Added methods for writing/loading #GROOVESTATSHASH to cache. When calling Lua GetGrooveStatsHash(), calculate it if it's not already been calculated.

src/NotesWriterSSC.cpp

@@ -429,6 +429,7 @@ static RString GetSSCNoteData( const Song &song, const Steps &in, bool bSavingCa
 	if (bSavingCache)
 	{
 		lines.push_back( ssprintf( "// step cache tags:" ) );
+
 		std::vector<RString> asTechCounts;
 		FOREACH_PlayerNumber( pn )
 		{
@@ -452,7 +453,6 @@ static RString GetSSCNoteData( const Song &song, const Steps &in, bool bSavingCa
 		{
 			npsPerMeasureStrings.push_back(serialize(npsPerMeasure, ",", 3));
 		}
-		
 		lines.push_back( ssprintf( "#NPSPERMEASURE:%s;", join("|",npsPerMeasureStrings).c_str() ) );
 
 		const std::vector<std::vector<int>> &allNotesPerMeasures = in.GetAllNotesPerMeasures();
@@ -468,11 +468,13 @@ static RString GetSSCNoteData( const Song &song, const Steps &in, bool bSavingCa
 		const std::vector<float> &peakNps = in.GetAllPeakNps();
 		lines.push_back("#PEAKNPS:" + serialize(peakNps, "|", 3) + ";");
 		
+		RString GrooveStatsHash = in.GetGrooveStatsHash();
+		lines.push_back(ssprintf("#GROOVESTATSHASH:%s;", GrooveStatsHash.c_str()));
+		
 		// NOTE(MV): #STEPFILENAME has to be at the end of the cache tags,
 		// because it's used in SSCLoader::LoadFromSimfile to determine when
 		// to switch the state back to GETTING_SONG_INFO, which means any tags
 		// after it will be ignored.
-		
 		lines.push_back(ssprintf("#STEPFILENAME:%s;", in.GetFilename().c_str()));
 		lines.push_back( ssprintf( "// end step cache tags" ) );
 	}