Properly exit game at exit

godot/scenes/lobby.tscn

@@ -160,5 +160,15 @@ grow_horizontal = 0
 grow_vertical = 0
 text = "Options"
 
+[node name="exit_button" type="Button" parent="." unique_id=267703633]
+layout_mode = 0
+offset_left = 43.0
+offset_top = 33.0
+offset_right = 108.0
+offset_bottom = 86.0
+theme_override_font_sizes/font_size = 32
+text = "Exit"
+
 [connection signal="pressed" from="options_panel/options_close" to="." method="close_options"]
 [connection signal="pressed" from="options_button" to="." method="open_options"]
+[connection signal="pressed" from="exit_button" to="." method="exit"]

rust/src/ui/lobby.rs

@@ -209,6 +209,12 @@ impl LobbyPanel {
         }
     }
 
+    #[func]
+    pub fn exit(&mut self) {
+        GameManager::singleton().bind_mut().exit_game();
+        NetworkManager::singleton().bind_mut().disconnect();
+    }
+
     fn option_changed(&mut self, key: GameOption, value: GameOptionValue) {
         if let Some(game) = &mut Game::singleton() {
             game.bind_mut().change_option(key, value);