View Issue Details

IDProjectCategoryView StatusLast Update
0001932Dwarf FortressDwarf Mode -- Itemspublic2014-08-09 13:26
Reportermusicmastermsh Assigned Touser6 
PrioritynormalSeverityminorReproducibilityhave not tried
Status confirmedResolutionopen 
Product Version0.31.03 
Summary0001932: Ice over water cave-in produces blocks of rock and "Unknown"
DescriptionHad a wooden constructed wall built out over some water... the water froze, so I went to remove the wall while I could get at it. The wall came down really quick, and I went about my business. Spring time came, and the river thawed... but the areas that had wall over them still showed up as an ice floor... with water on the river floor beneath them. Floating ice? Maybe... but it wouldn't melt even as spring progressed. I went to channel the floors out, and they caved in, leaving a few blocks of dolomite rubble and two blocks of "Unknown". All blocks appeared as "open space" from above. After refreezing, I can dig into the dolomite. I can't do anything to the "Unknown".
Steps To ReproducePlay with ice?
Additional InformationI have a save for this, it's in 31.04 now; I don't know how to post saves for your viewing pleasure.
TagsNo tags attached.

Relationships

related to 0001265 new Ramps covered with ice have no floors above, adventurer can "fly" over 
has duplicate 0002106 closeduser6 Unmeltable ice floors 
has duplicate 0004260 resolveduser6 Floor glitches occur when ice falls and melts in a cave-in 
has duplicate 0007889 resolveduser6 Ice-Drop, "Unknown" tile result 
has duplicate 0007923 resolvedlethosor Muddy Unknown and Unknown Tiles 
related to 0001176 new Ice Cave-ins for water in Glaciers producing odd results. 
related to 0004257 resolveduser6 Infinite Cave-In Loop makes a fortress unplayable, even on reclaim 
related to 0000682 new Dropping large batch of ice into the stone layer (embarked on a glacier) didn't melt all the water at once. 
related to 0004684 resolveduser6 Bugged area appeared in cavern while playing. 
related to 0004941 new Infinite Cave-In Loop in glacier 

Activities

Logical2u

2010-05-17 18:19

manager   ~0006908

You haven't done any modding, have you? I encountered this back in 40d after attempting to mod out an aquifer using a tool.

You can upload saves using the Dwarf Fortress File Depot, http://dffd.wimbli.com/. It might be helpful if you could also produce a save before the cave in, to show how the "unknown" rock was produced.

musicmastermsh

2010-05-17 18:47

reporter   ~0006910

http://dffd.wimbli.com/file.php?id=2365

The pre-cavein state shouldn't be hard to recreate. Wooden wall over ice, let it thaw and refreeze, remove wall. When it thaws again, look for ice that remains.

user6

2010-05-17 20:50

  ~0006921

Last edited: 2010-06-19 12:17

An answer to Logical2u's question about modding would be helpful.

Anyway, this is probably related to one or more of the old bugs collected at 0001206:0003734, most likely these:

# 000885 □ [dwarf mode][jobs][constructions] (http://www.bay12games.com/forum/index.php?topic=20102.0) placing a construction over an obsidian floor made on a lake and then removing it left a loam behind
# 000880 □ [dwarf mode][environment] (http://www.bay12games.com/forum/index.php?topic=7013.0) after ice melted in a channel, the square became "muddy unknown"
# 000667 □ [dwarf mode][jobs][designations] (http://www.bay12games.com/forum/index.php?topic=9464.0) caving in ice from a pool down one level resulted in open space over rock

musicmastermsh

2010-05-17 21:13

reporter   ~0006922

Nothing significant or related, no.

Now that I think about it, the floating ice is just as strange as what happened to it after I mined it...

o_OWTFace

2010-05-21 11:37

reporter   ~0007134

I can confirm this. Some combination of natural and constructed ice stairways in the middle of a frozen ocean collapsed when it thawed (which means one of those types didn't melt properly). One tile became a black square unknown tile just floating there. Sometime after that the game would crash when I looked in the glob section of stocks, but that could be related to "liquid [10]" sorts of bugs that I was also getting.

musicmastermsh

2010-06-19 11:57

reporter   ~0008688

This is still happening in 31.05, I'll pick up 31.07 now that it's out and try it there.

hyndis

2010-06-19 12:16

reporter   ~0008693

This may be an old bug. I've seen this happen even in 40D.

It involved carving ramps into a glacier and constructing things over the ramp. The square ended up turning black, just an empty void. Could never build anything there or do anything with that square ever again.

DDR

2011-05-09 15:33

reporter   ~0017674

I just reproduced this bug, or something like it, in 31.25. In this case, I built a tower on ice during the winter. When summer came, and the ice melted, the tower hovered there until I loaded a save. Then, it came crashing down, and left some muddy unknown where the stairwell was. Construction materials: Stone near the bottom, ice near the top.

Thanks.

user6

2014-08-09 13:25

  ~0028675

o0NoobHunter0o posted a save at 0007923: http://dffd.wimbli.com/file.php?id=9331

Issue History

Date Modified Username Field Change
2010-05-17 18:12 musicmastermsh New Issue
2010-05-17 18:19 Logical2u Note Added: 0006908
2010-05-17 18:47 musicmastermsh Note Added: 0006910
2010-05-17 20:50 user6 Note Added: 0006921
2010-05-17 20:56 user6 Note Edited: 0006921
2010-05-17 20:57 user6 Note Edited: 0006921
2010-05-17 21:13 musicmastermsh Note Added: 0006922
2010-05-21 11:37 o_OWTFace Note Added: 0007134
2010-05-30 01:34 user6 Relationship added has duplicate 0002106
2010-06-19 11:57 musicmastermsh Note Added: 0008688
2010-06-19 12:16 hyndis Note Added: 0008693
2010-06-19 12:17 user6 Note Edited: 0006921
2011-03-21 06:51 user6 Relationship added related to 0001265
2011-03-26 12:50 user6 Relationship added has duplicate 0004260
2011-03-30 10:26 user6 Relationship added related to 0001176
2011-03-30 10:38 user6 Relationship added related to 0004257
2011-04-01 12:58 user6 Relationship added related to 0000682
2011-05-09 15:33 DDR Note Added: 0017674
2011-07-10 12:24 user11 Relationship added related to 0004684
2011-12-07 09:41 user6 Relationship added related to 0004941
2014-08-07 04:49 lethosor Relationship added related to 0007889
2014-08-09 11:20 lethosor Relationship added parent of 0007923
2014-08-09 11:21 lethosor Relationship replaced related to 0007923
2014-08-09 13:25 user6 Relationship replaced has duplicate 0007923
2014-08-09 13:25 user6 Note Added: 0028675
2014-08-09 13:26 user6 Assigned To => user6
2014-08-09 13:26 user6 Status new => confirmed
2014-08-10 10:44 user6 Relationship replaced has duplicate 0007889