Hello, I am trying to make a compressed map file for a game I'm working
on but I'm having a bit of trouble with making changes to the compressed
file. The map files that my game creates are very big but a lot of that
data is repetitive so I what I do is I create a big empty map and then
compress it. This allows me to have massive maps within tiny files. Now
I realize they are only small because it is compressing repeated 0's but
even when the actual values of the tiles of the map are implemented they
will still be rather repetitive so the size should still remain somewhat
small.
With that being said I've been trying to find out how to write
compressed data to a compressed file. My game's map structure is
formatted in a way such that a collection of tiles is grouped into a
block. So each XZ Block contains a certain amount of tiles. What I would
like to do is when a player changes tiles of the map the map would find
the XZ Block that the modified tile is in and rewrite that entire
compressed block but with the new compressed data. From my understanding
of how the block compression works, rewriting an entire block shouldn't
be any trouble since each block is compressed separately. However, there
doesn't seem to be any way to do this. Something like
SeekableXZInputStream's "seekToBlock(int blockNumber)" function would be
perfect. Is there any reason a SeekableXZOutputStream was not made or
needed?
So my question is how possible is this and hard would it be? Are there
indexes of the locations of the XZ Blocks somewhere that would have to
be updated?
Thank you
--
*Brandon J. Fergerson*
