move autosync logic out of Player and GameState, into a separate file

stepmania/src/AdjustSync.cpp

@@ -0,0 +1,140 @@
+#include "global.h"
+#include "AdjustSync.h"
+#include "GameState.h"
+#include "song.h"
+#include "PrefsManager.h"
+#include "LocalizedString.h"
+#include "ScreenManager.h"
+
+TimingData *AdjustSync::s_pTimingDataOriginal = NULL;
+float AdjustSync::s_fGlobalOffsetSecondsOriginal = 0;
+int AdjustSync::s_iAutosyncOffsetSample = 0;
+float AdjustSync::s_fAutosyncOffset[SAMPLE_COUNT];
+
+void AdjustSync::ResetOriginalSyncData()
+{
+	if( s_pTimingDataOriginal == NULL )
+		s_pTimingDataOriginal = new TimingData;
+
+	if( GAMESTATE->m_pCurSong )
+		*s_pTimingDataOriginal = GAMESTATE->m_pCurSong->m_Timing;
+	else
+		*s_pTimingDataOriginal = TimingData();
+	s_fGlobalOffsetSecondsOriginal = PREFSMAN->m_fGlobalOffsetSeconds;
+
+	s_iAutosyncOffsetSample = 0;
+}
+
+bool AdjustSync::IsSyncDataChanged()
+{
+	// Can't sync in course modes
+	if( GAMESTATE->IsCourseMode() )
+		return false;
+
+	if( GAMESTATE->m_pCurSong  &&  *s_pTimingDataOriginal != GAMESTATE->m_pCurSong->m_Timing )
+		return true;
+	if( s_fGlobalOffsetSecondsOriginal != PREFSMAN->m_fGlobalOffsetSeconds )
+		return true;
+
+	return false;
+}
+
+void AdjustSync::SaveSyncChanges()
+{
+	if( GAMESTATE->IsCourseMode() )
+		return;
+	if( GAMESTATE->m_pCurSong  &&  *s_pTimingDataOriginal != GAMESTATE->m_pCurSong->m_Timing )
+		GAMESTATE->m_pCurSong->Save();
+	if( s_fGlobalOffsetSecondsOriginal != PREFSMAN->m_fGlobalOffsetSeconds )
+		PREFSMAN->SavePrefsToDisk();
+	ResetOriginalSyncData();
+}
+
+void AdjustSync::RevertSyncChanges()
+{
+	if( GAMESTATE->IsCourseMode() )
+		return;
+	PREFSMAN->m_fGlobalOffsetSeconds.Set( s_fGlobalOffsetSecondsOriginal );
+	GAMESTATE->m_pCurSong->m_Timing = *s_pTimingDataOriginal;
+}
+
+static LocalizedString AUTOSYNC_CORRECTION_APPLIED	( "AdjustSync", "Autosync: Correction applied." );
+static LocalizedString AUTOSYNC_CORRECTION_NOT_APPLIED	( "AdjustSync", "Autosync: Correction NOT applied. Deviation too high." );
+static LocalizedString AUTOSYNC_SONG			( "AdjustSync", "Autosync Song" );
+static LocalizedString AUTOSYNC_MACHINE			( "AdjustSync", "Autosync Machine" );
+void AdjustSync::HandleAutosync( float fNoteOffBySeconds )
+{
+	if( GAMESTATE->m_SongOptions.m_AutosyncType == SongOptions::AUTOSYNC_OFF )
+		return;
+
+	s_fAutosyncOffset[s_iAutosyncOffsetSample] = fNoteOffBySeconds;
+	s_iAutosyncOffsetSample++;
+
+	if( s_iAutosyncOffsetSample < SAMPLE_COUNT ) 
+		return; /* need more */
+
+	const float mean = calc_mean( s_fAutosyncOffset, s_fAutosyncOffset+SAMPLE_COUNT );
+	const float stddev = calc_stddev( s_fAutosyncOffset, s_fAutosyncOffset+SAMPLE_COUNT );
+
+	RString sAutosyncType;
+	switch( GAMESTATE->m_SongOptions.m_AutosyncType )
+	{
+	case SongOptions::AUTOSYNC_SONG:
+		sAutosyncType = AUTOSYNC_SONG;
+		break;
+	case SongOptions::AUTOSYNC_MACHINE:
+		sAutosyncType = AUTOSYNC_MACHINE;
+		break;
+	default:
+		ASSERT(0);
+	}
+
+	if( stddev < .03 && stddev < fabsf(mean) )  // If they stepped with less than .03 error
+	{
+		switch( GAMESTATE->m_SongOptions.m_AutosyncType )
+		{
+		case SongOptions::AUTOSYNC_SONG:
+			GAMESTATE->m_pCurSong->m_Timing.m_fBeat0OffsetInSeconds += mean;
+			break;
+		case SongOptions::AUTOSYNC_MACHINE:
+			PREFSMAN->m_fGlobalOffsetSeconds.Set( PREFSMAN->m_fGlobalOffsetSeconds + mean );
+			break;
+		default:
+			ASSERT(0);
+		}
+
+		SCREENMAN->SystemMessage( AUTOSYNC_CORRECTION_APPLIED.GetValue() );
+	}
+	else
+	{
+		SCREENMAN->SystemMessage( AUTOSYNC_CORRECTION_NOT_APPLIED.GetValue() );
+	}
+
+	s_iAutosyncOffsetSample = 0;
+}
+
+
+/*
+ * (c) 2003-2004 Chris Danford
+ * All rights reserved.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, and/or sell copies of the Software, and to permit persons to
+ * whom the Software is furnished to do so, provided that the above
+ * copyright notice(s) and this permission notice appear in all copies of
+ * the Software and that both the above copyright notice(s) and this
+ * permission notice appear in supporting documentation.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF
+ * THIRD PARTY RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS
+ * INCLUDED IN THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT
+ * OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+ * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+ * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */

stepmania/src/AdjustSync.h

@@ -0,0 +1,48 @@
+#ifndef AdjustSync_H
+#define AdjustSync_H
+
+class TimingData;
+
+const int SAMPLE_COUNT = 32;
+
+class AdjustSync
+{
+public:
+	static TimingData *s_pTimingDataOriginal;
+	static float s_fGlobalOffsetSecondsOriginal;
+	static void ResetOriginalSyncData();
+	static bool IsSyncDataChanged();
+	static void SaveSyncChanges();
+	static void RevertSyncChanges();
+	static void HandleAutosync( float fNoteOffBySeconds );
+
+	static float s_fAutosyncOffset[SAMPLE_COUNT];
+	static int s_iAutosyncOffsetSample;
+};
+
+#endif
+
+/*
+ * (c) 2003-2004 Chris Danford
+ * All rights reserved.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, and/or sell copies of the Software, and to permit persons to
+ * whom the Software is furnished to do so, provided that the above
+ * copyright notice(s) and this permission notice appear in all copies of
+ * the Software and that both the above copyright notice(s) and this
+ * permission notice appear in supporting documentation.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF
+ * THIRD PARTY RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS
+ * INCLUDED IN THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT
+ * OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+ * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+ * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */

stepmania/src/GameState.cpp

@@ -35,6 +35,7 @@
 #include "CommonMetrics.h"
 #include "CharacterManager.h"
 #include "Game.h"
+#include "AdjustSync.h"
 
 #include <ctime>
 #include <set>
@@ -108,8 +109,6 @@ GameState::GameState() :
 
 	m_Environment = new LuaTable;
 
-	m_pTimingDataOriginal = new TimingData;
-
 	/* Don't reset yet; let the first screen do it, so we can
 	 * use PREFSMAN and THEME. */
 //	Reset();
@@ -123,8 +122,6 @@ GameState::~GameState()
 		SAFE_DELETE( m_pMultiPlayerState[p] );
 
