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// Copyright 2025 https://yuewu.dev/en All Rights Reserved.
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#include "Interaction/GGS_InteractionSystemComponent.h"
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#include "Engine/World.h"
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#include "GameplayBehaviorSmartObjectBehaviorDefinition.h"
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#include "GGS_LogChannels.h"
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#include "SmartObjectComponent.h"
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#include "SmartObjectSubsystem.h"
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#include "Interaction/GGS_InteractableInterface.h"
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#include "Interaction/GGS_SmartObjectFunctionLibrary.h"
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#include "Interaction/GGS_InteractionStructLibrary.h"
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#include "Net/UnrealNetwork.h"
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#include "Net/Core/PushModel/PushModel.h"
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// Sets default values for this component's properties
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UGGS_InteractionSystemComponent::UGGS_InteractionSystemComponent()
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{
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PrimaryComponentTick.bCanEverTick = false;
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SetIsReplicatedByDefault(true);
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}
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void UGGS_InteractionSystemComponent::GetLifetimeReplicatedProps(TArray<class FLifetimeProperty>& OutLifetimeProps) const
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{
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Super::GetLifetimeReplicatedProps(OutLifetimeProps);
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FDoRepLifetimeParams Params;
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Params.bIsPushBased = true;
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Params.Condition = COND_OwnerOnly;
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DOREPLIFETIME_WITH_PARAMS_FAST(ThisClass, InteractableActor, Params);
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DOREPLIFETIME_WITH_PARAMS_FAST(ThisClass, NumsOfInteractableActors, Params);
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DOREPLIFETIME_WITH_PARAMS_FAST(ThisClass, InteractingOption, Params);
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DOREPLIFETIME_WITH_PARAMS_FAST(ThisClass, InteractionOptions, Params);
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}
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UGGS_InteractionSystemComponent* UGGS_InteractionSystemComponent::GetInteractionSystemComponent(const AActor* Actor)
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{
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return IsValid(Actor) ? Actor->FindComponentByClass<UGGS_InteractionSystemComponent>() : nullptr;
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}
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void UGGS_InteractionSystemComponent::CycleInteractableActors_Implementation(bool bNext)
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{
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if (bInteracting || InteractableActors.Num() <= 1)
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{
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return;
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}
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int32 Index = InteractableActor != nullptr ? InteractableActors.IndexOfByKey(InteractableActor) : 0;
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if (!InteractableActors.IsValidIndex(Index)) //一个都没
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{
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return;
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}
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if (bNext)
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{
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Index = FMath::Clamp(Index + 1, 0, InteractableActors.Num());
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}
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else
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{
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Index = FMath::Clamp(Index - 1, 0, InteractableActors.Num());
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}
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if (InteractableActors.IsValidIndex(Index) && InteractableActors[Index] != nullptr && InteractableActors[Index] !=
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InteractableActor)
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{
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SetInteractableActor(InteractableActors[Index]);
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}
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}
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void UGGS_InteractionSystemComponent::SearchInteractableActors()
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{
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OnSearchInteractableActorsEvent.Broadcast();
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}
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void UGGS_InteractionSystemComponent::SetInteractableActors(TArray<AActor*> NewActors)
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{
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if (!GetOwner()->HasAuthority())
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{
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return;
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}
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InteractableActors = NewActors;
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SetInteractableActorsNum(InteractableActors.Num());
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OnInteractableActorsChanged();
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}
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void UGGS_InteractionSystemComponent::SetInteractableActorsNum(int32 NewNum)
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{
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if (NewNum != NumsOfInteractableActors)
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{
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const int32 PrevNum = NumsOfInteractableActors;
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NumsOfInteractableActors = NewNum;
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MARK_PROPERTY_DIRTY_FROM_NAME(ThisClass, NumsOfInteractableActors, this)
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OnInteractableActorsNumChanged();
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}
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}
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void UGGS_InteractionSystemComponent::SetInteractableActor(AActor* InActor)
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{
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if (InActor != InteractableActor)
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{
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AActor* OldActor = InteractableActor;
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InteractableActor = InActor;
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MARK_PROPERTY_DIRTY_FROM_NAME(ThisClass, InteractableActor, this)
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OnInteractableActorChanged(OldActor);
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}
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}
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FSmartObjectRequestFilter UGGS_InteractionSystemComponent::GetSmartObjectRequestFilter_Implementation()
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{
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return DefaultRequestFilter;
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}
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void UGGS_InteractionSystemComponent::StartInteraction(int32 NewIndex)
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{
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if (bInteracting)
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{
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GGS_CLOG(Warning, "Can't start interaction(%d) while already interacting(%d)", NewIndex, InteractingOption)
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return;
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}
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if (!InteractionOptions.IsValidIndex(NewIndex))
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{
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GGS_CLOG(Warning, "Try start invalid interaction(%d)", NewIndex)
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return;
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}
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int32 Prev = InteractingOption;
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InteractingOption = NewIndex;
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MARK_PROPERTY_DIRTY_FROM_NAME(ThisClass, InteractingOption, this);
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OnInteractingOptionChanged(Prev);
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}
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void UGGS_InteractionSystemComponent::EndInteraction()
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{
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if (!bInteracting)
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{
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//GGS_CLOG(Warning, TEXT("no need to end interaction when there's no any active interaction."))
