code: private boolean isTileBlocked(Pathfindable mover, int tx, int ty)
      {
          final Tile tile = map.getTile(tx, ty);
          if (tile != null)
          {
              final TilePath tilePath = tile.getFeature(TilePath.class);
              return mover.isBlocking(tilePath.getCategory());
          }
          return false;
      }
docs: Check if tile is blocking.
  
  @param mover The mover reference.
  @param tx The horizontal tile to check.
  @param ty The vertical tile to check.
  @return <code>true</code> if blocked, <code>false</code> else.