPostAttributeChange.Broadcast(AttributeSet, Attribute, OldValue, NewValue);
+}
+
+void UGGA_AttributeSystemComponent::ReceiveAttributeChange(UAttributeSet* AttributeSet, const FGameplayAttribute& Attribute, const float& NewValue, const float& OldValue)
+{
+	HandleAttributeChange(AttributeSet, Attribute, NewValue, OldValue);
+	OnAttributeChanged.Broadcast(AttributeSet, Attribute, NewValue, OldValue);
+}
+
+float UGGA_AttributeSystemComponent::HandlePreAttributeChange_Implementation(UAttributeSet* AttributeSet, const FGameplayAttribute& Attribute, float NewValue)
+{
+	return NewValue;
+}
+
+void UGGA_AttributeSystemComponent::HandlePostAttributeChange_Implementation(UAttributeSet* AttributeSet, const FGameplayAttribute& Attribute, float OldValue, float NewValue)
+{
+}
+
+void UGGA_AttributeSystemComponent::HandlePostGameplayEffectExecute_Implementation(const FGGA_GameplayEffectModCallbackData& Payload)
+{
+}
+
+void UGGA_AttributeSystemComponent::HandleAttributeChange_Implementation(UAttributeSet* AttributeSet, const FGameplayAttribute& Attribute, const float& NewValue, const float& OldValue)
+{
+}
+
+// Called when the game starts
+void UGGA_AttributeSystemComponent::BeginPlay()
+{
+	Super::BeginPlay();
+
+	// ...
+}