extends Area2D

var explosion = preload('res://Scenes/explosion.tscn')
var pop = preload("res://Sounds/Explosion.wav")
var speed = 750

var half_size: Vector2     # half of sprite dimensions (used for wrapping)

func _ready() -> void:
	connect("area_entered", _on_body_entered)
	
	half_size = Utils.get_half_size(self)
		
func _physics_process(delta):
	position += -transform.y * speed * delta
	
	var rect = get_viewport_rect()

	if position.x < -half_size.x or position.x > rect.size.x + half_size.x or position.y < -half_size.y or position.y > rect.size.y + half_size.y:
		#print_debug("FREED")
		queue_free()

func _on_body_entered(body):
	if body.is_in_group("enemies"):
		body.queue_free()
		
		Utils.play_sound(pop, get_parent())
		
		var boom = explosion.instantiate()
		boom.position = body.global_position
		boom.scale = body.scale
		get_parent().add_child(boom)
		
		Game.set_score(Game.score + 100)
		
	queue_free()
	#print_debug("KILLED")