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IRC log for #minetest, 2017-04-03

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All times shown according to UTC.

Time Nick Message
00:00 Mator_ proller__ I haven't run into a generation speed issue, tbh
00:00 Mator_ but I've also only generated a menger sponge so far
00:04 paramat c++ mapgen will be much faster and will not cause lua lag, but you're just starting with MT ..
00:05 Mator_ yuh, I'm planning on moving on to C++ mods with MT soon enough
00:05 Mator_ also, it seems like this FreeMiner thing is based off of MT
00:05 Mator_ or vice versa
00:06 Mator_ structure/design looks incredibly similar
00:06 paramat good, we don't have c++ mods, but you can write a new core fractal mapgen
00:06 Mator_ ^that's what I was thinking :)
00:06 paramat freeminer is a fork of MT
00:06 Mator_ ah, that's what I just saw
00:07 paramat it had a decent fractal mapgen first
00:08 paramat then i wrote our one
00:10 rubenwardy we used to have a math mapgen
00:10 rubenwardy but it was remove
00:10 rubenwardy *removed
00:10 rubenwardy proller wrote that too
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00:15 paramat yes math mapgen had a not very good mandelbox
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00:50 Mator_ hmm.  I'm going to have to come up with point tests for some difficult fractals...
00:50 Mator_ which I always did with recursion in the past
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02:24 Mator_ mandelbulb generation is working
02:24 Mator_ but it's a bit slow on the interior
02:30 ThomasMonroe cool Mator_ is it a "mod", or is it still in developement
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02:57 Mator_ @ThomasMonroe: Still developing, it's a mod for now
02:57 Mator_ kind of slow
02:58 Mator_ you can find mods for different fractal object generations here: https://github.com/matortheeternal/fractal-miner
02:58 Mator_ as I work on them
03:00 epoch does papyrus spread to good soil that's next to it?
03:02 Mator_ it doesn't in minecraft, so I doubt it would in Minetest
03:02 epoch http://wiki.minetest.net/Category:Flora looks like it isn't.
03:02 paramat no it doesn't
03:03 epoch dang.
03:04 paramat good to see a mandelbulb, i don't know how to code those
03:08 paramat hm it's simpler than i thought
03:08 paramat btw we have vector helper functions here https://github.com/minetest/minetest/​blob/master/builtin/common/vector.lua
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03:15 paramat nice colours, slow indeed :]
03:27 Mator_ paramat thanks
03:27 Mator_ The palette is configurable
03:27 Mator_ along with other things, per comments
03:28 Mator_ and yeah, it's not TOO complicated once you know the algorithms
03:28 Mator_ the thing is it's a PITA to figure out the code that is available
03:28 Mator_ at least, it was for me the first time
03:28 Mator_ from the code that is available*
03:29 Mator_ I'll probably tackle mandelboxes next
03:30 Mator_ they're pretty similar to mandelbulbs in formula
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03:46 paramat will merge #5382 over the next few mins
03:46 paramat oops wrong channel
03:53 MinetestBot [git] paramat -> minetest/minetest: Cavegen/Mgv5/Mgv7: Add optional giant caverns 859141a https://git.io/vS8EQ (2017-04-03T03:49:32Z)
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14:49 DS-minetest hi
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15:13 fireglow one of my players wants to build laputa (a magic castle in the sky). How far above the surface does this have to be so there won't be any shadows on the ground below?
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15:52 DS-minetest is something wrong with daily ppa?
15:52 DS-minetest i still have that hud chat bug
15:52 DS-minetest with newest daily
15:53 DS-minetest updated a moment before
16:02 Tre did Mator finish last night with is project>?
16:02 DS-minetest https://forum.minetest.net/v​iewtopic.php?f=9&t=17155
16:02 DS-minetest or
16:03 DS-minetest !mod fractal_worlds
16:03 MinetestBot DS-minetest: Could not find anything.
