import Array._

var gameBoard = List.fill[Char](3,3)(' ')

def makeRow(row: List[Char]) {
  var left = " " + row(0) + " |"
  var middle = " " + row(1) + " |"
  var right = " " + row(2) + " "
  println(left.concat(middle).concat(right))
}

def render() {
  (1 to 30).foreach(_ => println("\n"))
  val divider = "---+---+---"
  makeRow(gameBoard(0))
  println(divider)
  makeRow(gameBoard(1))
  println(divider)
  makeRow(gameBoard(2))
}

def gameHasMetEndCondition(Player: Char) : Boolean = {
  if (gameBoard(0).forall(x => (x.equals(Player)))
      || gameBoard(1).forall(x => (x.equals(Player)))
      || gameBoard(2).forall(x => (x.equals(Player)))
      || List(gameBoard(0)(0), gameBoard(1)(0), gameBoard(2)(0)).forall(x => (x.equals(Player)))
      || List(gameBoard(0)(1), gameBoard(1)(1), gameBoard(2)(1)).forall(x => (x.equals(Player)))
      || List(gameBoard(2)(0), gameBoard(2)(1), gameBoard(2)(2)).forall(x => (x.equals(Player)))
      || List(gameBoard(0)(0), gameBoard(1)(1), gameBoard(2)(2)).forall(x => (x.equals(Player)))
      || List(gameBoard(2)(0), gameBoard(1)(1), gameBoard(0)(2)).forall(x => (x.equals(Player)))) return true
  return false
}

class Player(playerMarker: Char) {
  val marker = playerMarker
  var name = ""
}

var playerOne = new Player('X')
var playerTwo = new Player('O')

println("Welcome to TicTacToe. First player, what’s your name?")
playerOne.name = readLine
println("Second player, what’s your name?")
playerTwo.name = readLine

for (turn <- 1 to 9) {
  render

  var currentPlayer = if (turn % 2 < 1) playerTwo else playerOne

  if (gameHasMetEndCondition(currentPlayer.marker)) {
    // Threw an exception here because I’m not sure how to break
    // out of a loop. Looks as though it can’t actually be done
    // this way in Scala.
    throw new Exception("Game has ended")
  }

  println((currentPlayer.name).concat(", make your move."))
  var row = readLine.toInt
  var column = readLine.toInt
  gameBoard = gameBoard.updated(row, gameBoard(row).updated(column, currentPlayer.marker))

}

println("It’s a tie. Everyone’s a winner.")