void UUnrealEdEngine::SelectGroup(AGroupActor* InGroupActor, bool bForceSelection/*=false*/, bool bInSelected/*=true*/, bool bNotify/*=true*/)
{
USelection* SelectedActors = GetSelectedActors();
SelectedActors->BeginBatchSelectOperation();
SelectedActors->Modify();
static bool bIteratingGroups = false;
if( !bIteratingGroups )
{
bIteratingGroups = true;
// Select all actors within the group (if locked or forced)
if( bForceSelection || InGroupActor->IsLocked() )
{
TArray<AActor*> GroupActors;
InGroupActor->GetGroupActors(GroupActors);
for( int32 ActorIndex=0; ActorIndex < GroupActors.Num(); ++ActorIndex )
{
SelectActor(GroupActors[ActorIndex], bInSelected, false );
}
bForceSelection = true;
// Recursively select any subgroups
TArray<AGroupActor*> SubGroups;
InGroupActor->GetSubGroups(SubGroups);
for( int32 GroupIndex=0; GroupIndex < SubGroups.Num(); ++GroupIndex )
{
SelectGroup(SubGroups[GroupIndex], bForceSelection, bInSelected, false);
}
}
SelectedActors->EndBatchSelectOperation(bNotify);
if (bNotify)
{
NoteSelectionChange();
}
//whenever selection changes, recompute whether the selection contains a locked actor
bCheckForLockActors = true;
//whenever selection changes, recompute whether the selection contains a world info actor
bCheckForWorldSettingsActors = true;
bIteratingGroups = false;
}
}
/**
* Attempt to lock/unlock the level of this window
*
* @param bLocked If true, attempt to lock the level; If false, attempt to unlock the level
*/
void FLevelViewModel::SetLocked(bool bLocked)
{
if( !Level.IsValid() )
{
return;
}
// Do nothing if attempting to set the level to the same locked state or if trying to lock/unlock the p-level
if ( bLocked == IsLocked() || IsPersistent() )
{
return;
}
// If locking the level, deselect all of its actors and BSP surfaces
if ( bLocked )
{
USelection* SelectedActors = GEditor->GetSelectedActors();
SelectedActors->Modify();
// Deselect all level actors
for ( TArray<AActor*>::TConstIterator LevelActorIterator( Level->Actors ); LevelActorIterator; ++LevelActorIterator )
{
AActor* CurActor = *LevelActorIterator;
if ( CurActor )
{
SelectedActors->Deselect( CurActor );
}
}
// Deselect all level BSP surfaces
EditorLevelUtils::DeselectAllSurfacesInLevel(Level.Get());
// Tell the editor selection status was changed.
GEditor->NoteSelectionChange();
// If locking the current level, reset the p-level as the current level
//@todo: fix this!
}
// Change the level's locked status
FLevelUtils::ToggleLevelLock( Level.Get() );
}
void FLevelModel::DeselectAllActors()
{
ULevel* Level = GetLevelObject();
if (Level == NULL)
{
return;
}
USelection* SelectedActors = Editor->GetSelectedActors();
SelectedActors->Modify();
// Deselect all level actors
for (auto It = Level->Actors.CreateIterator(); It; ++It)
{
AActor* CurActor = (*It);
if (CurActor)
{
SelectedActors->Deselect(CurActor);
}
}
}
void FBlueprintCompileReinstancer::ReplaceInstancesOfClass(UClass* OldClass, UClass* NewClass, UObject* OriginalCDO, TSet<UObject*>* ObjectsThatShouldUseOldStuff)
{
USelection* SelectedActors;
bool bSelectionChanged = false;
TArray<UObject*> ObjectsToReplace;
const bool bLogConversions = false; // for debugging
// Map of old objects to new objects
TMap<UObject*, UObject*> OldToNewInstanceMap;
TMap<UClass*, UClass*> OldToNewClassMap;
OldToNewClassMap.Add(OldClass, NewClass);
TMap<FStringAssetReference, UObject*> ReinstancedObjectsWeakReferenceMap;
// actors being replace
TArray<FActorReplacementHelper> ReplacementActors;
// A list of objects (e.g. Blueprints) that potentially have editors open that we need to refresh
TArray<UObject*> PotentialEditorsForRefreshing;
// A list of component owners that need their construction scripts re-ran (because a component of theirs has been reinstanced)
