Merge pull request #2282 from Cyantime/grublarvs

Improves solargrub larva

code/_helpers/unsorted_vr.dm

@@ -7,4 +7,35 @@
 		return
 	var/atom/A
 	for(A=O, A && !isturf(A.loc), A=A.loc);  // semicolon is for the empty statement
-	return A
+	return A
+
+/proc/get_safe_ventcrawl_target(var/obj/machinery/atmospherics/unary/vent_pump/start_vent)
+	if(!start_vent.network || !start_vent.network.normal_members.len)
+		return
+	var/list/vent_list = list()
+	for(var/obj/machinery/atmospherics/unary/vent_pump/vent in start_vent.network.normal_members)
+		if(vent == start_vent)
+			continue
+		if(vent.welded)
+			continue
+		if(istype(get_area(vent), /area/crew_quarters/sleep)) //No going to dorms
+			continue
+		vent_list += vent
+	if(!vent_list.len)
+		return
+	return pick(vent_list)
+
+/proc/split_into_3(var/total)
+	if(!total || !isnum(total))
+		return
+
+	var/part1 = rand(0,total)
+	var/part2 = rand(0,total)
+	var/part3 = total-(part1+part2)
+
+	if(part3<0)
+		part1 = total-part1
+		part2 = total-part2
+		part3 = -part3
+
+	return list(part1, part2, part3)