Updates Swarmers: Fixes Swarmer Megafauna (#12516)

code/modules/mob/living/simple_animal/hostile/bees.dm

@@ -83,6 +83,17 @@
 	if(!bee_syndicate && !beehome)
 		. += "<span class='warning'>This bee is homeless!</span>"
 
+/mob/living/simple_animal/hostile/poison/bees/ListTargets() // Bee processing is expessive, so we override them finding targets here.
+	if(!search_objects) //In case we want to have purely hostile bees
+		return ..()
+	else
+		. = list() // The following code is only very slightly slower than just returning oview(vision_range, targets_from), but it saves us much more work down the line
+		var/list/searched_for = oview(vision_range, targets_from)
+		for(var/obj/A in searched_for)
+			. += A
+		for(var/mob/A in searched_for)
+			. += A
+
 /mob/living/simple_animal/hostile/poison/bees/proc/generate_bee_visuals()
 	overlays.Cut()
 

code/modules/mob/living/simple_animal/hostile/hostile.dm

@@ -137,11 +137,7 @@
 			if(can_see(targets_from, HM, vision_range))
 				. += HM
 	else
-		. = list() // The following code is only very slightly slower than just returning oview(vision_range, targets_from), but it saves us much more work down the line, particularly when bees are involved
-		for(var/obj/A in oview(vision_range, targets_from))
-			. += A
-		for(var/mob/A in oview(vision_range, targets_from))
-			. += A
+		. = oview(vision_range, targets_from)
 
 /mob/living/simple_animal/hostile/proc/FindTarget(var/list/possible_targets, var/HasTargetsList = 0)//Step 2, filter down possible targets to things we actually care about
 	. = list()