Implement preview music properly as a new optional tag in the ssc file. Changed ScreenManager to emit an error instead of asserting if a screen attempts to use SetNewScreen inside an InitCommand. Changed decorations layer to be a proper child instead of stripping away the ActorFrame.

src/NotesLoaderSSC.cpp

@@ -426,6 +426,11 @@ bool SSCLoader::LoadFromSimfile( const RString &sPath, Song &out, bool bFromCach
 					out.m_sMusicFile = sParams[1];
 				}
 
+				else if(sValueName == "PREVIEW")
+				{
+					out.m_PreviewFile= sParams[1];
+				}
+
 				else if( sValueName=="INSTRUMENTTRACK" )
 				{
 					SMLoader::ProcessInstrumentTracks( out, sParams[1] );

src/NotesWriterSSC.cpp

@@ -230,6 +230,10 @@ static void WriteGlobalTags( RageFile &f, const Song &out )
 	f.PutLine( ssprintf( "#LYRICSPATH:%s;", SmEscape(out.m_sLyricsFile).c_str() ) );
 	f.PutLine( ssprintf( "#CDTITLE:%s;", SmEscape(out.m_sCDTitleFile).c_str() ) );
 	f.PutLine( ssprintf( "#MUSIC:%s;", SmEscape(out.m_sMusicFile).c_str() ) );
+	if(!out.m_PreviewFile.empty())
+	{
+		f.PutLine(ssprintf("#PREVIEW:%s;", SmEscape(out.m_PreviewFile).c_str()));
+	}
 
 	{
 		vector<RString> vs = out.GetInstrumentTracksToVectorString();

src/ScreenEdit.cpp

@@ -952,6 +952,9 @@ static MenuDef g_SongInformation(
 	MenuRowDef(ScreenEdit::credit,
 		"Credit",
 		true, EditMode_Practice, true, true, 0, NULL ),
+	MenuRowDef(ScreenEdit::preview,
+		"Preview",
+		true, EditMode_Full, true, true, 0, NULL ),
 	MenuRowDef(ScreenEdit::main_title_transliteration,	
 		"Main title transliteration",
 		true, EditMode_Practice, true, true, 0, NULL ),
@@ -1477,10 +1480,10 @@ void ScreenEdit::PlayPreviewMusic()
 {
 	SOUND->StopMusic();
 	SOUND->PlayMusic( 
-		m_pSong->GetMusicPath(), 
+		m_pSong->GetPreviewMusicPath(),
 		NULL,
 		false,
-		m_pSong->m_fMusicSampleStartSeconds,
+		m_pSong->GetPreviewStartSeconds(),
 		m_pSong->m_fMusicSampleLengthSeconds,
 		FADE_IN_PREVIEW,
 		FADE_OUT_PREVIEW );
@@ -4318,6 +4321,12 @@ static void ChangeCredit( const RString &sNew )
 	pSong->m_sCredit = sNew;
 }
 
+static void ChangePreview(const RString& sNew)
+{
+	Song* pSong = GAMESTATE->m_pCurSong;
+	pSong->m_PreviewFile= sNew;
+}
+
 static void ChangeMainTitleTranslit( const RString &sNew )
 {
 	Song* pSong = GAMESTATE->m_pCurSong;
@@ -4707,6 +4716,7 @@ void ScreenEdit::HandleMainMenuChoice( MainMenuChoice c, const vector<int> &iAns
 				g_SongInformation.rows[artist].SetOneUnthemedChoice( pSong->m_sArtist );
 				g_SongInformation.rows[genre].SetOneUnthemedChoice( pSong->m_sGenre );
 				g_SongInformation.rows[credit].SetOneUnthemedChoice( pSong->m_sCredit );
+				g_SongInformation.rows[preview].SetOneUnthemedChoice(pSong->m_PreviewFile);
 				g_SongInformation.rows[main_title_transliteration].SetOneUnthemedChoice( pSong->m_sMainTitleTranslit );
 				g_SongInformation.rows[sub_title_transliteration].SetOneUnthemedChoice( pSong->m_sSubTitleTranslit );
 				g_SongInformation.rows[artist_transliteration].SetOneUnthemedChoice( pSong->m_sArtistTranslit );
@@ -5419,6 +5429,7 @@ static LocalizedString ENTER_SUB_TITLE			("ScreenEdit","Enter a new sub title.")
 static LocalizedString ENTER_ARTIST			("ScreenEdit","Enter a new artist.");
 static LocalizedString ENTER_GENRE			("ScreenEdit","Enter a new genre.");
 static LocalizedString ENTER_CREDIT			("ScreenEdit","Enter a new credit.");
+static LocalizedString ENTER_PREVIEW ("ScreenEdit", "Enter a preview file.");
 static LocalizedString ENTER_MAIN_TITLE_TRANSLIT	("ScreenEdit","Enter a new main title transliteration.");
 static LocalizedString ENTER_SUB_TITLE_TRANSLIT		("ScreenEdit","Enter a new sub title transliteration.");
 static LocalizedString ENTER_ARTIST_TRANSLIT		("ScreenEdit","Enter a new artist transliteration.");
@@ -5447,6 +5458,9 @@ void ScreenEdit::HandleSongInformationChoice( SongInformationChoice c, const vec
 	case credit:
 		ScreenTextEntry::TextEntry( SM_None, ENTER_CREDIT, pSong->m_sCredit, 100, NULL, ChangeCredit, NULL );
 		break;
+	case preview:
+		ScreenTextEntry::TextEntry(SM_None, ENTER_PREVIEW, pSong->m_PreviewFile, 100, SongUtil::ValidateCurrentSongPreview, ChangePreview, NULL);
+		break;
 	case main_title_transliteration:
 		ScreenTextEntry::TextEntry( SM_None, ENTER_MAIN_TITLE_TRANSLIT, pSong->m_sMainTitleTranslit, 100, NULL, ChangeMainTitleTranslit, NULL );
 		break;

