Dwarf Fortress Bug Tracker - Dwarf Fortress
|View Issue Details|
|ID||Project||Category||View Status||Date Submitted||Last Update|
|0011127||Dwarf Fortress||Dwarf Mode -- Environment||public||2019-07-23 12:11||2019-07-24 08:36|
|Platform||OS||Windows||OS Version||10 Pro|
|Target Version||Fixed in Version|
|Summary||0011127: Shallow (1/7 and 2/7) water on vegetation tiles turns into ice walls during winter|
|Description||According to the wiki, 4/7 water is the "Minimum height to make an ice wall when frozen": http://dwarffortresswiki.org/index.php/DF2014:Water [^]|
I have a drowning hallway on my map which is in the process of being drained during the winter. The water drains onto my aboveground farm where the tile depths are mostly 1/7 and occasionally 2/7. When frost sets in, many of these tiles turn into Ice walls.
Uploaded save here: http://dffd.bay12games.com/file.php?id=14472 [^]
Current date in the save file is moonstone 26th. The frost sets in on moonstone 27th.
- open the save, it should already be on the farm level. Otherwise shortcut F2 will go there.
- leftmost room is where the water is draining
- let the game run for a short while and notice how the shallow water tiles turn into ice walls
This makes me think that either the wiki is wrong or that this is a bug. Considering that 1/7 water is less than knee-deep, seeing 1/7 water turn to a tile-high ice wall makes me lean towards it being a bug. Note: not all water tiles turn into an ice wall. Many of them turn into Muddy ice.
The only mention of this phenomenon I found on the bugtracker was in the comments of this bug http://www.bay12games.com/dwarves/mantisbt/view.php?id=1562#c6392 [^]
It was posted back in 2010. Maybe nobody ever bothered reporting this bug?
My other searches on the bugtracker did not yield anyone else reporting this.
Another somewhat related odd behaviour which might be a bug is that when the thaw sets in it turns all the "Muddy Ice" tiles into 1/7, 2/7 and 3/7 water.
I took the time to pause the game and step through until the first tick when the thaw sets in. It occurs around roughly 3/4th of the 2nd Obsidian (so about a month after the frost sets in). I don't know if this is intended behaviour or a bug. If it's the latter then it may deserve its own report.
Screenshots are included with the save.
|Steps To Reproduce||- have an aboveground basin that contains water levels of 1/7, 2/7 and 3/7 but not higher|
- wait for the temperature to drop so that water freezes
- you should see many of these water tiles turning into Ice walls
|Tags||No tags attached.|
|2019-07-23 12:11||kermat||New Issue|
|2019-07-23 13:51||Loci||Note Added: 0039447|
|2019-07-23 13:51||Loci||Assigned To||=> Loci|
|2019-07-23 13:51||Loci||Status||new => acknowledged|
|2019-07-23 13:53||Loci||Summary||Shallow (1/7 and 2/7) water turns into ice walls during winter => Shallow (1/7 and 2/7) water on vegetation tiles turns into ice walls during winter|
|2019-07-23 13:54||Loci||Relationship added||related to 0001562|
|2019-07-24 08:36||kermat||Note Added: 0039450|