implement switching possibility

overcooked_simulator/gui_2d_vis/overcooked_gui.py

@@ -364,6 +364,10 @@ class PyGameGUI:
                             current_player_name, ActionType.INTERACT, InterActionData.STOP
                         )
                         self.send_action(action)
+                # switch button Y <-> 3
+                if event.button == 3 and not CONNECT_WITH_STUDY_SERVER:
+                    if event.type == pygame.JOYBUTTONDOWN:
+                        key_set.next_player()
 
     def init_ui_elements(self):
         self.manager = pygame_gui.UIManager((self.window_width, self.window_height))