public synchronized void move() {
   _determinesNextTile();
   currentTile = _getMinEstimatedCostTile();
   nextTile.remove(currentTile);
   pastTile.add(currentTile);
   System.out.println(currentTile.getX() + "," + currentTile.getY());
 }
 private synchronized void __determinesNextTile(FbMapTile current, int nextX, int nextY) {
   try {
     FbMapTile tile =
         (current == null)
             ? originTile
             : mapTiles.get(current.getX() + nextX).get(current.getY() + nextY);
     if (!pastTile.contains(tile) && !nextTile.contains(tile)) {
       if (tile.getTileType().isWalkable()) {
         tile.setCost((current == null) ? 0 : (current.getCost() + 1));
         tile.setEstimatedCost(_countEstimatedCost(tile, destinationTile));
         nextTile.add(tile);
       }
     }
   } catch (Exception exception) {
     logp(exception.toString());
   }
 }
 private synchronized int _countEstimatedCost(FbMapTile origin, FbMapTile destination) {
   return Math.abs(parseInt(origin.getX()) - parseInt(destination.getX()))
       + Math.abs(parseInt(origin.getY()) - parseInt(destination.getY()));
 }