Start game not in fullscreen and enable fullscreen button

cooperative_cuisine/pygame_2d_vis/gui.py

@@ -205,7 +205,7 @@ class PyGameGUI:
         self.switch_score_color: bool = False
         self.count_frames_score_label: int = 0
 
-        self.fullscreen = do_study
+        self.fullscreen = False
 
         self.menu_state = MenuStates.Start
         self.manager: pygame_gui.UIManager
@@ -1030,6 +1030,7 @@ class PyGameGUI:
             self.start_screen_elements = [
                 self.start_button,
                 self.press_a_image,
+                self.fullscreen_button,
             ]
 
             self.on_all_screens = []