TSet<AActor*> OwnersToReconstruct;
// Set global flag to let system know we are reconstructing blueprint instances
TGuardValue<bool> GuardTemplateNameFlag(GIsReconstructingBlueprintInstances, true);
struct FObjectRemappingHelper
{
void OnObjectsReplaced(const TMap<UObject*, UObject*>& InReplacedObjects)
{
ReplacedObjects.Append(InReplacedObjects);
}
TMap<UObject*, UObject*> ReplacedObjects;
} ObjectRemappingHelper;
FDelegateHandle OnObjectsReplacedHandle = GEditor->OnObjectsReplaced().AddRaw(&ObjectRemappingHelper,&FObjectRemappingHelper::OnObjectsReplaced);
{ BP_SCOPED_COMPILER_EVENT_STAT(EKismetReinstancerStats_ReplaceInstancesOfClass);
const bool bIncludeDerivedClasses = false;
GetObjectsOfClass(OldClass, ObjectsToReplace, bIncludeDerivedClasses);
SelectedActors = GEditor->GetSelectedActors();
SelectedActors->BeginBatchSelectOperation();
SelectedActors->Modify();
// Then fix 'real' (non archetype) instances of the class
for (UObject* OldObject : ObjectsToReplace)
{
// Skip non-archetype instances, EXCEPT for component templates
const bool bIsComponent = NewClass->IsChildOf(UActorComponent::StaticClass());
if ((!bIsComponent && OldObject->IsTemplate()) || OldObject->IsPendingKill())
{
continue;
}
UBlueprint* CorrespondingBlueprint = Cast<UBlueprint>(OldObject->GetClass()->ClassGeneratedBy);
UObject* OldBlueprintDebugObject = nullptr;
// If this object is being debugged, cache it off so we can preserve the 'object being debugged' association
if ((CorrespondingBlueprint != nullptr) && (CorrespondingBlueprint->GetObjectBeingDebugged() == OldObject))
{
OldBlueprintDebugObject = OldObject;
}
AActor* OldActor = Cast<AActor>(OldObject);
UObject* NewUObject = nullptr;
// if the object to replace is an actor...
if (OldActor != nullptr)
{
FVector Location = FVector::ZeroVector;
FRotator Rotation = FRotator::ZeroRotator;
if (USceneComponent* OldRootComponent = OldActor->GetRootComponent())
{
Location = OldActor->GetActorLocation();
Rotation = OldActor->GetActorRotation();
}
// If this actor was spawned from an Archetype, we spawn the new actor from the new version of that archetype
UObject* OldArchetype = OldActor->GetArchetype();
UWorld* World = OldActor->GetWorld();
AActor* NewArchetype = Cast<AActor>(OldToNewInstanceMap.FindRef(OldArchetype));
// Check that either this was an instance of the class directly, or we found a new archetype for it
check(OldArchetype == OldClass->GetDefaultObject() || NewArchetype);
// Spawn the new actor instance, in the same level as the original, but deferring running the construction script until we have transferred modified properties
ULevel* ActorLevel = OldActor->GetLevel();
UClass** MappedClass = OldToNewClassMap.Find(OldActor->GetClass());
UClass* SpawnClass = MappedClass ? *MappedClass : NewClass;
FActorSpawnParameters SpawnInfo;
SpawnInfo.OverrideLevel = ActorLevel;
SpawnInfo.Template = NewArchetype;
SpawnInfo.bNoCollisionFail = true;
SpawnInfo.bDeferConstruction = true;
// Temporarily remove the deprecated flag so we can respawn the Blueprint in the level
const bool bIsClassDeprecated = SpawnClass->HasAnyClassFlags(CLASS_Deprecated);
SpawnClass->ClassFlags &= ~CLASS_Deprecated;
AActor* NewActor = World->SpawnActor(SpawnClass, &Location, &Rotation, SpawnInfo);
// Reassign the deprecated flag if it was previously assigned
if (bIsClassDeprecated)
{
SpawnClass->ClassFlags |= CLASS_Deprecated;
}
check(NewActor != nullptr);
NewUObject = NewActor;
// store the new actor for the second pass (NOTE: this detaches
// OldActor from all child/parent attachments)
//
// running the NewActor's construction-script is saved for that
// second pass (because the construction-script may reference
// another instance that hasn't been replaced yet).
