Dwarf Fortress Bug Tracker - Dwarf Fortress
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0010830Dwarf FortressDwarf Mode -- Combatpublic2018-07-11 00:152020-05-18 20:35
0010830: Falling objects (bolts, body parts, etc.) glitch through floor into rooms below
Marksdwarves train on the upper floor of two z-levels tall building on the surface, and occasionally shoot through fortifications at keas that happen to fly around. Missed bolts fall on the ground, some of them end up in the rooms level below. There are no holes between levels.
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parent of 0011011new  Catapult/Ballista projectile falls z-level through solid floor 
has duplicate 0010834resolved lethosor Archery practice bolts pass through solid floor 
has duplicate 0010786resolved Loci ammunition falling though floors 
has duplicate 0011145resolved Loci Body parts fell through ground 
Not all the children of this issue are yet resolved or closed.
Issue History
2018-07-11 00:15risusinfNew Issue
2018-07-11 00:34FantasticDorfNote Added: 0038580
2018-07-11 02:10risusinfNote Added: 0038581
2018-07-16 14:51Rafal99Note Added: 0038602
2018-07-16 17:15lethosorNote Added: 0038604
2018-07-16 17:16lethosorRelationship addedhas duplicate 0010834
2018-07-16 17:16lethosorIssue Monitored: alternativehood
2018-07-22 08:16Dekker3DNote Added: 0038626
2018-07-28 14:11LociRelationship addedhas duplicate 0010786
2018-07-28 14:12LociAssigned To => Loci
2018-07-28 14:12LociStatusnew => confirmed
2018-07-30 13:34KvallNote Added: 0038664
2018-07-31 06:14risusinfNote Added: 0038666
2018-08-01 01:24PatrikLundellNote Added: 0038667
2018-08-05 12:42LociNote Added: 0038687
2018-08-05 12:43LociNote Edited: 0038687bug_revision_view_page.php?bugnote_id=0038687#r15728
2019-01-27 15:24LociRelationship addedparent of 0011011
2019-09-03 16:00LociRelationship addedhas duplicate 0011145
2019-09-03 16:01LociSummaryBolts glitch through surface into rooms below => Falling objects (bolts, body parts, etc.) glitch through floor into rooms below
2019-09-03 16:03LociNote Added: 0039501
2020-05-18 20:35evilmasteryodaNote Added: 0040558
2022-03-13 18:02SusanIssue Monitored: Susan

2018-07-11 00:34   
If you could please attach your game-save demonstrating this (copy pasted 'region' file in 'data' -> 'save' in the DF folder or enclose it in a ZIP after making a backup for you to continue playing), it would be a big help as besides from the description there isn't a method for attempting to recreate the issue.

A convenient place to upload is the dwarf fortress file depot (DFFD) but some people use their own download mirrors of choice.

http://dffd.bay12games.com/ [^]
2018-07-11 02:10   
Yeah, i was about to, but distracted. Here: http://dffd.bay12games.com/file.php?id=13883 [^]
2018-07-16 14:51   
I can confirm this. Invaders shot bolts at the animals on the roof (Z-level: +2) of my fort. Somehow some bolts ended on Z-level 0 inside the fort.
2018-07-16 17:15   
Cincotta1's save from 0010834: http://dffd.bay12games.com/file.php?id=13891 [^]
2018-07-22 08:16   
I logged in to report this same issue. I have a save file where there's a perfectly fine bolt-moat for catching bolts from archery practise, but instead the bolts go right through the floor to sit in my stockpiles and workshops the level below that. All of this is underground. As you already have two save files for this, would a third help?
2018-07-30 13:34   
I've been battling this glitch in several forts and as a temporary fix, at least in the case of training areas with bolt-catcher moats, is to have an untouched layer buffering below the moat, keeping the glitch from ignoring the ground. All in all this is super minor and you can make trillions of bone bolts with zero effort, so the moat is almost unnecessary.
2018-07-31 06:14   
Seems like body parts can glitch through as well. Some of them stuck within a workshop.

http://dffd.bay12games.com/file.php?id=13936 [^]
2018-08-01 01:24   
The body parts in workshops issue may or may not be the same, but I've had it in the past both from birds shot down onto workshops and bits scattered and stuck when killing reanimated skin.
2018-08-05 12:42   
(edited on: 2018-08-05 12:43)
Things getting stuck in impassable workshop tiles is 0002197. Severed body parts falling through floors is new, and likely the same underlying cause as bolts falling through floors.

2019-09-03 16:03   
Nottipyy provided a save to reproduce glitching body parts in 0011145:

http://dffd.bay12games.com/file.php?id=14520 [^]
2020-05-18 20:35   
I can confirm this is still occurring in version 47.04, Archery ranges easily reproduce this with a channeled out tile with floors between the bottom and 1 z level bellow the channel under the archery targets.

Another way to reproduce this is to mine out the majority of the first -z level and have combat and hunting occur on the main z level map, body parts and arrows will start to appear -1z even if it didn't occur anywhere near the entrance to the -1 z level.