fix Actor depending on GAMESTATE

stepmania/src/Actor.cpp

@@ -8,7 +8,7 @@
 #include "RageLog.h"
 #include "arch/Dialog/Dialog.h"
 
-#include "GameState.h" /* XXX: ugly dependency */
+static float g_fCurrentBGMTime = 0;
 
 /* This is Reset instead of Init since many derived classes have Init() functions
  * that shouldn't change the position of the actor. */
@@ -59,6 +59,11 @@ Actor::Actor()
 	m_bFirstUpdate = true;
 }
 
+void Actor::SetBGMTime( float fTime )
+{
+	g_fCurrentBGMTime = fTime;
+}
+
 void Actor::Draw()
 {
 	if( m_bHidden )
@@ -324,7 +329,7 @@ void Actor::Update( float fDeltaTime )
 			break;
 
 		case CLOCK_BGM:
-			m_fSecsIntoEffect = GAMESTATE->m_fSongBeat;
+			m_fSecsIntoEffect = g_fCurrentBGMTime;
 			break;
 		}