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IDProjectCategoryView StatusLast Update
0002982Dwarf FortressDwarf Mode -- Environmentpublic2010-08-09 13:14
ReporterAlEinstein Assigned To 
PrioritynormalSeveritymajorReproducibilityalways
Status newResolutionopen 
PlatformAcer LaptopOSWindows Vista Home Premium 
Product Version0.31.12 
Summary0002982: Dirt caving in on supports will float when the supports are removed
DescriptionI was setting up my fortress in a way in which I could use a lever to cause a cave in which was severe enough to completely block of my entrance, so I made a simple set up to see if it would work. I caused a 2 x 2 area of rock to cave in on four supports directly under this rock. When I removed the supports, the rock on top of it did not fall, but it floated in the air. I redid this a few times and it always happened this way.
Steps To ReproduceOn level -5 I dug out a 2 x 2 room which would be blocked off by the cave in. On the four tiles of this room I built four supports which would catch the initial cave in so that I could cause another one by removing the supports at the pull of a lever. Directly above that on level -4 I dug out another 2 x 2 room. The floor of this room would be hit by the cave in from above and fall with it onto the supports in the room on level -5. Above this room on level -3 I dug a square channel leaving a 2 x 2 section on this center which would be the part that would cave in. Above this on level -2 I again dug a square channel to prepare the cave in. Above this on level -1 I again dug a square channel and inside the square channel I dug out the 2 x 2 section to separate it from the cavern causing it to cave in. It would normally have fallen to the room on level -5 but since I had supports there, it fell on top of the supports and remained on level -4, leaving the supports fully functional. When I pulled a lever to remove all of the supports, the 2 x 2 section of rock remained floating on level -4, although it was completely disconnected from the rest of the cavern.
TagsNo tags attached.

Relationships

related to 0004864 acknowledgedlethosor Buildings do not fall when floors/walls below them are removed 

Activities

user6

2010-08-08 14:25

  ~0011637

Last edited: 2010-08-08 14:25

It might be helpful to upload a save where such a cave-in is about to occur. http://dffd.wimbli.com/

AlEinstein

2010-08-09 11:04

reporter   ~0011665

I uploaded it on the file depot.

user6

2010-08-09 12:53

  ~0011668

Thanks! It's also helpful to post the link here, like so: http://dffd.wimbli.com/file.php?id=2920

AlEinstein

2010-08-09 13:14

reporter   ~0011670

You're welcome and sorry, I wasn't thinking.

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Issue History

Date Modified Username Field Change
2010-08-08 13:37 AlEinstein New Issue
2010-08-08 14:25 user6 Note Added: 0011637
2010-08-08 14:25 user6 Note Edited: 0011637
2010-08-09 11:04 AlEinstein Note Added: 0011665
2010-08-09 12:53 user6 Note Added: 0011668
2010-08-09 13:14 AlEinstein Note Added: 0011670
2015-01-28 16:51 lethosor Relationship added has duplicate 0008774
2015-01-28 16:52 lethosor Relationship deleted has duplicate 0008774
2015-01-28 16:53 lethosor Relationship added related to 0004864