remove BPMDisplay from gameplay; not used

add SongBPMDisplay; use it if you want that

stepmania/src/BPMDisplay.cpp

@@ -235,6 +235,37 @@ void BPMDisplay::SetFromGameState()
 	NoBPM();
 }
 
+class SongBPMDisplay: public BPMDisplay
+{
+public:
+	SongBPMDisplay();
+	virtual SongBPMDisplay *Copy() const;
+	virtual void Update( float fDeltaTime ); 
+
+private:
+	float m_fLastGameStateBPM;
+
+};
+
+SongBPMDisplay::SongBPMDisplay()
+{
+	m_fLastGameStateBPM = 0;
+}
+
+void SongBPMDisplay::Update( float fDeltaTime ) 
+{
+	float fGameStateBPM = GAMESTATE->m_fCurBPS * 60.0f;
+	if( m_fLastGameStateBPM != fGameStateBPM )
+	{
+		m_fLastGameStateBPM = fGameStateBPM;
+		SetConstantBpm( fGameStateBPM );
+	}
+
+	BPMDisplay::Update( fDeltaTime );
+}
+
+REGISTER_ACTOR_CLASS( SongBPMDisplay )
+
 #include "LuaBinding.h"
 class LunaBPMDisplay: public Luna<BPMDisplay>
 {

stepmania/src/ScreenGameplay.cpp

@@ -719,14 +719,6 @@ void ScreenGameplay::Init()
 	if( g_bShowLyrics )
 		this->AddChild( &m_LyricDisplay );
 
-	m_BPMDisplay.SetName( "BPMDisplay" );
-	m_BPMDisplay.LoadFromFont( THEME->GetPathF("BPMDisplay","bpm") );
-	m_BPMDisplay.Load();
-	ActorUtil::LoadAllCommands( m_BPMDisplay, m_sName );
-	SET_XY( m_BPMDisplay );
-	this->AddChild( &m_BPMDisplay );
-	m_fLastBPS = 0;
-
 	if( !GAMESTATE->m_bDemonstrationOrJukebox )	// only load if we're going to use it
 	{
 		m_Ready.Load( THEME->GetPathB(m_sName,"ready") );
@@ -1831,15 +1823,6 @@ void ScreenGameplay::Update( float fDeltaTime )
 		return;
 	}
 
-	//
-	// update bpm display
-	//
-	if( m_fLastBPS != GAMESTATE->m_fCurBPS && !m_BPMDisplay.GetHidden() )
-	{
-		m_fLastBPS = GAMESTATE->m_fCurBPS;
-		m_BPMDisplay.SetConstantBpm( GAMESTATE->m_fCurBPS * 60.0f );
-	}
-
 	PlayTicks();
 
 	UpdateLights();

stepmania/src/ScreenGameplay.h

@@ -8,7 +8,7 @@
 #include "Transition.h"
 #include "BitmapText.h"
 #include "RageSound.h"
-#include "BPMDisplay.h"
+#include "LocalizedString.h"
 #include "BeginnerHelper.h"
 #include "LyricDisplay.h"
 #include "Attack.h"
@@ -195,9 +195,6 @@ protected:
 	CombinedLifeMeter*	m_pCombinedLifeMeter;
 	Sprite			m_sprCourseSongNumber;
 
-	BPMDisplay		m_BPMDisplay;
-	float			m_fLastBPS;
-
 	Sprite			m_sprScoreFrame;
 	BitmapText		m_textSongOptions;
 	BitmapText		m_Scoreboard[NUM_NSScoreBoardColumn];	// for NSMAN, so we can have a scoreboard