lots of initial design for the game, and unit data

game/unit.cpp

@@ -1,18 +1,19 @@
 #include "unit.h"
 
+// Unit types
 #include "unitv.h"
 
-#include <memory>
-
 std::unique_ptr<CUnit> CUnit::getUnitFromVis( unitVis_c vis )
 {
 	switch( vis )
 	{
+		// Match with any image for a V
 		case '^':
 		case '>':
 		case 'v':
 		case '<':
 		{
+			// Create a V
 			std::unique_ptr<CUnit> p = std::unique_ptr<CUnit>(new CUnitV);
 			if( (bool)p && p->setFromVisual(vis) )
 			{
@@ -22,5 +23,6 @@ std::unique_ptr<CUnit> CUnit::getUnitFromVis( unitVis_c vis )
 		}
 	}
 
+	// No unit found, return nullptr
 	return std::move(std::unique_ptr<CUnit>(nullptr));
 }