public Tile getTileAt(Position p) {
    if ( p.getRow() == 0 && p.getColumn() == 0 ) {
      return new StubTile(GameConstants.FOREST, 0, 0);
    }
    if ( p.getRow() == 1 && p.getColumn() == 0 ) {
      return new StubTile(GameConstants.HILLS, 1, 0);
    }
    return new StubTile(GameConstants.PLAINS, 0, 1);
  }