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不明不惑
2026-03-03 01:23:02 +08:00
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Plugins/GCS/Source/GenericGameplayAbilities/Private/AsyncTasks/GGA_AsyncTask_AttributeChanged.cpp Normal file
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// Copyright 2025 https://yuewu.dev/en All Rights Reserved.
#include "AsyncTasks/GGA_AsyncTask_AttributeChanged.h"
UGGA_AsyncTask_AttributeChanged* UGGA_AsyncTask_AttributeChanged::ListenForAttributeChange(UAbilitySystemComponent* AbilitySystemComponent, FGameplayAttribute Attribute)
{
if (!IsValid(AbilitySystemComponent) || !Attribute.IsValid())
{
return nullptr;
}
UGGA_AsyncTask_AttributeChanged* WaitForAttributeChangedTask = NewObject<UGGA_AsyncTask_AttributeChanged>();
WaitForAttributeChangedTask->SetAbilityActor(AbilitySystemComponent->GetAvatarActor());
WaitForAttributeChangedTask->AttributeToListenFor = Attribute;
return WaitForAttributeChangedTask;
}
UGGA_AsyncTask_AttributeChanged* UGGA_AsyncTask_AttributeChanged::ListenForAttributesChange(UAbilitySystemComponent* AbilitySystemComponent, TArray<FGameplayAttribute> Attributes)
{
if (!IsValid(AbilitySystemComponent) || Attributes.IsEmpty())
{
return nullptr;
}
UGGA_AsyncTask_AttributeChanged* WaitForAttributeChangedTask = NewObject<UGGA_AsyncTask_AttributeChanged>();
WaitForAttributeChangedTask->SetAbilityActor(AbilitySystemComponent->GetAvatarActor());
WaitForAttributeChangedTask->AttributesToListenFor = Attributes;
return WaitForAttributeChangedTask;
}
void UGGA_AsyncTask_AttributeChanged::EndTask()
{
EndAction();
}
void UGGA_AsyncTask_AttributeChanged::Activate()
{
Super::Activate();
if (UAbilitySystemComponent* ASC = GetAbilitySystemComponent())
{
if (AttributeToListenFor.IsValid())
{
ASC->GetGameplayAttributeValueChangeDelegate(AttributeToListenFor).AddUObject(this, &ThisClass::AttributeChanged);
}
for (const FGameplayAttribute& Attribute : AttributesToListenFor)
{
if (Attribute.IsValid())
{
ASC->GetGameplayAttributeValueChangeDelegate(Attribute).AddUObject(this, &ThisClass::AttributeChanged);
}
}
}
else
{
EndAction();
}
}
void UGGA_AsyncTask_AttributeChanged::EndAction()
{
if (UAbilitySystemComponent* ASC = GetAbilitySystemComponent())
{
if (AttributeToListenFor.IsValid())
{
ASC->GetGameplayAttributeValueChangeDelegate(AttributeToListenFor).RemoveAll(this);
}
for (FGameplayAttribute Attribute : AttributesToListenFor)
{
if (AttributeToListenFor.IsValid())
{
ASC->GetGameplayAttributeValueChangeDelegate(Attribute).RemoveAll(this);
}
}
}
Super::EndAction();
}
void UGGA_AsyncTask_AttributeChanged::AttributeChanged(const FOnAttributeChangeData& Data)
{
OnAttributeChanged.Broadcast(Data.Attribute, Data.NewValue, Data.OldValue);
}