My first Scala program, the number guessing game.

import scala.swing._
import scala.util.Random
import event._
import scala.swing.BorderPanel.Position._

object GuessingGame extends SimpleSwingApplication {

  val r = new Random

  def newRand(max: Int): Int = {
    r.nextInt(max)
  }

  var maxTries = 7
  var tries = 0
  var sekretNum = newRand(100)

  def top = new MainFrame {
    title = "Guessing Game"
    preferredSize = new Dimension(700, 400)
    contents = new BorderPanel {
      val hundred = new Button {
        text = "1-100 range"
      }
      val thousand = new Button {
        text = "1-1000 range"
      }
      val guess = new TextField {
        columns = 15
        text = "Take a wild guess between 0 and 100!"
      }
      val buttonBox = new BoxPanel(Orientation.Vertical) {
        contents += hundred
        contents += thousand
        contents += guess
        border = Swing.EmptyBorder(30, 30, 10, 30)
      }

      val feedback = new TextArea {
        text = ""
      }
      val feedbackBox = new BoxPanel(Orientation.Vertical) {
        contents += feedback
        border = Swing.EmptyBorder(30, 30, 10, 30)
      }

      layout(buttonBox) = West
      //layout(thousand) = West
      layout(feedback) = Center


      listenTo(hundred)
      listenTo(thousand)
      listenTo(guess)
      reactions += {
        case ButtonClicked(component) if component == hundred => {
          sekretNum = newRand(100)
          maxTries = 7
          tries = 0
          guess.text = "Take a wild guess between 0 and 100"
        }
        case ButtonClicked(component) if component == thousand => {
          sekretNum = newRand(1000)
          maxTries = 20
          tries = 0
          guess.text = "Take a wild guess between 0 and 1000"
        }
        case MouseClicked(component, _, _, _, _ )  if component == guess => {
          guess.text = ""
        }
        case EditDone(component) if component == guess => {

          if (tries == maxTries) {
            feedback.text += "You lose!\n"
            tries = 0
          }
          else if (guess.text.forall(! _.isDigit)){
            guess.text = ""
          }
          else {
            if ( guess.text.toInt < sekretNum) {
              feedback.text += "Higher\n"
              tries += 1
            }
            else if (guess.text.toInt > sekretNum) {
              feedback.text += "Lower!\n"
              tries += 1
            }
            else {
              feedback.text += "You win!\n"
              tries = 0
            }
          }
          guess.text = ""
        }
      }
    }
  }
}