Changed StageLayout into a struct and consolidated layout math functions into it.

Added convenience methods for determining if a given column is an up, down, or side arrow.
Added explicit tech counts for up footswitches and down footswitches

src/TechCounts.h

@@ -12,7 +12,9 @@ class NoteData;
 enum TechCountsCategory
 {
 	TechCountsCategory_Crossovers = 0,
-	TechCountsCategory_Footswitches,
+	TechCountsCategory_TotalFootswitches,
+	TechCountsCategory_UpFootswitches,
+	TechCountsCategory_DownFootswitches,
 	TechCountsCategory_Sideswitches,
 	TechCountsCategory_Jacks,
 	TechCountsCategory_Brackets,
@@ -77,7 +79,7 @@ public:
 	void FromString( RString sValues );
 
 	void PushSelf( lua_State *L );
-	static void CalculateTechCountsFromRows(const std::vector<StepParity::Row> &rows, TechCounts &out);
+	static void CalculateTechCountsFromRows(const std::vector<StepParity::Row> &rows, StepParity::StageLayout & layout, TechCounts &out);
 };
 
 #endif