Composite NoteData for when one NoteData represents multiple NoteDatas.

stepmania/src/NoteData.cpp

@@ -21,6 +21,7 @@ NoteData::NoteData()
 
 void NoteData::Init()
 {
+	m_bComposite = false;
 	ClearAll();
 	m_TapNotes = vector<TrackMap>();	// ensure that the memory is freed
 }

stepmania/src/NoteData.h

@@ -30,6 +30,8 @@ private:
 	// There's no point in inserting empty notes into the map.
 	// Any blank space in the map is defined to be empty.
 	vector<TrackMap>	m_TapNotes;
+	// This NoteData comprises multiple NoteDatas.
+	bool			m_bComposite;
 
 public:
 	NoteData();
@@ -38,6 +40,8 @@ public:
 	
 	int GetNumTracks() const { return m_TapNotes.size(); }
 	void SetNumTracks( int iNewNumTracks );
+	bool IsComposite() const { return m_bComposite; }
+	void SetComposite( bool b ) { m_bComposite = b; }
 
 	/* Return the note at the given track and row.  Row may be out of
 	 * range; pretend the song goes on with TAP_EMPTYs indefinitely. */