Merge pull request #5702 from Citadel-Station-13/upstream-merge-35639

[MIRROR] Refactors anti-magic into a component

code/datums/components/anti_magic.dm

@@ -0,0 +1,43 @@
+/datum/component/anti_magic
+	var/magic = FALSE
+	var/holy = FALSE
+
+/datum/component/anti_magic/Initialize(_magic = FALSE, _holy = FALSE)
+	magic = _magic
+	holy = _holy
+
+/datum/component/anti_magic/proc/can_protect(_magic = TRUE, _holy = FALSE)
+	if(!enabled)
+		return FALSE
+	if((_magic && magic) || (_holy && holy))
+		return TRUE
+	return FALSE
+
+/mob/proc/anti_magic_check(magic = TRUE, holy = FALSE)
+	if(!magic && !holy)
+		return
+	var/list/obj/item/item_list = list()
+	item_list |= held_items
+	for(var/obj/O in item_list)
+		GET_COMPONENT_FROM(anti_magic, /datum/component/anti_magic, O)
+		if(!anti_magic)
+			continue
+		if(anti_magic.can_protect(magic, holy))
+			return O
+
+/mob/living/anti_magic_check(magic = TRUE, holy = FALSE)
+	if(!magic && !holy)
+		return
+
+	if((magic && has_trait(TRAIT_ANTIMAGIC)) || (holy && has_trait(TRAIT_HOLY)))
+		return src
+
+	var/list/obj/item/item_list = list()
+	item_list |= get_equipped_items(TRUE)
+	item_list |= held_items
+	for(var/obj/O in item_list)
+		GET_COMPONENT_FROM(anti_magic, /datum/component/anti_magic, O)
+		if(!anti_magic)
+			continue
+		if(anti_magic.can_protect(magic, holy))
+			return O