0000895: Items disappear (become invisible) after getting pushed by flowing water, burning in magma, or encased in ice

(0002433)
Footkerchief (manager)
2010-04-09 15:01

Yeah, there was an old bug where items that got pushed around by flowing water would become invisible. Guess it's still around.

(0002435)
kaefermelder (reporter)
2010-04-09 15:05

k - added a tag "old bug?". pretty minor anyway

(0005471)
Vastin (reporter)
2010-04-27 22:03

Confirmed. I had a soldier fall into a pool and was trying to make it shallow enough to retrieve his corpse and effects. This activity resulted in some flow and his corpse and several items disappeared.

The items still show up in stock, and if I zoom to them it selects an apparently empty square in the pool where they presumably are.

(0006328)
Footkerchief (manager)
2010-05-06 18:40

Here's the specific old bug:

# 000525 □ [dwarf mode][flows] items that were pushed around by water didn't show up with look command

(0013442)
Quietust (reporter)
2010-10-21 06:27
edited on: 2010-10-21 06:29

I just had this happen with magma - a Goblin siege managed to slaughter a Human caravan while standing inside my magma trap so I turned it on and let them have it; as a result, I now have an invisible glob of melted burning donkey cheese that won't disappear from my stocks screen.

(0016688)
Dwarfu (manager)
2011-03-27 15:49

This also happens to anything that gets encased in ice - you can't 'k' over the items, though the stocks screen still lists them and you can zoom to them.

(0016691)
Dwarfu (manager)
2011-03-27 17:39

See note at 0002884:0011249 for a sock that was lost in magma and is generating spam messages for claiming attempts.

(0016766)
SocietalEclipse (reporter)
2011-03-29 10:51

This happens constantly for me with my magma goblin dumping chamber.

1. Fill chamber with magma
2. Drop in 20+ armed/armored goblins to ensure enough iron items left over. Testing with just a few goblins may or may not reproduce bug.
3. Empty chamber into larger cooling chamber via a door switch. The stack of iron helms and such will scatter into the second chamber with the magma flow.
4. Wait for 1/7 magma to cool & disappear.
5/Result. Seemingly random selection of iron items that are invisible (graphically) but if you unForbid them via stocks screen dwarves will come to drag them away. 'K' over invisible objects *before* dwarf arrives will only show visible items if both visible/invisible occupy the same spot. They reappear (graphically) the moment a dwarf picks them up.

(0017420)
InsanityPrelude (reporter)
2011-04-17 20:20

Still occurs as of 31.25.

(0017833)
foop (reporter)
2011-05-23 13:53

This is happening in my goblinite collection chamber where items are washed off the narrow path of doom by water from a large cistern above.

I've put a save on DFFD (bit big, I'm afraid, it's a mature fort): http://dffd.wimbli.com/file.php?id=4427 [^]

(0018303)
ImBocaire (reporter)
2011-07-24 06:10

I posted a bug marked as a duplicate. I'm sure it's the same issue, but I'd like to note that in my particular case, the items disappeared from the stocks menu as well.

(0019211)
flamoot (reporter)
2011-12-20 11:58

Yeah I was trying to pump water away from drowning victims so their corpses could be retrieved, and they disappeared!!

(0019474)
Dwarfu (manager)
2012-02-10 07:33

JasonMel's save from 0001581: http://dffd.wimbli.com/file.php?id=5459 [^]

It appears the body and stones, though not hidden have been displaced because of a cave-in and being in water.

See his notes at 0001581:0019462 and 0001581:0019466 and mine at 0001581:0019468.

(0019476)
JasonMel (reporter)
2012-02-10 10:49

Since it turns out that the stones may be relevant too, I should mention that the 1x2 channel the corpse is in didn't have any stones in it at all before the cave-in. They were very probably from the stone stockpile to the west that was "destroyed" by the cave-in.

(0019487)
Mezmeer (reporter)
2012-02-12 22:22

Happened to me, thankfully this has a workaround. I had about 13 dwarves claiming items from my "migrant corpse maker" which was just a walled in area which I flooded when I had the new migrants in there. When it drained, it must have activated this bug. >__>

(0020174)
Footkerchief (manager)
2012-02-19 15:23

hyp3r4ctive posted this save at 0004697: http://dffd.wimbli.com/file.php?id=4509 [^]

(0023251)
Leonidas (reporter)
2012-07-17 03:08

This bug is easy to duplicate in the object testing arena. Just have some creatures fight to generate objects, then create some cubes of water nearby. The bug appears consistently in width-one corridors, less consistently in open areas.

