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[gtmattz]

This fort was screwed originally because "Reclaim" *cleans* up everything, originally "cleaning" up all the mud... I wonder if it "Cleaned" something that ended up creating a void between the magma sea and hell? Oy Iive got to channel a pit and save some magma before its all gone!!

I don't think its anything cleaned up, it looks more like the underground layers got scrambled somehow, as there are areas that look like seams where stuff doesn't match.


By the way, there are 40 z levels of semi molten rock under the majority of the rest of the sea, but the area over on the right is 40 z levels of what looks to resemble empty magma sea terrain with a 13 level tall magma fall that would look pretty spectacular on a visualizer in it and a single layer of SMR between the floor of that cavern and hell.

[smjjames]

Actually looking at this map its all messed up, I am willing to bet it is something related to the reclaim on the fort.   I think toady may actually want to have a look at this?

Under the magma sea is a layer of SMR covering the whole map save for a 1x3 embark tile area in the south east, which is where the leak is.

Heh, reclaim is known to create a crapload of problems. So.... yea, I guess it would be useful as its one of the more gamebreaking reclaim bugs, depending on your situation.

[Crossroads Inc.]

Well you guys have the file... Be sure to send it to Toady, It seems in time.. my Ice fortress will be doomed without magma to keep it warm.. till that day comes, we Shall soldier one!  A bloody shame to, the amount of Adamite I can mine is ridiculous, and the size of the caverns incredible.

Can you show me some reveals of the area? I'd love ot see it all.

[Crossroads Inc.]

Quick update, The magma is sinking faster now it seems, For those that downloaded it, Can you post screenshots of the bottom layers, I am curious just what happend.

[gtmattz]

Quick update, The magma is sinking faster now it seems, For those that downloaded it, Can you post screenshots of the bottom layers, I am curious just what happend.

Just get DFHack(make sure to get the 2010 version) and run the reveal tool yourself, it will be much better than any screenshots...  I suggest doing it on a copy of the region to alleviate any danger of corrupting your save unintentionally.

[Arkenstone]

Wow...  This is...  The best thing to come out of the Elven world since Cacame himself!

[Corona688]

These are the kinds of bugs that make DF the game it is.  Magma vanishing?  Oops, it's all being sucked down by hell.

[PhoenicIan]

These are the kinds of bugs that make DF the game it is.  Magma vanishing?  Oops, it's all being sucked down by hell.

This is how everything works. This, right here, is DF.

[AzureShadow]

These are the kinds of bugs that make DF the game it is.  Magma vanishing?  Oops, it's all being sucked down by hell.

This is how everything works. This, right here, is DF.

This, my good friend, is replacing my sig. Perfect description of how this game works. xD

[Djohaal]

Actually, this magma leakage is due to a bug I observed since the first time I played DF2010. I never expected it to be so catastrophic to the point of breaching hell itself though.
Some stonesense bliss:

Spoiler (click to show/hide)

The magma sea emptying...



The magmafall. That rectangular pillar of magma on the east sits on the exact corner of the map. It seems to be static and its cause is unkonwon for me, toady might like to check on tihs.



And the culprit, if you guess what is going on you win some awesome points

This happened because DF generetes the terrain on each one of its 48x48 quads more or less independently, and each of the 48x48 quads seems to have some "height" measure of its own.
Whenever you are in a map with global worldgen terrain "steps" like this one, the quad's internal height values don't match properly, and you have those maps where there are one or two Z-levels of discrepancy between the magma sea on the "high" and "low" tiles (specially common on mountainsides). However since the magma sea is thick, and so is the SMR layer below it, we don't have many issues (other than the odd dwarf digging into the magma sea from the SIDE, yes it can happen).
In this case because the fort sits on an obscene cliff, the "fault" between the quads is so great that the magma sea's side breached into hell, and voila, you have this.. There's a perfect match between where the giant cliff starts and where the magma sea breaches into hell.

[PhoenicIan]

This, my good friend, is replacing my sig. Perfect description of how this game works. xD

Yay, I got sigged! A legendary day for me.

[Crossroads Inc.]

Holy %##@ Djohaal!!!

That pic of the magma flow is almost terrifying.. All that Magma just emptying out into hell.. And its just going away isn't it? Hells bottom layer is like a chasm, no amount of magma would fill it? So the magma cliff my fort embarked caused a tectonic split of such epicness it split the magma sea into hell?

Good lord where is toady?

[Altaree]

so which is faster?  The magma regen process or the magma eating process?

[gtmattz]

so which is faster?  The magma regen process or the magma eating process?

Well the pipe is continually dropping, so it exceeds the pipe refill, we will see what happens when it gets down to the sea I guess.

[Arkenstone]

I think that it'll eventually ebb to a slow ~1-3 flow but will be a constant drain on your FPS: eventually the amount pouring in will equal the amount of refill, and so while it'll still drain down it will never be gone completely.  The real question is will it expose hell, thus ending the fort?

I for one would interpret this as an omen from Armok, telling you to see this wonder and honor it, creating its likeness elsewhere, and building a huge underground temple to the magma.  You should seal yourself underground, away from the sun, which is jealous of the magma's fiery glory.  Any who come seeking you should be judged and, if found wanting, become a sacrifice unto your molten king.

This is the herald of Ragna-Rock: you have now but precious little time left to ensure that your entire fortress (including caverns) is sealed off before the demons are unleashed.  Any more immigrants you receive will have to dismantle/rebuild a pair of constructed walls that act as an airlock if they want to enter your fort.