ReplacementActors.Add(FActorReplacementHelper(NewActor, OldActor));
ReinstancedObjectsWeakReferenceMap.Add(OldObject, NewUObject);
OldActor->DestroyConstructedComponents(); // don't want to serialize components from the old actor
// Unregister native components so we don't copy any sub-components they generate for themselves (like UCameraComponent does)
OldActor->UnregisterAllComponents();
// Unregister any native components, might have cached state based on properties we are going to overwrite
NewActor->UnregisterAllComponents();
UEditorEngine::CopyPropertiesForUnrelatedObjects(OldActor, NewActor);
// reset properties/streams
NewActor->ResetPropertiesForConstruction();
// register native components
NewActor->RegisterAllComponents();
//
// clean up the old actor (unselect it, remove it from the world, etc.)...
if (OldActor->IsSelected())
{
GEditor->SelectActor(OldActor, /*bInSelected =*/false, /*bNotify =*/false);
bSelectionChanged = true;
}
if (GEditor->Layers.IsValid()) // ensure(NULL != GEditor->Layers) ?? While cooking the Layers is NULL.
{
GEditor->Layers->DisassociateActorFromLayers(OldActor);
}
World->EditorDestroyActor(OldActor, /*bShouldModifyLevel =*/true);
OldToNewInstanceMap.Add(OldActor, NewActor);
}
else
{
FName OldName(OldObject->GetFName());
OldObject->Rename(NULL, OldObject->GetOuter(), REN_DoNotDirty | REN_DontCreateRedirectors);
NewUObject = NewObject<UObject>(OldObject->GetOuter(), NewClass, OldName);
check(NewUObject != nullptr);
UEditorEngine::CopyPropertiesForUnrelatedObjects(OldObject, NewUObject);
if (UAnimInstance* AnimTree = Cast<UAnimInstance>(NewUObject))
{
// Initialising the anim instance isn't enough to correctly set up the skeletal mesh again in a
// paused world, need to initialise the skeletal mesh component that contains the anim instance.
if (USkeletalMeshComponent* SkelComponent = Cast<USkeletalMeshComponent>(AnimTree->GetOuter()))
{
SkelComponent->InitAnim(true);
}
}
OldObject->RemoveFromRoot();
OldObject->MarkPendingKill();
OldToNewInstanceMap.Add(OldObject, NewUObject);
if (bIsComponent)
{
UActorComponent* Component = Cast<UActorComponent>(NewUObject);
AActor* OwningActor = Component->GetOwner();
if (OwningActor)
{
OwningActor->ResetOwnedComponents();
// Check to see if they have an editor that potentially needs to be refreshed
if (OwningActor->GetClass()->ClassGeneratedBy)
{
PotentialEditorsForRefreshing.AddUnique(OwningActor->GetClass()->ClassGeneratedBy);
}
// we need to keep track of actor instances that need
// their construction scripts re-ran (since we've just
// replaced a component they own)
OwnersToReconstruct.Add(OwningActor);
}
}
}
// If this original object came from a blueprint and it was in the selected debug set, change the debugging to the new object.