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return;
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}
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int32 Prev = InteractingOption;
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InteractingOption = INDEX_NONE;
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MARK_PROPERTY_DIRTY_FROM_NAME(ThisClass, InteractingOption, this);
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OnInteractingOptionChanged(Prev);
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}
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void UGGS_InteractionSystemComponent::InstantInteraction(int32 NewIndex)
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{
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if (bInteracting)
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{
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GGS_CLOG(Warning, "Can't trigger instant interaction(%d) while already interacting(%d)", NewIndex, InteractingOption)
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return;
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}
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if (!InteractionOptions.IsValidIndex(NewIndex))
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{
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GGS_CLOG(Warning, "Try trigger invalid interaction(%d)", NewIndex)
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return;
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}
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int32 Prev = InteractingOption;
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InteractingOption = NewIndex;
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MARK_PROPERTY_DIRTY_FROM_NAME(ThisClass, InteractingOption, this);
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OnInteractingOptionChanged(Prev);
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int32 Prev2 = InteractingOption;
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InteractingOption = INDEX_NONE;
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MARK_PROPERTY_DIRTY_FROM_NAME(ThisClass, InteractingOption, this);
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OnInteractingOptionChanged(Prev2);
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}
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bool UGGS_InteractionSystemComponent::IsInteracting() const
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{
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return bInteracting;
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}
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int32 UGGS_InteractionSystemComponent::GetInteractingOption() const
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{
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return InteractingOption;
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}
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void UGGS_InteractionSystemComponent::OnInteractableActorChanged(AActor* OldActor)
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{
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if (GetOwner()->GetLocalRole() >= ROLE_Authority)
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{
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RefreshOptionsForActor();
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}
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if (IsValid(OldActor) && OldActor->GetClass()->ImplementsInterface(UGGS_InteractableInterface::StaticClass()))
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{
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IGGS_InteractableInterface::Execute_OnInteractionDeselected(OldActor, GetOwner());
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}
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if (IsValid(InteractableActor) && InteractableActor->GetClass()->ImplementsInterface(UGGS_InteractableInterface::StaticClass()))
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{
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IGGS_InteractableInterface::Execute_OnInteractionSelected(InteractableActor, GetOwner());
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}
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OnInteractableActorChangedEvent.Broadcast(OldActor, InteractableActor);
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}
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void UGGS_InteractionSystemComponent::OnInteractableActorsNumChanged()
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{
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OnInteractableActorNumChangedEvent.Broadcast(NumsOfInteractableActors);
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}
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void UGGS_InteractionSystemComponent::OnInteractableActorsChanged_Implementation()
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{
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if (!bInteracting)
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{
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// update potential actor.
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if (!IsValid(InteractableActor) || !InteractableActors.Contains(InteractableActor))
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{
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if (InteractableActors.IsValidIndex(0) && IsValid(InteractableActors[0]))
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{
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SetInteractableActor(InteractableActors[0]);
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}
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else
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{
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SetInteractableActor(nullptr);
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}
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}
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if (bNewActorHasPriority)
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{
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if (IsValid(InteractableActor) && InteractableActors.IsValidIndex(0) && InteractableActors[0] != InteractableActor)
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{
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SetInteractableActor(InteractableActors[0]);
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}
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}
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}
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}
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void UGGS_InteractionSystemComponent::OnSmartObjectEventCallback(const FSmartObjectEventData& EventData)
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{
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check(InteractableActor != nullptr);
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for (int32 i = 0; i < InteractionOptions.Num(); i++)
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{
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const FGGS_InteractionOption& Option = InteractionOptions[i];
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if (EventData.SmartObjectHandle == Option.RequestResult.SmartObjectHandle && EventData.SlotHandle == Option.RequestResult.SlotHandle)
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{
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if (EventData.Reason == ESmartObjectChangeReason::OnOccupied || EventData.Reason == ESmartObjectChangeReason::OnReleased || EventData.Reason == ESmartObjectChangeReason::OnClaimed)
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{
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RefreshOptionsForActor();
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}
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}
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}
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}
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void UGGS_InteractionSystemComponent::OnInteractionOptionsChanged()
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{
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for (FGGS_InteractionOption& InteractionOption : InteractionOptions)
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{
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GGS_CLOG(Verbose, "Available Options:%s", *InteractionOption.ToString())
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}
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OnInteractionOptionsChangedEvent.Broadcast();
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}
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void UGGS_InteractionSystemComponent::OnInteractingOptionChanged_Implementation(int32 PrevOptionIndex)
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{
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bool bPrevInteracting = bInteracting;
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bInteracting = InteractingOption != INDEX_NONE;
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if (IsValid(InteractableActor) && InteractableActor->GetClass()->ImplementsInterface(UGGS_InteractableInterface::StaticClass()))
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{
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if (!bPrevInteracting && bInteracting)
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{
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IGGS_InteractableInterface::Execute_OnInteractionStarted(InteractableActor, GetOwner(), InteractingOption);
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}
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if (bPrevInteracting && !bInteracting)
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{
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IGGS_InteractableInterface::Execute_OnInteractionEnded(InteractableActor, GetOwner(), PrevOptionIndex);
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}
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}
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OnInteractingStateChangedEvent.Broadcast(bInteracting);
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}
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void UGGS_InteractionSystemComponent::RefreshOptionsForActor()
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{
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USmartObjectSubsystem* Subsystem = USmartObjectSubsystem::GetCurrent(GetWorld());
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if (!Subsystem)
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{
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return;
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}
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// getting new options for current interact actor.
