There are quite a few map editing tools of different stages of usability, but now there is one that can (among other things) take a map from any map editor or the server itself and apply a series of filters to this map in order to create either a completely new or a mostly similar map. Some incredibly useful features already exist such as deleting all of the lava from the map, surrounding the spawn points for water around the map with black rock, a few flat world generators and the feature that it was originally created for: Taking any map and increasing the height.
You can take a map that isn't tall enough (perhaps you want a skyscraper competition, or you need more space underground) and run it through the height filter to automatically have the map height increased and the world shifted upwards. This tool is called Mapjack and you can find information about it from the website:
** Corrupt map problem fixed! **
Layman Version: Tool failure, fixed nao.
Geek Version: Serial version ID was being messed up by one of the build tools, causing it to be incompatible with the server. This is no longer the case, the levels generated are good now :smile.gif:
More features are being worked on (a GUI for it, currently you have to use a command line or edit the included batch files) but it provides a more procedural (and later on, hopefully extendable) approach to having maps generated procedurally.
The 6/30/2009 version seems to throw an error reading a map that I haven't had happen before, the version right before it should still work for doubling the map size. I'll have to track down what happened in the new version that broke things (I just tried the spongeworld generator and it creates valid map files)
Hopefully future versions won't be so horrifying as what we've seen so far...
At least the .bat makes a backup for you.
I'm looking in to adding an interface to it so batch files don't have to be used to do everything with it, and writing a test suite so stuff stops breaking between versions. It's mostly chopped together based on requests and tested off of those without an incredibly professional screening process between releases, I'll get that fixed.
Quote from Joey90 »
I used the previous version as the link was broken when I did it, so tell me if any of these are fixed.
1 - It 'doubled' my default 64 high map to 320 (adding 256) which means that it has broken grass growing and plants dying...
2 - It replaced gold, flowers and mushrooms with air or stone
3 - Is there any way to reduce a maps size (i.e. crop) so that I can reduce my map down to 256 rather than 320.
That first one sounds strange, I'll have to look and see what happened to the math. Some of the old versions have that problem because the level editing class I copied from the wiki wrapped at the wrong value which I had to fix. Cropping can be done (nobody's asked for it yet which is why it isn't in there).