move NoteUpcoming message playing into ReceptorArrow

stepmania/src/ReceptorArrow.cpp

@@ -61,6 +61,11 @@ void ReceptorArrow::Step( TapNoteScore score )
 	m_pReceptor->PlayCommand( Capitalize(sJudge) );
 }
 
+void ReceptorArrow::SetNoteUpcoming( bool b )
+{
+	m_pReceptor->PlayCommand( b ? "ShowNoteUpcoming" : "HideNoteUpcoming" );
+}
+
 /*
  * (c) 2001-2004 Ben Nordstrom, Chris Danford
  * All rights reserved.

stepmania/src/ReceptorArrow.h

@@ -20,6 +20,7 @@ public:
 	virtual void Update( float fDeltaTime );
 	void Step( TapNoteScore score );
 	void SetPressed() { m_bIsPressed = true; };
+	void SetNoteUpcoming( bool b );
 private:
 
 	const PlayerState* m_pPlayerState;

stepmania/src/ReceptorArrowRow.cpp

@@ -96,7 +96,8 @@ void ReceptorArrowRow::SetPressed( int iCol )
 
 void ReceptorArrowRow::SetNoteUpcoming( int iCol, bool b )
 {
-	m_ReceptorArrow[iCol]->PlayCommand(b?"ShowNoteUpcoming":"HideNoteUpcoming");
+	ASSERT( iCol >= 0  &&  iCol < (int) m_ReceptorArrow.size() );
+	m_ReceptorArrow[iCol]->SetNoteUpcoming(b);
 }