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[puke]

quote:Originally posted by Lith:
<STRONG>"13 regions rejected". The fastest generation I eve seen. Randseed was 2006. Beautiful world was it!</STRONG>

am i to understand that we can feed the world generator seed values?  This was one of the neat things about the Imperialism games by Frog City.  World generation was random, but you could enter seeds into the generator and consistantly make the same world.

So if someone got a particularly interesting world, they could share it with their friends or post it online without uploading an entire save file.

for DF, someone might post a world-seed and say "this map has lots of dragons on it" or "lots of thriving civilizations that are at war"  or  "good fortress map with elephants and gorillias and unicorns at such-and-such"  or whatever.

is this possible?

[Draxxalon]

You can feed the world generator a seed via the command line.

(read the "command line.txt" in the root folder).

Not sure if you can tell what the seed is in a regularly generated world though.

[puke]

sweet!  this means i'll be busy for hours generating worlds on interesting phrases, and watching what comes out of them.  thanks for wasting my evening!

[Toady One]

The number you feed it is just the number of the region (like region#.sav).  This was so that an automatic script the person who requested the feature was writing wouldn't get confused.  I'm not sure what the normal way to feed a typeable seed into the Mersenne Twister is...  it has a very large initial state (624*4 bytes) that you wouldn't want to type.  I guess it could copy one 4 byte seed throughout the state space, or does that make the output too regular?  Probably good enough, anyway.

[ November 01, 2006: Message edited by: Toady One ]

[Draxxalon]

Ahh, ok, my misunderstanding  

[Gakidou]

How about, in addition to allowing you to print out a BMP of a world when it is generated, it also gave you the option of saving the seed that generated your world into a .txt file? Then players could upload the file to websites for others to download.

To make things even faster, you could instead save the state of your seed right before it generated a world accepted by the world generator, so that later players recreating the world from that seed would only build the acceptable world, and not all of the rejected worlds.

[ctrlfrk]

The save number option is quite handy for *.bat files. although im not too sure what i would want with a couple of hundred generated worlds... unless...

[ricree]

How is the initial state generated?

 In the wikipedia article's pseudocode, it uses a 32 bit seed to create the initial state.