Makes the station Z level into a list instead of a single define

code/modules/events/spider_infestation.dm

@@ -1,3 +1,4 @@
+<<<<<<< HEAD
 /datum/round_event_control/spider_infestation
 	name = "Spider Infestation"
 	typepath = /datum/round_event/spider_infestation
@@ -35,3 +36,42 @@
 		spawn_atom_to_turf(spawn_type, vent, 1, FALSE)
 		vents -= vent
 		spawncount--
+=======
+/datum/round_event_control/spider_infestation
+	name = "Spider Infestation"
+	typepath = /datum/round_event/spider_infestation
+	weight = 5
+	max_occurrences = 1
+	min_players = 15
+
+/datum/round_event/spider_infestation
+	announceWhen	= 400
+
+	var/spawncount = 1
+
+
+/datum/round_event/spider_infestation/setup()
+	announceWhen = rand(announceWhen, announceWhen + 50)
+	spawncount = rand(5, 8)
+
+/datum/round_event/spider_infestation/announce()
+	priority_announce("Unidentified lifesigns detected coming aboard [station_name()]. Secure any exterior access, including ducting and ventilation.", "Lifesign Alert", 'sound/ai/aliens.ogg')
+
+
+/datum/round_event/spider_infestation/start()
+	var/list/vents = list()
+	for(var/obj/machinery/atmospherics/components/unary/vent_pump/temp_vent in world)
+		if((temp_vent.loc.z in GLOB.station_z_levels) && !temp_vent.welded)
+			var/datum/pipeline/temp_vent_parent = temp_vent.PARENT1
+			if(temp_vent_parent.other_atmosmch.len > 20)
+				vents += temp_vent
+
+	while((spawncount >= 1) && vents.len)
+		var/obj/vent = pick(vents)
+		var/spawn_type = /obj/structure/spider/spiderling
+		if(prob(66))
+			spawn_type = /obj/structure/spider/spiderling/nurse
+		spawn_atom_to_turf(spawn_type, vent, 1, FALSE)
+		vents -= vent
+		spawncount--
+>>>>>>> 10a3238... Makes the station Z level into a list instead of a single define (#30297)