extends Label

const HISTORY_SIZE = 8

var pingCount := 0
var pingSent: Array[float] = []

func _ready():
	var timer := Timer.new()
	add_child(timer)
	timer.autostart = true
	timer.wait_time = 1
	timer.connect("timeout", self._ping)
	timer.start()

	pingSent.resize(HISTORY_SIZE)

func _process(_delta):
	if Client.udp.get_available_packet_count() > 0:
		#print("Received: %s" % udp.get_packet().get_string_from_utf8())
		var bytes := Client.udp.get_packet()
		var count := bytes.decode_u8(1)
		var timeSent := pingSent[count]
		var duration := Time.get_unix_time_from_system() - timeSent
		var ping := duration * 1000
		text = str(snapped(ping, 0.01))

func _ping():
	var buffer := StreamPeerBuffer.new()
	buffer.put_8(0)
	buffer.put_8(pingCount)
	Client.udp.put_packet(buffer.data_array)

	pingSent[pingCount] = Time.get_unix_time_from_system()
	pingCount += 1

	if pingCount >= HISTORY_SIZE:
		pingCount = 0