/**
 * at_indicator -- Provides a visual indication of airtunnel status
 *
 */

obj/machinery/at_indicator
	name = "Air Tunnel Indicator"
	icon = 'airtunnel.dmi'
	icon_state = "reader00"
	anchored = 1.0

	process()
		if(! (stat & (BROKEN|NOPOWER)) )
			use_power(5, ENVIRON)
		src.update_icon()
		return


	// update the icon_state, depending on the status of the airtunnel

	proc/update_icon()

		if(stat & (BROKEN|NOPOWER) )
			icon_state = "reader_broken"
			return

		var/status = 0
		if (SS13_airtunnel.operating == 1)
			status = "r"
		else if (SS13_airtunnel.operating == 2)
			status = "e"
		else
			var/obj/move/airtunnel/connector/C = pick(SS13_airtunnel.connectors)
			if (C.current == C)
				status = 0
			else
				if (!( C.current.next ))
					status = 2
				else
					status = 1
		src.icon_state = text("reader[][]", (SS13_airtunnel.siphon_status == 2 ? "1" : "0"), status)
		return


	// called when object is inside an explosion

	ex_act(severity)
		switch(severity)
			if(1.0)
				del(src)
				return
			if(2.0)
				if (prob(50))
					src.icon_state = "reader_broken"
					stat |= BROKEN
			if(3.0)
				if (prob(25))
					src.icon_state = "reader_broken"
					stat |= BROKEN
			else
		return

	// called when object is attacked by a blob

	blob_act()
		if (prob(50))
			src.icon_state = "reader_broken"
			stat |= BROKEN