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[Flaede]

I've been noticing a need for MythBusting threads to make a reappearance. I may not be the best one to restart this, because I don't usually get forts to the point where I can easily test myths, but I am hoping this might inspire me.

I know that the very nature of DF can create odd myths about what will work/fail. Let's test them FOR SCIENCE!
At any rate, two myths to debunk:

1. Building Destroyers can't destroy "Up" (meaning: they can't destroy floor grates/magma buildings above them)
- should be easy to test with some FBs.

2. Magma at The Top Of The Sky, meeting Water at The Top Of The Sky will form natural rock that is "attached" to the heavens. (constructions attached to this need not be connected to the ground?)
 -a 2-part myth, I am having a little difficulty getting magma up to the top z level, let alone getting it to meet up with water, this is a mini-megaproject for me currently.

Anyone have any other myths that need testing?

[Emily]

A possible corollary of 2, which is probably easier to test, would be that constructions attached to the sky also anchor to it.  Unless the game doesn't let you put walls on the highest z-level; I've never actually tried to do this.

Also, you could possibly use DFHack to make it a bit easier to get magma up high.  Though it seems to not be letting me spawn the magma all the way up at the top z-level.  Or actually anywhere above one z-level off the ground.  Huh.

[Flaede]

Unless the game doesn't let you put walls on the highest z-level

the game doesn't let you put walls on the highest z-level - my conjecture is that this is because they would "stick to the sky".

I have a fort that has a magma pipe, this should be relatively easy to get a few units of magma up high enough.

EDIT: and no sooner do I type this, then I get a season-change crash. *sigh*

[ungulateman]

Try making flying walls in the arena. You can mix lava and water there, after all.

[rmunn]

I just tested mixing water & magma at the top Z-level of the arena, and the resulting rough-hewn rock walls stay in place. I'll leave testing this in Fortress mode to DF players more experienced than me, but this is tentative support for myth #2 being real.

Edit: There was nothing under the walls to support them, and nothing around them. The only place they could have been getting support from was the Top Of The Sky.

[Gearheart]

That's actually pretty cool. Make an unseigable fortress which hangs from the sky, then place fortifications near the bottom and watch as your sky castle annihilates goblins and orcs.

[Halykan]

I just tested mixing water & magma at the top Z-level of the arena, and the resulting rough-hewn rock walls stay in place. I'll leave testing this in Fortress mode to DF players more experienced than me, but this is tentative support for myth #2 being real.

Edit: There was nothing under the walls to support them, and nothing around them. The only place they could have been getting support from was the Top Of The Sky.

I think the only thing to do now is find some intrepid Proficient Architect/Mechanics and make a cast-obsidian Dwarven Space Elevator.

I wonder if there's any Hidden Fun Stuff on the Moon.

[Akura]

1. Building Destroyers can't destroy "Up" (meaning: they can't destroy floor grates/magma buildings above them)
- should be easy to test with some FBs.

Flying destroyers, I think, can. Although, I don't know if a hatch can be destroyed if there's an up stair below it regardless.

[Dariush]

I just tested mixing water & magma at the top Z-level of the arena, and the resulting rough-hewn rock walls stay in place. I'll leave testing this in Fortress mode to DF players more experienced than me, but this is tentative support for myth #2 being real.

Edit: There was nothing under the walls to support them, and nothing around them. The only place they could have been getting support from was the Top Of The Sky.

I tested in arena as well. Walls safely hang at the highest z-level and can support walls UNDER them, but if I try to attach a wall adjacent to a wall that is not hanging on sky, but on wall that is hanging on sky, it will cave-in. Goodbye, flying forts  (Yes, I know this result can be achieved by turning cave-ins off)

[Reese]

I just tested mixing water & magma at the top Z-level of the arena, and the resulting rough-hewn rock walls stay in place. I'll leave testing this in Fortress mode to DF players more experienced than me, but this is tentative support for myth #2 being real.

Edit: There was nothing under the walls to support them, and nothing around them. The only place they could have been getting support from was the Top Of The Sky.

I tested in arena as well. Walls safely hang at the highest z-level and can support walls UNDER them, but if I try to attach a wall adjacent to a wall that is not hanging on sky, but on wall that is hanging on sky, it will cave-in. Goodbye, flying forts  (Yes, I know this result can be achieved by turning cave-ins off)

I'm curious if any combination of construction can be made to be supported- say, if you build a support below the flying obsidian and built a floor under that, or if you cast the entire fort out of obsidian.

[Dariush]

Anyway, how are you going to get magma and water on top level? You'll have to place floors on top level, which can't be placed... (or can they?...) And even if you succeed, you'll already have a pumpstack in the heavens which can be used for basing fort off!

[Sphalerite]

You can build walls on the level one level below the top level, then build pumps on top of those walls.

[forsaken1111]

Hm, this should be quick and easy to test using dfhack.

-runs off to gen a world-

[forsaken1111]

Yep this works. I spawned magma and water on top of walls constructed just below the upper level and they created an obsidian wall. When I deconstructed the walls below it, it stayed up.

[Spaghetti]

screen shot plz