 	SAFE_DELETE( m_Environment );
-
-	SAFE_DELETE( m_pTimingDataOriginal );
 }
 
 void GameState::ApplyGameCommand( const RString &sCommand, PlayerNumber pn )
@@ -640,7 +637,7 @@ void GameState::ResetStageStatistics()
 	// get new shuffle patterns if they Back out of gameplay and play again.
 	GAMESTATE->m_iStageSeed = rand();
 
-	ResetOriginalSyncData();
+	AdjustSync::ResetOriginalSyncData();
 }
 
 void GameState::UpdateSongPosition( float fPositionSeconds, const TimingData &timing, const RageTimer &timestamp )
@@ -1742,48 +1739,6 @@ Profile* GameState::GetEditLocalProfile()
 	return PROFILEMAN->GetLocalProfile( m_sEditLocalProfileID );
 }
 
-void GameState::ResetOriginalSyncData()
-{
-	if( m_pCurSong )
-		*m_pTimingDataOriginal = m_pCurSong->m_Timing;
-	else
-		*m_pTimingDataOriginal = TimingData();
-	m_fGlobalOffsetSecondsOriginal = PREFSMAN->m_fGlobalOffsetSeconds;
-}
-
-bool GameState::IsSyncDataChanged()
-{
-	// Can't sync in course modes
-	if( IsCourseMode() )
-		return false;
-
-	if( m_pCurSong  &&  *m_pTimingDataOriginal != m_pCurSong->m_Timing )
-		return true;
-	if( m_fGlobalOffsetSecondsOriginal != PREFSMAN->m_fGlobalOffsetSeconds )
-		return true;
-
-	return false;
-}
-
-void GameState::SaveSyncChanges()
-{
-	if( IsCourseMode() )
-		return;
-	if( m_pCurSong  &&  *m_pTimingDataOriginal != m_pCurSong->m_Timing )
-		GAMESTATE->m_pCurSong->Save();
-	if( m_fGlobalOffsetSecondsOriginal != PREFSMAN->m_fGlobalOffsetSeconds )
-		PREFSMAN->SavePrefsToDisk();
-	ResetOriginalSyncData();
-}
-
-void GameState::RevertSyncChanges()
-{
-	if( IsCourseMode() )
-		return;
-	PREFSMAN->m_fGlobalOffsetSeconds.Set( GAMESTATE->m_fGlobalOffsetSecondsOriginal );
-	GAMESTATE->m_pCurSong->m_Timing = *GAMESTATE->m_pTimingDataOriginal;
-}
-
 
 // lua start
 #include "LuaBinding.h"

stepmania/src/GameState.h

@@ -292,14 +292,6 @@ public:
 	float GetGoalPercentComplete( PlayerNumber pn );
 	bool IsGoalComplete( PlayerNumber pn )	{ return GetGoalPercentComplete( pn ) >= 1; }
 
-	// Sync changes stuff
-	TimingData *m_pTimingDataOriginal;
-	float m_fGlobalOffsetSecondsOriginal;
-	void ResetOriginalSyncData();
-	bool IsSyncDataChanged();
-	void SaveSyncChanges();
-	void RevertSyncChanges();
-
 	// Lua
 	void PushSelf( lua_State *L );
 };

stepmania/src/Player.cpp

@@ -43,6 +43,7 @@
 #include "Steps.h"
 #include "GameCommand.h"
 #include "LocalizedString.h"
+#include "AdjustSync.h"
 
 RString COMBO_X_NAME( size_t p, size_t both_sides )			{ return "ComboXOffset" + (both_sides ? RString("BothSides") : ssprintf("OneSideP%d",int(p+1)) ); }
 RString ATTACK_DISPLAY_X_NAME( size_t p, size_t both_sides ){ return "AttackDisplayXOffset" + (both_sides ? RString("BothSides") : ssprintf("OneSideP%d",int(p+1)) ); }
@@ -81,7 +82,6 @@ Player::Player( bool bShowNoteField, bool bShowJudgment )
 	m_pInventory = NULL;
 	
 	m_bPaused = false;
-	m_iOffsetSample = 0;
 
 	m_pJudgment = NULL;
 	if( bShowJudgment )
@@ -117,8 +117,6 @@ Player::Player( bool bShowNoteField, bool bShowJudgment )
 	{
 		m_pNoteField = new NoteField;
 	}
-
-	this->SubscribeToMessage( Message_AutosyncChanged );
 }
 
