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// Copyright 2025 https://yuewu.dev/en All Rights Reserved.
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#include "GIS_EquipmentInstance.h"
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#include "Engine/World.h"
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#include "Components/SkeletalMeshComponent.h"
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#include "Engine/BlueprintGeneratedClass.h"
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#include "GameFramework/Character.h"
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#include "Net/UnrealNetwork.h"
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#include "TimerManager.h"
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#if UE_WITH_IRIS
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#include "Iris/ReplicationSystem/ReplicationFragmentUtil.h"
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#endif // UE_WITH_IRIS
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#include "GIS_EquipmentActorInterface.h"
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#include "GIS_EquipmentSystemComponent.h"
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#include "Items/GIS_ItemInstance.h"
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#include "GIS_ItemFragment_Equippable.h"
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#include "GIS_LogChannels.h"
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#include "Pickups/GIS_WorldItemComponent.h"
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#include UE_INLINE_GENERATED_CPP_BY_NAME(GIS_EquipmentInstance)
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class FLifetimeProperty;
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class UClass;
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class USceneComponent;
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UGIS_EquipmentInstance::UGIS_EquipmentInstance(const FObjectInitializer& ObjectInitializer)
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: Super(ObjectInitializer)
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{
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bIsActive = false;
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}
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bool UGIS_EquipmentInstance::IsSupportedForNetworking() const
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{
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return true;
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}
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UWorld* UGIS_EquipmentInstance::GetWorld() const
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{
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if (OwningPawn)
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{
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return OwningPawn->GetWorld();
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}
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if (UObject* Outer = GetOuter())
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{
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return Outer->GetWorld();
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}
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return nullptr;
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}
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void UGIS_EquipmentInstance::GetLifetimeReplicatedProps(TArray<FLifetimeProperty>& OutLifetimeProps) const
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{
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Super::GetLifetimeReplicatedProps(OutLifetimeProps);
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// DOREPLIFETIME(ThisClass, SourceItem);
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// fix: https://forums.unrealengine.com/t/subobject-replication-for-blueprint-child-class/106205/4
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UBlueprintGeneratedClass* bpClass = Cast<UBlueprintGeneratedClass>(this->GetClass());
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if (bpClass != nullptr)
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{
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bpClass->GetLifetimeBlueprintReplicationList(OutLifetimeProps);
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}
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DOREPLIFETIME(ThisClass, EquipmentActors);
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}
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void UGIS_EquipmentInstance::ReceiveOwningPawn_Implementation(APawn* NewPawn)
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{
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OwningPawn = NewPawn;
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}
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APawn* UGIS_EquipmentInstance::GetOwningPawn_Implementation() const
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{
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return OwningPawn;
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}
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void UGIS_EquipmentInstance::ReceiveSourceItem_Implementation(UGIS_ItemInstance* NewItem)
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{
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SourceItem = NewItem;
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}
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UGIS_ItemInstance* UGIS_EquipmentInstance::GetSourceItem_Implementation() const
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{
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return SourceItem;
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}
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void UGIS_EquipmentInstance::OnEquipmentBeginPlay_Implementation()
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{
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if (OwningPawn->HasAuthority())
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{
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SpawnAndSetupEquipmentActors(SourceItem->FindFragmentByClass<UGIS_ItemFragment_Equippable>()->ActorsToSpawn);
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}
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else
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{
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SetupEquipmentActors(EquipmentActors);
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}
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}
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void UGIS_EquipmentInstance::OnEquipmentTick_Implementation(float DeltaSeconds)
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{
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}
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void UGIS_EquipmentInstance::OnEquipmentEndPlay_Implementation()
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{
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DestroyEquipmentActors();
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}
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#if UE_WITH_IRIS
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void UGIS_EquipmentInstance::RegisterReplicationFragments(UE::Net::FFragmentRegistrationContext& Context, UE::Net::EFragmentRegistrationFlags RegistrationFlags)
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{
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using namespace UE::Net;
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// Build descriptors and allocate PropertyReplicationFragments for this object
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FReplicationFragmentUtil::CreateAndRegisterFragmentsForObject(this, Context, RegistrationFlags);
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}
