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|ID||Project||Category||View Status||Date Submitted||Last Update|
|0009503||Dwarf Fortress||World Generation -- General||public||2016-01-22 12:26||2016-10-27 09:12|
|Target Version||Fixed in Version|
|Summary||0009503: Dwarf civilizations rarely actually die out, instead remain "dying" for centuries|
|Description||Back in v0.40.x, dead dwarven civilizations were reasonably easy to generate, and proved a fair challenge--no trade caravans, no immigrants after the two hard-coded waves, and no nobles.|
In v0.42.x, however, it is common to see a dwarf civilization whose last sites and historical figures died out in the first 100 years still considered "dying" 900 years later. If you start a fortress from such a dying civilization, the game will spawn infinite caravans and immigrants out of thin air, and one of your dwarves will assume the monarchy.
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edited on: 2016-10-27 10:00
I believe the reason for the stubborn longevity of civs lies in the structure DFHack calls df.global.world.entity_populations. I've observed the entry associated with the dwarven civ, and the counts  entry contains the number of dwarves in the civ. After the mountainhome (and only site) is destroyed, this number may fluctuate a little for a while and then stabilize. Exported legends info claims the civ has no members, and forcing this field to become zero before accepting a world results in a dead civ (I've only tried with civs that ought to be dead) in the attempts I've made.
Presumably, the code handling refugees can sometimes "forget" them and leave them in a limbo where they can neither age, breed, come to harm.
Edit: I forgot to mention that my investigation was done on 0.43.03 rather than 0.43.05, but I have no reason to suspect the logic has changed in the mean time.
|2016-01-22 12:26||Loci||New Issue|
|2016-10-27 09:12||PatrikLundell||Note Added: 0036008|
|2016-10-27 10:00||PatrikLundell||Note Edited: 0036008||View Revisions|
|2020-02-12 11:49||Huntthetroll||Issue Monitored: Huntthetroll|
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