 Player::~Player()
@@ -1242,7 +1240,7 @@ void Player::HandleStep( int col, const RageTimer &tm, bool bHeld )
 		}
 
 		if( m_pPlayerState->m_PlayerController == PC_HUMAN && score >= TNS_W3 ) 
-			HandleAutosync( fNoteOffset );
+			AdjustSync::HandleAutosync( fNoteOffset );
 
 		// Do game-specific and mode-specific score mapping.
 		score = GAMESTATE->GetCurrentGame()->MapTapNoteScore( score );
@@ -1325,61 +1323,6 @@ void Player::HandleStep( int col, const RageTimer &tm, bool bHeld )
 	}
 }
 
-static LocalizedString AUTOSYNC_CORRECTION_APPLIED		( "Player", "Autosync: Correction applied." );
-static LocalizedString AUTOSYNC_CORRECTION_NOT_APPLIED	( "Player", "Autosync: Correction NOT applied. Deviation too high." );
-static LocalizedString AUTOSYNC_SONG					( "Player", "Autosync Song" );
-static LocalizedString AUTOSYNC_MACHINE					( "Player", "Autosync Machine" );
-void Player::HandleAutosync(float fNoteOffset)
-{
-	if( GAMESTATE->m_SongOptions.m_AutosyncType == SongOptions::AUTOSYNC_OFF )
-		return;
-
-	m_fOffset[m_iOffsetSample] = fNoteOffset;
-	m_iOffsetSample++;
-
-	if( m_iOffsetSample < SAMPLE_COUNT ) 
-		return; /* need more */
-
-	const float mean = calc_mean( m_fOffset, m_fOffset+SAMPLE_COUNT );
-	const float stddev = calc_stddev( m_fOffset, m_fOffset+SAMPLE_COUNT );
-
-	RString sAutosyncType;
-	switch( GAMESTATE->m_SongOptions.m_AutosyncType )
-	{
-	case SongOptions::AUTOSYNC_SONG:
-		sAutosyncType = AUTOSYNC_SONG;
-		break;
-	case SongOptions::AUTOSYNC_MACHINE:
-		sAutosyncType = AUTOSYNC_MACHINE;
-		break;
-	default:
-		ASSERT(0);
-	}
-
-	if( stddev < .03 && stddev < fabsf(mean) )  // If they stepped with less than .03 error
-	{
-		switch( GAMESTATE->m_SongOptions.m_AutosyncType )
-		{
-		case SongOptions::AUTOSYNC_SONG:
-			GAMESTATE->m_pCurSong->m_Timing.m_fBeat0OffsetInSeconds += mean;
-			break;
-		case SongOptions::AUTOSYNC_MACHINE:
-			PREFSMAN->m_fGlobalOffsetSeconds.Set( PREFSMAN->m_fGlobalOffsetSeconds + mean );
-			break;
-		default:
-			ASSERT(0);
-		}
-
-		SCREENMAN->SystemMessage( AUTOSYNC_CORRECTION_APPLIED.GetValue() );
-	}
-	else
-	{
-		SCREENMAN->SystemMessage( AUTOSYNC_CORRECTION_NOT_APPLIED.GetValue() );
-	}
-
-	m_iOffsetSample = 0;
-}
-
 void Player::DisplayJudgedRow( int iIndexThatWasSteppedOn, TapNoteScore score, int iTrack )
 {
 	TapNote tn = m_NoteData.GetTapNote(iTrack, iIndexThatWasSteppedOn);
@@ -1860,13 +1803,6 @@ bool Player::IsPlayingBeginner() const
 	return pSteps && pSteps->GetDifficulty() == DIFFICULTY_BEGINNER;
 }
 
