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Dwarf Fortress => DF Gameplay Questions => Topic started by: nickbii on May 27, 2018, 02:32:12 am

Title: Lever/Door system that oes not seem to work
Post by: nickbii on May 27, 2018, 02:32:12 am
I was recently punching through an aquifer, and I decided to kill it with magma. This worked quite well, except the floodgates used were too slow closing and now I have magma in my stairwell. To kill that I thought I'd pour a couple tiles of the aquifer into the stairwell.

And I used doors, with precisely two squares between them. It looks like this:
DEEDEEEEEEEEE

D for Door, E for empty space. The plan was to set both doors to the same lever, with the first door open. That way when I fill the passage with water from the aquifer, I can just pull the lever and my doors will switch states, which will mean the water from the passage will fill the two squares with 12-14 units of water, then I pull the lever again so the first door can open (and dump 12-14 urists of water on the magma) and the second will close (preventing the passage full of water from filling the mine shaft.

So I hooked up one door, pulled the lever, then hooked up the other door, and tried a test pull or three. In theory the doors should be in different states (ie: one should always be opened and the other closed) but they are now the same state.

So I clearly fucked something up. Which leads me to my questions:

1) What did I fuck up?

2) How can I fix it?
Title: Re: Lever/Door system that oes not seem to work
Post by: Chaia on May 27, 2018, 04:00:28 am
1) Nothing, the mechanics work like this. The lever also has an "open" and a "closed" state, which is synchronized with doors, etc. A door, which is in the "open" state will simply do nothing if the connected lever is switched to "open".

2) Use two levers
Title: Re: Lever/Door system that oes not seem to work
Post by: PatrikLundell on May 27, 2018, 04:20:28 am
1. Your mistake was that you assumed levers toggle what's hooked up to them, rather than send "open" and "close" signals, as Chaia explained. Thus, the error was on the design level, not the implementation level.
Title: Re: Lever/Door system that oes not seem to work
Post by: Bumber on May 28, 2018, 08:58:32 am
The only way you can have opposite states on the same lever is either by replacing one of the doors with a floor hatch (requires 2 z-levels,) or by setting up some kind of inverter (http://dwarffortresswiki.org/index.php/DF2014:Computing#Disciplines).

Quote from: nickbii on May 27, 2018, 02:32:12 am
And I used doors, with precisely two squares between them. It looks like this:
DEEDEEEEEEEEE
Spoiler (click to show/hide)
Title: Re: Lever/Door system that oes not seem to work
Post by: Miles_Umbrae on May 28, 2018, 12:30:49 pm
Quote from: Bumber on May 28, 2018, 08:58:32 am
setting up some kind of inverter (http://dwarffortresswiki.org/index.php/DF2014:Computing#Disciplines).

Quote from: nickbii on May 27, 2018, 02:32:12 am
And I used doors, with precisely two squares between them. It looks like this:
DEEDEEEEEEEEE
Spoiler (click to show/hide)

LOL!