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IDProjectCategoryView StatusLast Update
0003885Dwarf FortressPathfindingpublic2014-01-26 08:56
Reporteruncool Assigned Touser6 
PrioritynormalSeveritymajorReproducibilityhave not tried
Status resolvedResolutionunable to reproduce 
Product Version0.31.18 
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).
TagsNo tags attached.

Relationships

child of 0000362 confirmeduser6 Interrupted by forgotten beast -- Through 20 z-levels of solid rock with no possible path 

Activities

kwieland

2011-01-13 06:16

reporter   ~0014854

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. :(

user6

2011-01-13 08:03

  ~0014856

Probably a case of 0000362.

uncool

2011-01-25 22:58

reporter   ~0014933

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.

uncool

2011-01-25 22:59

reporter   ~0014934

Also, it wasn't only flying forgotten beasts that could path like that - the second time it happened it was a demon.

user6

2014-01-26 08:56

  ~0024364

Please reopen this report or PM me on the forums if you have a save that demonstrates this bug in the latest release.

Issue History

Date Modified Username Field Change
2011-01-12 17:36 uncool New Issue
2011-01-13 06:16 kwieland Note Added: 0014854
2011-01-13 08:03 user6 Summary Fliers can path through unpathable places => Flying forgotten beast can path through unpathable places
2011-01-13 08:03 user6 Relationship added child of 0000362
2011-01-13 08:03 user6 Note Added: 0014856
2011-01-25 22:58 uncool Note Added: 0014933
2011-01-25 22:59 uncool Note Added: 0014934
2014-01-26 08:56 user6 Note Added: 0024364
2014-01-26 08:56 user6 Status new => resolved
2014-01-26 08:56 user6 Resolution open => unable to reproduce
2014-01-26 08:56 user6 Assigned To => user6