-void Player::HandleMessage( const RString& sMessage )
-{
-	// Reset autosync samples when toggling
-	if( sMessage == MessageToString(Message_AutosyncChanged) )
-		m_iOffsetSample = 0;
-}
-
 
 /*
  * (c) 2001-2004 Chris Danford

stepmania/src/Player.h

@@ -22,8 +22,6 @@ class RageTimer;
 class NoteField;
 class PlayerStageStats;
 
-#define	SAMPLE_COUNT	32
-
 class Player: public ActorFrame
 {
 public:
@@ -33,7 +31,6 @@ public:
 	virtual void Update( float fDeltaTime );
 	virtual void ProcessMessages( float fDeltaTime );
 	virtual void DrawPrimitives();
-	virtual void HandleMessage( const RString& sMessage );
 
 	void Init( 
 		const RString &sType,
@@ -70,7 +67,6 @@ protected:
 	void OnRowCompletelyJudged( int iStepIndex );
 	void HandleTapRowScore( unsigned row );
 	void HandleHoldScore( HoldNoteScore holdScore, TapNoteScore tapScore );
-	void HandleAutosync(float fNoteOffset);
 	void DrawTapJudgments();
 	void DrawHoldJudgments();
 
@@ -86,8 +82,6 @@ protected:
 	float			m_fNoteFieldHeight;
 
 	bool			m_bPaused;
-	float			m_fOffset[SAMPLE_COUNT]; // for AutoSync
-	int			m_iOffsetSample;
 
 	NoteField		*m_pNoteField;
 

stepmania/src/ScreenEdit.cpp

@@ -33,6 +33,7 @@
 #include "InputEventPlus.h"
 #include "NotesWriterSM.h"
 #include "LocalizedString.h"
+#include "AdjustSync.h"
 
 static Preference<float> g_iDefaultRecordLength( "DefaultRecordLength", 4 );
 static Preference<bool> g_bEditorShowBGChangesPlay( "EditorShowBGChangesPlay", false );
@@ -1987,7 +1988,7 @@ void ScreenEdit::TransitionEditState( EditState em )
 		break;
 
 	case STATE_PLAYING:
-		if( GAMESTATE->IsSyncDataChanged() )
+		if( AdjustSync::IsSyncDataChanged() )
 			ScreenSaveSync::PromptSaveSync();
 		break;
 
@@ -2048,7 +2049,7 @@ void ScreenEdit::TransitionEditState( EditState em )
 	case STATE_PLAYING:
 	case STATE_RECORDING:
 	{
-		GAMESTATE->ResetOriginalSyncData();
+		AdjustSync::ResetOriginalSyncData();
 
 		/* Give a 1 second lead-in.  If we're loading Player, this must be done first. */
 		float fSeconds = m_pSong->m_Timing.GetElapsedTimeFromBeat( NoteRowToBeat(m_iStartPlayingAt) ) - 1;

stepmania/src/ScreenGameplay.cpp

@@ -53,6 +53,7 @@
 #include "Background.h"
 #include "Foreground.h"
 #include "ScreenSaveSync.h"
+#include "AdjustSync.h"
 
 //
 // Defines
@@ -2504,7 +2505,7 @@ void ScreenGameplay::HandleScreenMessage( const ScreenMessage SM )
 
 		GAMESTATE->CancelStage();
 
-		if( GAMESTATE->IsSyncDataChanged() )
+		if( AdjustSync::IsSyncDataChanged() )
 			ScreenSaveSync::PromptSaveSync( SM_GoToPrevScreen );
 		else
 			HandleScreenMessage( SM_GoToPrevScreen );
@@ -2515,7 +2516,7 @@ void ScreenGameplay::HandleScreenMessage( const ScreenMessage SM )
 		StageFinished( false );
 		//SaveRecordedResults();
 
