extends Node

var PU_objects:Dictionary = {}
var Powerups:Dictionary = {}

# For random item drops
var AllItems: Dictionary = {}
var total_weight:float = 0

# Called when the node enters the scene tree for the first time.
func _ready():
	PU_objects["Nail Gun"] = {
		"scene": "res://PickupableObjects/NailGun/NailGun.tscn",
		"spawn_chance": 0.8,
		"roll_weight": 0.0
	}
	PU_objects["Grappling Hook"] = {
		"scene": "res://pickupable_objects/grappling_hook/grappling_hook.tscn",
		"spawn_chance": 0.3,
		"roll_weight": 0.0
	}
	PU_objects["Bomb"] = {
		"scene": "res://PickupableObjects/Bomb/bomb.tscn",
		"spawn_chance": 0.7,
		"roll_weight": 0.0
	}
	PU_objects["Glue Patch"] = {
		"scene": "res://PickupableObjects/GluePatch/GluePatch.tscn",
		"spawn_chance": 1.0,
		"roll_weight": 0.0
	}
	PU_objects["Void Portal"] = {
		"scene": "res://pickupable_objects/void_portal/void_portal.tscn",
		"spawn_chance": 0.3,
		"roll_weight": 0.0
	}
	
	Powerups["Speed Up"] = {
		"scene": "res://powerups/speed_up/speed_up.tscn",
		"spawn_chance": 1.0,
		"roll_weight": 0.0
	}
	
#	Castable_objects["Nail Gun"] = "res://pickupable_objects/nail_gun/nail_shot.tscn"
#	Castable_objects["Grappling Hook"] = "res://pickupable_objects/grappling_hook/hook_shot.tscn"
#	Castable_objects["Bomb"] = "res://pickupable_objects/bomb/bomb_thrown.tscn"
#	Castable_objects["Glue Patch"] = "res://pickupable_objects/glue_patch/glue_patch_deployed.tscn"
#	Castable_objects["Void Portal"] = "res://pickupable_objects/void_portal/void_portal_thrown.tscn"
	create_all_items_dict()
	calculate_weights()

func create_all_items_dict():
	for key in PU_objects.keys():
		AllItems[key] = PU_objects[key]
	for key in Powerups.keys():
		AllItems[key] = Powerups[key]

func calculate_weights():
	total_weight = 0
	for item in AllItems.values():
		total_weight = total_weight + item.spawn_chance
		item.roll_weight = total_weight
		
func return_random_item() -> Dictionary:
	var roll: float = randf_range(-0.90, total_weight)
	if roll < 0:
		return {}
	for item in AllItems.values():
		if item.roll_weight > roll:
			return item
	return {}