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

src/NotesLoaderSSC.cpp

@@ -412,7 +412,6 @@ void SetNpsPerMeasure(StepsTagInfo& info)
 {
 	if (info.from_cache || info.for_load_edit)
 	{
-		
 		std::vector<RString> valuesPerPlayer;
 		split((*info.params)[1], "|", valuesPerPlayer, true);
 		
@@ -504,6 +503,16 @@ void SetPeakNps(StepsTagInfo& info)
 	info.ssc_format= true;
 }
 
+void SetGrooveStatsHash(StepsTagInfo& info)
+{
+	if (info.from_cache || info.for_load_edit)
+	{
+		RString value = (*info.params)[1];
+		info.steps->SetCachedGrooveStatsHash(value);
+	}
+	info.ssc_format = true;
+}
+
 void SetCredit(StepsTagInfo& info)
 {
 	info.steps->SetCredit((*info.params)[1]);
@@ -748,6 +757,7 @@ struct ssc_parser_helper_t
 		steps_tag_handlers["NPSPERMEASURE"] = &SetNpsPerMeasure;
 		steps_tag_handlers["NOTESPERMEASURE"] = &SetNotesPerMeasure;
 		steps_tag_handlers["PEAKNPS"] = &SetPeakNps;
+		steps_tag_handlers["GROOVESTATSHASH"] = &SetGrooveStatsHash;
 		/* If this is called, the chart does not use the same attacks
 		 * as the Song's timing. No other changes are required. */
 		steps_tag_handlers["ATTACKS"]= &SetStepsAttacks;

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" ) );
 	}

src/Steps.cpp

@@ -1157,6 +1157,10 @@ public:
 
 	static int GetGrooveStatsHash(T *p, lua_State *L)
 	{
+		if(p->GetGrooveStatsHash().empty())
+		{
+			p->CalculateGrooveStatsHash();
+		}
 		lua_pushstring(L, p->GetGrooveStatsHash());
 		return 1;
 	}

src/Steps.h

@@ -155,6 +155,7 @@ public:
 	void SetCachedNpsPerMeasure(std::vector<std::vector<float>>& npsPerMeasure);
 	void SetCachedNotesPerMeasure(std::vector<std::vector<int>>& notesPerMeasure);
 	void SetPeakNps(std::vector<float>& peakNps);
+	void SetCachedGrooveStatsHash(const RString key);
 	float PredictMeter() const;
 
 	unsigned GetHash() const;