diff --git a/stepmania/src/StyleDef.cpp b/stepmania/src/StyleDef.cpp
index badbff3e8d..5ce9d19192 100644
--- a/stepmania/src/StyleDef.cpp
+++ b/stepmania/src/StyleDef.cpp
@@ -99,3 +99,19 @@ void StyleDef::GetMinAndMaxColX( PlayerNumber pn, float& fMixXOut, float& fMaxXO
 		fMaxXOut = max( fMaxXOut, m_ColumnInfo[pn][i].fXOffset );
 	}
 }
+
+int StyleDef::NumSidesJoinedToPlay() const
+{
+	switch( m_StyleType )
+	{
+	case StyleDef::ONE_PLAYER_ONE_CREDIT:
+		return 1;
+	case StyleDef::TWO_PLAYERS_TWO_CREDITS:
+	case StyleDef::ONE_PLAYER_TWO_CREDITS:
+		return 2;
+	default:
+		ASSERT(0);
+		return 1;
+	}
+}
+
diff --git a/stepmania/src/StyleDef.h b/stepmania/src/StyleDef.h
index 0e5ca5f3a9..6b1bc14d46 100644
--- a/stepmania/src/StyleDef.h
+++ b/stepmania/src/StyleDef.h
@@ -78,6 +78,8 @@ public:
 	bool MatchesNotesType( StepsType type ) const;
 
 	void GetMinAndMaxColX( PlayerNumber pn, float& fMixXOut, float& fMaxXOut ) const;
+
+	int NumSidesJoinedToPlay() const;
 };