public final boolean isOnSurface()
  {
    return isOnSurface;
  }

  public final void addVillage(Village village)
  {
    if (villages == null)
      villages = new HashSet();
    if (!villages.contains(village))
    {
      villages.add(village);
      if (tiles != null)
      {
        for (VolaTile tile : tiles.values())
        {
          if (village.covers(tile.getTileX(), tile.getTileY())) {
            tile.setVillage(village);
          }
        }
      }
      addMineDoors(village);
    }
  }

  public final void removeVillage(Village village)
  {
    if (villages == null)
      villages = new HashSet();
    if (villages.contains(village))
    {
      villages.remove(village);
      if (tiles != null)
      {



        for (VolaTile tile : tiles.values())
        {
          if (village.covers(tile.getTileX(), tile.getTileY())) {
            tile.setVillage(null);
          }
        }
      }




      for (int x = startX; x < endX; x++)
      {
        for (int y = startY; y < endY; y++)
        {
          MineDoorPermission md = MineDoorPermission.getPermission(x, y);
          if (md != null)
          {
            if (village.covers(x, y)) {
              village.removeMineDoor(md);
            }
          }
        }
      }
    }
  }

  public final void updateVillage(Village village, boolean shouldStay) {
    if (villages == null)
      villages = new HashSet();
    if (villages.contains(village))
    {
      if (!shouldStay)
        villages.remove(village);
      if (tiles != null)
      {
        for (VolaTile tile : tiles.values())
        {
          if ((!village.covers(tile.getTileX(), tile.getTileY())) && (tile.getVillage() == village)) {
            tile.setVillage(null);
          }
        }
        for (VolaTile tile : tiles.values())
        {
          if (village.covers(tile.getTileX(), tile.getTileY()))
            tile.setVillage(village);
        }
      }
      for (int x = startX; x < endX; x++)
      {
        for (int y = startY; y < endY; y++)
        {
          MineDoorPermission md = MineDoorPermission.getPermission(x, y);
          if (md != null)
          {
            if ((!village.covers(x, y)) && (md.getVillage() == village))
              village.removeMineDoor(md);
            if (village.covers(x, y)) {
              village.addMineDoor(md);
            }
          }
        }
      }
      addMineDoors(village);
    }
    else if (shouldStay) {
      addVillage(village);
    }
  }

  final boolean containsVillage(int x, int y) {
    if (villages != null)
    {
      for (Village village : villages)
      {
        if (village.covers(x, y))
          return true;
      }
    }
    return false;
  }

  final Village getVillage(int x, int y)
  {
    if (villages != null)
    {
      for (Village village : villages)
      {
        if (village.covers(x, y))
          return village;
      }
    }
    return null;
  }





  public final Village[] getVillages()
  {
    if (villages != null) {
      return (Village[])villages.toArray(new Village[villages.size()]);
    }
    return new Village[0];
  }



























  public final void poll(int nums)
  {
    VolaTile[] lTileArray = getTiles();



    pollTicker = ((short)(pollTicker + 1));
    boolean lPollStuff = pollTicker >= maxZonesPolled;

    boolean spawnCreatures = (lPollStuff) || (Creatures.getInstance().getNumberOfCreatures() < localServermaxCreatures - 1000);








    boolean checkAreaEffect = Server.rand.nextInt(5) == 0;
    long now = System.nanoTime();
    for (VolaTile lElement : lTileArray)
    {
      lElement.poll(lPollStuff, pollTicker, checkAreaEffect);
    }




    float lElapsedTime = (float)(System.nanoTime() - now) / 1000000.0F;
    if ((logger.isLoggable(Level.FINE)) && (lElapsedTime > 200.0F))
    {
      logger.fine("Zone at " + startX + ", " + startY + " polled " + lTileArray.length + " tiles. That took " + lElapsedTime + " millis.");

    }
    else if ((!localServertestServer) && (lElapsedTime > 300.0F))
      logger.log(Level.INFO, "Zone at " + startX + ", " + startY + " polled " + lTileArray.length + " tiles. That took " + lElapsedTime + " millis.");
    Object t;
    Creature cret;
    if (isOnSurface())
    {
      if ((Server.getWeather().getFog() > 0.5F) && (fogSpiders.size() < Zones.worldTileSizeX / 10))