Const, include fixes.

stepmania/src/BGAnimation.h

@@ -39,7 +39,7 @@ public:
 	void GainingFocus( float fRate, bool bRewindMovie, bool bLoop );
 	void LosingFocus();
 
-	float GetLengthSeconds() { return m_fLengthSeconds; }
+	float GetLengthSeconds() const { return m_fLengthSeconds; }
 
 	virtual void HandleCommand( const CStringArray &asTokens );
 	void PlayOffCommand() { PlayCommand("Off"); }

stepmania/src/HelpDisplay.cpp

@@ -34,11 +34,13 @@ HelpDisplay::HelpDisplay()
 }
 
 
-void HelpDisplay::SetTips( CStringArray &arrayTips )
+void HelpDisplay::SetTips( const CStringArray &arrayTips )
 { 
 	m_arrayTips = arrayTips;
 	if( !m_arrayTips.empty() )
 		m_textTip.SetText( m_arrayTips[0] );
+	else
+		m_textTip.SetText( "" );
 }
 
 

stepmania/src/HelpDisplay.h

@@ -11,8 +11,6 @@
 -----------------------------------------------------------------------------
 */
 
-#include "Sprite.h"
-#include "song.h"
 #include "ActorFrame.h"
 #include "BitmapText.h"
 
@@ -21,7 +19,7 @@ class HelpDisplay : public ActorFrame
 {
 public:
 	HelpDisplay();
-	void SetTips( CStringArray &arrayTips );
+	void SetTips( const CStringArray &arrayTips );
 
 	virtual void Update( float fDeltaTime );