Bay 12 Games Forum

Sure, want one?

Water, the blue, drowny, non burny stuff. Drinking this is inadvisable, may contain carp.
-Created.
-Looks around and scratches its head a bit.
-Tries to flow in any orthogonal directions: ><^v, or down a z-level.
-If it can't, it randomly decides to go diagonally or teleport.
-If diagonal, it will essentially delete itself and create a tile of water in the diagonal area at its z-level: This is why water flowing diagonally will lose its pressure.
-If teleport, it will teleport through 7/7 water to the nearest empty spot, or partially filled spot. This is the brook u-bend effect.

Magma. The red, glowy, burny stuff. Drinking this is inadvisable.
-Created.
-Looks around and scratches its head a bit.
-Tries to flow in any orthogonal directions: ><^v, or down a z-level.
-If it can't, it will go diagonally.
-If diagonal, it will essentially delete itself and create a tile of magma in the diagonal area at its z-level: This is why magma flowing diagonally will lose its pressure.
-It doesn't do teleportation, hence, the lack of 'pressure' which occurs when water teleports through other 7/7 water.

These rules are applied for each tile of water or magma. When pumped, the tiles coming out of the pump will behave like that of water, teleport and all. So contary to popular citation, magma doesn't strictly become pressurized when pumped, it's the tiles pumped by the pump alone which are pressurized.

I think that covers everything.

Something just went click in my brain: I fully understand the pressure system in DF now.

You know how if you have a U-bend from a brook, it'd fill up to one level less than the brook? That's why. Water will teleport through 7/7 water to the lowest possible and nearest empty slot- If a brook isn't drained, that's the edge of the map. Only if you dam the brook, it'll go up that last z-level.

It appears to me, though that magma will only move from one map to another in adventure mode, yes? If you're playing fortress in one map, the other maps magically disappear off the face of the planet.

I wonder how long it would take to cave in that 200+ z-level map knocking around here and fill it with magma.

Hey! Is that the one at the Singapore Science Centre?

Moving on, I wonder if I can make my kingy happy in a 2x1 bedroom. (1 tile: bed, 1 tile: singularity lever)

You can in fact remove the floor from under constructions: (b-C-w) build a wall under the open space, put your vertical bars down, remove the wall. No idea whether the bars will deconstruct, though.

The water acts like it's chasmed. You can't drown HFS, by the way.

EDIT:

The next logical question is: What if there's no viable land whatsoever?

... Actually, you can cast the border of the map, since magma doesn't flow off the edge of the map.