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TArray<FGGS_InteractionOption> NewOptions;
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{
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TArray<FSmartObjectRequestResult> Results;
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if (IsValid(InteractableActor) && UGGS_SmartObjectFunctionLibrary::FindSmartObjectsWithInteractionEntranceInActor(GetSmartObjectRequestFilter(), InteractableActor, Results, GetOwner()))
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{
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for (int32 i = 0; i < Results.Num(); i++)
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{
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FGGS_InteractionOption Option;
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UGGS_InteractionDefinition* FoundDefinition;
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if (UGGS_SmartObjectFunctionLibrary::FindInteractionDefinitionFromSmartObjectSlot(this, Results[i].SlotHandle, FoundDefinition))
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{
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Option.Definition = FoundDefinition;
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Option.SlotState = Subsystem->GetSlotState(Results[i].SlotHandle);
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Option.RequestResult = Results[i];
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Option.SlotIndex = i;
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Option.BehaviorDefinition = Subsystem->GetBehaviorDefinitionByRequestResult(Results[i], USmartObjectBehaviorDefinition::StaticClass());
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NewOptions.Add(Option);
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}
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}
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}
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}
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// check any options changed.
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bool bOptionsChanged = false;
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{
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if (NewOptions.Num() == InteractionOptions.Num())
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{
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NewOptions.Sort();
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for (int OptionIndex = 0; OptionIndex < NewOptions.Num(); OptionIndex++)
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{
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const FGGS_InteractionOption& NewOption = NewOptions[OptionIndex];
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const FGGS_InteractionOption& CurrentOption = InteractionOptions[OptionIndex];
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if (NewOption != CurrentOption)
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{
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bOptionsChanged = true;
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break;
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}
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}
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}
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else
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{
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bOptionsChanged = true;
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}
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}
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if (bOptionsChanged)
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{
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// unregister event callbacks for existing options.
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for (int32 i = 0; i < InteractionOptions.Num(); i++)
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{
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auto& Handle = InteractionOptions[i].RequestResult.SlotHandle;
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if (SlotCallbacks.Contains(Handle))
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{
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if (FOnSmartObjectEvent* OnEventDelegate = Subsystem->GetSlotEventDelegate(Handle))
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{
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OnEventDelegate->Remove(SlotCallbacks[Handle]);
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SlotCallbacks.Remove(Handle);
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}
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}
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}
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for (FGGS_InteractionOption& Option : InteractionOptions)
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{
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if (SlotCallbacks.Contains(Option.RequestResult.SlotHandle))
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{
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if (FOnSmartObjectEvent* OnEventDelegate = Subsystem->GetSlotEventDelegate(Option.RequestResult.SlotHandle))
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{
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OnEventDelegate->Remove(SlotCallbacks[Option.RequestResult.SlotHandle]);
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SlotCallbacks.Remove(Option.RequestResult.SlotHandle);
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}
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}
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// if (Option.DelegateHandle.IsValid())
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// {
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// if (FOnSmartObjectEvent* OnEventDelegate = Subsystem->GetSlotEventDelegate(Option.RequestResult.SlotHandle))
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// {
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// OnEventDelegate->Remove(Option.DelegateHandle);
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// Option.DelegateHandle.Reset();
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// }
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// }
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}
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InteractionOptions = NewOptions;
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MARK_PROPERTY_DIRTY_FROM_NAME(ThisClass, InteractionOptions, this)
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GGS_CLOG(Verbose, "Interaction options changed, nums of options:%d", InteractionOptions.Num())
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// register slot event callbacks.
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// for (int32 i = 0; i < InteractionOptions.Num(); i++)
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// {
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// FGGS_InteractionOption& Option = InteractionOptions[i];
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// if (FOnSmartObjectEvent* OnEventDelegate = Subsystem->GetSlotEventDelegate(Option.RequestResult.SlotHandle))
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// {
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// Option.DelegateHandle = OnEventDelegate->AddUObject(this, &ThisClass::OnSmartObjectEventCallback);
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// }
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// }
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for (int32 i = 0; i < InteractionOptions.Num(); i++)
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{
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auto& Handle = InteractionOptions[i].RequestResult.SlotHandle;
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if (FOnSmartObjectEvent* OnEventDelegate = Subsystem->GetSlotEventDelegate(Handle))
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{
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FDelegateHandle DelegateHandle = OnEventDelegate->AddUObject(this, &ThisClass::OnSmartObjectEventCallback);
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SlotCallbacks.Emplace(Handle, DelegateHandle);
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}
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}
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OnInteractionOptionsChanged();
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}
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}
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