state machine godot

extends Node2D

var x = 0
var y = 0
var speed = 1
var state = 0


func _ready():
	set_process(true)

	pass
func _process(delta):
	update()

func _draw():
#	x = x + speed
	draw_circle(Vector2(x,10),10,Color(255,255,255))
	if state == 0:
		x = x + speed
		if x > 200:
			x = 200
			state = 1
	elif state == 1:
		x = x - speed
		if x < 0:
			x = 0
			state = 0

	print(x)