Dwarf Fortress Bug Tracker - Dwarf Fortress
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0010304Dwarf FortressDwarf Mode -- Environmentpublic2017-10-12 18:572017-10-13 13:52
ucbpaladin 
Loci 
normalminorhave not tried
resolvedno change required 
0.43.05 
 
0010304: Dwarf walking on air after screw pump back-pressure
I operated a screw pump for long enough to create several tiles of 7/7 water ahead of the pump, then disassembled it. The operating dwarf was flushed down the downward slope into the source (an underground pool) and was marked as underwater in a 7/7 tile. So far, so normal. After the dwarf proceeded away from the source of the flow, soon thereafter he ascended to the next z-level, suspended above the open water for several tiles of free movement, until he found land on that z-level (no slope or anything in this case) and returned to walking on land, normally.
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Issue History
2017-10-12 18:57ucbpaladinNew Issue
2017-10-13 02:09PatrikLundellNote Added: 0036784
2017-10-13 06:32ucbpaladinNote Added: 0036785
2017-10-13 06:34ucbpaladinNote Added: 0036786
2017-10-13 13:52LociNote Added: 0036787
2017-10-13 13:52LociStatusnew => resolved
2017-10-13 13:52LociResolutionopen => no change required
2017-10-13 13:52LociAssigned To => Loci

Notes
(0036784)
PatrikLundell   
2017-10-13 02:09   
If I understand your description correctly, the dwarf swam to a rock face and then climbed the rock until reaching the top, where normal walking could be resumed.
If so, nothing strange is happening. (Land) Critters ending up in water essentially enter escape mode, which enabled climbing as a means to get out of the situation. Of course, it's rather common that dorfs drown before reaching something climbable, but that's a different (non bug) issue.

As soon as the immediate crisis is over climbing knowledge gets suppressed again, however, which is why dorfs tend to die of dehydration in trees (which IS a bug).
(0036785)
ucbpaladin   
2017-10-13 06:32   
The description might not have been clear enough. Essentially, the dwarf began in a swimming (drowning?) state after being washed into the pool. So far so normal. As additional water poured into the pool above his head, he rose a z-level to hang suspended above the position where he had been swimming. At that point he wandered through the air above the pool for a bit before he stepped back onto land.
(0036786)
ucbpaladin   
2017-10-13 06:34   
On second thought, it probably was climbing. My mistake.
(0036787)
Loci   
2017-10-13 13:52   
Thanks PatrikLundell!