private boolean isNotSeparatorRoom(Room separatorRoom, Room joinerRoom) {
    if (separatorRoom == null) return false;

    if (separatorRoom.isRotatable() && separatorRoom != joinerRoom) {
      separatorRoom.rotateRightRotatedType();
      rotationMap.put(
          separatorRoom.getDistance() - Math.abs(separatorRoom.getRotation()), separatorRoom);
      return false;
    }

    if (separatorRoom.isRotatable()
        && separatorRoom == joinerRoom
        && separatorRoom.getExit() != null) {
      if (separatorRoom.getRotatedType() == RoomType.TYPE_7) {
        separatorRoom.rotateRightRotatedType();
      } else if (separatorRoom.getRotatedType() == RoomType.TYPE_8
          && separatorRoom.getEntrance() == Direction.LEFT) {
        separatorRoom.rotateLeftRotatedType();
      } else if (separatorRoom.getRotatedType() == RoomType.TYPE_8
          && separatorRoom.getEntrance() == Direction.RIGHT) {
        separatorRoom.rotateRightRotatedType();
      } else if (separatorRoom.getRotatedType() == RoomType.TYPE_9
          && separatorRoom.getEntrance() == Direction.TOP) {
        separatorRoom.rotateLeftRotatedType();
      } else if (separatorRoom.getRotatedType() == RoomType.TYPE_9
          && separatorRoom.getEntrance() == Direction.LEFT) {
        separatorRoom.rotateRightRotatedType();
      }
      rotationMap.put(
          separatorRoom.getDistance() - Math.abs(separatorRoom.getRotation()), separatorRoom);
      return false;
    }

    return true;
  }
  public void findPathFromStartToEnd(Position startPosition) {

    System.err.println("move " + getRoom(startPosition).getPosition());
    Room actRoom = getRoom(startPosition).getNextRoom();
    actRoom.setDistance(1);
    System.err.println("move " + actRoom.getPosition());
    while (actRoom != getRoom(endPosition)) {

      Room nextRoom = actRoom.getNextRoom();
      if (nextRoom == null || nextRoom.isBlocker()) {
        actRoom.setDistance(0);
        actRoom = actRoom.getPrev();
      } else {
        nextRoom.setDistance(actRoom.getDistance() + 1);
        actRoom = nextRoom;
      }
      System.err.println("move " + actRoom.getPosition());
    }

    actRoom = getRoom(startPosition).getNext();

    while (actRoom != getRoom(endPosition) && actRoom.getRotation() == 0) {
      actRoom = actRoom.getNext();
    }
    if (actRoom.isRotatable() && actRoom.getRotation() != 0) {
      rotationMap.put(actRoom.getDistance() - Math.abs(actRoom.getRotation()), actRoom);
    }
  }