0004493: Turtles only appear in island worlds

Notes
(0017311) Khym Chanur (reporter) 2011-04-12 00:12	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.

(0017318) Granite26 (reporter) 2011-04-12 11:48	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.

(0017327) RossM (reporter) 2011-04-12 17:37	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.

(0017330) Khym Chanur (reporter) 2011-04-12 20:19	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 * POOL_TEMPERATE_FRESHWATER * POOL_TEMPERATE_BRACKISHWATER * POOL_TEMPERATE_SALTWATER * POOL_TROPICAL_FRESHWATER * POOL_TROPICAL_BRACKISHWATER * POOL_TROPICAL_SALTWATER 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.

(0017331) Quietust (reporter) 2011-04-12 21:15 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).

(0019925) Footkerchief (manager) 2012-02-17 07:49	Reminder sent to: Khym Chanur Is this bug still present in 0.34.01?

(0020781) Khym Chanur (reporter) 2012-02-26 19:55	The problem seems to be gone as of 0.34.02

(0020784) Footkerchief (manager) 2012-02-26 21:26	Awesome.

Issue History
Date Modified	Username	Field	Change
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