More radiation balance changes and fixes (#32051)

* more balance changes and fixes

* cleanup

code/__HELPERS/radiation.dm

@@ -1,28 +1,28 @@
-/proc/get_rad_contents(atom/location, list/output=list()) // A special GetAllContents that doesn't search past things with rad insulation
-	. = output
-
-	if(!location)
-		return
-
-	output += location
-
-	var/datum/component/rad_insulation/insulation = location.GetComponent(/datum/component/rad_insulation)
-	if(insulation && insulation.protects)
-		return
-	
-	for(var/i in 1 to location.contents.len)
-		var/static/list/ignored_things = typecacheof(list( // These types will never have radiation applied to them or be looked inside of
+// A special GetAllContents that doesn't search past things with rad insulation
+// The protection var only protects the things inside from being affected.
+// The protecting object itself will get returned still.
+// The ignore list makes those objects never return at all
+/proc/get_rad_contents(atom/location)
+	var/list/processing_list = list(location)
+	. = list()
+	while(processing_list.len)
+		var/static/list/ignored_things = typecacheof(list(
 			/mob/dead,
 			/mob/camera,
 			/obj/effect,
 			/obj/docking_port,
-			/atom/movable/lighting_object
+			/atom/movable/lighting_object,
+			/obj/item/projectile
 			))
-
-		var/atom/thing = location.contents[i]
+		var/atom/thing = processing_list[1]
+		processing_list -= thing
 		if(ignored_things[thing.type])
 			continue
-		get_rad_contents(thing, output)
+		. += thing
+		var/datum/component/rad_insulation/insulation = thing.GetComponent(/datum/component/rad_insulation)
+		if(insulation && insulation.protects)
+			continue
+		processing_list += thing.contents
 
 /proc/radiation_pulse(atom/source, intensity, range_modifier, log=FALSE, can_contaminate=TRUE)
 	if(!SSradiation.can_fire)