if ((CorrespondingBlueprint) && (OldBlueprintDebugObject) && (NewUObject))
{
CorrespondingBlueprint->SetObjectBeingDebugged(NewUObject);
}
if (bLogConversions)
{
UE_LOG(LogBlueprint, Log, TEXT("Converted instance '%s' to '%s'"), *OldObject->GetPathName(), *NewUObject->GetPathName());
}
}
}
GEditor->OnObjectsReplaced().Remove(OnObjectsReplacedHandle);
// Now replace any pointers to the old archetypes/instances with pointers to the new one
TArray<UObject*> SourceObjects;
TArray<UObject*> DstObjects;
OldToNewInstanceMap.GenerateKeyArray(SourceObjects);
OldToNewInstanceMap.GenerateValueArray(DstObjects); // Also look for references in new spawned objects.
SourceObjects.Append(DstObjects);
FReplaceReferenceHelper::IncludeCDO(OldClass, NewClass, OldToNewInstanceMap, SourceObjects, OriginalCDO);
FReplaceReferenceHelper::FindAndReplaceReferences(SourceObjects, ObjectsThatShouldUseOldStuff, ObjectsToReplace, OldToNewInstanceMap, ReinstancedObjectsWeakReferenceMap);
{ BP_SCOPED_COMPILER_EVENT_STAT(EKismetReinstancerStats_ReplacementConstruction);
// the process of setting up new replacement actors is split into two
// steps (this here, is the second)...
//
// the "finalization" here runs the replacement actor's construction-
// script and is left until late to account for a scenario where the
// construction-script attempts to modify another instance of the
// same class... if this were to happen above, in the ObjectsToReplace
// loop, then accessing that other instance would cause an assert in
// UProperty::ContainerPtrToValuePtrInternal() (which appropriatly
// complains that the other instance's type doesn't match because it
// hasn't been replaced yet... that's why we wait until after
// FArchiveReplaceObjectRef to run construction-scripts).
for (FActorReplacementHelper& ReplacementActor : ReplacementActors)
{
ReplacementActor.Finalize(ObjectRemappingHelper.ReplacedObjects);
}
}
SelectedActors->EndBatchSelectOperation();
if (bSelectionChanged)
{
GEditor->NoteSelectionChange();
}
if (GEditor)
{
// Refresh any editors for objects that we've updated components for
for (auto BlueprintAsset : PotentialEditorsForRefreshing)
{
FBlueprintEditor* BlueprintEditor = static_cast<FBlueprintEditor*>(FAssetEditorManager::Get().FindEditorForAsset(BlueprintAsset, /*bFocusIfOpen =*/false));
if (BlueprintEditor)
{
BlueprintEditor->RefreshEditors();
}
}
}
// in the case where we're replacing component instances, we need to make
// sure to re-run their owner's construction scripts
for (AActor* ActorInstance : OwnersToReconstruct)
{
ActorInstance->RerunConstructionScripts();
}
}
void UUnrealEdEngine::SelectNone(bool bNoteSelectionChange, bool bDeselectBSPSurfs, bool WarnAboutManyActors)
{
if( GEdSelectionLock )
{
return;
}
bool bShowProgress = false;
// If there are a lot of actors to process, pop up a warning "are you sure?" box
if( WarnAboutManyActors )
{
int32 NumSelectedActors = GEditor->GetSelectedActorCount();
if( NumSelectedActors >= EditorActorSelectionDefs::MaxActorsToSelectBeforeWarning )
{
bShowProgress = true;
const FText ConfirmText = FText::Format( NSLOCTEXT("UnrealEd", "Warning_ManyActorsForDeselect", "There are {0} selected actors. Are you sure you want to deselect them all?" ), FText::AsNumber(NumSelectedActors) );
FSuppressableWarningDialog::FSetupInfo Info( ConfirmText, NSLOCTEXT( "UnrealEd", "Warning_ManyActors", "Warning: Many Actors" ), "Warning_ManyActors" );
Info.ConfirmText = NSLOCTEXT("ModalDialogs", "ManyActorsForDeselectConfirm", "Continue Deselection");
Info.CancelText = NSLOCTEXT("ModalDialogs", "ManyActorsForDeselectCancel", "Keep Current Selection");
FSuppressableWarningDialog ManyActorsWarning( Info );
if( ManyActorsWarning.ShowModal() == FSuppressableWarningDialog::Cancel )
{
return;
}
}
}
if( bShowProgress )
{
GWarn->BeginSlowTask( LOCTEXT("BeginDeselectingActorsTaskMessage", "Deselecting Actors"), true );
}
// Make a list of selected actors . . .
