extends Node3D

class_name WeaponSlot

var has_weapon = false
var weapon: Weapon

## Contains data about swapped weapons
class WeaponSetData:
	## New Weapon node, may be null
	var new_weapon: Weapon
	## Old weapon id, may be empty string
	var old_weapon: StringName

	func _init(_new_weapon: Weapon, _old_weapon: StringName):
		new_weapon = _new_weapon
		old_weapon = _old_weapon

func _ready():
	has_weapon = get_child_count() > 0

	if has_weapon:
		var child = get_child(0)
		assert(child is Weapon)
		weapon = child as Weapon

func set_weapon(new_weapon: PackedScene) -> WeaponSetData:	
	var weapon_inst = null
	if new_weapon != null:
		weapon_inst = new_weapon.instantiate() as Weapon
		add_child(weapon_inst)
	
	var old_weapon_id = drop_weapon()
	return WeaponSetData.new(weapon_inst, old_weapon_id)

func drop_weapon() -> StringName:
	var id = ""
	if has_weapon:
		id = weapon.id
		weapon.queue_free()
	_ready()
	return id