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|ID||Project||Category||View Status||Date Submitted||Last Update|
|0004493||Dwarf Fortress||World Generation -- General||public||2011-04-11 01:25||2012-02-26 21:27|
|Assigned To||Toady One|
|Platform||x86 (AMD Athlon 7550 Dual-Core)||OS||Mandriva One||OS Version||2010 (18.104.22.168)|
|Target Version||Fixed in Version||0.34.01|
|Summary||0004493: Turtles only appear in island worlds|
|Description||If you generate a "[SIZE] REGION" world, then turtles won't be available on embark, and fishing in surface murky pools will always give "The is nothing to catch in the [region] swamps". But if you generate a "[ISLAND] REGION" world, turtles are always available on embark, and you can always catch turtles from murky pools.|
|Tags||fishing, turtle, worldgen|
Khym Chanur (reporter)
After doing some more testing:
1) Island worlds don't always give you turtles, and non-islands worlds aren't always bereft of them.
2) Checking the animals populations via "export map/gen info" from Legends mode shows that turtles are actually always present in non-islands worlds, but on average there's less of them than in island worlds. The more turtles there are in the world-wide population, the more likely they're available from export from parent civs, and the more likely you'll be able to fish them out from murky pools.
3) Non-island worlds with large non-frozen oceans have more turtles than ones with small or non-existent oceans.
From all this I'm guessing that the ocean turtle population makes it easier to find turtles in murky pools, and that turtle populations are much denser in oceans then on land with murky pools.
I believe that this is intended behavior. Animals at a site are drawn from world populations.
May be a 'turtles are too rare in murky pools' issue though.
|Could this have to do with animals being placed in contiguous biomes? Maybe a non-island world can have multiple oceans but only have turtles in one of them.|
Khym Chanur (reporter)
After doing yet more testing, I've found two things that are contributing to the problem:
1) [BIOME:ANY_POOL] seems to be broken. If I replace the turtle's single [BIOME:ANY_POOL] with six biome tags, one for each
then the average number of turtles found in non-island worlds increases, and becomes approximately the same as the number of turtles found in non-island worlds. So I'm guessing that ANY_POOL selects only saltwater during worldgen, but includes freshwater murky pools after embark.
2) A creature with many different biomes has a global population than less than what you should get from the sum off each of the biomes. I tried modding turtles so there'd be three different species, one each for fresh, brackish and salt water. When generating worlds with this mod, the average sum of the populations of all three species was about 2 to 2.5 times larger than the average population for the single turtle species which spanned all three types of water.
Or maybe 0000001 and 0000002 are the same bug, and during world gen only one biome is picked for the species to grow in.
edited on: 2011-04-12 21:16
BIOME:ANY_POOL definitely isn't broken - I've looked at a disassembly of the biome token parsing code (because I like to document the behavior of certain tokens on the wiki for modders), and ANY_POOL simply specifies biomes 30-35, which happen to be the 6 POOL biomes you've listed (in that exact order, no less).
Reminder sent to: Khym Chanur
Is this bug still present in 0.34.01?
Khym Chanur (reporter)
|The problem seems to be gone as of 0.34.02|
|2011-04-11 01:25||Khym Chanur||New Issue|
|2011-04-11 01:27||Khym Chanur||Tag Attached: fishing|
|2011-04-11 01:27||Khym Chanur||Tag Attached: turtle|
|2011-04-11 01:27||Khym Chanur||Tag Attached: worldgen|
|2011-04-12 00:12||Khym Chanur||Note Added: 0017311|
|2011-04-12 11:48||Granite26||Note Added: 0017318|
|2011-04-12 17:37||RossM||Note Added: 0017327|
|2011-04-12 20:19||Khym Chanur||Note Added: 0017330|
|2011-04-12 21:15||Quietust||Note Added: 0017331|
|2011-04-12 21:16||Quietust||Note Edited: 0017331||View Revisions|
|2012-02-17 07:49||Footkerchief||Note Added: 0019925|
|2012-02-17 07:50||Footkerchief||Tag Attached: AWAITING UPDATE|
|2012-02-17 07:50||Footkerchief||Relationship added||related to 0004500|
|2012-02-26 19:55||Khym Chanur||Note Added: 0020781|
|2012-02-26 21:26||Footkerchief||Note Added: 0020784|
|2012-02-26 21:26||Footkerchief||Status||new => resolved|
|2012-02-26 21:26||Footkerchief||Fixed in Version||=> 0.34.01|
|2012-02-26 21:26||Footkerchief||Resolution||open => fixed|
|2012-02-26 21:26||Footkerchief||Assigned To||=> Toady One|
|2012-02-26 21:27||Footkerchief||Tag Detached: AWAITING UPDATE|
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