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0004655Dwarf FortressArenapublic2011-05-20 12:152011-05-20 21:17
tarrasque89 
Logical2u 
normalminoralways
resolvedduplicate 
windowsVista
0.31.21 
 
0004655: dust from cave-in has random material + buggy cave-in. update to 0004653
When testing in arena mode, I inadvertantly caused a cave-in with unsupported obsidion stone. The blocks fell through a few layers of flooring. This produced dust on several of the surrounding squares, but the dust was composed of random materials as opposed to the untyped rock in arena mode.

Additionally, as I read the cave-in physics, I don't see how the cave-in can actually happen.
Modify the lower left tower on the castle as such.
Z=3
##############
###PPPPPPPP###
###PR####RP###
###P.#..#.P###
###P......P###
###P....#.P###
###P.#..#.P###
###PR....RP###
#PPPFFFFFFPPP#
#P..........P#
#P++++++++++P#
Z=4
#P##########P#
#P##########P#
#P++++++++++P#

Use water+lave to form a row of stone directly above #PPPFFFFFFPPP#, filling in the open spaces on the above row between the two walls. This causes a cave-in which produces the dust.
This seems to be related to the earlier 0.31.x bug which caused the blocks from cave-ins to have a random material

update to 0004653. was able to reproduce the bug.
No tags attached.
duplicate of 0001835confirmed Footkerchief Arena cave-ins make clouds of "Rock" dust 
has duplicate 0004653resolved Logical2u dust from cave-in has random material 
Issue History
2011-05-20 12:15tarrasque89New Issue
2011-05-20 12:17QuietustNote Added: 0017802
2011-05-20 12:22tarrasque89Note Added: 0017803
2011-05-20 12:27tarrasque89Issue Monitored: tarrasque89
2011-05-20 12:27tarrasque89Issue End Monitor: tarrasque89
2011-05-20 21:16Logical2uRelationship addedhas duplicate 0004653
2011-05-20 21:17Logical2uNote Added: 0017809
2011-05-20 21:17Logical2uRelationship addedduplicate of 0001835
2011-05-20 21:17Logical2uStatusnew => resolved
2011-05-20 21:17Logical2uResolutionopen => duplicate
2011-05-20 21:17Logical2uAssigned To => Logical2u
2011-05-21 06:13Logical2uNote Edited: 0017809bug_revision_view_page.php?bugnote_id=0017809#r6652

Notes
(0017802)
Quietust   
2011-05-20 12:17   
Duplicate of 0001835.
(0017803)
tarrasque89   
2011-05-20 12:22   
Partially, but the cave-in shouldn't be occurring at all.
(0017809)
Logical2u   
2011-05-20 21:17   
(edited on: 2011-05-21 06:13)
Random material cave-ins are 0001835.

I'm betting the cave in is caused in pieces, not simultaneously (which I believe is where your 'can't occur!' comment comes from)...