extends HBoxContainer
class_name InventoryGui

@export var inventory_item_scene : PackedScene

var inventory_item_objects : Array[InventoryGuiItem]

func update(inventory : Inventory):
	if len(inventory_item_objects) == 0 or len(inventory_item_objects) != inventory.size:
		for o in inventory_item_objects:
			o.queue_free()
		inventory_item_objects = generate_inventory_item_objects(inventory.size)

	for i in range(inventory.size):
		inventory_item_objects[i].update(
			inventory.get_item(i), 
			i == inventory.current_item_ind and inventory.get_item(i) != null
		)

func generate_inventory_item_objects(nb : int = 1) -> Array[InventoryGuiItem]:
	var objects : Array[InventoryGuiItem] = []
	for i in range(nb):
		var o = inventory_item_scene.instantiate() as InventoryGuiItem
		add_child(o)
		objects.append(o)
	return objects