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IDProjectCategoryView StatusDate SubmittedLast Update
0003868Dwarf FortressDwarf Mode -- Buildings, Generalpublic2011-01-03 11:562014-10-04 11:08
Assigned To 
PrioritynormalSeverityminorReproducibilityhave not tried
PlatformOSOS Version
Product Version0.31.18 
Target VersionFixed in Version 
Summary0003868: Strange tile behavior after water freezing/ice melting/building
DescriptionSome unusable tiles appeared in my fort after playing with ice.
I tried to dig ice to build some rooms in the see (smoothing ice wall), then tiled them with ice blocks. When summer came, smoothed icy wall melted, but since then i got some strange tiles you can't dig, channel, build, walk through.

Save here: [^]
Additional InformationAs i played a lot with ice in this zone (building / removing construction... I'm not sure what caused this bug.
TagsSave Included, Save Needs Testing
Attached Files

- Relationships
related to 0004372resolvedToady One occasionally get negative distance value for materials for constructions 
has duplicate 0004954resolvedDwarfu creating useless space that is permenately blocked 
child of 0001265new Ramps covered with ice have no floors above, adventurer can "fly" over 

-  Notes
Rafal99 (reporter)
2011-10-28 12:02

I have similar issue in my current fort in 0.31.25.
When water froze at winter, I dug some ice tiles in murky pools, then built walls on them. Later I deconstructed the walls, most of them left Ice floor tiles (which did not melt, but that is another bug), but 7 them left very strange "black hole" tiles.

These tiles:
-appear as completely black or show a stone boulder left from deconstructing the wall
-when viewed with (k) show completely nothing, even those containing a stone boulder
-are not walkable by dwarves
-constructions or furniture can't be built on them (shows "Blocked")
-are not minable
-digging a ramp 1 z-level below doesn't change them
-caveining something from above doesn't change them
-dropping water on them doesn't change them, but the dropped water is visible from z-level above

Save is available, PM me in the forums if you want me to upload. I am not going to delete the save.
Quietust (reporter)
2011-10-28 14:09
edited on: 2011-10-28 14:11

I've seen other problems with ice messing up the tiles underneath it - if I dig beneath a murky pool and construct walls there, the "murky pool" tiles will disappear and be replaced with "[material] block floor" when the water freezes and remelts. This gave me a bit of a nasty surprise when I went to rebuild a bunch of old "rough" constructed walls using blocks - when I removed the constructed walls, the pool drained into the room and flooded it.

Rafal99 (reporter)
2014-10-04 11:08

This one is pretty much the same bug as 0001981.

- Issue History
Date Modified Username Field Change
2011-01-03 11:56 behbehr New Issue
2011-01-03 11:56 behbehr Issue Monitored: behbehr
2011-01-03 11:56 behbehr Issue End Monitor: behbehr
2011-01-03 12:42 Dwarfu Tag Attached: Save Included
2011-01-03 12:42 Dwarfu Tag Attached: Save Needs Testing
2011-01-03 12:42 Dwarfu Relationship added child of 0001265
2011-10-28 12:02 Rafal99 Note Added: 0018922
2011-10-28 14:09 Quietust Note Added: 0018924
2011-10-28 14:11 Quietust Note Edited: 0018924 View Revisions
2011-11-10 02:18 Dwarfu Relationship added has duplicate 0004954
2012-05-21 11:20 Footkerchief Relationship added related to 0005932
2012-06-14 16:30 Footkerchief Relationship added related to 0004372
2012-06-14 16:30 Footkerchief Relationship deleted related to 0005932
2014-10-04 11:08 Rafal99 Note Added: 0030529

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