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Author Topic: Sealing off the floor below an Up/Down stair and converting to just an up stair  (Read 909 times)

Kaiser Reinhard

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Sealing off the floor below an Up/Down stair and converting to just an up stair
« on: July 19, 2015, 11:23:29 am »
How do you seal off the floor below and Up/Down stair you want to dismantle? Does channeling out the UD stair and building a up stair on it also function as a floor that blocks nasty things from getting up below?
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Authority2

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Re: Sealing off the floor below an Up/Down stair and converting to just an up stair
« Reply #1 on: July 19, 2015, 12:40:18 pm »
You can directly construct an up stair on the tile if the u/d stair was a dug one rather than a constructed one. Yes, that will prevent things from getting in from below. If the u/d stair is constructed, you'll need to deconstruct it before replacing it with an up stair.
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Loci

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Re: Sealing off the floor below an Up/Down stair and converting to just an up stair
« Reply #2 on: July 19, 2015, 05:45:23 pm »
Also, watch out for a bug that lets creatures move vertically-diagonal through solid walls. If you sink a central stairway like:

XXX
XXX
XXX

And only one of the stairs hits a cavern, you might just be tempted to replace that up/down stair with an up stair and call it good. If, however, any of those other up/down stairs are vertically-diagonal to the cavern, flying, swimming, and possibly climbing creatures can move directly into your stairwell.

sideview:

#X
_#

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