TArray<AActor*> ActorsToDeselect;
for ( FSelectionIterator It( GetSelectedActorIterator() ) ; It ; ++It )
{
AActor* Actor = static_cast<AActor*>( *It );
checkSlow( Actor->IsA(AActor::StaticClass()) );
ActorsToDeselect.Add( Actor );
}
USelection* SelectedActors = GetSelectedActors();
SelectedActors->BeginBatchSelectOperation();
SelectedActors->Modify();
// . . . and deselect them.
for ( int32 ActorIndex = 0 ; ActorIndex < ActorsToDeselect.Num() ; ++ActorIndex )
{
AActor* Actor = ActorsToDeselect[ ActorIndex ];
SelectActor( Actor, false, false );
}
uint32 NumDeselectSurfaces = 0;
UWorld* World = GWorld;
if( bDeselectBSPSurfs && World )
{
// Unselect all surfaces in all levels.
NumDeselectSurfaces += DeselectAllSurfacesForLevel( World->PersistentLevel );
for( int32 LevelIndex = 0 ; LevelIndex < World->StreamingLevels.Num() ; ++LevelIndex )
{
ULevelStreaming* StreamingLevel = World->StreamingLevels[LevelIndex];
if( StreamingLevel )
{
ULevel* Level = StreamingLevel->GetLoadedLevel();
if ( Level != NULL )
{
NumDeselectSurfaces += DeselectAllSurfacesForLevel( Level );
}
}
}
}
SelectedActors->EndBatchSelectOperation(bNoteSelectionChange);
//prevents clicking on background multiple times spamming selection changes
if (ActorsToDeselect.Num() || NumDeselectSurfaces)
{
GetSelectedActors()->DeselectAll();
if( bNoteSelectionChange )
{
NoteSelectionChange();
}
//whenever selection changes, recompute whether the selection contains a locked actor
bCheckForLockActors = true;
//whenever selection changes, recompute whether the selection contains a world info actor
bCheckForWorldSettingsActors = true;
}
if( bShowProgress )
{
GWarn->EndSlowTask();
}
}
void UUnrealEdEngine::NoteActorMovement()
{
if( !GUndo && !(GEditor->ClickFlags & CF_MOVE_ACTOR) )
{
GEditor->ClickFlags |= CF_MOVE_ACTOR;
const FScopedTransaction Transaction( NSLOCTEXT("UnrealEd", "ActorMovement", "Actor Movement") );
GLevelEditorModeTools().Snapping=0;
AActor* SelectedActor = NULL;
for ( FSelectionIterator It( GetSelectedActorIterator() ) ; It ; ++It )
{
AActor* Actor = static_cast<AActor*>( *It );
checkSlow( Actor->IsA(AActor::StaticClass()) );
SelectedActor = Actor;
break;
}
if( SelectedActor == NULL )
{
USelection* SelectedActors = GetSelectedActors();
SelectedActors->Modify();
SelectActor( GWorld->GetDefaultBrush(), true, true );
}
// Look for an actor that requires snapping.
for ( FSelectionIterator It( GetSelectedActorIterator() ) ; It ; ++It )
{
AActor* Actor = static_cast<AActor*>( *It );
checkSlow( Actor->IsA(AActor::StaticClass()) );
GLevelEditorModeTools().Snapping = 1;
break;
}
TSet<AGroupActor*> GroupActors;
// Modify selected actors.
