Dwarf Fortress Bug Tracker - Dwarf Fortress
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IDProjectCategoryView StatusDate SubmittedLast Update
0003885Dwarf FortressPathfindingpublic2011-01-12 17:362014-01-26 08:56
Reporteruncool 
Assigned ToFootkerchief 
PrioritynormalSeveritymajorReproducibilityhave not tried
StatusresolvedResolutionunable to reproduce 
PlatformOSOS Version
Product Version0.31.18 
Target VersionFixed in Version 
Summary0003885: Flying forgotten beast can path through unpathable places
DescriptionThis has happened twice. The first time, a forgotten beast appeared unexpectedly. I walled off the entrance to my fort, hoping to create another entrance elsewhere and eventually trap the beast where it could do no harm. This was as follows:
Symbols: O = wall, X = staircase

Top level:
OO
OX

Next level:
XO
OO

This worked; the forgotten beast was unable to path into my fort.

I then opened up the second entrance (far from the first entrance), thinking the beast would path to it, and that I might be able to trap it while it was using the second path. However, as soon as the second entrance to my fort was opened, the beast was able to path through the first entrance instead, killing everyone.

This happened again, recently. I opened up hell, and was able to block it off. When I dug an up/down staircase in another adamantine tube, I made sure that I had not reached hell (I didn't get to see any more of hell). However, a fire phantom appeared anyway.
Steps To ReproduceNot sure. I think the being must be a flier; you must then have one open path between it and you. Close the path, then open another one (through mining).
Additional Information
TagsNo tags attached.
Relationships
child of 0000362confirmed Footkerchief Interrupted by forgotten beast -- Through 20 z-levels of solid rock with no possible path 
Attached Files
Issue History
Date ModifiedUsernameFieldChange
2011-01-12 17:36uncoolNew Issue
2011-01-13 06:16kwielandNote Added: 0014854
2011-01-13 06:17Hieronymous AlloyIssue Monitored: Hieronymous Alloy
2011-01-13 08:03FootkerchiefSummaryFliers can path through unpathable places => Flying forgotten beast can path through unpathable places
2011-01-13 08:03FootkerchiefRelationship addedchild of 0000362
2011-01-13 08:03FootkerchiefNote Added: 0014856
2011-01-25 22:58uncoolNote Added: 0014933
2011-01-25 22:59uncoolNote Added: 0014934
2014-01-26 08:56FootkerchiefNote Added: 0024364
2014-01-26 08:56FootkerchiefStatusnew => resolved
2014-01-26 08:56FootkerchiefResolutionopen => unable to reproduce
2014-01-26 08:56FootkerchiefAssigned To => Footkerchief

Notes
(0014854)
kwieland   
2011-01-13 06:16   
I've seen this as well. Similar situation to that described above. I was digging a ramp up and tunneled into a cavern with beasties. I immediately constructed a wall where the ramp had been. They came right through it. :(
(0014856)
Footkerchief   
2011-01-13 08:03   
Probably a case of 0000362.
(0014933)
uncool   
2011-01-25 22:58   
Not sure that this is a case of 362; that seems to be more related to line-of-sight, while this is pathing. No one was interrupted until the beast got through, as far as I could tell.
(0014934)
uncool   
2011-01-25 22:59   
Also, it wasn't only flying forgotten beasts that could path like that - the second time it happened it was a demon.
(0024364)
Footkerchief   
2014-01-26 08:56   
Please reopen this report or PM me on the forums if you have a save that demonstrates this bug in the latest release.