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#rb patrick.enfedaque #ROBOMERGE-SOURCE: CL 16484052 in //UE5/Private-Frosty/... #ROBOMERGE-BOT: STARSHIP (Private-Frosty -> Main) (v823-16466674) [CL 16484321 by sebastien lussier in ue5-main branch]
105 lines
3.4 KiB
C++
105 lines
3.4 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#include "HLODBuilder.h"
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#include "Engine/StaticMesh.h"
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#include "Components/InstancedStaticMeshComponent.h"
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#include "WorldPartition/HLOD/HLODActor.h"
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#include "WorldPartition/HLOD/HLODLayer.h"
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#include "AssetCompilingManager.h"
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DEFINE_LOG_CATEGORY(LogHLODBuilder);
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void FHLODBuilder::Build(AWorldPartitionHLOD* InHLODActor, const UHLODLayer* InHLODLayer, const TArray<FWorldPartitionReference>& InSubActors)
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{
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TArray<UPrimitiveComponent*> SubComponents = GatherPrimitiveComponents(InSubActors);
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if (SubComponents.IsEmpty())
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{
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return;
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}
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// Before capturing the scene, make sure all assets are finished compiling
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FAssetCompilingManager::Get().FinishAllCompilation();
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TArray<UPrimitiveComponent*> HLODPrimitives = CreateComponents(InHLODActor, InHLODLayer, SubComponents);
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HLODPrimitives.RemoveSwap(nullptr);
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if (!HLODPrimitives.IsEmpty())
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{
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InHLODActor->Modify();
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InHLODActor->SetHLODPrimitives(HLODPrimitives);
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}
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}
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TArray<UPrimitiveComponent*> FHLODBuilder::GatherPrimitiveComponents(const TArray<FWorldPartitionReference>& InActors)
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{
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TArray<UPrimitiveComponent*> PrimitiveComponents;
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auto GatherPrimitivesFromActor = [&PrimitiveComponents](const AActor* Actor, const AActor* ParentActor = nullptr)
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{
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const TCHAR* Padding = ParentActor ? TEXT(" ") : TEXT("");
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UE_LOG(LogHLODBuilder, Verbose, TEXT("%s* Adding components from actor %s"), Padding, *Actor->GetName());
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for (UActorComponent* SubComponent : Actor->GetComponents())
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{
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if (SubComponent && SubComponent->IsHLODRelevant())
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{
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if (UPrimitiveComponent* PrimitiveComponent = Cast<UPrimitiveComponent>(SubComponent))
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{
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PrimitiveComponents.Add(PrimitiveComponent);
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if (UInstancedStaticMeshComponent* ISMC = Cast<UInstancedStaticMeshComponent>(PrimitiveComponent))
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{
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UE_LOG(LogHLODBuilder, Verbose, TEXT("%s * %s [%d instances]"), Padding, *ISMC->GetStaticMesh()->GetName(), ISMC->GetInstanceCount());
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}
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else if (UStaticMeshComponent* SMC = Cast<UStaticMeshComponent>(PrimitiveComponent))
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{
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UE_LOG(LogHLODBuilder, Verbose, TEXT("%s * %s"), Padding, *SMC->GetStaticMesh()->GetName());
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}
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}
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else
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{
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UE_LOG(LogHLODBuilder, Warning, TEXT("Component \"%s\" is marked as HLOD-relevant but this type of component currently unsupported."), *SubComponent->GetFullName());
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}
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}
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}
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};
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TSet<AActor*> UnderlyingActors;
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for (const FWorldPartitionReference& ActorRef : InActors)
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{
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AActor* Actor = ActorRef->GetActor();
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// Gather primitives from the Actor
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GatherPrimitivesFromActor(Actor);
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// Retrieve all underlying actors (ex: all sub actors of a LevelInstance)
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UnderlyingActors.Reset();
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Actor->EditorGetUnderlyingActors(UnderlyingActors);
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// Gather primitives from underlying actors
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for (const AActor* UnderlyingActor : UnderlyingActors)
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{
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if (UnderlyingActor->IsHLODRelevant())
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{
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GatherPrimitivesFromActor(UnderlyingActor, Actor);
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}
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}
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}
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return PrimitiveComponents;
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}
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void FHLODBuilder::DisableCollisions(UPrimitiveComponent* Component)
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{
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Component->SetCollisionProfileName(UCollisionProfile::NoCollision_ProfileName);
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Component->SetGenerateOverlapEvents(false);
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Component->SetCanEverAffectNavigation(false);
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Component->CanCharacterStepUpOn = ECanBeCharacterBase::ECB_No;
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Component->SetCanEverAffectNavigation(false);
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Component->SetCollisionEnabled(ECollisionEnabled::NoCollision);
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}
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