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#endif // UE_WITH_IRIS
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bool UGIS_EquipmentInstance::IsEquipmentActive_Implementation() const
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{
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return bIsActive;
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}
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void UGIS_EquipmentInstance::OnActiveStateChanged_Implementation(bool NewActiveState)
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{
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bIsActive = NewActiveState;
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SetupActiveStateForEquipmentActors(EquipmentActors);
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OnActiveStateChangedEvent.Broadcast(NewActiveState);
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}
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APawn* UGIS_EquipmentInstance::GetTypedOwningPawn(TSubclassOf<APawn> PawnType) const
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{
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APawn* Result = nullptr;
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if (UClass* ActualPawnType = PawnType)
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{
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if (APawn* Pawn = Execute_GetOwningPawn(this))
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{
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if (Pawn->IsA(ActualPawnType))
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{
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Result = Pawn;
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}
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}
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}
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return Result;
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}
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bool UGIS_EquipmentInstance::CanActivate_Implementation() const
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{
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return true;
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}
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int32 UGIS_EquipmentInstance::GetIndexOfEquipmentActor(const AActor* InEquipmentActor) const
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{
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if (IsValid(InEquipmentActor) && EquipmentActors.Contains(InEquipmentActor))
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{
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for (int32 i = 0; i < EquipmentActors.Num(); i++)
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{
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if (EquipmentActors[i] == InEquipmentActor)
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{
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return i;
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}
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}
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}
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return INDEX_NONE;
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}
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AActor* UGIS_EquipmentInstance::GetTypedEquipmentActor(TSubclassOf<AActor> DesiredClass) const
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{
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if (UClass* RealClass = DesiredClass)
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{
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for (const TObjectPtr<AActor>& SpawnedActor : EquipmentActors)
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{
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if (SpawnedActor && SpawnedActor->GetClass()->IsChildOf(RealClass))
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{
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return SpawnedActor;
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}
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}
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}
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return nullptr;
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}
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void UGIS_EquipmentInstance::SpawnAndSetupEquipmentActors(const TArray<FGIS_EquipmentActorToSpawn>& ActorsToSpawn)
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{
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if (OwningPawn == nullptr || !OwningPawn->HasAuthority())
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{
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return;
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}
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USceneComponent* AttachParent = GetAttachParentForSpawnedActors(OwningPawn);
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for (int32 i = 0; i < ActorsToSpawn.Num(); ++i)
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{
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const FGIS_EquipmentActorToSpawn& SpawnInfo = ActorsToSpawn[i];
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if (SpawnInfo.ActorToSpawn.IsNull())
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{
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continue;
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}
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TSubclassOf<AActor> ActorClass = SpawnInfo.ActorToSpawn.LoadSynchronous();
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if (!ActorClass)
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{
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GIS_CLOG(Warning, "%s Failed to load actor class at index: %d ", *GetName(), i);
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continue;
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}
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if (!ActorClass->ImplementsInterface(UGIS_EquipmentActorInterface::StaticClass()))
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{
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GIS_CLOG(Warning, "actor class(%s) doesn't implements:%s", *ActorClass->GetName(), *UGIS_EquipmentActorInterface::StaticClass()->GetName());
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continue;
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}
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AActor* NewActor = GetWorld()->SpawnActorDeferred<AActor>(ActorClass, FTransform::Identity, OwningPawn);
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if (NewActor == nullptr)
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{
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GIS_CLOG(Warning, "%s Failed to spawn actor of class: %s at index: %d ", *GetName(), *ActorClass->GetName(), i);
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continue;
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}
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BeforeSpawningActor(NewActor);
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NewActor->FinishSpawning(FTransform::Identity, /*bIsDefaultTransform=*/true);
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if (SpawnInfo.bShouldAttach)
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{
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NewActor->SetActorRelativeTransform(SpawnInfo.AttachTransform);
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NewActor->AttachToComponent(AttachParent, FAttachmentTransformRules::KeepRelativeTransform, SpawnInfo.AttachSocket);
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}
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EquipmentActors.Add(NewActor);
