void FMovieSceneSequenceInstance::RefreshInstance( IMovieScenePlayer& Player )
{
if(MovieSceneSequence.IsValid())
{
UMovieScene* MovieScene = MovieSceneSequence->GetMovieScene();
TimeRange = MovieScene->GetPlaybackRange();
UMovieSceneTrack* CameraCutTrack = MovieScene->GetCameraCutTrack();
if (CameraCutTrack != nullptr)
{
FMovieSceneInstanceMap CameraCutTrackInstanceMap;
if (CameraCutTrackInstance.IsValid())
{
CameraCutTrackInstanceMap.Add(CameraCutTrack, CameraCutTrackInstance);
}
TArray<TWeakObjectPtr<UObject>> Objects;
TArray<UMovieSceneTrack*> Tracks;
Tracks.Add(CameraCutTrack);
RefreshInstanceMap(Tracks, Objects, CameraCutTrackInstanceMap, Player);
CameraCutTrackInstance = CameraCutTrackInstanceMap.FindRef(CameraCutTrack);
}
else if(CameraCutTrackInstance.IsValid())
{
CameraCutTrackInstance->ClearInstance(Player, *this);
CameraCutTrackInstance.Reset();
}
// Get all the master tracks and create instances for them if needed
const TArray<UMovieSceneTrack*>& MasterTracks = MovieScene->GetMasterTracks();
TArray<TWeakObjectPtr<UObject>> Objects;
RefreshInstanceMap( MasterTracks, Objects, MasterTrackInstances, Player );
TSet< FGuid > FoundObjectBindings;
// Get all tracks for each object binding and create instances for them if needed
const TArray<FMovieSceneBinding>& ObjectBindings = MovieScene->GetBindings();
for( int32 BindingIndex = 0; BindingIndex < ObjectBindings.Num(); ++BindingIndex )
{
const FMovieSceneBinding& ObjectBinding = ObjectBindings[BindingIndex];
// Create an instance for this object binding
FMovieSceneObjectBindingInstance& BindingInstance = ObjectBindingInstances.FindOrAdd( ObjectBinding.GetObjectGuid() );
BindingInstance.ObjectGuid = ObjectBinding.GetObjectGuid();
FoundObjectBindings.Add( ObjectBinding.GetObjectGuid() );
// Populate the runtime objects for this instance of the binding.
// @todo sequencer: SubSequences: We need to know which actors were removed and which actors were added so we know which saved actor state to restore/create
BindingInstance.RuntimeObjects.Empty();
Player.GetRuntimeObjects( SharedThis( this ), BindingInstance.ObjectGuid, BindingInstance.RuntimeObjects );
// Refresh the instance's tracks
const TArray<UMovieSceneTrack*>& Tracks = ObjectBinding.GetTracks();
RefreshInstanceMap( Tracks, BindingInstance.RuntimeObjects, BindingInstance.TrackInstances, Player );
}
IMovieSceneSpawnRegister& SpawnRegister = Player.GetSpawnRegister();
// Remove object binding instances which are no longer bound
TMap<FGuid, FMovieSceneObjectBindingInstance>::TIterator It = ObjectBindingInstances.CreateIterator();
for( ; It; ++It )
{
if( !FoundObjectBindings.Contains( It.Key() ) )
{
SpawnRegister.DestroySpawnedObject(It.Key(), *this, Player);
// The instance no longer is bound to an existing guid
It.RemoveCurrent();
}
}
}
}
void FSequencerNodeTree::Update()
{
// @todo Sequencer - This update pass is too aggressive. Some nodes may still be valid
Empty();
UMovieScene* MovieScene = Sequencer.GetFocusedMovieSceneSequence()->GetMovieScene();
TArray< TSharedRef<FSequencerDisplayNode> > NewRootNodes;
// Get the master tracks so we can get sections from them
const TArray<UMovieSceneTrack*>& MasterTracks = MovieScene->GetMasterTracks();
for( UMovieSceneTrack* Track : MasterTracks )
{
UMovieSceneTrack& TrackRef = *Track;
TSharedRef<FTrackNode> SectionNode = MakeShareable( new FTrackNode( TrackRef.GetTrackName(), TrackRef, NULL, *this ) );
NewRootNodes.Add( SectionNode );
MakeSectionInterfaces( TrackRef, SectionNode );
SectionNode->PinNode();
}
const TArray<FMovieSceneBinding>& Bindings = MovieScene->GetBindings();
TMap<FGuid, const FMovieSceneBinding*> GuidToBindingMap;
for (const FMovieSceneBinding& Binding : Bindings)
{
GuidToBindingMap.Add(Binding.GetObjectGuid(), &Binding);
}
// Make nodes for all object bindings
TArray< TSharedRef<FSequencerDisplayNode> > NewObjectNodes;
for( const FMovieSceneBinding& Binding : Bindings )
{
TSharedRef<FObjectBindingNode> ObjectBindingNode = AddObjectBinding( Binding.GetName(), Binding.GetObjectGuid(), GuidToBindingMap, NewObjectNodes );
const TArray<UMovieSceneTrack*>& Tracks = Binding.GetTracks();
for( UMovieSceneTrack* Track : Tracks )
{
UMovieSceneTrack& TrackRef = *Track;
FName SectionName = TrackRef.GetTrackName();
check( SectionName != NAME_None );
TSharedRef<FTrackNode> SectionAreaNode = ObjectBindingNode->AddSectionAreaNode( SectionName, TrackRef );
MakeSectionInterfaces( TrackRef, SectionAreaNode );
}
}
struct FObjectNodeSorter
{
bool operator()( const TSharedRef<FSequencerDisplayNode>& A, const TSharedRef<FSequencerDisplayNode>& B ) const
{
if (A->GetType() == ESequencerNode::Object && B->GetType() != ESequencerNode::Object)
{
return true;
}
if (A->GetType() != ESequencerNode::Object && B->GetType() == ESequencerNode::Object)
{
return false;
}
return A->GetDisplayName().ToString() < B->GetDisplayName().ToString();
}
};
NewObjectNodes.Sort( FObjectNodeSorter() );
for (TSharedRef<FSequencerDisplayNode> NewObjectNode : NewObjectNodes)
{
NewObjectNode->SortChildNodes(FObjectNodeSorter());
}
NewRootNodes.Append(NewObjectNodes);
// Look for a shot track. It will always come first if it exists
UMovieSceneTrack* ShotTrack = MovieScene->GetShotTrack();
if( ShotTrack )
{
TSharedRef<FTrackNode> SectionNode = MakeShareable( new FTrackNode( ShotTrack->GetTrackName(), *ShotTrack, NULL, *this ) );
// Shot track always comes first
RootNodes.Add( SectionNode );
MakeSectionInterfaces( *ShotTrack, SectionNode );
SectionNode->PinNode();
}
// Add all other nodes after the shot track
RootNodes.Append( NewRootNodes );
// Set up virtual offsets, and expansion states
float VerticalOffset = 0.f;
for (auto& Node : RootNodes)
{
Node->Traverse_ParentFirst([&](FSequencerDisplayNode& InNode){
float VerticalTop = VerticalOffset;
VerticalOffset += InNode.GetNodeHeight() + InNode.GetNodePadding().Combined();
InNode.Initialize(VerticalTop, VerticalOffset);
return true;
});
}
// Re-filter the tree after updating
// @todo Sequencer - Newly added sections may need to be visible even when there is a filter
FilterNodes( FilterString );
}