extends EnemyState
class_name EnemyReload

@export var reload_sound : AudioStreamPlayer3D
@export var run_distance : float = 3
@export var body_turn_speed : float = 1

@onready var player = get_tree().current_scene.player

var heartbeat : float = 3.0
var remaining_bullets

func Enter():
	super()
	remaining_bullets = enemy.max_ammo
	enemy.servo_single.play()

func Exit():
	super()
	enemy.servo_single.play()

func update_waypoint():
	var direction = (player.global_position - enemy.global_position).normalized()
	enemy.nav_agent.set_target_position(direction * run_distance)

func Update(delta):
	if heartbeat > 0:
		heartbeat -= delta
	else:
		update_waypoint()
	
	if remaining_bullets > 0:
		if !reload_sound.is_playing():
			remaining_bullets -= 1
			reload_sound.play()
	else:
		finished_reload()
	

func Physics_Update(delta):
	enemy.turret_look_next.look_at(player.global_position)
	enemy.turret_look.rotation = lerp(enemy.turret_look.rotation,Vector3(deg_to_rad(90),0,0),delta * enemy.turret_look_speed)
	
	var destination = enemy.nav_agent.get_next_path_position()
	var local_destination = destination - enemy.global_position
	var direction = local_destination.normalized()
	if enemy.global_position.distance_to(local_destination) > 1:
		enemy.velocity = direction * move_speed
		enemy.spider_look_next.look_at(player.global_position)
		var look_target = enemy.spider_look_next.global_rotation.y
		enemy.global_rotation.y = lerp(enemy.global_rotation.y,look_target,delta * body_turn_speed)

func finished_reload():
	if enemy.turret_look_next.is_colliding():
		if enemy.turret_look_next.get_collider() is Player:
			Transitioned.emit(self,"attack")
		else:
			Transitioned.emit(self,"idle")
	else:
		Transitioned.emit(self,"idle")