(0023929)
epeli (reporter)
2013-04-10 11:16

Still happens in 0.34.11.

I have a fort with various bugged invisible items created by magma/lava and a flash-freezing river.

Bug 0006305 (door permanently stuck open with no visible reason) might also be related, I couldn't find any other possibly related bugs/causes for it.

(0024491)
aztectornado (reporter)
2014-02-03 06:56

One of my forts had a human caravan take a detour into my moat as it was filling, causing the wagon to "die" and drop everything everywhere, 98% of which was invisible once I found out about the incident. It also caused a large drop in FPS due to job cancellation spam from what I can only assume was something that somehow got left on the upward ramp at the edge of the moat, and was thereby accessible, yet inaccessible due to invisibility.

I had to abandon the fort and reclaim it because of this... Apparently it was a pretty big deal though since my engraver made no less than 5 images of the wagon being destroyed.

(0024518)
Vattic (reporter)
2014-02-15 20:47

When items get frozen in ice you can dig them back out, but not melt them back out. At least that's how it worked with a freeze trap I made.

(0026564)
Talvieno (reporter)
2014-07-15 18:12

Can confirm that this still exists in 40.03.

(0026730)
Liens (reporter)
2014-07-17 04:00

@Mezmeer What is the workaround?

(0026735)
Multipartite (reporter)
2014-07-17 05:24

@Liens The workaround mentioned is probably the 'can be tracked via stocks menu, dumping them from there works too, makes them reappear' mentioned in the issue description.

