def center(self, coords):
        """ center the map on a "map pixel"
        """
        x, y = [round(i, 0) for i in coords]
        self.view_rect.center = x, y

        tw, th = self.data.tile_size

        left, ox = divmod(x, tw)
        top, oy = divmod(y, th)

        vec = int(ox / 2), int(oy)

        iso = vector2_to_iso(vec)
        self._x_offset = iso[0]
        self._y_offset = iso[1]

        print(self._tile_view.size)
        print(self._buffer.get_size())

        # center the buffer on the screen
        self._x_offset += (self._buffer.get_width() - self.view_rect.width) // 2
        self._y_offset += (self._buffer.get_height() - self.view_rect.height) // 4

        # adjust the view if the view has changed without a redraw
        dx = int(left - self._tile_view.left)
        dy = int(top - self._tile_view.top)
        view_change = max(abs(dx), abs(dy))

        # force redraw every time: edge queuing not supported yet
        self._redraw_cutoff = 0

        if view_change and (view_change <= self._redraw_cutoff):
            self._buffer.scroll(-dx * tw, -dy * th)
            self._tile_view.move_ip(dx, dy)
            self._queue_edge_tiles(dx, dy)
            self._flush_tile_queue()

        elif view_change > self._redraw_cutoff:
            # logger.info('scrolling too quickly.  redraw forced')
            self._tile_view.move_ip(dx, dy)
            self.redraw_tiles()
center the map on a "map pixel"