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16:03 Tre fractal worlds
16:04 DS-minetest I'm still wondering about the daily pps.
16:04 DS-minetest ppa*
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16:28 Tre hi Mator_
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16:28 Mator_ o/
16:28 Mator_ Howdy
16:28 Tre hows the mod coming along
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16:38 Mator_ https://forum.minetest.net/v​iewtopic.php?f=9&t=17155
16:39 fireglow Mator_: cool stuff!
16:39 Mator_ ty :)
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17:15 DS-minetest i feel as if pointed_thing of node on_place is broken
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17:30 Tre hey Mator_ have you tried Lyapunov fractals?
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17:48 Mator_ Tre Lyapunov?  No.  I'm looking into it now.  :o
17:48 Mator_ These look 2d, is there a 3d algorithm?
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17:53 Mator_ They sound interesting, but I don't think there'd be a good 3d volumetric analogue.  I could be wrong.
17:53 Mator_ I'm also not a mathematician, so figuring out how to implement that sort of fractal in 3d might be above my head.  :S
17:54 Mator_ Actually, found a render of Lyapunov fractals in 3d: https://www.youtube.com/watch?v=6JFgkIvIxnM
17:55 nore Mator_: for fractals such as Mandelbrot, you can also make it 2D and use the number of iterations it takes to get out of the abs(z)<=2 disk to set the height
17:56 Mator_ nore in the case of the mandelbrot the 3d analogue is actually the Mandelbulb (sort of, it's not a direct analogue, technically)
17:56 nore (more precisely, I guess you would do that using a function such as tanh to set the number of iterations to some number between 0 and 1, and use 1 for those inside the set)
17:57 Mator_ I realize you can do things like that, but the visual result is important to me, not just the fact that it is fractal.  :)
17:57 nore yeah, I know that, I'm just saying that it can make some other iteresting fractals :)
17:57 Mator_ sure, there's TONS of algorithms and approaches out there
17:57 Mator_ I have barely scratched the surface :)
17:57 nore but it will clearly look very different, probably with some cliffs
17:57 nore anyway, just saying :)
17:57 Mator_ sure :)
17:57 Mator_ the issue I have with that sort of approach
17:58 Mator_ is you have low complexity on the height
17:58 nore yup
17:58 Mator_ which makes it more of a 2d fractal graphed on the y axis :P
17:58 Tre oh well, i just thought that they might be interesting
17:59 Mator_ Tre it's totally interesting! :)
17:59 nore (though, it might make worlds that could even be playable :))
17:59 Mator_ nore: any fractal world is playable!  so long as it's at least a little dense  :)
17:59 nore as I said, I have absolutely no idea what the result will be anyway :)
17:59 Mator_ I can smooth out the noise on the fractals I generate by using multisampling
17:59 nore Mator_: yeah, but some are more playable than others :p
18:00 Tre true, you couldalso try and implement a sort of psuedo-Lyapnov fractal by plotting one fractal against antoehr
18:00 DS-minetest I'm still wondering about the daily pps.
18:00 Mator_ Tre: That's still a 2d surface, I think
18:00 Mator_ just wibbly-wobbly
18:01 Mator_ :P
18:01 Tre no, use one fractal for the z-x and the other for the x-y, and then use some sort of algortihm to figure out the x-value
18:01 Mator_ yeah, I understand :)
18:02 Tre or use z as one of the parameters
18:02 Mator_ topographically it's still a 2d surface because you don't have more than one point given a coord
18:02 Tre scaled down of course
18:02 Mator_ so like, given a x,z coord, you'd have 1 y coord
18:02 Mator_ which has a point
18:03 Tre right
18:03 Mator_ that's great if you're generating a planar surface, like terrain
18:03 Mator_ but not if you want a volumetric object
18:03 Tre yeah touche
18:03 Tre it was a good idea though
18:03 Mator_ you can make it slightly more interesting if you use spherical coordinates though
18:04 Mator_ and stretch a 2d fractal across the surface of the sphere
18:04 Tre that would be cool, although a little slow on the generate
18:05 Mator_ eh, no slower than generating a mandelbulb
18:05 Mator_ mandelbulbs use spherical coordinates :)
18:05 Tre youknow someone ought to create a 4d minetest
18:05 Mator_ 4d? you mean transformation across time?
