ScreenWithMenuElements::BeginScreen: start tweening, and also reset

any previous transitions.

stepmania/src/ScreenWithMenuElements.cpp

@@ -139,9 +139,18 @@ void ScreenWithMenuElements::Init()
 	this->AddChild( &m_Cancel );
 
 	this->SortByDrawOrder();
+}
+
+void ScreenWithMenuElements::BeginScreen()
+{
+	m_In.Reset();
+	m_Out.Reset();
+	m_Cancel.Reset();
 
 	TweenOnScreen();
 	m_In.StartTransitioning( SM_DoneFadingIn );
+
+	Screen::BeginScreen();
 }
 
 void ScreenWithMenuElements::TweenOnScreen()

stepmania/src/ScreenWithMenuElements.h

@@ -17,6 +17,7 @@ class ScreenWithMenuElements : public Screen
 public:
 	ScreenWithMenuElements( CString sName );
 	virtual void Init();
+	virtual void BeginScreen();
 	virtual ~ScreenWithMenuElements();
 
 	void Update( float fDeltaTime );