cliff hanger in Scala done in 15 minutes

scalaCliffHanger.scala

object cliffHanger extends App{
  
  val man = List(" 0\n","-","-","-\n"," |\n"," /","\\\n")
  
  def drawState(tries:Int,word:String,letters:List[Char]) = {
    println("\n\n\n")
    println(man.dropRight(tries).mkString)
    word.toList.foreach(c => if (letters.exists(c == _)) print(c) else print("_"))
    println()
  }
  
  def won(word:String,letters:List[Char])= word.toList.forall(c => letters.exists(c == _))
  
  def cliffHanger(word:String,tries:Int,letters:List[Char]):Unit={
    drawState(tries,word,letters)

    (won(word,letters),tries) match{
      case (true,_) => println("You Won!")
      case (_,0) => println("You lost. The word was "+word)
      case (_,n) => {
        val input = readLine()
        if (word.contains(input.head) && !letters.contains(input.head)){
          println("got letter "+input.head+" correct")
          cliffHanger(word,tries,input.head :: letters)
        }
          else { println(input.head +" is "+(if (letters.contains(input.head)) "already" else "not") +" a letter of the word")
            cliffHanger(word,tries-1,letters)
          }
      
    }
    
  }
    }


  println("Playing cliff hanger!")
  cliffHanger("foobarbaz",man.size,Nil)
}