// 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;
};