LevelInstanceContainerInstance.h

Go to the documentation of this file.

// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "CoreFwd.h"
#include "Misc/Optional.h"
#include "WorldPartition/ActorDescContainerInstance.h"
#include "LevelInstance/LevelInstancePropertyOverrideAsset.h"
#include "LevelInstanceContainerInstance.generated.h"
 
class ULevelInstancePropertyOverrideAsset;
struct FWorldPartitionRuntimeCellPropertyOverride;
 
UCLASS(MinimalAPI)
class ULevelInstanceContainerInstance : public UActorDescContainerInstance
{
    GENERATED_BODY()
 
    ULevelInstanceContainerInstance() {}
    virtual ~ULevelInstanceContainerInstance() {}
    
#if WITH_EDITOR
protected:
    friend class FLevelInstanceActorDesc;
    friend class ULevelStreamingLevelInstance;
    friend class ULevelStreamingLevelInstanceEditorPropertyOverride;
    friend class ULevelInstanceSubsystem;
 
    ENGINE_API void SetOverrideContainerAndAsset(UActorDescContainer* InOverrideContainer, ULevelInstancePropertyOverrideAsset* InAsset);
    
    virtual void Initialize(const FInitializeParams& InParams) override;
    virtual void Uninitialize();
 
    virtual void GetPropertyOverridesForActor(const FActorContainerID& InContainerID, const FGuid& InActorGuid, TArray<FWorldPartitionRuntimeCellPropertyOverride>& OutPropertyOverrides) const override;
    ENGINE_API void GetPropertyOverridesForActor(const FActorContainerID& InContainerID, const FActorContainerID& InContextContainerID, const FGuid& InActorGuid, TArray<FLevelInstanceActorPropertyOverride>& OutPropertyOverrides) const;
 
    virtual void RegisterContainer(const FInitializeParams& InParams) override;
    virtual void UnregisterContainer() override;
    
    virtual FWorldPartitionActorDesc* GetActorDesc(const FGuid& InActorGuid) const override;
    virtual FWorldPartitionActorDesc* GetActorDescChecked(const FGuid& InActorGuid) const override;
 
    FWorldPartitionActorDesc* GetOverrideActorDesc(const FGuid& InActorGuid, const FActorContainerPath& Path = FActorContainerPath()) const;
 
    FWorldPartitionActorDescInstance CreateActorDescInstance(FWorldPartitionActorDesc* InActorDesc) override { return FWorldPartitionActorDescInstance(this, GetActorDescChecked(InActorDesc->GetGuid())); }
#endif
 
#if WITH_EDITORONLY_DATA
    UPROPERTY(Transient)
    TObjectPtr<UActorDescContainer> OverrideContainer;
 
    UPROPERTY(Transient)
    TArray<TObjectPtr<UActorDescContainer>> ParentContainerReferences;
 
    // This is a Weak Ptr because parent level instance can get unloaded first and we don't want to cause a leak as we are going to get unloaded afterwards anyways
    UPROPERTY(Transient)
    TWeakObjectPtr<ULevelInstancePropertyOverrideAsset> PropertyOverrideAsset;
        
    UPROPERTY(Transient)
    TMap<FActorContainerID, FActorContainerPath> ContainerIDToContainerPath;
#endif
};