18:05 Tre no like fourth dimension
18:05 Mator_ or do you mean 4 spatial dimensions
18:05 Mator_ oh
18:06 Mator_ https://i.imgur.com/I1XBmEW.gifv
18:06 DS-minetest or change color of wool for 4th dir
18:06 Mator_ the issue with that is you have to morph the voxels
18:06 Mator_ which increases the cpu cost by a lot
18:06 Tre yeah
18:07 Tre it would still be awesome
18:07 Mator_ and voxel morphing/animation is actually a huge challenge in volumetric games
18:07 Krock perfect loop :D
18:07 DS-minetest cool
18:08 DS-minetest 19.7 MB O.o
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18:08 Mator_ honestly, I'll be happy if I can generate a giant mandelbox world in reasonable time
18:09 Mator_ lua is just a bit too slow
18:09 Mator_ :P
18:10 Mator_ if you guys like fractals, just watch some of these videos: https://www.youtube.com/res​ults?search_query=mandelbox
18:10 Tre ive seen most of them
18:10 Krock Mator_, well, if even LuaJIT is too slow only C++ code directly into the engine will help you
18:10 Mator_ Krock: I'm aware :)
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18:11 Mator_ Tre have you see Julius Horsthuis's videos?
18:11 Mator_ https://vimeo.com/juliushorsthuis
18:20 nore Krock: Mator_: you can try to disable mod security and use LuaJIT's FFI
18:20 nore (I'm a bit less sure about linking with gmp though)
18:20 Krock disable? just add an exception for the mod
18:21 nore Krock: I'm not sure the ffi is in the secure environment
18:21 Krock indeed. it could be blocked there too
18:22 DS-minetest question: does this look useful: https://github.com/minetes​t-technic/technic/pull/343 ?
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18:23 nore DS-minetest: interesting idea, need to think a bit about it
18:23 Mator_ nore Paramat has offered to help me incorporate it into the game's C++ code
18:23 Mator_ as a new world generation mode
18:23 nore Mator_: ooh, that's nice :)
18:23 nore there was a math mapgen once, which was removed due to a lot of glitches IIRC
18:24 Mator_ I've coded in C++ before, so I'm confident I can make it work.
18:26 DS-minetest I'm happy to have eye of gnome installed, it can fluently show the gif of https://i.imgur.com/I1XBmEW.gifv with only 60% of my cpu
18:29 DS-minetest bye
18:29 Krock replace .gifv with .mp4 and the file will be smaller and faster to render
18:29 Mator_ o/
18:29 DS-minetest Krock: interesting
18:29 DS-minetest (it was no irony what i wrote)
18:29 sfan5 Krock: no it will be literally the same
18:30 Krock sfan5, depending on the plugins/hw support
18:30 Mator_ https://vimeo.com/199433928
18:35 sfan5 Krock: no it's literally the same because .gifv is the page that embeds .mp4
18:35 Krock sfan5, 2.3 MiB vs 19.7 MiB. Almost literally the same, yes.
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18:36 Krock well, there's the raw gif and an mp4 file. not sure which one is played when calling gifv
18:37 sfan5 gifv is that thing imgur invented which is just a page embedding the .mp4
18:37 sfan5 "invented"
18:38 Mator_ https://blog.imgur.com/201​4/10/09/introducing-gifv/
18:38 Krock apparently it also has a fallback to the raw gif, if mp4 fails
18:38 Krock "video to gif" converter. Seems legit. basically a "video to video" converter
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18:41 Tre no i havent seen them, but they look AWESOME
18:42 Yst Minetest texture modifiers don't have a straightforward way to crop textures, do they?
