Yeolds chase player from enemy sprite

extends Sprite
var enemySpeed = 3

onready var player_node = get_parent().get_node("player")


func _ready():
    set_process(true)
    pass

func _process(delta):
    var my_pos = get_pos()
    var player_pos = player_node.get_pos()
    var dx =  player_pos.x - my_pos.x
    var dy =  player_pos.y - my_pos.y
    var distance = sqrt(dx * dx + dy * dy)
    my_pos.x += dx / distance * enemySpeed
    my_pos.y += dy / distance * enemySpeed
    set_pos(my_pos)

    player_pos.x += 4
    player_node.set_pos(player_pos)