for ( FSelectionIterator It( GetSelectedActorIterator() ) ; It ; ++It )
{
AActor* Actor = static_cast<AActor*>( *It );
checkSlow( Actor->IsA(AActor::StaticClass()) );
Actor->Modify();
if (GEditor->bGroupingActive)
{
// if this actor is in a group, add the GroupActor into a list to be modified shortly
AGroupActor* ActorLockedRootGroup = AGroupActor::GetRootForActor(Actor, true);
if (ActorLockedRootGroup != nullptr)
{
GroupActors.Add(ActorLockedRootGroup);
}
}
ABrush* Brush = Cast< ABrush >( Actor );
if ( Brush )
{
if( Brush->Brush )
{
Brush->Brush->Polys->Element.ModifyAllItems();
}
}
}
// Modify unique group actors
for (auto* GroupActor : GroupActors)
{
GroupActor->Modify();
}
}
}
void SetLevelVisibility(ULevel* Level, bool bShouldBeVisible, bool bForceLayersVisible)
{
// Nothing to do
if ( Level == NULL )
{
return;
}
// Handle the case of the p-level
// The p-level can't be unloaded, so its actors/BSP should just be temporarily hidden/unhidden
// Also, intentionally do not force layers visible for the p-level
if ( Level->IsPersistentLevel() )
{
//create a transaction so we can undo the visibilty toggle
const FScopedTransaction Transaction( LOCTEXT( "ToggleLevelVisibility", "Toggle Level Visibility" ) );
if ( Level->bIsVisible != bShouldBeVisible )
{
Level->Modify();
}
// Set the visibility of each actor in the p-level
for ( TArray<AActor*>::TIterator PLevelActorIter( Level->Actors ); PLevelActorIter; ++PLevelActorIter )
{
AActor* CurActor = *PLevelActorIter;
if ( CurActor && !FActorEditorUtils::IsABuilderBrush(CurActor) && CurActor->bHiddenEdLevel == bShouldBeVisible )
{
CurActor->Modify();
CurActor->bHiddenEdLevel = !bShouldBeVisible;
CurActor->RegisterAllComponents();
CurActor->MarkComponentsRenderStateDirty();
}
}
// Set the visibility of each BSP surface in the p-level
UModel* CurLevelModel = Level->Model;
if ( CurLevelModel )
{
CurLevelModel->Modify();
for ( TArray<FBspSurf>::TIterator SurfaceIterator( CurLevelModel->Surfs ); SurfaceIterator; ++SurfaceIterator )
{
FBspSurf& CurSurf = *SurfaceIterator;
CurSurf.bHiddenEdLevel = !bShouldBeVisible;
}
}
// Add/remove model components from the scene
for(int32 ComponentIndex = 0; ComponentIndex < Level->ModelComponents.Num(); ComponentIndex++)
{
UModelComponent* CurLevelModelCmp = Level->ModelComponents[ComponentIndex];
if(CurLevelModelCmp)
{
if (bShouldBeVisible && CurLevelModelCmp)
{
CurLevelModelCmp->RegisterComponentWithWorld(Level->OwningWorld);
}
else if (!bShouldBeVisible && CurLevelModelCmp->IsRegistered())
{
CurLevelModelCmp->UnregisterComponent();
}
}
}
FEditorSupportDelegates::RedrawAllViewports.Broadcast();
}
else
{
ULevelStreaming* StreamingLevel = NULL;
if (Level->OwningWorld == NULL || Level->OwningWorld->PersistentLevel != Level )
{
StreamingLevel = FLevelUtils::FindStreamingLevel( Level );
}
// If were hiding a level, lets make sure to close the level transform mode if its the same level currently selected for edit
FEdModeLevel* LevelMode = static_cast<FEdModeLevel*>(GEditorModeTools().GetActiveMode( FBuiltinEditorModes::EM_Level ));
if( LevelMode && LevelMode->IsEditing( StreamingLevel ) )
{
GEditorModeTools().DeactivateMode( FBuiltinEditorModes::EM_Level );
}
//create a transaction so we can undo the visibilty toggle
const FScopedTransaction Transaction( LOCTEXT( "ToggleLevelVisibility", "Toggle Level Visibility" ) );
// Handle the case of a streaming level
if ( StreamingLevel )
{
// We need to set the RF_Transactional to make a streaming level serialize itself. so store the original ones, set the flag, and put the original flags back when done
EObjectFlags cachedFlags = StreamingLevel->GetFlags();
StreamingLevel->SetFlags( RF_Transactional );
StreamingLevel->Modify();
StreamingLevel->SetFlags( cachedFlags );
// Set the visibility state for this streaming level.
