Merge pull request #13834 from Heroman3003/big-crash-fixes

Fixes critical crash bugs

code/controllers/subsystems/ai.dm

@@ -39,7 +39,7 @@ SUBSYSTEM_DEF(ai)
 		if(!L?.loc)
 			continue
 
-		if(process_z[get_z(L)] || !L.low_priority) //VOREStation Edit End
+		if((get_z(L) && process_z[get_z(L)]) || !L.low_priority) //VOREStation Edit End
 			A.handle_strategicals()
 		else
 			slept_mobs++

code/controllers/subsystems/mobs.dm

@@ -40,7 +40,7 @@ SUBSYSTEM_DEF(mobs)
 		if(!M || QDELETED(M))
 			mob_list -= M
 			continue
-		else if(M.low_priority && !(M.loc && process_z[get_z(M)]))
+		else if(M.low_priority && !(M.loc && get_z(M) && process_z[get_z(M)]))
 			slept_mobs++
 			continue
 

code/modules/xenoarcheaology/effects/vampire.dm

@@ -24,7 +24,7 @@
 		var/obj/effect/decal/cleanable/blood/splatter/animated/B = new(M.loc)
 		B.basecolor = M.species.get_blood_colour(M)
 		B.color = M.species.get_blood_colour(M)
-		B.target_turf = pick(range(1, get_turf(holder)))
+		B.target_turf = pick(RANGE_TURFS(1, holder))
 		B.blood_DNA = list()
 		B.blood_DNA[M.dna.unique_enzymes] = M.dna.b_type
 		M.vessel.remove_reagent("blood",rand(10,30))

code/modules/xenoarcheaology/finds/special.dm

@@ -82,13 +82,13 @@
 	//use up stored charges
 	if(charges >= 10)
 		charges -= 10
-		new /obj/effect/spider/eggcluster(pick(view(1,src)))
+		new /obj/effect/spider/eggcluster(pick(RANGE_TURFS(1,src)))
 
 	if(charges >= 3)
 		if(prob(5))
 			charges -= 1
 			var/spawn_type = pick(/mob/living/simple_mob/creature)
-			new spawn_type(pick(view(1,src)))
+			new spawn_type(pick(RANGE_TURFS(1,src)))
 			playsound(src, pick('sound/hallucinations/growl1.ogg','sound/hallucinations/growl2.ogg','sound/hallucinations/growl3.ogg'), 50, 1, -3)
 
 	if(charges >= 1)