Add more code to units to help distinguish between types and visual values

game/unit.h

@@ -6,10 +6,13 @@
 #include "vector2.h"
 
 // Type for the unit type-id
-typedef char unit_c;
+typedef char unitType_c;
+
+// Typedef for unit visual representations
+typedef char unitVis_c;
 
 // Base unit type
-template < unit_c unit_cype >
+template < unitType_c unit_type >
 class CUnit
 {
 public:
@@ -17,6 +20,8 @@ public:
 	CUnit() = default;
 	virtual ~CUnit() = default;
 
+	virtual unitVis_c getVisual() const = 0;
+
 private:
 
 	// All units must have position