StreamingLevel->bShouldBeVisibleInEditor = bShouldBeVisible;
}
if( !bShouldBeVisible )
{
GEditor->Layers->RemoveLevelLayerInformation( Level );
}
// UpdateLevelStreaming sets Level->bIsVisible directly, so we need to make sure it gets saved to the transaction buffer.
if ( Level->bIsVisible != bShouldBeVisible )
{
Level->Modify();
}
if ( StreamingLevel )
{
Level->OwningWorld->FlushLevelStreaming();
// In the Editor we expect this operation will complete in a single call
check(Level->bIsVisible == bShouldBeVisible);
}
else if (Level->OwningWorld != NULL)
{
// In case we level has no associated StreamingLevel, remove or add to world directly
if (bShouldBeVisible)
{
if (!Level->bIsVisible)
{
Level->OwningWorld->AddToWorld(Level);
}
}
else
{
Level->OwningWorld->RemoveFromWorld(Level);
}
// In the Editor we expect this operation will complete in a single call
check(Level->bIsVisible == bShouldBeVisible);
}
if( bShouldBeVisible )
{
GEditor->Layers->AddLevelLayerInformation( Level );
}
// Force the level's layers to be visible, if desired
FEditorSupportDelegates::RedrawAllViewports.Broadcast();
// Iterate over the level's actors, making a list of their layers and unhiding the layers.
TTransArray<AActor*>& Actors = Level->Actors;
for ( int32 ActorIndex = 0 ; ActorIndex < Actors.Num() ; ++ActorIndex )
{
AActor* Actor = Actors[ ActorIndex ];
if ( Actor )
{
bool bModified = false;
if ( bShouldBeVisible && bForceLayersVisible && GEditor->Layers->IsActorValidForLayer( Actor ) )
{
// Make the actor layer visible, if it's not already.
if ( Actor->bHiddenEdLayer )
{
bModified = Actor->Modify();
Actor->bHiddenEdLayer = false;
}
const bool bIsVisible = true;
GEditor->Layers->SetLayersVisibility( Actor->Layers, bIsVisible );
}
// Set the visibility of each actor in the streaming level
if ( !FActorEditorUtils::IsABuilderBrush(Actor) && Actor->bHiddenEdLevel == bShouldBeVisible )
{
if ( !bModified )
{
bModified = Actor->Modify();
}
Actor->bHiddenEdLevel = !bShouldBeVisible;
if (bShouldBeVisible)
{
Actor->ReregisterAllComponents();
}
else
{
Actor->UnregisterAllComponents();
}
}
}
}
}
FEditorDelegates::RefreshLayerBrowser.Broadcast();
// Notify the Scene Outliner, as new Actors may be present in the world.
GEngine->BroadcastLevelActorsChanged();
// If the level is being hidden, deselect actors and surfaces that belong to this level.
if ( !bShouldBeVisible )
{
USelection* SelectedActors = GEditor->GetSelectedActors();
SelectedActors->Modify();
TTransArray<AActor*>& Actors = Level->Actors;
for ( int32 ActorIndex = 0 ; ActorIndex < Actors.Num() ; ++ActorIndex )
{
AActor* Actor = Actors[ ActorIndex ];
if ( Actor )
{
SelectedActors->Deselect( Actor );
}
}
DeselectAllSurfacesInLevel(Level);
// Tell the editor selection status was changed.
GEditor->NoteSelectionChange();
}
Level->bIsVisible = bShouldBeVisible;
}