# Full frame logic, executed even if the display is not visible
	#
	# This method wraps `frame_core` and other services to be executed in the main app loop.
	#
	# To customize the behavior on each turn, it is preferable to redefined `frame_core`.
	# Still, `frame_full` can be redefined with care for more control.
	protected fun frame_full
	do
		var display = display
		if display != null then frame_core(display)

		feed_events
	end