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IDProjectCategoryView StatusLast Update
0008023Dwarf FortressDwarf Mode -- Flowspublic2014-08-16 06:30
ReporterAiwok Assigned Touser6 
PrioritynormalSeverityminorReproducibilitysometimes
Status assignedResolutionopen 
PlatformPCOSWinOS Version7 and 8
Summary0008023: Water pressure seems to be calculated somewhat tightfisted
DescriptionWater level in mines does not rise to the level of its source (brook).

If you channel out your cistern the water will just spread and new water won't come in. (water level falls)

If you dig in a new way for the water on another level (tried just below surface) the cistern "wakes up" immediatly and the water level rises even before the water from the river can pass through its new channel.
Steps To ReproduceDig a cistern then channel some levels down and ramp up again to pierce the brook bed from below.
w:wall
r:ramp (these would have water level 7)
number:water level
wwwwwww
      w
 ww wwwww777ww surface
 w334w wrw
 w777w wrw
 wffrwwrw
   wrrw
Additional InformationDon't know if Reproducibility would be always - saw it twice.
TagsNo tags attached.

Activities

Quietust

2014-08-15 05:46

reporter   ~0029085

Does the behavior described in the "Pressure" article on the DF Wiki ( http://dwarffortresswiki.org/index.php/DF2014:Pressure ) explain what you are observing?

Aiwok

2014-08-15 08:00

reporter   ~0029094

Maybe partial. *testing* Yes the initial level looks like in the desciption in the Wiki (still a lttle bit strange though). But then if you dig out the cistern bigger the water level will just fall. For example you can have a 3x3 cistern and then dig it out to 5x5 the water spreads and its level drops:

topview:
_____
_777_
_777_
_777_
_____

33233
23333
33332
32333
33333

There just no more water coming in to fill the new space.

Aiwok

2014-08-15 08:03

reporter   ~0029095

*More testing*...
If you later dig in any other place into the river the pressure gets recalculated somehow and the water level rises immediatly in the cistern.

Daonitre

2014-08-16 06:30

reporter   ~0029135

Last edited: 2014-08-16 06:30

I've verified this as well. I was building my cistern to give a quick tutorial for some of my stream viewers and ran into the same thing. it appears that river/brook/ocean water is working correctly - but any water outside of that is treated with the same physics as magma (does not climb z-levels).
Pictures in the tut thread:
http://www.bay12forums.com/smf/index.php?topic=142389.0

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Issue History

Date Modified Username Field Change
2014-08-15 01:35 Aiwok New Issue
2014-08-15 05:46 Quietust Note Added: 0029085
2014-08-15 07:03 user6 Assigned To => user6
2014-08-15 07:03 user6 Status new => confirmed
2014-08-15 07:03 user6 Status confirmed => feedback
2014-08-15 08:00 Aiwok Note Added: 0029094
2014-08-15 08:00 Aiwok Status feedback => assigned
2014-08-15 08:03 Aiwok Note Added: 0029095
2014-08-16 06:30 Daonitre Note Added: 0029135
2014-08-16 06:30 Daonitre Note Edited: 0029135