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IDProjectCategoryView StatusDate SubmittedLast Update
0001981Dwarf FortressDwarf Mode -- Jobs, Constructions (walls etc)public2010-05-19 19:132019-05-20 07:52
Assigned ToLoci 
PlatformOSWindowsOS Version7
Product Version0.31.03 
Target VersionFixed in Version 
Summary0001981: Constructing wall/floor over ice ramp/stairs, followed by removing ramp/stairs, creates a "void tile"
DescriptionThere are currently issues with ice ramps.

First: Constructed Floors built over Ice ramps do not remove the down ramp designation on the z-level above the ramp.

Second: Removing a constructed floor/wall built over an ice ramp, then (d)(z) the ramp, and the result is void space that cannot be designated or built over and is impassible.
Steps To ReproduceFirst:
1) Find Ice
2) Channel/Carve Ramp
3) (b)(C)(f) over one of the revealed ramps, using any material
4) Once complete, go up one z level and see the Downward Slope

1) As above in First 1-3
2) Remove the constructed object(d) (n)
3) Remove the carved ramp (d)(z)
4) Void space will be created, possibly containing a stone of ramp material.
Tags0.40.02, construction, ice, ramp
Attached Files

- Relationships
parent of 0008400acknowledgedLoci Removing natural upwards ramps from icy brook floor produced empty tiles 
has duplicate 0002326resolvedFootkerchief Occasionally, a tile will become completely empty of all items, and count as blocked for building. 
has duplicate 0002723resolvedFootkerchief building a wall over an up stair in ice, removing it, then removing the up stair makes void, blocked tiles 
has duplicate 0005459resolvedFootkerchief Dead inoperable tiles created when carving ice 
has duplicate 0007211resolvedFootkerchief Removal of constructed wall created unusable black tile 
has duplicate 0011747resolvedlethosor Using constructions and ice, you can make dead tiles 
child of 0001265new Ramps covered with ice have no floors above, adventurer can "fly" over 
Not all the children of this issue are yet resolved or closed.

-  Notes
Footkerchief (manager)
2010-05-19 23:33

The second is this old bug:

# 001008 □ [dwarf mode][jobs][constructions] ( [^]) dig ice ramp -> build pillar -> remove pillar -> dig out ice ramp leads to a void square
akd (reporter)
2010-12-07 10:33
edited on: 2010-12-07 10:40

Encountered the second bug while doing maintenance on my winter-time well. Can provide a save if Toady thought it'd be interesting.

Edit: Actually, I'm not 100% positive that I followed the same steps, but regardless it's probably the same end result, and it's pretty clear that ice just doesn't work quite right overall.

jeturcotte (reporter)
2012-02-26 10:54

here's an example of the error: see northwest corner of tower moat [^]
eliotcougar (reporter)
2014-07-13 09:29

Wow... I didn't know this was such an old bug...
Still happens in 0.40.02
ptb_ptb (reporter)
2014-12-01 03:17


Is either related to this one or a duplicate.
Cosinus (reporter)
2019-05-20 07:52

This still happens in 44.12. I built walls over ramps, then removed them and removed the ramps. This resulted in void tiles as described in the post.

- Issue History
Date Modified Username Field Change
2010-05-19 19:13 sloshmonger New Issue
2010-05-19 19:14 sloshmonger Tag Attached: ice
2010-05-19 19:14 sloshmonger Tag Attached: construction
2010-05-19 21:15 MrWiggles Tag Attached: ramp
2010-05-19 23:33 Footkerchief Note Added: 0007044
2010-06-14 12:07 Footkerchief Relationship added has duplicate 0002326
2010-07-17 09:10 Footkerchief Relationship added parent of 0002723
2010-07-17 11:58 Footkerchief Summary Ice Ramps and Constructions => Constructing wall/floor over ice ramp/stairs, followed by removing ramp/stairs, creates a "void square"
2010-07-17 11:59 Footkerchief Summary Constructing wall/floor over ice ramp/stairs, followed by removing ramp/stairs, creates a "void square" => Constructing wall/floor over ice ramp/stairs, followed by removing ramp/stairs, creates a "void tile"
2010-07-17 11:59 Footkerchief Relationship replaced has duplicate 0002723
2010-07-17 22:55 Artanis Issue Monitored: Artanis
2010-07-25 14:25 Footkerchief Relationship added child of 0001265
2010-12-07 10:33 akd Note Added: 0014438
2010-12-07 10:40 akd Note Edited: 0014438 View Revisions
2011-04-05 07:35 Footkerchief Relationship added related to 0004191
2011-04-05 07:35 Footkerchief Relationship deleted related to 0004191
2012-02-26 10:43 Footkerchief Relationship added has duplicate 0005459
2012-02-26 10:54 jeturcotte Note Added: 0020752
2014-07-13 09:13 Footkerchief Relationship added has duplicate 0007211
2014-07-13 09:29 eliotcougar Note Added: 0026144
2014-07-13 09:29 eliotcougar Tag Attached: 0.40.02
2014-12-01 03:17 ptb_ptb Note Added: 0031235
2018-02-05 17:54 hertggf Issue Monitored: hertggf
2019-03-09 08:03 Loci Relationship added parent of 0008400
2019-03-09 08:06 Loci Assigned To => Loci
2019-03-09 08:06 Loci Status new => acknowledged
2019-05-20 07:52 Cosinus Note Added: 0039375
2021-05-08 20:27 lethosor Relationship added has duplicate 0011747

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