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}
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SetupEquipmentActors(EquipmentActors);
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}
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void UGIS_EquipmentInstance::DestroyEquipmentActors()
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{
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if (OwningPawn == nullptr || !OwningPawn->HasAuthority())
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{
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return;
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}
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for (AActor* Actor : EquipmentActors)
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{
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if (!IsValid(Actor))
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{
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continue;
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}
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if (IsValid(Actor) && Actor->GetClass()->ImplementsInterface(UGIS_EquipmentActorInterface::StaticClass()))
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{
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IGIS_EquipmentActorInterface::Execute_ReceiveEquipmentEndPlay(Actor);
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}
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if (IsValid(Actor))
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{
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Actor->Destroy();
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}
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}
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EquipmentActors.Empty();
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}
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USceneComponent* UGIS_EquipmentInstance::GetAttachParentForSpawnedActors_Implementation(APawn* Pawn) const
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{
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if (ACharacter* Char = Cast<ACharacter>(Pawn))
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{
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return Char->GetMesh();
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}
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if (Pawn)
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{
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return Pawn->FindComponentByClass<USkeletalMeshComponent>();
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}
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return nullptr;
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}
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void UGIS_EquipmentInstance::BeforeSpawningActor_Implementation(AActor* SpawningActor) const
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{
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}
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void UGIS_EquipmentInstance::SetupEquipmentActors_Implementation(const TArray<AActor*>& InActors)
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{
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if (!OwningPawn)
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{
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return;
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}
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if (OwningPawn->HasAuthority())
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{
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for (int32 i = 0; i < InActors.Num(); i++)
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{
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UGIS_WorldItemComponent* WorldItem = InActors[i]->FindComponentByClass<UGIS_WorldItemComponent>();
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if (WorldItem != nullptr)
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{
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WorldItem->SetItemInfo(SourceItem, 1);
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}
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}
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}
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for (int32 i = 0; i < InActors.Num(); i++)
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{
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AActor* Actor = InActors[i];
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if (IsValid(Actor))
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{
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if (Actor->GetClass()->ImplementsInterface(UGIS_EquipmentActorInterface::StaticClass()))
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{
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IGIS_EquipmentActorInterface::Execute_ReceiveSourceEquipment(Actor, this, i);
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IGIS_EquipmentActorInterface::Execute_ReceiveEquipmentBeginPlay(Actor);
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}
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}
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}
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}
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void UGIS_EquipmentInstance::OnRep_EquipmentActors()
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{
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}
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bool UGIS_EquipmentInstance::IsEquipmentActorsValid(int32 Num) const
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{
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if (EquipmentActors.Num() == Num)
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{
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bool bValid = true;
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for (int32 i = 0; i < EquipmentActors.Num(); i++)
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{
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if (!IsValid(EquipmentActors[i]))
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{
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bValid = false;
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break;
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}
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}
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return bValid;
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}
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return false;
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}
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void UGIS_EquipmentInstance::SetupInitialStateForEquipmentActors(const TArray<AActor*>& InActors)
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{
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}
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void UGIS_EquipmentInstance::SetupActiveStateForEquipmentActors(const TArray<AActor*>& InActors) const
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{
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for (int32 i = 0; i < InActors.Num(); i++)
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{
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AActor* Actor = InActors[i];
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if (IsValid(Actor) && Actor->GetClass()->ImplementsInterface(UGIS_EquipmentInterface::StaticClass()))
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{
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Execute_OnActiveStateChanged(Actor, bIsActive);
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}
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}
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}
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