Dwarf Fortress Bug Tracker - Dwarf Fortress
View Issue Details
0006949Dwarf FortressDwarf Mode -- Buildings, Generalpublic2014-07-10 07:012015-01-03 11:36
Toady One 
0006949: Building in trees and then chopping down the tree leaves the building floating in the air
If you build (e.g. a cage) in a tree, or if you build a construction supported by an adjacent tree, and then chop down the tree, the building/construction does not fall or deconstruct.
Build in a tree, remove the tree.
No tags attached.
has duplicate 0007010resolved Footkerchief Cave-in not occurring when I'm pretty sure it should 
has duplicate 0008573resolved Footkerchief Unsupported land not dropping (yes, cave-ins are enabled) 
related to 0008555resolved Toady One Pathfinding is not updated when trees are cut down 
Issue History
2014-07-10 07:01shoopNew Issue
2014-07-10 20:19FootkerchiefRelationship addedhas duplicate 0007010
2014-07-10 20:20FootkerchiefNote Added: 0025665
2014-07-15 01:40accursedCursiveNote Added: 0026440
2014-07-15 01:45accursedCursiveNote Edited: 0026440bug_revision_view_page.php?bugnote_id=0026440#r9852
2014-07-15 02:02accursedCursiveNote Edited: 0026440bug_revision_view_page.php?bugnote_id=0026440#r9853
2014-07-15 02:08clanlNote Added: 0026443
2014-08-05 04:26MortusIssue Monitored: Mortus
2014-08-05 04:26MortusIssue End Monitor: Mortus
2014-08-05 04:28MortusNote Added: 0028370
2014-08-05 04:28MortusIssue Monitored: Mortus
2014-09-20 11:38SivartyNote Added: 0030272
2015-01-02 17:52FootkerchiefRelationship addedrelated to 0008555
2015-01-02 17:53FootkerchiefAssigned To => Footkerchief
2015-01-02 17:53FootkerchiefStatusnew => confirmed
2015-01-03 02:53fricyNote Added: 0031654
2015-01-03 08:07FootkerchiefNote Added: 0031660
2015-01-03 08:54DetrosNote Added: 0031663
2015-01-03 11:36Toady OneStatusconfirmed => resolved
2015-01-03 11:36Toady OneFixed in Version => Next Version
2015-01-03 11:36Toady OneResolutionopen => fixed
2015-01-03 11:36Toady OneAssigned ToFootkerchief => Toady One
2015-01-09 07:29FootkerchiefRelationship addedhas duplicate 0008573

2014-07-10 20:20   
lonn posted a save at 0007010: http://dffd.wimbli.com/download.php?id=8854&f=region1.zip [^]
2014-07-15 01:40   
(edited on: 2014-07-15 02:02)
Did this with a structure of floors and walls over a brook (Walls touching leaves)
Reattached the structure with floors, disconnected again, still floated.
Placed new walls on the other side of the strip of floor while removing the walls that touched the leaves, disconnected, still floated.
Removed the floor touching the new walls, walls floated.
Succeeded in causing a surface collapse after this 50-100 tiles away by mining, so fake support hasn't spread that distance.
Removed the floor above or near the brook, and then disconnected part of the remaining floor (Diagonal contact): Collapse.

It appears the brook may have been a factor.

2014-07-15 02:08   
I guess this is similar to the issues with ice: 0001265
2014-08-05 04:28   
Still an issue in 0.40.06.

Also works with workshops, which make all Open space tiles below them to be 'inside' after tree collapses.
2014-09-20 11:38   
Also chopping down trees with webs in them leaves uncollected webs floating in air in my current game(0.40.13 with save migrated from 0.40.12)
2015-01-03 02:53   
Confirming the floating webs after chopping down trees in 40.19, and the inaccessible webs generate tons of cancellation spam.
2015-01-03 08:07   
Midair webs are 0000595, a very different issue from floating buildings.
2015-01-03 08:54   
@Footkerchief: To me it all seems like hanging things are not updated properly sometimes. They are not noted their support is no more.