add VisualDelaySeconds

stepmania/src/ArrowEffects.cpp

@@ -134,7 +134,7 @@ void ArrowEffects::Update()
 			fAccelTime /= fDiv;
 			fTotalTime /= fDiv;
 
-			float fBeat = GAMESTATE->m_fSongBeat + fAccelTime;
+			float fBeat = GAMESTATE->m_fSongBeatVisible + fAccelTime;
 			fBeat /= fDiv;
 
 			const bool bEvenBeat = ( int(fBeat) % 2 ) != 0;
@@ -182,7 +182,7 @@ float ArrowEffects::GetYOffset( const PlayerState* pPlayerState, int iCol, float
 	 * entirely time spacing (respectively).  Occasionally, we tween between them. */
 	if( pPlayerState->m_PlayerOptions.GetCurrent().m_fTimeSpacing != 1.0f )
 	{
-		float fSongBeat = GAMESTATE->m_fSongBeat;
+		float fSongBeat = GAMESTATE->m_fSongBeatVisible;
 		float fBeatsUntilStep = fNoteBeat - fSongBeat;
 		float fYOffsetBeatSpacing = fBeatsUntilStep;
 		fYOffset += fYOffsetBeatSpacing * (1-pPlayerState->m_PlayerOptions.GetCurrent().m_fTimeSpacing);
@@ -190,7 +190,7 @@ float ArrowEffects::GetYOffset( const PlayerState* pPlayerState, int iCol, float
 
 	if( pPlayerState->m_PlayerOptions.GetCurrent().m_fTimeSpacing != 0.0f )
 	{
-		float fSongSeconds = GAMESTATE->m_fMusicSeconds;
+		float fSongSeconds = GAMESTATE->m_fMusicSecondsVisible;
 		float fNoteSeconds = GAMESTATE->m_pCurSong->GetElapsedTimeFromBeat(fNoteBeat);
 		float fSecondsUntilStep = fNoteSeconds - fSongSeconds;
 		float fBPM = pPlayerState->m_PlayerOptions.GetCurrent().m_fScrollBPM;
@@ -398,7 +398,7 @@ float ArrowEffects::GetRotation( const PlayerState* pPlayerState, float fNoteBea
 {
 	if( pPlayerState->m_PlayerOptions.GetCurrent().m_fEffects[PlayerOptions::EFFECT_DIZZY] != 0 )
 	{
-		const float fSongBeat = GAMESTATE->m_fSongBeat;
+		const float fSongBeat = GAMESTATE->m_fSongBeatVisible;
 		float fDizzyRotation = fNoteBeat - fSongBeat;
 		fDizzyRotation *= pPlayerState->m_PlayerOptions.GetCurrent().m_fEffects[PlayerOptions::EFFECT_DIZZY];
 		fDizzyRotation = fmodf( fDizzyRotation, 2*PI );
@@ -553,7 +553,7 @@ float ArrowEffects::GetBrightness( const PlayerState* pPlayerState, float fNoteB
 	if( GAMESTATE->IsEditing() )
 		return 1;
 
-	float fSongBeat = GAMESTATE->m_fSongBeat;
+	float fSongBeat = GAMESTATE->m_fSongBeatVisible;
 	float fBeatsUntilStep = fNoteBeat - fSongBeat;
 
 	float fBrightness = SCALE( fBeatsUntilStep, 0, -1, 1.f, 0.f );

stepmania/src/GameState.cpp

@@ -727,6 +727,8 @@ void GameState::ResetMusicStatistics()
 	m_fSongBeatNoOffset = 0;
 	m_fCurBPS = 10;
 	m_bFreeze = false;
+	m_fMusicSecondsVisible = 0;
+	m_fSongBeatVisible = 0;
 	Actor::SetBGMTime( 0, 0 );
 
 
@@ -785,6 +787,7 @@ void GameState::ResetStageStatistics()
 	m_iStageSeed = rand();
 }
 
+static Preference<float> g_fVisualDelaySeconds( "VisualDelaySeconds", 0.0f );
 void GameState::UpdateSongPosition( float fPositionSeconds, const TimingData &timing, const RageTimer &timestamp )
 {
 	if( !timestamp.IsZero() )
@@ -800,6 +803,11 @@ void GameState::UpdateSongPosition( float fPositionSeconds, const TimingData &ti
 	m_fSongBeatNoOffset = timing.GetBeatFromElapsedTimeNoOffset( fPositionSeconds );
 	Actor::SetBGMTime( fPositionSeconds, m_fSongBeatNoOffset );
 
+	m_fMusicSecondsVisible = fPositionSeconds - g_fVisualDelaySeconds.Get();
+	float fThrowAway;
+	bool bThrowAway;
+	timing.GetBeatAndBPSFromElapsedTime( m_fMusicSecondsVisible, m_fSongBeatVisible, fThrowAway, bThrowAway );
+
 //	LOG->Trace( "m_fMusicSeconds = %f, m_fSongBeat = %f, m_fCurBPS = %f, m_bFreeze = %f", m_fMusicSeconds, m_fSongBeat, m_fCurBPS, m_bFreeze );
 }
 

stepmania/src/GameState.h

@@ -172,6 +172,9 @@ public:
 	RageTimer	m_LastBeatUpdate; // time of last m_fSongBeat, etc. update
 	BroadcastOnChange<bool> m_bGameplayLeadIn;
 
+	float		m_fMusicSecondsVisible;
+	float		m_fSongBeatVisible;
+
 	void GetAllUsedNoteSkins( vector<RString> &out ) const;
 
 	static const float MUSIC_SECONDS_INVALID;