make Sprite internals private

stepmania/src/Banner.cpp

@@ -52,7 +52,7 @@ void Banner::Update( float fDeltaTime )
 		m_fPercentScrolling += fDeltaTime/2;
 		m_fPercentScrolling -= (int)m_fPercentScrolling;
 
-		const RectF *pTextureRect = m_pTexture->GetTextureCoordRect(0);
+		const RectF *pTextureRect = GetTexture()->GetTextureCoordRect(0);
  
 		float fTexCoords[8] = 
 		{

stepmania/src/GradeDisplay.cpp

@@ -74,7 +74,7 @@ void GradeDisplay::Update( float fDeltaTime )
 
 int GradeDisplay::GetFrameIndex( PlayerNumber pn, Grade g )
 {
-	if( this->m_pTexture->GetID().filename.find("_blank") != string::npos )
+	if( this->GetTexture()->GetID().filename.find("_blank") != string::npos )
 		return 0;
 
 	// either 8, or 16 states
@@ -133,7 +133,7 @@ void GradeDisplay::Scroll()
 
 	int iFrameNo = GetFrameIndex( m_PlayerNumber, m_Grade );
 
-	m_frectDestTexCoords = *m_pTexture->GetTextureCoordRect( iFrameNo );
+	m_frectDestTexCoords = *GetTexture()->GetTextureCoordRect( iFrameNo );
 	m_frectStartTexCoords = m_frectDestTexCoords;
 	m_frectStartTexCoords.top += GRADES_TO_SCROLL * GRADE_FRAME_HEIGHT;
 	m_frectStartTexCoords.bottom += GRADES_TO_SCROLL * GRADE_FRAME_HEIGHT;

stepmania/src/Quad.h

@@ -11,7 +11,7 @@ class Quad : public Sprite
 public:
 	Quad()
 	{
-		m_bDrawIfTextureNull = true; 
+		SetDrawIfTextureNull( true );
 	}	
 
 	void LoadFromNode( const XNode* pNode );

stepmania/src/Sprite.h

@@ -66,6 +66,9 @@ public:
 	virtual void PushSelf( lua_State *L );
 
 protected:
+	void SetDrawIfTextureNull( bool b ) { m_bDrawIfTextureNull = b; }
+
+private:
 	void LoadFromTexture( RageTextureID ID );
 	void LoadStatesFromTexture();