def newLoc(): Unit = {
      var nrFreeSpots : Int = 0
      for (j <- 0 until nrRows; i <- 0 until nrColumns) {
        var foundSnake : Boolean = false
        for (k <- PlayerSnake.x.indices) {
          if (PlayerSnake.x(k) == i && PlayerSnake.y(k) == j) foundSnake = true
        }
        if (!foundSnake) nrFreeSpots += 1
      }
      if (nrFreeSpots == 0) {
        x = -1
        y = -1
        return
      }
      val r: Int = randomGen.randomInt(nrFreeSpots)
      var count : Int = 0
      for (j <- 0 until nrRows; i <- 0 until nrColumns) {
        var foundSnake : Boolean = false
        for (k <- PlayerSnake.x.indices) {
          if (PlayerSnake.x(k) == i && PlayerSnake.y(k) == j) foundSnake = true
        }
        if (!foundSnake) {
          if (count == r) {
            x = i
            y = j
            return
          }
          count += 1
        }
      }
    }