0001623: Dwarves can have preferences for non-existing body parts like bird/worm teeth.

Notes
(0005621) Logical2u (manager) 2010-04-28 20:08	You haven't made any modifications to the RAWs have you?

(0005627) Sirocco (reporter) 2010-04-28 20:42	No, it's completely unmodded.

(0005629) Logical2u (manager) 2010-04-28 20:54	Well in the RAWs all birds do technically have teeth, since they use the standard body plan (Which includes teeth). I guess since it's an acceptable material, it's also an acceptable preference. Looking through a fort I was bugtesting, one person likes thornback ray teeth, and another that likes gray squirrel leather. Probably not intentional, but probably not a quick fix either.

(0005642) Footkerchief (manager) 2010-04-29 00:32 edited on: 2010-04-29 00:32	I don't think this is a material preference in the sense of METAL/STONE/GEM_PREF. I think it's a food preference that's not checking the edibility tags properly.

(0019001) ellindsey (reporter) 2011-11-22 11:25	This is definitely a material crafting preferences. Dwarves can form preferences for craftable materials (bone, leather, teeth, etc) from creatures which those materials cannot be produced from. This is a problem especially when nobles have a preferences for those materials and then start passing mandates for penguin teeth objects or whatever. This happens because those creatures have the materials in question as part of their creature definition, and those materials have flags which note them as being usable for crafting. When choosing materials that a dwarf may like, DF only looks at what materials are defined without checking if it's possible for them to exist or be produced. I have created a manual fix for this, in the form of a Python script which edits the raw files and either removes impossible-to-produce materials or modifies them to be unusable for crafting (and therefore qualified for material preferences). This does require some major reworking of the raws, as each creature has to have its material templates custom-tweaked. DF should really check to see if materials can actually be produced, and ideally check to see if the dwarven civilization in question has ever encountered those materials, rather than give dwarves preferences for completely imaginary materials.

(0019007) kwieland (reporter) 2011-11-23 13:19	Does that explain the preference for Slade?

(0019008) ellindsey (reporter) 2011-11-23 17:48	Having a preference for Slade is due to DF not checking to see if a material has [UNDIGGABLE] or [DEEP_SPECIAL] when looking for preferences. It really should. I don't know if it's possible to fix this by raw editing, I suspect if you made Slade no longer available as a valid stone you'd break the game.

Issue History
Date Modified	Username	Field	Change
2010-04-28 19:46	Sirocco	New Issue
2010-04-28 20:08	Logical2u	Note Added: 0005621
2010-04-28 20:42	Sirocco	Note Added: 0005627
2010-04-28 20:54	Logical2u	Note Added: 0005629
2010-04-29 00:32	Footkerchief	Note Added: 0005642
2010-04-29 00:32	Footkerchief	Note Edited: 0005642	View Revisions
2010-04-29 00:33	Footkerchief	Summary	Dwarf has a particularly odd preference. => Dwarf has a preference for 'blue jay tooth'
2010-04-29 00:44	Footkerchief	Issue Monitored: Footkerchief
2011-07-31 05:33	Dwarfu	Relationship added	related to 0003676
2011-07-31 06:42	Footkerchief	Relationship replaced	parent of 0003676
2011-07-31 06:42	Footkerchief	Relationship added	related to 0004665
2011-07-31 06:43	Footkerchief	Relationship replaced	related to 0003676
2011-07-31 06:44	Footkerchief	Relationship added	related to 0004735
2011-10-14 07:16	Knight Otu	Relationship added	related to 0004924
2011-11-22 11:25	ellindsey	Note Added: 0019001
2011-11-23 13:19	kwieland	Note Added: 0019007
2011-11-23 17:48	ellindsey	Note Added: 0019008
2012-02-26 11:47	Buglist	Issue Monitored: Buglist
2012-03-30 06:40	Buglist	Issue End Monitor: Buglist
2013-01-06 09:27	Dwarfu	Relationship added	has duplicate 0006276
2014-01-26 11:12	Footkerchief	Relationship replaced	has duplicate 0004735
2014-01-26 11:17	Footkerchief	Relationship added	has duplicate 0005674
2014-01-29 10:30	Footkerchief	Relationship added	related to 0004950
2015-09-17 23:49	Knight Otu	Relationship added	has duplicate 0009072
2015-09-17 23:50	Knight Otu	Summary	Dwarf has a preference for 'blue jay tooth' => Dwarves can have preferences for non-existing body parts like bird/worm teeth.
2015-09-17 23:52	Knight Otu	Assigned To	=> Knight Otu
2015-09-17 23:52	Knight Otu	Status	new => confirmed
2018-04-13 11:59	Huntthetroll	Issue Monitored: Huntthetroll
2018-11-12 12:30	Loci	Relationship added	child of 0010954