failing function on coursera course.

gistfile1.txt

  def terrainFunction(levelVector: Vector[Vector[Char]]): Pos => Boolean =    
    { case Pos(x,y) =>
      try {levelVector(y)(x) != '-'} catch { case (e : IndexOutOfBoundsException) => false}
    }


  def findChar(c: Char, levelVector: Vector[Vector[Char]]): Pos = {
    val y = levelVector.indexWhere(_.contains(c))
    val x = levelVector(y).indexOf(c)
    Pos(x, y)
  }