Dwarf Fortress Bug Tracker - Dwarf Fortress
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0000826Dwarf FortressDwarf Mode -- Jobs, Designationspublic2010-04-08 14:452012-05-20 14:56
schilcote 
Footkerchief 
highmajoralways
resolvedduplicate 
WindowsWindowsVista
0.31.01 
 
0000826: Dwarves channel out from under selves and fall
I just lost a miner while channeling out a cistern. They worked from left to right like they always do, but the stairway back up was on the left side of the screen, and I wasn't fast enough to designate a new stairway. They did the tile they were standing on last, but they still dug it out while upon it. They did it twice.
Designate an area for channeling that has nothing below it and no way up from the right side.
channel
duplicate of 0005877confirmed Toady One Miners channel tile they're standing on, resulting combat report is malformed 
Issue History
2010-04-08 14:45schilcoteNew Issue
2010-04-14 12:56lord_chaos22000Issue Monitored: lord_chaos22000
2010-04-14 16:09smjjamesNote Added: 0003571
2010-04-19 01:17JohnLukeGNote Added: 0004199
2010-04-22 01:50Sean MirrsenNote Added: 0004561
2010-04-22 02:08RiceMunkNote Added: 0004563
2010-04-22 02:44KennelTag Attached: channel
2010-04-23 02:41Sean MirrsenNote Added: 0004696
2010-05-05 20:08quatchNote Added: 0006232
2010-05-05 20:09quatchIssue Monitored: quatch
2010-05-06 07:01FunkyWaltDoggNote Added: 0006267
2010-05-06 07:02FunkyWaltDoggNote Edited: 0006267bug_revision_view_page.php?bugnote_id=0006267#r2341
2011-07-23 09:19Logical2uRelationship addedhas duplicate 0004778
2012-05-20 14:56FootkerchiefRelationship addedduplicate of 0005877
2012-05-20 14:56FootkerchiefStatusnew => resolved
2012-05-20 14:56FootkerchiefResolutionopen => duplicate
2012-05-20 14:56FootkerchiefAssigned To => Footkerchief
2014-01-27 20:49FootkerchiefRelationship deletedhas duplicate 0004778

Notes
(0003571)
smjjames   
2010-04-14 16:09   
This has been around since, forever I believe. Its more a case of Dwarven Stupidity.

From the sound of it, your dwarves channeled themselves in with no way out, except down.
(0004199)
JohnLukeG   
2010-04-19 01:17   
In previous versions, my dwarves would never channel out a tile while standing on it unless there was no other option. This is probably caused by dwarves assuming there will be a nice, safe ramp when they finish digging, but end up falling through the void to their deaths.
(0004561)
Sean Mirrsen   
2010-04-22 01:50   
This seems to be the same case though. There was nothing left to dig except the tile under their feet, so they dug it away. It'd happen the same way in 40d.
(0004563)
RiceMunk   
2010-04-22 02:08   
Just the other day I had one of my dwarves dig a hole under themselves in the middle of a long vertical axis shaft I'm intending to use to power my magma pump stack. Said dwarf ended up splattered all over the rock floor about ten levels below.
And this he did with a perfectly valid example of solid ground right next to him where he could have stood instead while digging the channel.
I was mostly amused by this though, even if it was a bit sad to lose a legendary miner to such a fate.
(0004696)
Sean Mirrsen   
2010-04-23 02:41   
Are you sure he was indeed standing on the place he was digging, rather than that he merely walked onto the empty space he created thinking there was a ramp? I'll have to test this one out sometime.
(0006232)
quatch   
2010-05-05 20:08   
I've had this happen, although I did not observe if they were channeling under themselves, or just walking into the freshly channeled space. If there is an open space below the floor you are channeling dwarves will occasionally decide to fall through. 31.03.
(0006267)
FunkyWaltDogg   
2010-05-06 07:01   
(edited on: 2010-05-06 07:02)
In 40d you'd often see dwarves channel floors out from under each other, but I never once saw a lone miner channel out the tile he was standing on if there was an adjacent tile available to work from. This seems to be a bug introduced with the change to the channeling designation; even though dwarves are still able to channel from an adjacent tile, standing on the designated tile to do the job is no longer the last resort.