extends Reference

class_name SimpleLootTable

var item_map = {}
var total_weight = 0
  
func _init(in_item_map : Dictionary):
	item_map.clear()
	total_weight = 0
	# Calculate total weight and accumulate the weight for each item
	for key in in_item_map.keys():
		total_weight += in_item_map[key]
		item_map[key] = total_weight

func roll_for_loot() -> Resource:
	randomize()
	var rng = randi() % total_weight
	for item in item_map.keys():
	# if the RNG is <= item cumulated weight then drop that item
		if rng <= item_map[item]:
			return item
	return null