-		if( GAMESTATE->IsSyncDataChanged() )
+		if( AdjustSync::IsSyncDataChanged() )
 			ScreenSaveSync::PromptSaveSync( SM_GoToNextScreen );
 		else
 			HandleScreenMessage( SM_GoToNextScreen );

stepmania/src/ScreenGameplaySyncMachine.cpp

@@ -4,6 +4,7 @@
 #include "GameState.h"
 #include "GameManager.h"
 #include "PrefsManager.h"
+#include "AdjustSync.h"
 
 REGISTER_SCREEN_CLASS( ScreenGameplaySyncMachine );
 
@@ -11,7 +12,7 @@ void ScreenGameplaySyncMachine::Init()
 {
 	GAMESTATE->m_PlayMode.Set( PLAY_MODE_REGULAR );
 	GAMESTATE->m_pCurStyle.Set( GAMEMAN->GetHowToPlayStyleForGame(GAMESTATE->m_pCurGame) );
-	GAMESTATE->ResetOriginalSyncData();
+	AdjustSync::ResetOriginalSyncData();
 	
 	SMLoader ld;
 	RString sFile = THEME->GetPathO("ScreenGameplaySyncMachine","music.sm");

stepmania/src/ScreenJukebox.cpp

@@ -19,6 +19,7 @@
 #include "CommonMetrics.h"
 #include "PrefsManager.h"
 #include "InputEventPlus.h"
+#include "AdjustSync.h"
 
 #define SHOW_COURSE_MODIFIERS_PROBABILITY	THEME->GetMetricF(m_sName,"ShowCourseModifiersProbability")
 
@@ -95,7 +96,7 @@ void ScreenJukebox::SetSong()
 		// Found something we can use!
 		GAMESTATE->m_pCurSong.Set( pSong );
 		// We just changed the song. Reset the original sync data.
-		GAMESTATE->ResetOriginalSyncData();
+		AdjustSync::ResetOriginalSyncData();
 		FOREACH_PlayerNumber( p )
 			GAMESTATE->m_pCurSteps[p].Set( pSteps );
 		

stepmania/src/ScreenSaveSync.cpp

@@ -4,7 +4,7 @@
 #include "song.h"
 #include "PrefsManager.h"
 #include "LocalizedString.h"
-
+#include "AdjustSync.h"
 
 static LocalizedString EARLIER					("ScreenSaveSync","earlier");
 static LocalizedString LATER					("ScreenSaveSync","later");
@@ -20,7 +20,7 @@ static RString GetPromptText()
 	RString s;
 
 	{
-		float fOld = GAMESTATE->m_fGlobalOffsetSecondsOriginal;
+		float fOld = AdjustSync::s_fGlobalOffsetSecondsOriginal;
 		float fNew = PREFSMAN->m_fGlobalOffsetSeconds;
 		float fDelta = fNew - fOld;
 
@@ -40,7 +40,7 @@ static RString GetPromptText()
 	if( GAMESTATE->m_pCurSong.Get() )
 	{
 		{
-			float fOld = GAMESTATE->m_pTimingDataOriginal->m_fBeat0OffsetInSeconds;
+			float fOld = AdjustSync::s_pTimingDataOriginal->m_fBeat0OffsetInSeconds;
 			float fNew = GAMESTATE->m_pCurSong->m_Timing.m_fBeat0OffsetInSeconds;
 			float fDelta = fNew - fOld;
 
@@ -57,7 +57,7 @@ static RString GetPromptText()
 
 		for( unsigned i=0; i<GAMESTATE->m_pCurSong->m_Timing.m_BPMSegments.size(); i++ )
 		{
-			float fOld = GAMESTATE->m_pTimingDataOriginal->m_BPMSegments[i].m_fBPS;
+			float fOld = AdjustSync::s_pTimingDataOriginal->m_BPMSegments[i].m_fBPS;
 			float fNew = GAMESTATE->m_pCurSong->m_Timing.m_BPMSegments[i].m_fBPS;
 			float fDelta = fNew - fOld;
 