Issue History
Date Modified	Username	Field	Change
2010-04-09 14:53	kaefermelder	New Issue
2010-04-09 15:01	Footkerchief	Note Added: 0002433
2010-04-09 15:02	Footkerchief	Summary	hunter dodged into murky pool, drowned, corpse and some equipment invisible, but not all. Possibly after "water movement" => Hunter's corpse/equipment invisible after drowning in pool, probably after getting pushed by flowing water
2010-04-09 15:04	kaefermelder	Tag Attached: old bug?
2010-04-09 15:05	kaefermelder	Note Added: 0002435
2010-04-09 15:17	kaefermelder	Tag Attached: hunting
2010-04-27 22:03	Vastin	Note Added: 0005471
2010-05-06 18:40	Footkerchief	Note Added: 0006328
2010-05-06 18:40	Footkerchief	Tag Detached: old bug?
2010-06-04 18:39	Footkerchief	Summary	Hunter's corpse/equipment invisible after drowning in pool, probably after getting pushed by flowing water => Items disappear (become invisible) after getting pushed by flowing water
2010-06-04 18:41	Footkerchief	Relationship added	related to 0002160
2010-06-04 21:39	Footkerchief	Relationship deleted	related to 0002160
2010-10-21 06:27	Quietust	Note Added: 0013442
2010-10-21 06:29	Quietust	Note Edited: 0013442	View Revisions
2010-12-02 07:57	Footkerchief	Relationship added	has duplicate 0003765
2010-12-28 09:34	Footkerchief	Relationship added	related to 0002210
2011-03-27 15:49	Dwarfu	Note Added: 0016688
2011-03-27 15:50	Dwarfu	Summary	Items disappear (become invisible) after getting pushed by flowing water => Items disappear (become invisible) after getting pushed by flowing water, burning in magma, or encased in ice
2011-03-27 17:38	Dwarfu	Relationship added	related to 0002884
2011-03-27 17:39	Dwarfu	Note Added: 0016691
2011-03-29 10:51	SocietalEclipse	Note Added: 0016766
2011-04-17 20:20	InsanityPrelude	Note Added: 0017420
2011-05-23 13:53	foop	Note Added: 0017833
2011-06-12 23:39	Dwarfu	Relationship added	related to 0004697
2011-06-28 14:10	Dwarfu	Relationship added	parent of 0004600
2011-06-28 14:45	Dwarfu	Relationship added	has duplicate 0004551
2011-07-13 10:26	Dwarfu	Relationship added	parent of 0004751
2011-07-13 10:33	Dwarfu	Sticky Issue	No => Yes
2011-07-22 14:16	Naros	Tag Attached: water
2011-07-22 14:16	Naros	Tag Attached: flow
2011-07-22 15:34	Logical2u	Relationship added	has duplicate 0004774
2011-07-24 06:10	ImBocaire	Note Added: 0018303
2011-07-27 07:13	Dwarfu	Relationship added	has duplicate 0002132
2011-07-27 07:13	Dwarfu	Issue Monitored: malroth
2011-07-31 05:19	Dwarfu	Relationship added	has duplicate 0001487
2011-12-20 11:58	flamoot	Note Added: 0019211
2012-02-10 07:33	Dwarfu	Note Added: 0019474
2012-02-10 10:44	JasonMel	Issue Monitored: JasonMel
2012-02-10 10:49	JasonMel	Note Added: 0019476
2012-02-12 22:22	Mezmeer	Note Added: 0019487
2012-02-12 22:23	Mezmeer	Tag Attached: owned item
2012-02-19 15:23	Footkerchief	Note Added: 0020174
2012-02-19 15:24	Footkerchief	Relationship replaced	has duplicate 0004697
2012-03-11 07:13	Logical2u	Relationship added	has duplicate 0005614
2012-05-16 07:23	Footkerchief	Relationship added	related to 0005893
2012-07-17 03:08	Leonidas	Note Added: 0023251
2013-04-10 11:16	epeli	Note Added: 0023929
2014-01-26 10:22	Footkerchief	Relationship replaced	has duplicate 0005893
2014-02-03 06:56	aztectornado	Note Added: 0024491
2014-02-15 20:47	Vattic	Note Added: 0024518
2014-02-19 06:53	Footkerchief	Assigned To	=> Footkerchief
2014-02-19 06:53	Footkerchief	Status	new => acknowledged
2014-07-15 18:12	Talvieno	Note Added: 0026564
2014-07-17 04:00	Liens	Note Added: 0026730
2014-07-17 05:24	Multipartite	Note Added: 0026735
2014-07-27 10:36	Kanddak	Issue Monitored: Kanddak
2014-08-13 13:29	Footkerchief	Status	acknowledged => confirmed
2014-08-14 12:27	Toady One	Relationship replaced	related to 0004751
2014-08-14 12:27	Toady One	Relationship replaced	related to 0004600
2014-08-14 12:28	Toady One	Status	confirmed => resolved
2014-08-14 12:28	Toady One	Fixed in Version	=> Next Version
2014-08-14 12:28	Toady One	Resolution	open => fixed
2014-08-14 12:28	Toady One	Assigned To	Footkerchief => Toady One
2014-08-14 12:39	Footkerchief	Sticky Issue	Yes => No
2014-08-14 15:33	Kanddak	Issue End Monitor: Kanddak
2014-12-30 20:32	Footkerchief	Relationship replaced	has duplicate 0004751
2014-12-30 20:32	Footkerchief	Issue Monitored: Farmerbob

Notes
(0002433) Footkerchief (manager) 2010-04-09 15:01	Yeah, there was an old bug where items that got pushed around by flowing water would become invisible. Guess it's still around.

(0002435) kaefermelder (reporter) 2010-04-09 15:05	k - added a tag "old bug?". pretty minor anyway

(0005471) Vastin (reporter) 2010-04-27 22:03	Confirmed. I had a soldier fall into a pool and was trying to make it shallow enough to retrieve his corpse and effects. This activity resulted in some flow and his corpse and several items disappeared. The items still show up in stock, and if I zoom to them it selects an apparently empty square in the pool where they presumably are.

(0006328) Footkerchief (manager) 2010-05-06 18:40	Here's the specific old bug: # 000525 □ [dwarf mode][flows] items that were pushed around by water didn't show up with look command

(0013442) Quietust (reporter) 2010-10-21 06:27 edited on: 2010-10-21 06:29	I just had this happen with magma - a Goblin siege managed to slaughter a Human caravan while standing inside my magma trap so I turned it on and let them have it; as a result, I now have an invisible glob of melted burning donkey cheese that won't disappear from my stocks screen.

(0016688) Dwarfu (manager) 2011-03-27 15:49	This also happens to anything that gets encased in ice - you can't 'k' over the items, though the stocks screen still lists them and you can zoom to them.

(0016691) Dwarfu (manager) 2011-03-27 17:39	See note at 0002884:0011249 for a sock that was lost in magma and is generating spam messages for claiming attempts.