src/ScreenEdit.h

@@ -568,6 +568,7 @@ public:
 		artist,
 		genre,
 		credit,
+		preview,
 		main_title_transliteration,
 		sub_title_transliteration,
 		artist_transliteration,

src/ScreenManager.cpp

@@ -742,7 +742,12 @@ void ScreenManager::LoadDelayedScreen()
 		// Screens may not call SetNewScreen from the ctor or Init(). (We don't do this
 		// check inside PrepareScreen; that may be called from a thread for concurrent
 		// loading, and the main thread may call SetNewScreen during that time.)
-		ASSERT_M( m_sDelayedScreen.empty(), m_sDelayedScreen );
+		// Emit an error instead of asserting. -Kyz
+		if(!m_sDelayedScreen.empty())
+		{
+			LuaHelpers::ReportScriptError("Setting a new screen during an InitCommand is not allowed.");
+			m_sDelayedScreen= "";
+		}
 
 		bLoaded = ActivatePreparedScreenAndBackground( sScreenName );
 		ASSERT( bLoaded );

src/ScreenNetSelectMusic.cpp

@@ -548,10 +548,10 @@ void ScreenNetSelectMusic::MusicChanged()
 		{
 			SOUND->StopMusic();
 			SOUND->PlayMusic(
-				GAMESTATE->m_pCurSong->GetMusicPath(), 
+				GAMESTATE->m_pCurSong->GetPreviewMusicPath(),
 				NULL,
 				true,
-				GAMESTATE->m_pCurSong->m_fMusicSampleStartSeconds,
+				GAMESTATE->m_pCurSong->GetPreviewStartSeconds(),
 				GAMESTATE->m_pCurSong->m_fMusicSampleLengthSeconds );
 		}
 	}

src/ScreenWithMenuElements.cpp

@@ -79,17 +79,14 @@ void ScreenWithMenuElements::Init()
 
 	// decorations
 	{
-		AutoActor decorations;
-		decorations.LoadB( m_sName, "decorations" );
-		decorations->SetName("Decorations");
-		decorations->SetDrawOrder( DRAW_ORDER_DECORATIONS );
-		ActorFrame *pFrame = dynamic_cast<ActorFrame*>(static_cast<Actor*>(decorations));
+		m_Decorations.LoadB( m_sName, "decorations" );
+		m_Decorations->SetName("Decorations");
+		m_Decorations->SetDrawOrder( DRAW_ORDER_DECORATIONS );
+		ActorFrame *pFrame = dynamic_cast<ActorFrame*>(static_cast<Actor*>(m_Decorations));
 		if( pFrame )
 		{
-			m_vDecorations = pFrame->GetChildren();
-			FOREACH( Actor*, m_vDecorations, child )
-				this->AddChild( *child );
-			pFrame->RemoveAllChildren();
+			this->AddChild(m_Decorations);
+			LOAD_ALL_COMMANDS(m_Decorations);
 		}
 	}
 
@@ -167,8 +164,6 @@ ScreenWithMenuElements::~ScreenWithMenuElements()
 		if( m_MemoryCardDisplay[p] != NULL )
 			SAFE_DELETE( m_MemoryCardDisplay[p] );
 	}
-	FOREACH( Actor*, m_vDecorations, actor )
-		delete *actor;
 }
 
 void ScreenWithMenuElements::SetHelpText( RString s )

src/ScreenWithMenuElements.h

@@ -45,7 +45,7 @@ protected:
 	MemoryCardDisplay	*m_MemoryCardDisplay[NUM_PLAYERS];
 	MenuTimer			*m_MenuTimer;
 	AutoActor			m_sprOverlay;
-	vector<Actor*>		m_vDecorations;
+	AutoActor m_Decorations;
 
