/mob/dead
	move_resist = INFINITY
	flags_2 = IMMUNE_TO_SHUTTLECRUSH_2

/mob/dead/Login()
	. = ..()
	var/turf/T = get_turf(src)
	if(isturf(T))
		update_z(T.z)

/mob/dead/Logout()
	update_z(null)
	return ..()

/mob/dead/on_changed_z_level(turf/old_turf, turf/new_turf)
	..()
	update_z(new_turf?.z)

/mob/dead/proc/update_z(new_z) // 1+ to register, null to unregister
	if(registered_z != new_z)
		if(registered_z)
			SSmobs.dead_players_by_zlevel[registered_z] -= src
		if(client)
			if(new_z)
				SSmobs.dead_players_by_zlevel[new_z] += src
			registered_z = new_z
		else
			registered_z = null

/mob/dead/dust()	//ghosts can't be vaporised.
	return

/mob/dead/gib()		//ghosts can't be gibbed.
	return