class_name Weapon
extends Node2D

# constants
@export var max_ammo = 1
## Number of seconds until the weapon can be used again.
@export var cooldown = 1
@export var shot: Projectile
@export var shot_spawn: Node2D
@export var audio: AudioStreamRandomizer

# gameplay variables
var ammo
var timer = 0.0

# Called when the node enters the scene tree for the first time.
func _ready() -> void:
	ammo = max_ammo


# Called every frame. 'delta' is the elapsed time since the previous frame.
func _process(delta: float) -> void:
	timer += delta

# Creates and returns an instance of the weapon's projectile.
func shoot() -> Projectile:
	if timer > cooldown && ammo > 0:
		timer = 0
		var new_shot = shot.instantiate()
		owner.add_child(new_shot)
		new_shot.transform = shot_spawn.transform
		ammo -= 1
		audio.play()
		return new_shot
	else:
		return null

func add_ammo(amount):
	ammo += amount
	if ammo > max_ammo:
		ammo = max_ammo