(0016766) SocietalEclipse (reporter) 2011-03-29 10:51	This happens constantly for me with my magma goblin dumping chamber. 1. Fill chamber with magma 2. Drop in 20+ armed/armored goblins to ensure enough iron items left over. Testing with just a few goblins may or may not reproduce bug. 3. Empty chamber into larger cooling chamber via a door switch. The stack of iron helms and such will scatter into the second chamber with the magma flow. 4. Wait for 1/7 magma to cool & disappear. 5/Result. Seemingly random selection of iron items that are invisible (graphically) but if you unForbid them via stocks screen dwarves will come to drag them away. 'K' over invisible objects before dwarf arrives will only show visible items if both visible/invisible occupy the same spot. They reappear (graphically) the moment a dwarf picks them up.

(0017420) InsanityPrelude (reporter) 2011-04-17 20:20	Still occurs as of 31.25.

(0017833) foop (reporter) 2011-05-23 13:53	This is happening in my goblinite collection chamber where items are washed off the narrow path of doom by water from a large cistern above. I've put a save on DFFD (bit big, I'm afraid, it's a mature fort): http://dffd.wimbli.com/file.php?id=4427 [^]

(0018303) ImBocaire (reporter) 2011-07-24 06:10	I posted a bug marked as a duplicate. I'm sure it's the same issue, but I'd like to note that in my particular case, the items disappeared from the stocks menu as well.

(0019211) flamoot (reporter) 2011-12-20 11:58	Yeah I was trying to pump water away from drowning victims so their corpses could be retrieved, and they disappeared!!

(0019474) Dwarfu (manager) 2012-02-10 07:33	JasonMel's save from 0001581: http://dffd.wimbli.com/file.php?id=5459 [^] It appears the body and stones, though not hidden have been displaced because of a cave-in and being in water. See his notes at 0001581:0019462 and 0001581:0019466 and mine at 0001581:0019468.

(0019476) JasonMel (reporter) 2012-02-10 10:49	Since it turns out that the stones may be relevant too, I should mention that the 1x2 channel the corpse is in didn't have any stones in it at all before the cave-in. They were very probably from the stone stockpile to the west that was "destroyed" by the cave-in.

(0019487) Mezmeer (reporter) 2012-02-12 22:22	Happened to me, thankfully this has a workaround. I had about 13 dwarves claiming items from my "migrant corpse maker" which was just a walled in area which I flooded when I had the new migrants in there. When it drained, it must have activated this bug. >__>

(0020174) Footkerchief (manager) 2012-02-19 15:23	hyp3r4ctive posted this save at 0004697: http://dffd.wimbli.com/file.php?id=4509 [^]

(0023251) Leonidas (reporter) 2012-07-17 03:08	This bug is easy to duplicate in the object testing arena. Just have some creatures fight to generate objects, then create some cubes of water nearby. The bug appears consistently in width-one corridors, less consistently in open areas.

(0023929) epeli (reporter) 2013-04-10 11:16	Still happens in 0.34.11. I have a fort with various bugged invisible items created by magma/lava and a flash-freezing river. Bug 0006305 (door permanently stuck open with no visible reason) might also be related, I couldn't find any other possibly related bugs/causes for it.

(0024491) aztectornado (reporter) 2014-02-03 06:56	One of my forts had a human caravan take a detour into my moat as it was filling, causing the wagon to "die" and drop everything everywhere, 98% of which was invisible once I found out about the incident. It also caused a large drop in FPS due to job cancellation spam from what I can only assume was something that somehow got left on the upward ramp at the edge of the moat, and was thereby accessible, yet inaccessible due to invisibility. I had to abandon the fort and reclaim it because of this... Apparently it was a pretty big deal though since my engraver made no less than 5 images of the wagon being destroyed.

(0024518) Vattic (reporter) 2014-02-15 20:47	When items get frozen in ice you can dig them back out, but not melt them back out. At least that's how it worked with a freeze trap I made.

(0026564) Talvieno (reporter) 2014-07-15 18:12	Can confirm that this still exists in 40.03.

(0026730) Liens (reporter) 2014-07-17 04:00	@Mezmeer What is the workaround?

(0026735) Multipartite (reporter) 2014-07-17 05:24	@Liens The workaround mentioned is probably the 'can be tracked via stocks menu, dumping them from there works too, makes them reappear' mentioned in the issue description.