Add GetMaxCombo.

Store combo rollover separately in the combo record.

stepmania/src/StageStats.cpp

@@ -183,7 +183,7 @@ void StageStats::UpdateComboList( PlayerNumber pn, float pos )
 	fFirstPos[pn] = min( pos, fFirstPos[pn] );
 	fLastPos[pn] = max( pos, fLastPos[pn] );
 	
-	const int cnt = iCurCombo[pn];
+	int cnt = iCurCombo[pn];
 	if( !cnt )
 		return; /* no combo */
 
@@ -193,6 +193,15 @@ void StageStats::UpdateComboList( PlayerNumber pn, float pos )
 		Combo_t NewCombo;
 		NewCombo.start = pos;
 		ComboList[pn].push_back( NewCombo );
+
+		/* If this is the first combo, and the current combo is greater than 1,
+		 * then that extra part of the combo must have come from a previous song.
+		 * Remember it separately. */
+		if( ComboList[pn].size() == 1 )
+		{
+			ComboList[pn][0].rollover = cnt-1;
+			cnt = 1;
+		}
 	}
 
 	Combo_t &combo = ComboList[pn].back();
@@ -200,6 +209,23 @@ void StageStats::UpdateComboList( PlayerNumber pn, float pos )
 	combo.cnt = cnt;
 }
 
+/* This returns the largest combo contained within the song, as if
+ * m_bComboContinuesBetweenSongs is turned off. */
+StageStats::Combo_t StageStats::GetMaxCombo( PlayerNumber pn ) const
+{
+	if( ComboList[pn].size() == 0 )
+		return Combo_t();
+
+	int m = 0;
+	for( unsigned i = 1; i < ComboList[pn].size(); ++i )
+	{
+		if( ComboList[pn][i].cnt > ComboList[pn][m].cnt )
+			m = i;
+	}
+
+	return ComboList[pn][m];
+}
+
 /* SetLifeRecord and UpdateComboList take a percentage (0..1) in pos, but the values
  * will actually be somewhat off as they're based on Song::m_fFirstBeat and m_fLastBeat,
  * which are per-song, not per-Steps.  Scale and shift our records so that they're

stepmania/src/StageStats.h

@@ -73,13 +73,17 @@ struct StageStats
 		/* Combo size, in steps. */
 		int cnt;
 
-		Combo_t(): start(-1), size(-1), cnt(-1) { }
+		/* Combo rollover from the last song (see UpdateComboList for details). */
+		int rollover;
+
+		Combo_t(): start(0), size(0), cnt(0), rollover(0) { }
 		bool IsZero() const { return start < 0; }
 	};
 	float fFirstPos[NUM_PLAYERS], fLastPos[NUM_PLAYERS];
 
 	bool	FullCombo( PlayerNumber pn ) const;
 	void	UpdateComboList( PlayerNumber pn, float pos );
+	Combo_t GetMaxCombo( PlayerNumber pn ) const;
 
 	void	Finish();
 	vector<Combo_t> ComboList[NUM_PLAYERS];