 	Transition			m_In;
 	Transition			m_Out;

src/Song.cpp

@@ -43,7 +43,7 @@
  * @brief The internal version of the cache for StepMania.
  *
  * Increment this value to invalidate the current cache. */
-const int FILE_CACHE_VERSION = 222;
+const int FILE_CACHE_VERSION = 223;
 
 /** @brief How long does a song sample last by default? */
 const float DEFAULT_MUSIC_SAMPLE_LENGTH = 12.f;
@@ -1479,22 +1479,20 @@ RString Song::GetPreviewVidPath() const
 
 RString Song::GetPreviewMusicPath() const
 {
-	RString preview= GetSongDir() + "preview.ogg";
-	if(FILEMAN->DoesFileExist(preview))
+	if(m_PreviewFile.empty())
 	{
-		return preview;
+		return GetMusicPath();
 	}
-	return GetMusicPath();
+	return GetSongAssetPath(m_PreviewFile, m_sSongDir);
 }
 
 float Song::GetPreviewStartSeconds() const
 {
-	RString preview= GetSongDir() + "preview.ogg";
-	if(FILEMAN->DoesFileExist(preview))
+	if(m_PreviewFile.empty())
 	{
-		return 0.0f;
+		return m_fMusicSampleStartSeconds;
 	}
-	return m_fMusicSampleStartSeconds;
+	return 0.0f;
 }
 
 RString Song::GetDisplayMainTitle() const
@@ -1814,6 +1812,12 @@ public:
 			lua_pushnil(L);
 		return 1; 
 	}
+	static int GetPreviewMusicPath(T* p, lua_State* L)
+	{
+		RString s= p->GetPreviewMusicPath();
+		lua_pushstring(L, s);
+		return 1;
+	}
 	static int GetJacketPath( T* p, lua_State *L )
 	{
 		RString s = p->GetJacketPath();
@@ -1886,7 +1890,7 @@ public:
 	}
 	static int GetSampleStart( T* p, lua_State *L )
 	{
-		lua_pushnumber(L, p->m_fMusicSampleStartSeconds);
+		lua_pushnumber(L, p->GetPreviewStartSeconds());
 		return 1;
 	}
 	static int GetSampleLength( T* p, lua_State *L )
@@ -2128,6 +2132,7 @@ public:
 		ADD_METHOD( ShowInDemonstrationAndRanking );
 		ADD_METHOD( HasPreviewVid );
 		ADD_METHOD( GetPreviewVidPath );
+		ADD_METHOD(GetPreviewMusicPath);
 	}   
 };
 

src/Song.h

@@ -224,6 +224,7 @@ public:
 	RString m_sOrigin; // song origin (for .ssc format)
 
 	RString	m_sMusicFile;
+	RString m_PreviewFile;
 	RString	m_sInstrumentTrackFile[NUM_InstrumentTrack];
 
 	/** @brief The length of the music file. */

src/SongUtil.cpp

@@ -899,6 +899,24 @@ bool SongUtil::ValidateCurrentStepsCredit( const RString &sAnswer, RString &sErr
 	return true;
 }
 
+static LocalizedString PREVIEW_DOES_NOT_EXIST("SongUtil", "The preview file '%s' does not exist.");
+bool SongUtil::ValidateCurrentSongPreview(const RString& answer, RString& error)
+{
+	if(answer.empty())
+	{ return true; }
+	Song* song= GAMESTATE->m_pCurSong;
+	RString real_file= song->m_PreviewFile;
+	song->m_PreviewFile= answer;
+	RString path= song->GetPreviewMusicPath();
+	bool valid= DoesFileExist(path);
+	song->m_PreviewFile= real_file;
+	if(!valid)
+	{
+		error= ssprintf(PREVIEW_DOES_NOT_EXIST.GetValue(), answer.c_str());
+	}
+	return valid;
+}
+
 void SongUtil::GetAllSongGenres( vector<RString> &vsOut )
 {
 	set<RString> genres;

src/SongUtil.h

@@ -165,6 +165,7 @@ namespace SongUtil
 	bool ValidateCurrentStepsDescription( const RString &sAnswer, RString &sErrorOut );
 	bool ValidateCurrentStepsCredit( const RString &sAnswer, RString &sErrorOut );
 	bool ValidateCurrentStepsChartName(const RString &answer, RString &error);
+	bool ValidateCurrentSongPreview(const RString& answer, RString& error);
 
 	void GetAllSongGenres( vector<RString> &vsOut );
 	/**