0003907: Wall collapsed even with support, left floating downward slope beside still standing wall - Dwarf Fortress Bug Tracker

ID	Project	Category	View Status	Date Submitted	Last Update

0003907	Dwarf Fortress	Dwarf Mode -- Environment	public	2011-01-25 03:07	2011-01-26 04:33

Reporter	Chthon	Assigned To
Priority	normal	Severity	minor	Reproducibility	have not tried
Status	new	Resolution	open
Platform	PC	OS	Windows 7	OS Version	Pro 64bit
Product Version	0.31.18

Summary	0003907: Wall collapsed even with support, left floating downward slope beside still standing wall
Description	I'm not sure why this happened, but a wall that I dug out part of underneath collapsed. It was 2 tiles by 1 tile connected on the north/south. The south face collapsed onto my miner causing him grevious injury when it was dug out. The north face is still freestanding as I did not touch it. As evidence of this, the downward slope on the south part is still stuck beside the north slope, however the upward slope is missing. This last part may be related to 0001295
Steps To Reproduce	This was an unusual collapse. I have not tried to reproduce it. It may be related to the fact that I dug out in a delta where a water source started.
Additional Information	My current situation makes it difficult to upload files. I will try to upload before and after this accident as I have seasonal saves. You can then try to dig out the same spot and see if you get a similar result.
Tags	No tags attached.

Quietust 2011-01-25 05:42 reporter ~0014926	Might this be related to 0001547?

Logical2u 2011-01-25 06:57 manager ~0014929	A contiguous piece of terrain - such as your 2x1 chunk - shouldn't fall unless it's completed unsupported and doesn't fall "in pieces". did the entire 2x1 piece collapse, or did something else collapse? You say the south-face collapsed, so I assume you mean the segment off of the 2x1 piece heading to the south. Was that section only connected by ramps, for example as follows? `. - floor X - wall / - ramp .. /X.\ /X...\` In this diagram the right-hand side isn't really supported by anything and so you'd expected it to collapse.

Chthon 2011-01-25 10:44 reporter ~0014931 Last edited: 2011-01-25 13:00	Half the face fell. it was like so: `level 1 2 3 4 5 ... ... ... ... ... .X. .X. .X. .X. .,. .X. .X. .X. ./. .\. ... ... ... ... ... I dug it out like this: ... ... ... ... ... .X. .X. .X. .X. .,. ... .X. .X. ./. .\. ... ... ... ... ... Suddenly it collapsted like this: ... ... ... ... ... .X. .X. .X. .X. .,. .X. .X. ... ... .\. ... ... ... ... ...` This was not how a collapse should have happened, yet it did. Edit: I can't make the code line up like you did in yours. Maybe it'd help if you shared how you did it?

Logical2u 2011-01-25 13:02 manager ~0014932	There's a code command - treat it like an html command (IE angled brackets) rather than a BB-code command. I'm reading Up is to the Right, right? There were no gaps or anything like that?

Chthon 2011-01-26 04:33 reporter ~0014935	You are correct, no gaps no nothing. Up is to the right.

Date Modified	Username	Field	Change
2011-01-25 03:07	Chthon	New Issue
2011-01-25 05:42	Quietust	Note Added: 0014926
2011-01-25 06:57	Logical2u	Note Added: 0014929
2011-01-25 10:44	Chthon	Note Added: 0014931
2011-01-25 10:46	Chthon	Note Edited: 0014931
2011-01-25 10:46	Chthon	Note Edited: 0014931
2011-01-25 10:48	Chthon	Note Edited: 0014931
2011-01-25 10:50	Chthon	Note Edited: 0014931
2011-01-25 13:00	Logical2u	Note Edited: 0014931
2011-01-25 13:02	Logical2u	Note Added: 0014932
2011-01-26 04:33	Chthon	Note Added: 0014935