case object Ping
case object Pong
case class Play(opp: ActorRef)

class Player extends Actor {
    def receive = {
        case Play(opp: ActorRef) =>
            println("Start!")
            opp ! Ping
        case Ping =>
            Thread.sleep(200)
            println("Ping!")
            sender ! Pong
        case Pong =>
            Thread.sleep(200)
            println("   Pong!")
            sender ! Ping
    }
}


object zad1 extends App {
    val system = ActorSystem("Pingiel")
    val player1 = system.actorOf(Props[Player], "dude1")
    val player2 = system.actorOf(Props[Player], "dude2")
    player1 ! Play(player2)
}