AoC day 15

object day15 {

    case class Disk(val num: Int, val size: Int, val startPos: Int) {
      def passableAt(t: Int): Boolean = (startPos + t + num) % size == 0
    }

    def findSlot(t: Int, disks: List[Disk]): Int =
      if (disks.forall(_.passableAt(t))) t else findSlot(t + 1, disks)

    def run = {
      val disks = List(Disk(1, 7, 0), Disk(2, 13, 0), Disk(3, 3, 2),
        Disk(4, 5, 2),Disk(5, 17, 0), Disk(6, 19, 7))
      println(findSlot(0, disks))
      println(findSlot(0, disks :+ Disk(7, 11, 0)))
    }

}