@@ -74,7 +74,7 @@ static RString GetPromptText()
 
 		for( unsigned i=0; i<GAMESTATE->m_pCurSong->m_Timing.m_StopSegments.size(); i++ )
 		{
-			float fOld = GAMESTATE->m_pTimingDataOriginal->m_StopSegments[i].m_fStopSeconds;
+			float fOld = AdjustSync::s_pTimingDataOriginal->m_StopSegments[i].m_fStopSeconds;
 			float fNew = GAMESTATE->m_pCurSong->m_Timing.m_StopSegments[i].m_fStopSeconds;
 			float fDelta = fNew - fOld;
 
@@ -109,12 +109,12 @@ static RString GetPromptText()
 			
 static void SaveSyncChanges( void* pThrowAway )
 {
-	GAMESTATE->SaveSyncChanges();
+	AdjustSync::SaveSyncChanges();
 }
 
 static void RevertSyncChanges( void* pThrowAway )
 {
-	GAMESTATE->RevertSyncChanges();
+	AdjustSync::RevertSyncChanges();
 }
 
 void ScreenSaveSync::Init()

stepmania/src/ScreenSyncOverlay.cpp

@@ -7,6 +7,7 @@
 #include "PrefsManager.h"
 #include "InputEventPlus.h"
 #include "LocalizedString.h"
+#include "AdjustSync.h"
 
 static bool IsGameplay()
 {
@@ -103,7 +104,7 @@ void ScreenSyncOverlay::UpdateText()
 	if( GAMESTATE->m_pCurSong != NULL  &&  !GAMESTATE->IsCourseMode() )	// sync controls available
 	{
 		{
-			float fOld = GAMESTATE->m_fGlobalOffsetSecondsOriginal;
+			float fOld = AdjustSync::s_fGlobalOffsetSecondsOriginal;
 			float fNew = PREFSMAN->m_fGlobalOffsetSeconds;
 			float fDelta = fNew - fOld;
 
@@ -118,7 +119,7 @@ void ScreenSyncOverlay::UpdateText()
 		}
 
 		{
-			float fOld = GAMESTATE->m_pTimingDataOriginal->m_fBeat0OffsetInSeconds;
+			float fOld = AdjustSync::s_pTimingDataOriginal->m_fBeat0OffsetInSeconds;
 			float fNew = GAMESTATE->m_pCurSong->m_Timing.m_fBeat0OffsetInSeconds;
 			float fDelta = fNew - fOld;
 
@@ -132,11 +133,11 @@ void ScreenSyncOverlay::UpdateText()
 			}
 		}
 
-		ASSERT( GAMESTATE->m_pTimingDataOriginal->m_BPMSegments.size() == GAMESTATE->m_pCurSong->m_Timing.m_BPMSegments.size() );
+		ASSERT( AdjustSync::s_pTimingDataOriginal->m_BPMSegments.size() == GAMESTATE->m_pCurSong->m_Timing.m_BPMSegments.size() );
 
 		for( unsigned i=0; i<GAMESTATE->m_pCurSong->m_Timing.m_BPMSegments.size(); i++ )
 		{
-			float fOldBpm = GAMESTATE->m_pTimingDataOriginal->m_BPMSegments[i].m_fBPS;
+			float fOldBpm = AdjustSync::s_pTimingDataOriginal->m_BPMSegments[i].m_fBPS;
 			float fNewBpm = GAMESTATE->m_pCurSong->m_Timing.m_BPMSegments[i].m_fBPS;
 			float fDelta = fNewBpm - fOldBpm;
 
@@ -203,7 +204,7 @@ bool ScreenSyncOverlay::OverlayInput( const InputEventPlus &input )
 	{
 	case RevertSyncChanges:
 		SCREENMAN->SystemMessage( SYNC_CHANGES_REVERTED );
-		GAMESTATE->RevertSyncChanges();
+		AdjustSync::RevertSyncChanges();
 		break;
 	case ChangeSongBPM:
 		{