Dwarf Fortress Bug Tracker - Dwarf Fortress
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IDProjectCategoryView StatusDate SubmittedLast Update
0002820Dwarf FortressPathfindingpublic2010-07-24 23:262018-01-19 16:22
ReporterWarlemming 
Assigned ToToady One 
PrioritynormalSeverityminorReproducibilityhave not tried
StatusresolvedResolutionfixed 
PlatformOSOS Version
Product Version0.31.11 
Target VersionFixed in Version0.44.06 
Summary0002820: HFS creatures can emerge through vertical diagonals without HFS being officially breached
DescriptionSpoilers ahead

Aware that I was approaching Hell while mining adamantine, I dug a stairway down a fair distance and stopped, mined out all the nearby adamantine, and decided to mine another vein I could see through the magma sea. After accidently breaking into the HFS, I was surprised and Doomed when the Demons came out the other stairway which had not opened Hell.

The problem is that digging a stairway like this (Sideways):
AAAAXAA
AA..AAA
AA..AAA


(Where X is a stairway, and there is a floor between the open area at the top and that which leads to suffering) does not trigger the HFS, but can be used by the floods of horror to escape anyway.
Steps To ReproduceFind a point where you might find Hell
Save

Find the exact spot which opens it, and reload

Dig an up/down stairway just to the upper edge of Hell

Open Hell elsewhere, and enjoy
Additional Information
TagsHFS
Relationships
related to 0008383resolved Toady One Flying/swimming/climbing creatures can move vertically through diagonal gaps containing down-stairways 
Attached Files
Issue History
Date ModifiedUsernameFieldChange
2010-07-24 23:26WarlemmingNew Issue
2010-07-24 23:29WarlemmingNote Added: 0010944
2010-07-24 23:29WarlemmingTag Attached: HFS
2014-07-27 12:48FootkerchiefRelationship addedrelated to 0007130
2014-10-01 15:58FootkerchiefRelationship addedhas duplicate 0008383
2014-10-01 18:14FootkerchiefSummaryHFS does not open on slight x-axis difference, but HFS things clipping through corner => HFS creatures can emerge through vertical diagonals without HFS being officially breached
2014-10-01 18:14FootkerchiefRelationship replacedrelated to 0008383
2014-10-01 18:14FootkerchiefAssigned To => Footkerchief
2014-10-01 18:14FootkerchiefStatusnew => confirmed
2014-10-01 18:15FootkerchiefRelationship deletedrelated to 0007130
2015-01-08 18:23lethosorDescription Updatedbug_revision_view_page.php?rev_id=12728#r12728
2015-01-08 18:24lethosorNote Added: 0031798
2015-08-20 10:00PatrikLundellNote Added: 0032976
2018-01-19 16:22Toady OneStatusconfirmed => resolved
2018-01-19 16:22Toady OneFixed in Version => Next Version
2018-01-19 16:22Toady OneResolutionopen => fixed
2018-01-19 16:22Toady OneAssigned ToFootkerchief => Toady One

Notes
(0010944)
Warlemming   
2010-07-24 23:29   
The picture didn't come out right because of the dots, the X is meant to be just above to the right of them.
(0031798)
lethosor   
2015-01-08 18:24   
Wrapped the picture with < pre> and < /pre> (without spaces after the opening brackets).
(0032976)
PatrikLundell   
2015-08-20 10:00   
The issue is not restricted to HFS breaches. There is no report for either the caverns nor the magma sea when they are breached diagonally downwards by a staircase (especially nasty when you dig straight down and hit SMR, which just causes the miner to stop with no report, and you later discover magma creatures inside your fortress).