Implemented move function for entities

Does not consider speed (TODO ?)

src/Entity.h

@@ -29,10 +29,10 @@ enum class State
 
 enum class Orientation
 {
-    Nort,
-    East,
-    South,
-    West,
+    Nort = 0,
+    East = 90,
+    South = 180,
+    West = 270,
 };
 
 
@@ -43,7 +43,7 @@ public:
     Entity(int x, int y, EntityType type, sf::Texture* texture, int width = 1, int height = 1);
     explicit Entity(const pugi::xml_node& entityNode, sf::Texture* texture);
 
-    void move();
+    void move(Orientation orientation);
     void update();
 
     const sf::RectangleShape& getShape() const;