Maintenance loot table revamp (#47646)

* new maint loot tables

* Loot spawn probability finder

* maint loot pool changes

code/game/objects/effects/spawners/lootdrop.dm

@@ -360,3 +360,43 @@
 				/obj/item/circuitboard/computer/apc_control,
 				/obj/item/circuitboard/computer/robotics
 				)
+
+//finds the probabilities of items spawning from a loot spawner's loot pool
+/obj/item/loot_table_maker
+	icon = 'icons/effects/landmarks_static.dmi'
+	icon_state = "random_loot"
+	var/spawner_to_test = /obj/effect/spawner/lootdrop/maintenance //what lootdrop spawner to use the loot pool of
+	var/loot_count = 180 //180 is about how much maint loot spawns per map as of 11/14/2019
+	//result outputs
+	var/list/spawned_table //list of all items "spawned" and how many
+	var/list/stat_table //list of all items "spawned" and their occurrance probability
+
+/obj/item/loot_table_maker/Initialize()
+	. = ..()
+	make_table()
+
+/obj/item/loot_table_maker/attack_self(mob/user)
+	to_chat(user, "Loot pool re-rolled.")
+	make_table()
+
+/obj/item/loot_table_maker/proc/make_table()
+	spawned_table = list()
+	stat_table = list()
+	var/obj/effect/spawner/lootdrop/spawner_to_table = new spawner_to_test
+	var/lootpool = spawner_to_table.loot
+	qdel(spawner_to_table)
+	for(var/i in 1 to loot_count)
+		var/loot_spawn = pick_loot(lootpool)
+		if(!(loot_spawn in spawned_table))
+			spawned_table[loot_spawn] = 1
+		else
+			spawned_table[loot_spawn] += 1
+	stat_table += spawned_table
+	for(var/item in stat_table)
+		stat_table[item] /= loot_count
+
+/obj/item/loot_table_maker/proc/pick_loot(lootpool) //selects path from loot table and returns it
+	var/lootspawn = pickweight(lootpool)
+	while(islist(lootspawn))
+		lootspawn = pickweight(lootspawn)
+	return lootspawn