on.update = function(dt)
	refresh_debug_animations()
	if not Show_code then
		if car.update then call_protected(car.update, dt) end
	else
		-- == menu area
		if Active_button and Active_button.expire <= Current_time then
			Active_button = nil
		end
		-- == settings area
		update_sliders(Global_state, App.mouse_x())
		-- == main area
		if Current_pane.editor_state.scrollbar_drag then
			adjust_scrollbar(Current_pane.editor_state, App.mouse_y())
		elseif Output_editor_state.scrollbar_drag then
			adjust_scrollbar(Output_editor_state, App.mouse_y())
		end
		-- never call edit.update; autosave is flaky on mobile devices
	end
end