Added ability to actually build different unit types, as well as icons to distinguish them

game.h

@@ -40,6 +40,7 @@ class Game : public GameState
  private:
     void draw_stats(Vertex* v);
     void draw_button(MenuButton* button);
+    void draw_node(Vertex* v);
 
     void handle_button_press(ButtonAction action);
 
@@ -52,6 +53,9 @@ class Game : public GameState
     // surfaces containing textures to draw
     SDL_Surface* background;
     TTF_Font* font;
+    SDL_Surface* attacker_icon;
+    SDL_Surface* defender_icon;
+    SDL_Surface* producer_icon;
 
     // menu buttons
     list<MenuButton*> buttons;