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Plugins/GCS/Source/GenericGameplayAbilities/Public/Attributes/GGA_AttributeSet.h

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+// Copyright 2025 https://yuewu.dev/en  All Rights Reserved.
+
+#pragma once
+
+#include "CoreMinimal.h"
+#include "AttributeSet.h"
+#include "AbilitySystemComponent.h"
+#include "GGA_AttributeSet.generated.h"
+
+
+class UGGA_AbilitySystemComponent;
+struct FGameplayEffectSpec;
+
+/**
+ * This macro defines a set of helper functions for accessing and initializing attributes.
+ *
+ * The following example of the macro:
+ *		ATTRIBUTE_ACCESSORS(ULyraHealthSet, Health)
+ * will create the following functions:
+ *		static FGameplayAttribute GetHealthAttribute();
+ *		float GetHealth() const;
+ *		void SetHealth(float NewVal);
+ *		void InitHealth(float NewVal);
+ */
+#define ATTRIBUTE_ACCESSORS(ClassName, PropertyName) \
+GAMEPLAYATTRIBUTE_PROPERTY_GETTER(ClassName, PropertyName) \
+GAMEPLAYATTRIBUTE_VALUE_GETTER(PropertyName) \
+GAMEPLAYATTRIBUTE_VALUE_SETTER(PropertyName) \
+GAMEPLAYATTRIBUTE_VALUE_INITTER(PropertyName)
+
+/** 
+ * Delegate used to broadcast attribute events, some of these parameters may be null on clients: 
+ * @param EffectInstigator	The original instigating actor for this event
+ * @param EffectCauser		The physical actor that caused the change
+ * @param EffectSpec		The full effect spec for this change
+ * @param EffectMagnitude	The raw magnitude, this is before clamping
+ * @param OldValue			The value of the attribute before it was changed
+ * @param NewValue			The value after it was changed
+*/
+DECLARE_MULTICAST_DELEGATE_SixParams(FGGA_AttributeEvent, AActor* /*EffectInstigator*/, AActor* /*EffectCauser*/, const FGameplayEffectSpec* /*EffectSpec*/, float /*EffectMagnitude*/,
+                                     float /*OldValue*/, float /*NewValue*/);
+
+
+// typedef is specific to the FGameplayAttribute() signature, but TStaticFunPtr is generic to any signature chosen
+//typedef TBaseStaticDelegateInstance<FGameplayAttribute(), FDefaultDelegateUserPolicy>::FFuncPtr FAttributeFuncPtr;
+template <class T>
+using TStaticFuncPtr = typename TBaseStaticDelegateInstance<T, FDefaultDelegateUserPolicy>::FFuncPtr;
+
+/**
+ * UGGA_AttributeSet
+ *
+ *	Base attribute set class for the project.
+ */
+UCLASS()
+class GENERICGAMEPLAYABILITIES_API UGGA_AttributeSet : public UAttributeSet
+{
+	GENERATED_BODY()
+
+public:
+	UGGA_AttributeSet();
+
+	UWorld* GetWorld() const override;
+
+	UGGA_AbilitySystemComponent* GetGGA_AbilitySystemComponent() const;
+};