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=="Magma Piping?==
 
does magma melt non-magma save walls? can it do it vertically, assuming i channeled out the floor? up and down? it would be interesting to just melt a bunch of stone in a big line straight up instead of build a huge pump system.
 
:I'm not sure about 40d, but I know magma doesn't melt walls in v0.34 (not even constructed walls, which includes wood). Also, I don't think it travels vertically under pressure (although volcanoes are an exception). --[[User:Lethosor|<span style="color:#074">Lethosor</span>]] ([[User talk:Lethosor|<span style="color:#092">talk</span>]]) 23:35, 30 June 2013 (UTC)
 
 
==LIES!==
 
'Like walls, doors can also be built out of any material and still hold back lava as long as it's in the "closed" position.'
 
I did this and my andesite doors turned into puddles of goo, as did my hatches. Much Fun is currently happening...
 
* Perhaps you forgot to "lock" the door? The door should be fine so long as the magma is not actually on the door's tile, which should not happen unless one of your <s>idiots</s>dorfs opens it (I think this is due to quirks with the temperature system; magma's temperature is fixed at 12000 degrees Urist and does not heat up adjacent tiles). In fact, just the other day I rerouted magma through my barracks to clean up the assorted crap that had accumulated on the floor. The doors held firm (though I did construct a wall in front of the doors, just in case), although a dwarf in a completely different part of the fortress (and the schmoe in the barracks with two missing limbs and a broken spine, though that was considerably less surprising) inexplicably burst into flames, which baffles me to this day. Perhaps it was fire snakes. Or Spontaneous Dwarven Combustion (SDC). --[[User:Mr Frog|Mr Frog]] 01:28, 21 March 2010 (UTC)
 
 
 
==Steel?==
 
==Steel?==
 
Are you certain that steel is a requirement for metals in contact with magma? This info conflicts with the [[Magma smelter]] article, which state that using [[Fire-safe materials]] is enough. Don't have a fort with magma yet, but could someone check which one is correct?[[User:Thexor|Thexor]] 19:23, 31 October 2007 (EDT)
 
Are you certain that steel is a requirement for metals in contact with magma? This info conflicts with the [[Magma smelter]] article, which state that using [[Fire-safe materials]] is enough. Don't have a fort with magma yet, but could someone check which one is correct?[[User:Thexor|Thexor]] 19:23, 31 October 2007 (EDT)
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I don't know why, but I've observed flies (normal and acorn flies, mostly normal flies) spawning at the edge of magma where its melting rock. It's particularily noticeable when you have magma channels under your forging area since the confined space tends to concentrate them. Also, they will come out of any magma access holes you have dug. I'm using the Mayday graphics mod, so no idea if it's an artifact. My theory is that they represent vapors coming out of the magma as it melts the rock it encounters. I also added this fact to the flies page as well. --[[User:Smjjames|Smjjames]] 14:14, 13 May 2009 (UTC)
 
I don't know why, but I've observed flies (normal and acorn flies, mostly normal flies) spawning at the edge of magma where its melting rock. It's particularily noticeable when you have magma channels under your forging area since the confined space tends to concentrate them. Also, they will come out of any magma access holes you have dug. I'm using the Mayday graphics mod, so no idea if it's an artifact. My theory is that they represent vapors coming out of the magma as it melts the rock it encounters. I also added this fact to the flies page as well. --[[User:Smjjames|Smjjames]] 14:14, 13 May 2009 (UTC)
  
:This has happened to me as well, it dosn't have anything to do with the graphics mod because I don't use it, I thought it was part of the civi forge mod I have been using, my personal theory it that flies spawn from refuse and molten rocks are refuse, it might also be from the dirt that magma makes because once I found a dwarf going down to my obsidian farm to clean something, the magma had cleared because my watergate broke(I suspect that an elven plot or carp are the cause).The ground had marks on it and I saw my cleaner cleaning it up.The flies may be attracted to "dirty" tiles but i'm not sure.--[[User:Supercharazard|Supercharazard]] 17:30, 12 October 2009 (UTC)
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This has happened to me as well, it dosn't have anything to do with the graphics mod because I don't use it, I thought it was part of the civi forge mod I have been using, my personal theory it that flies spawn from refuse and molten rocks are refuse, it might also be from the dirt that magma makes because once I found a dwarf going down to my obsidian farm to clean something, the magma had cleared because my watergate broke(I suspect that an elven plot or carp are the cause).The ground had marks on it and I saw my cleaner cleaning it up.The flies may be attracted to "dirty" tiles but i'm not sure.--[[User:Supercharazard|Supercharazard]] 17:30, 12 October 2009 (UTC)
::I have noticed this same behavior in vanilla DF--[[User:Zchris13|Zchris13]] 15:20, 15 October 2009 (UTC)
 
