extends Area2D

@export var pull_duration: float = 1.2
@export var pull_strength: float = 140.0
@export var explosion_damage: int = 50

@onready var animated_sprite_2d: AnimatedSprite2D = $AnimatedSprite2D
@onready var tornado_area: CollisionShape2D = $TornadoArea
@onready var explosion_collision: CollisionShape2D = $ExplosionCollision

var _is_pulling := true
var _damaged_enemies: Array[Node] = []

func _ready() -> void:
	tornado_area.disabled = false
	explosion_collision.disabled = true
	if animated_sprite_2d.sprite_frames.has_animation("default"):
		animated_sprite_2d.play("default")
	await get_tree().create_timer(pull_duration).timeout
	_explode()

func _physics_process(delta: float) -> void:
	if not _is_pulling:
		return
	for enemy in get_overlapping_bodies():
		if not enemy.is_in_group("enemies"):
			continue
		if enemy.is_dying:
			continue
		enemy.global_position = enemy.global_position.move_toward(global_position, pull_strength * delta)

func _explode() -> void:
	_is_pulling = false
	tornado_area.disabled = true
	explosion_collision.disabled = false
	if animated_sprite_2d.sprite_frames.has_animation("explosion"):
		animated_sprite_2d.play("explosion")
	await get_tree().physics_frame
	for body in get_overlapping_bodies():
		if body.is_in_group("enemies") and not _damaged_enemies.has(body):
			body.take_damage(explosion_damage)
			_damaged_enemies.append(body)
	if animated_sprite_2d.sprite_frames.has_animation("explosion"):
		await animated_sprite_2d.animation_finished
	else:
		await get_tree().create_timer(0.35).timeout
	queue_free()