Dwarf Fortress Bug Tracker - Dwarf Fortress
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IDProjectCategoryView StatusDate SubmittedLast Update
0004315Dwarf FortressFlowspublic2011-03-24 09:102011-03-27 15:44
ReporterGreiger 
Assigned ToToady One 
PrioritynormalSeveritymajorReproducibilitysometimes
StatusresolvedResolutionfixed 
PlatformOSOS Version
Product Version0.31.22 
Target VersionFixed in Version0.31.23 
Summary0004315: Water causes deletion of ramps and stairs submerged inside (possibly due to grass)
DescriptionWater in version .22 appears to be causing ramps and stairs submerged inside it to be disappearing. But it seems to require grass to be growing on the tiles, or flowing water to do it.

It would actually be kinda feature-y since I would expect water to slowly wear away ramps or fragile structures like stairs, but in the deletion of stairs it ends up blocking flow from going down the missing stairs, and in the case of ramps it leaves downward ramps hanging in the air.
Steps To ReproduceDig into a water source allowing it to fill into a channel made of ramps or stairs. Allow grass to grow in the water. Watch as ramps slowly disappear over a few minutes.
Additional InformationI have not been able to determine exactly weather it's grass or flowing water that makes the stuff vanish. As it requires the water to flow for some time. And when I tested that, I did so by breaching the cavern and draining it there, which introduced underground grass into the water.
Tagsflows, ramps, stairs
Relationships
has duplicate 0004335resolved Footkerchief Cave with broken half-slopes 
has duplicate 0004520resolved Dwarfu Incomplete slopes in caverns 
Attached Files
Issue History
Date ModifiedUsernameFieldChange
2011-03-24 09:10GreigerNew Issue
2011-03-24 09:12GreigerTag Attached: ramps
2011-03-24 09:12GreigerTag Attached: stairs
2011-03-24 09:12GreigerTag Attached: 0.31.22
2011-03-24 09:12GreigerTag Attached: flows
2011-03-24 09:33FootkerchiefTag Detached: 0.31.22
2011-03-24 11:02GreigerNote Added: 0016518
2011-03-24 11:03GreigerNote Edited: 0016518bug_revision_view_page.php?bugnote_id=0016518#r6159
2011-03-24 11:24LoSboccaccIssue Monitored: LoSboccacc
2011-03-25 01:37Toady OneStatusnew => resolved
2011-03-25 01:37Toady OneFixed in Version => 0.Upcoming
2011-03-25 01:37Toady OneResolutionopen => fixed
2011-03-25 01:37Toady OneAssigned To => Toady One
2011-03-25 10:39FootkerchiefRelationship addedhas duplicate 0004335
2011-03-27 15:44LoSboccaccIssue End Monitor: LoSboccacc
2011-07-19 22:06DwarfuRelationship addedhas duplicate 0004520

Notes
(0016518)
Greiger   
2011-03-24 11:02   
(edited on: 2011-03-24 11:03)
According to another person (Ahonek) experiencing a similar issue it seems to happen to muddied tiles as well without water. The information is leading me to belive grass is the culprit, not flows so much. Also it seems to be related to grass dying on the tiles more than just the grass itself.

Relevant post:
http://www.bay12forums.com/smf/index.php?topic=80433.msg2108429#msg2108429 [^]