  
 
== Digging into volcano wall ==
 
== Digging into volcano wall ==
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The example directly on the page is difficult to understand--some diagrams would be helpful. Really, detailed designs like that should be on user pages anyway. It would be swell if the person who added this design put it on their own user page and linked to that from here. --[[User:King of the Internet|King of the Internet]] 01:29, 9 August 2009 (UTC)
 
The example directly on the page is difficult to understand--some diagrams would be helpful. Really, detailed designs like that should be on user pages anyway. It would be swell if the person who added this design put it on their own user page and linked to that from here. --[[User:King of the Internet|King of the Internet]] 01:29, 9 August 2009 (UTC)
:Agreed, needs some simple diagram(s) (not over-specific, easily understood/modified to suit individual needs), but also needs to be 1) [[Main:Character_table|standard notation]], and 2) on this page.  If it's on a user page, other users really can't edit it if needed (for instance, to standardize the map symbols - the wall, specifically). --[[User:Albedo|Albedo]] 18:07, 9 August 2009 (UTC)
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:Agreed, needs some simple diagram(s) (not over-specific, easily understood/modified to suit individual needs), but also needs to be 1) [[Character_table|standard notation]], and 2) on this page.  If it's on a user page, other users really can't edit it if needed (for instance, to standardize the map symbols - the wall, specifically). --[[User:Albedo|Albedo]] 18:07, 9 August 2009 (UTC)
 
:Edit - upon reflection, there's every reason to give this topic its own page. [[Obsidian farming]]. --[[User:Albedo|Albedo]] 19:53, 9 August 2009 (UTC)
 
:Edit - upon reflection, there's every reason to give this topic its own page. [[Obsidian farming]]. --[[User:Albedo|Albedo]] 19:53, 9 August 2009 (UTC)
  
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Nope, sorry - I may not have the whole definition, but your limits are just wrong. I noticed "lava" underground while piercing an aquifer. It had been pumped down from the surface, but it was then underground, and had overflow from making obsidian on water onto a floor tile - and none of the other magma doing the work was "lava", it was all "magma".  So was every bit of the magma vent that was exposed. So... I don't know where that leaves us, but for now neither may be (completely) right.--[[User:Albedo|Albedo]] 05:55, 28 September 2009 (UTC)
 
Nope, sorry - I may not have the whole definition, but your limits are just wrong. I noticed "lava" underground while piercing an aquifer. It had been pumped down from the surface, but it was then underground, and had overflow from making obsidian on water onto a floor tile - and none of the other magma doing the work was "lava", it was all "magma".  So was every bit of the magma vent that was exposed. So... I don't know where that leaves us, but for now neither may be (completely) right.--[[User:Albedo|Albedo]] 05:55, 28 September 2009 (UTC)
 
*I've got an above-ground magma pipeline that briefly passes through an underground passage - it becomes Lava once it goes above ground, turns ''back'' into Magma once it enters the subterranean tunnel, then becomes lava again when it emerges. --[[User:Quietust|Quietust]] 23:30, 28 September 2009 (UTC)
 
*I've got an above-ground magma pipeline that briefly passes through an underground passage - it becomes Lava once it goes above ground, turns ''back'' into Magma once it enters the subterranean tunnel, then becomes lava again when it emerges. --[[User:Quietust|Quietust]] 23:30, 28 September 2009 (UTC)
 
== Magma "teleportation" ==
 
 
I've observed this an incredibly annoying number of times; as I'm writing, my current fortress just lost two mason-engravers to magma magically appearing on top of them. In all cases, this has happened when I'm digging near the magma pipe; the first was on a glacier which had a "capped" pipe, so it was covered by obsidian. I became aware of this a little more quickly than I'd like - after a short while I noticed that the small area I'd dug out (just above the magma) for forges had filled up with small amounts of magma, and continued to do so. After that, I noticed that the garbage pit I'd dug out had begun to harbor magma, and so sealed it off. And now, in my current fortress, construction of a (fully iron) screw pump is barely grinding along because the magma respawns and I have to wait for it to "evaporate" before I can continue. Considering how it's about 150 tiles away from my stockpiles, work is moving slowly, and it's requiring an obscene amount of power (and wood) just to build the infrastructure to deliver power to the pump in the first place so that it can start pumping magma through the 5 or so z-levels ahead of it. I can't have somebody power it themselves unless I'm in the mood for barbecue (and don't mind any more casualties on my end). This is kind of getting on my nerves, because I can't expand into using magma-powered workshops until that one pump is actually delivering magma to the reservoir I designed for that purpose, and even after that, there are about 7 more floors to go until it reaches the workshops.<br>
 
