add tip to MeterDisplay

stepmania/src/MeterDisplay.cpp

@@ -15,15 +15,18 @@
 MeterDisplay::MeterDisplay()
 {
 	this->AddChild( &m_sprStream );
+	this->AddChild( &m_sprTip );
 }
 
-void MeterDisplay::Load( CString sStreamPath, float fStreamWidth )
+void MeterDisplay::Load( CString sStreamPath, float fStreamWidth, CString sTipPath )
 {
 	m_fStreamWidth = fStreamWidth;
 
 	m_sprStream.Load( sStreamPath );
 	m_sprStream.SetZoomX( fStreamWidth / m_sprStream.GetUnzoomedWidth() );
 
+	m_sprTip.Load( sTipPath );
+
 	SetPercent( 0.5f );
 }
 
@@ -32,4 +35,6 @@ void MeterDisplay::SetPercent( float fPercent )
 	ASSERT( fPercent >= 0 && fPercent <= 1 );
 
 	m_sprStream.SetCropRight( 1-fPercent );
+
+	m_sprTip.SetX( SCALE(fPercent, 0.f, 1.f, -m_fStreamWidth/2, m_fStreamWidth/2) );
 }

stepmania/src/MeterDisplay.h

@@ -20,7 +20,7 @@ class MeterDisplay : public ActorFrame
 {
 public:
 	MeterDisplay();
-	void Load( CString sStreamPath, float fStreamWidth );
+	void Load( CString sStreamPath, float fStreamWidth, CString sTipPath = "" );
 
 	void SetPercent( float fPercent );
 
@@ -28,6 +28,7 @@ private:
 	float	m_fStreamWidth;
 	float	m_fPercent;
 	Sprite  m_sprStream;
+	Sprite  m_sprTip;
 };
 
 #endif

stepmania/src/ScreenGameplay.cpp

@@ -422,7 +422,7 @@ ScreenGameplay::ScreenGameplay( CString sName, bool bDemonstration ) : Screen("S
 	this->AddChild( &m_textSongTitle );
 
 
-	m_meterSongPosition.Load( THEME->GetPathToG("ScreenGameplay song position meter"), SONG_POSITION_METER_WIDTH );
+	m_meterSongPosition.Load( THEME->GetPathToG("ScreenGameplay song position meter"), SONG_POSITION_METER_WIDTH, THEME->GetPathToG("ScreenGameplay song position tip") );
 	m_meterSongPosition.SetName( "SongPositionMeter" );
 	SET_XY( m_meterSongPosition );
 	this->AddChild( &m_meterSongPosition );