18:42 Mator_ my mind...
18:42 Mator_ https://i.imgur.com/uTg6aaJ.gif
18:43 Tre what is that supposed to be?
18:44 Mator_ optical illusion
18:45 Tre of what?
18:45 Krock http://im-possible.info/images/art/fi​lms/simpsons/lisa-simpsons-object.jpg
18:45 Mator_ I found it on r/gonwild, which is a parody sub which posts mind-bending geometry
18:45 Tre oh ok
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20:31 troller Mator_, https://www.youtube.com/watch?v=4QHxc957GOQ
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20:43 Mator_ pretty awesome troller
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20:47 troller mandelbox was good, but default params not good
20:50 Mator_ mhm
20:51 Mator_ there's a lot of messing around to do still
20:51 Mator_ there are good generations, just gotta find them
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21:02 IhrFussel Guys my log states "2017-04-03 19:52:09: [Main]: INFO: signal_handler(): got SIGTERM, shutting down." but I wasn't even connected to the machine at that time so what could've caused the SIGTERM?
21:02 Mator_ ALTR+F4?
21:03 Mator_ idk
21:03 Mator_ ¯\_(ツ)_/¯
21:03 IhrFussel I was at the store between 19:40 and 20:10 and it happened at 19:52
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21:08 IhrFussel Right before the shutdown it says "user tried to connect but there are already max_users=40 players" ... now I cannot tell if my server really had 40 players but the log won't lie I guess
21:13 IhrFussel Ok...maybe the log does lie uh...I cannot find 40 connected players in the log...the last "List of players" before the shutdown contained 24
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21:16 IhrFussel That must be a bug...the log is FULL of those errors even though my server never had 40 connected
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21:22 IhrFussel Okay I know now what caused the SIGTERM...it was my emergency restart script which is supposed to fire when Minetest is stuck for some reason...still the incorrect player amount report issue remains
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21:24 Yst Wow. I found a way to crop, but it's needlessly complex and incompatible with the "[combine:" modifier.
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21:34 kaeza greetings
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21:34 Tre hi kaeza
21:38 xerox123 how do I have a players inventory drop on the floor when they die rather than something like keepinventory
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21:39 IhrFussel xerox123, look at the bones mod
21:39 Mator_ xerox123: wouldn't you just spawn the items in their inventory at their corpse, and remove items from the inventory?
21:39 Mator_ or what fussel said
21:39 Mator_ :P
21:40 calculon bones_mode = "drop" in minetest.conf
21:40 xerox123 oh, thanks calculon
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21:47 slendyman Hello
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21:52 ThomasMonroe hey calculon i didnt know you knew so much about minetest
21:53 calculon i don't know that much :)
21:54 calculon but i'm trying to write some mods, so i had a look at the code and the docs
21:59 ThomasMonroe what mods are you trying to make?
21:59 ronsor w 32
22:00 calculon for now i'm just trying random stuff to learn
22:00 calculon and each time i have a cool idea i realize that someone else did it before :p
22:01 ThomasMonroe hehe same here, about the ideas
22:01 kaeza I bet no one did a mob API yet
22:02 kaeza or an improved inventory
22:02 calculon huhu
22:10 ThomasMonroe they have done both
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22:17 Mator_ just come up with the most insane idea
22:17 Mator_ and no one will have done it
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22:32 kaeza also, just because somebody already did it doesn't mean you can't improve on the concept
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22:34 ThomasMonroe true im not saying that
22:37 calculon yes, sure
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23:04 Mator_ o/
23:31 rubenwardy !tell nerzhul https://github.com/minetest/minete​st/blob/master/.travis.yml#L16-L18
23:31 MinetestBot rubenwardy: I'll pass that on when nerzhul is around
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