allow GameCommand to set SortOrder

stepmania/src/GameCommand.cpp

@@ -38,6 +38,7 @@ void GameCommand::Init()
 	m_pCourse = NULL;
 	m_pTrail = NULL;
 	m_pCharacter = NULL;
+	m_SortOrder = SORT_INVALID;
 }
 
 bool CompareSongOptions( const SongOptions &so1, const SongOptions &so2 );
@@ -95,6 +96,8 @@ bool GameCommand::DescribesCurrentMode( PlayerNumber pn ) const
 		return false;
 	if( m_pTrail && GAMESTATE->m_pCurTrail[pn] != m_pTrail )
 		return false;
+	if( m_SortOrder && GAMESTATE->m_SortOrder != m_SortOrder )
+		return false;
 
 	return true;
 }
@@ -211,6 +214,16 @@ void GameCommand::Load( int iIndex, const Commands& cmds )
 			m_sSongGroup = sValue;
 		}
 
+		else if( sName == "sort" )
+		{
+			m_SortOrder = StringToSortOrder( sValue );
+			if( m_SortOrder == SORT_INVALID )
+			{
+				m_sInvalidReason = ssprintf( "SortOrder \"%s\" is not valid.", sValue.c_str() );
+				m_bInvalid |= true;
+			}
+		}
+
 		else
 		{
 			CString sWarning = ssprintf( "Command '%s' is not valid.", command->GetOriginalCommandString().c_str() );
@@ -486,6 +499,8 @@ void GameCommand::Apply( PlayerNumber pn ) const
 		GAMESTATE->m_mapEnv[ i->first ] = i->second;
 	if( !m_sSongGroup.empty() )
 		GAMESTATE->m_sPreferredSongGroup = m_sSongGroup;
+	if( m_SortOrder != SORT_INVALID )
+		GAMESTATE->m_SortOrder = m_SortOrder;
 
 	// HACK:  Set life type to BATTERY just once here so it happens once and 
 	// we don't override the user's changes if they back out.
@@ -506,7 +521,9 @@ bool GameCommand::IsZero() const
 		m_pCourse != NULL || 
 		m_pTrail != NULL || 
 		m_pCharacter != NULL || 
-		m_CourseDifficulty != DIFFICULTY_INVALID )
+		m_CourseDifficulty != DIFFICULTY_INVALID ||
+		m_SortOrder != SORT_INVALID
+		)
 		return false;
 
 	return true;

stepmania/src/GameCommand.h

@@ -48,6 +48,7 @@ struct GameCommand		// used in SelectMode
 	Character*	m_pCharacter;
 	std::map<CString,CString> m_SetEnv;
 	CString		m_sSongGroup;
+	SortOrder	m_SortOrder;
 };
 
 #endif