Initial idea for the interactive devices thing but I kind of hate it. Going to try another idea that will be simpler.

gui.cpp

@@ -261,6 +261,10 @@ void GUI::handle_world_events() {
                 std::string(item.data["name"])));
         }
         break;
+
+      case eGUI::STAIRS: {
+          $status_ui.log("You can go down stairs!");
+       } break;
       default:
         $status_ui.log(format("INVALID EVENT! {},{}", evt, entity));
     }