Implementing the rendering system

In order for entities to be drawn on screen, they must have a component that represents them visually. After some careful planning, one can deduce that an entity will probably not have just one possible choice for a graphical representation. For example, instead of a sprite sheet, an entity can be a simple shape with a single color fill. In order to make that happen, we need a common interface for drawable components. Let's see what we can come up with:

class C_Drawable : public C_Base{
public:
  C_Drawable(const Component& l_type) : C_Base(l_type){}
  virtual ~C_Drawable(){}

  virtual void UpdatePosition(const sf::Vector2f& l_vec) = 0;
  virtual const sf::Vector2u& GetSize() = 0;
  virtual void Draw(sf::RenderWindow* l_wind) = 0;
private:

};

The first thing to note here is that the constructor of this class also takes in a component type, and simply passes it to the base class. Since C_Drawable only has purely virtual methods, it can never be...