Merge pull request #5501 from Anewbe/magazine_things

Adds smart magazine, magazine functionality

code/datums/repositories/ammomaterial.dm

@@ -0,0 +1,18 @@
+var/global/datum/repository/ammomaterial/ammo_repository = new()
+
+/datum/repository/ammomaterial
+	var/list/ammotypes
+
+/datum/repository/ammomaterial/New()
+	ammotypes = list()
+	..()
+
+/datum/repository/ammomaterial/proc/get_materials_from_object(obj/item/ammo_casing/I)
+
+	if(!(I in ammotypes))
+		ammotypes += I
+		var/obj/item/ammo_casing/temp = new I
+		ammotypes[I] = temp.matter
+		qdel(temp)
+
+	return ammotypes[I]