WorldPartitionPropertyOverride.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "CoreFwd.h"
#include "UObject/ObjectMacros.h"
#include "UObject/UObjectGlobals.h"
#include "UObject/Object.h"
#include "WorldPartition/WorldPartitionActorContainerID.h"
 
#include "WorldPartitionPropertyOverride.generated.h"
 
class FProperty;
 
// Per Sub-Object serialized tagged properties
USTRUCT(NotBlueprintable)
struct FSubObjectPropertyOverride
{
    GENERATED_BODY()
 
#if WITH_EDITORONLY_DATA
public:
    UPROPERTY()
    TArray<uint8> SerializedTaggedProperties;
#endif
};
 
USTRUCT(NotBlueprintable)
struct FPropertyOverrideReferenceTable
{
    GENERATED_BODY()
 
#if WITH_EDITORONLY_DATA
    // Contains SoftObjectPaths from the FSubObjectPropertyOverride serialization so that they can be properly fixed up (fixup redirectors)
    // This table should not be changed outside of serialization of the SubObjectOverrides
    UPROPERTY()
    TArray<FSoftObjectPath> SoftObjectPathTable;
 
    // Contains hard refs from the SoftObjectPathTable
    UPROPERTY()
    TSet<TObjectPtr<UObject>> ObjectReferences;
 
    // Support previous data this will be false until this override is resaved
    UPROPERTY()
    bool bIsValid = false;
#endif
};
 
// Per Actor overrides, includes a map of Sub-Object name to FSubObjectPropertyOverride data
USTRUCT(NotBlueprintable)
struct FActorPropertyOverride
{
    GENERATED_BODY()
 
#if WITH_EDITORONLY_DATA
public:
    // Used to Serialize newly overriden ActorDescs
    UPROPERTY(Transient)
    TWeakObjectPtr<AActor> Actor;
 
    UPROPERTY()
    TMap<FString, FSubObjectPropertyOverride> SubObjectOverrides;
 
    UPROPERTY()
    mutable FPropertyOverrideReferenceTable ReferenceTable;
#endif
};
 
// Per Container overrides, insludes a map of ActorGuid to FActorPropertyOverride data
USTRUCT(NotBlueprintable)
struct FContainerPropertyOverride
{
    GENERATED_BODY()
 
#if WITH_EDITORONLY_DATA
public:
    UPROPERTY()
    TMap<FGuid, FActorPropertyOverride> ActorOverrides;
#endif
};
 
// Per Container/Sub-Container overrides, includes a map of ContainerPath to FContainerPropertyOverride data
UCLASS(MinimalAPI, NotBlueprintable)
class UWorldPartitionPropertyOverride : public UObject
{
    GENERATED_BODY()
public:
    UWorldPartitionPropertyOverride() {}
    virtual ~UWorldPartitionPropertyOverride() {}
 
#if WITH_EDITOR
    const TMap<FActorContainerPath, FContainerPropertyOverride>& GetPropertyOverridesPerContainer() const { return PropertyOverridesPerContainer; }
 
protected:
    friend class FWorldPartitionLevelHelper;
    friend class UWorldPartitionLevelStreamingDynamic;
    friend class UWorldPartitionSubsystem;
 
    ENGINE_API static bool ApplyPropertyOverrides(const FActorPropertyOverride* InPropertyOverride, AActor* InActor, bool bConstructionScriptProperties);
#endif
 
#if WITH_EDITORONLY_DATA
    UPROPERTY()
    TMap<FActorContainerPath, FContainerPropertyOverride> PropertyOverridesPerContainer;
#endif
};
 
// Policy used to choose which properties can be overriden (serialized)
UCLASS(Abstract, NotBlueprintable)
class UWorldPartitionPropertyOverridePolicy : public UObject
{
    GENERATED_BODY()
public:
    UWorldPartitionPropertyOverridePolicy() {}
    virtual ~UWorldPartitionPropertyOverridePolicy() {}
#if WITH_EDITOR
    virtual bool CanOverrideProperty(const FProperty* InProperty) const PURE_VIRTUAL(UWorldPartitionPropertyOverridePolicy::CanOverrideProperty, return false;)
#endif
};