TL;DR: Magma is refilling where it shouldn't, and it's getting '''extremely''' [[Fun|annoying]]. Suggestions? I have an [[aquifer]] of unknown depth surrounding the source, so I can't take the direct route. (I found out by trying to, it wasn't pleasant.) ~ [[User:Midna|Midna]] 00:17, 28 January 2010 (UTC)
 
:If the pump's input tile has a "Magma Flow" directly beneath it (i.e. no obsidian walls obstructing the path) and said pump is not at the very top of the magma pipe, then the magma pipe is simply refilling into that tile. --[[User:Quietust|Quietust]] 00:41, 28 January 2010 (UTC)
 
::Seen it mentioned on the forums that the magma pipe refills by spawning magma at the TOP of the pipe, rather than from the bottom or whatever level the magma's at. Probably should be added to the article. --Gelmax
 
:::No, since that's wrong - the magma spawns at the '''surface''' of the magma, not the top of the pipe. --[[User:Quietust|Quietust]] 20:46, 30 January 2010 (UTC)
 
 
== Vs. Windows?? ==
 
 
I know walls are impervious to magma, but I was going to drain down some of my magma pipe, and wanted happiness from the fall, without much danger.  So, I put up a gm window.  Let's see what happens.--Aescula (not logged in ATM)
 
:Magma never forms mist unless it is caught in a cave-in. And, as far as I know, it does not cause the happy thoughts. --[[User:Iban|Iban]] 22:51, 30 January 2010 (UTC)
 
::Your dwarves need to have physical contact with mist to be made happy. And magma mist causes swift, hot death. --[[Special:Contributions/86.6.124.113|86.6.124.113]] 23:47, 2 February 2010 (UTC)
 
::I don't think a gem window would melt anyway; gems are, if I recall correctly, generally impervious to magma. Even if that weren't the case, constructed windows can't really be "submerged" in magma, and so shouldn't melt.... ~ [[User:Midna|Midna]] 02:33, 3 February 2010 (UTC)
 
:::Last I checked, magma was more than capable of melting rough gems (an earlier fort has an invisible glob of molten gray chalcedony in Z-Stocks from bug 000525/000595/000641). --[[User:Quietust|Quietust]] 05:17, 3 February 2010 (UTC)
 
 
==Warm Stone Stuck On ==
 
This is a fiddly bug which came up in a large batch of obsidian farming. What I'm seeing is a weird random looking pattern of warm stone inside my freshly created obsidian. Digging this obsidian back out I get a big clue, there is molten stone in the farm area, which appears again when I dig the obsidian back out. I clear out the entire area, haul off all the stone, and use several fortifications to insure that my magma pipe cant pump any more molten rock into the area. I refill the area, and I still have this random pattern of warm stone. I then clear out a new untouched area and repeat the test. This time I clear all possible stone before filling the area. This time no warm stone appears.
 
 
I'm not completely certain of my results yet, but what I think is happening is when a piece of molten stone gets encased in obsidian it turns on the warm stone flag. However, when this tile is dug back out, the warm stone indicator is NOT removed, only hidden because it's empty space. So when the tile is refilled again with obsidian, it will again indicate warm stone even though the molten stone has long since been removed.
 
 
Some things I'm unclear on. My results are a bit uncertain because of how flow pushes objects around it's difficult to get a good clear test. It's unclear to me so far if the molten stone will be removed when it is encased in obsidian, although no amount of time passing seems to remove these warm stone flags that are created this way. I've been cussing at this bug for a few days and still don't fully understand it yet. [[User:Doctorzuber|Doctorzuber]] 19:20, 31 March 2010 (UTC)
 
:From my experience, the "warm stone" flag is actually based entirely on the temperature of the tile - if you set some coal on fire, it'll cause the walls to show up as "warm stone" even though there's no magma present, and spirits of fire will also do this as they walk down passages. Normally, magma sets the current tile's temperature to exactly 12000 and appears to set all adjacent tiles to 10100, and when you make a batch of obsidian (and there aren't any molten globs present), it'll normally show up ''all'' warm for a while before all cooling down. If you're still seeing bits of warm stone, it's possible you have "hidden" globs of molten stone in the area (which could happen if any chunks of stone melted as the magma was flowing into the chamber) - check Z-Stocks under "globs" or "liquids" and see if there's anything there. --[[User:Quietust|Quietust]] 22:00, 31 March 2010 (UTC)
 
:: Right, that's consistent with my findings. however as I said, the warm stone flag seems to remain on after the stone is re-dug, the molten glob is removed, and the area is refilled with new obsidian. As for the molten stone encased in obsidian it appears to be impervious to cooling and or removal at the end of season as per normal giving an effectively permanent warm stone indicator. [[User:Doctorzuber|Doctorzuber]] 22:22, 31 March 2010 (UTC)
 

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