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IRC log for #minetest-dev, 2015-09-11

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All times shown according to UTC.

Time Nick Message
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08:25 est31 ~tell hmmmm this might interest you: https://forum.minetest.net/vi​ewtopic.php?p=190703#p190703
08:25 ShadowBot est31: O.K.
08:25 est31 ShadowBot, you wont tell, I know it
08:25 est31 at least it never reaches me when I see in the log people saying ~tell est31
08:25 est31 either way, do your best ShadowBot, will you?
08:26 est31 thanks!
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08:44 nrzkt ~tell est31: you shall not pass
08:44 ShadowBot nrzkt: O.K.
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09:10 kilbith nrzkt: est31 don't receive your delayed messages because you put ":" after his nick -> doesn't work
09:11 kilbith the right way is : ~tell <nick> <msg>
09:20 nrzkt oh there is a trick :p
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17:26 rubenwardy #3168 and #3168 are duplicates and can be closed
17:26 ShadowBot https://github.com/minetest/minetest/issues/3168 -- Mod translation with a simple .mo file, with different languages for clients
17:27 ShadowBot https://github.com/minetest/minetest/issues/3168 -- Mod translation with a simple .mo file, with different languages for clients
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18:14 rubenwardy celeron55: does inchra-stats.minetest.net redirect to inchra.net via CNAME?
18:17 T4im dig inchra-stats.minetest.net: "inchra-stats.minetest.net. 600 IN CNAME stats.inchra.net."
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19:29 red1 for game#667 were should I put the text file describing the API?
19:29 ShadowBot https://github.com/minetes​t/minetest_game/issues/667 -- Add tnt API. by red-001
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19:33 rubenwardy https://github.com/minetest/minet​est_game/blob/master/game_api.txt
19:35 red1 ok thanks
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20:03 red1 does it take less time for lua to call a local function then a global?
20:07 VanessaE in theory locals are faster than globals for just about anything, but if it's just a single call that you do every so often, the difference is too small to notice
20:08 T4im rule of thumb: if you use it twice, put it into a local
20:08 VanessaE (versus say thousands of such calls over a short period of time - you might notice it then, depending on what the call does to begin with
20:08 VanessaE yep, that's about right
20:09 VanessaE the more important thing is you don't want to pollute the global sapce
20:09 VanessaE space*
20:09 rubenwardy > twice
20:12 red1 Does "local myfunction = global_function" make call it faster or slower?
20:12 VanessaE slower.
20:12 VanessaE you're forcing the interpreter to take an extra step to get to the actual function
20:12 T4im calling myfunction afterwards will be faster, since the local variable is accessable by index, but if you're using it only once afterwards, then what VanessaE just said
20:13 VanessaE now, if you *copy* the function entirely, then it'll probably be faster
20:13 red1 no I'm using it many times
20:13 T4im you see it often in lua that the document starts with something like: local minetest = minetest
20:13 rubenwardy Do some bench marks and find out
20:13 rubenwardy Shall I?
20:14 red1 Yes please
20:14 T4im make sure not to use jit, or the results will be unusable
20:14 T4im jit will simply optimize each time you run it
20:15 VanessaE the irony of t4im's statement about jit is that you generally never want to go *without* it ;)
20:15 T4im indeed :D
20:15 VanessaE (except for benchmarks of this type)
20:15 red1 game#667
20:15 ShadowBot https://github.com/minetes​t/minetest_game/issues/667 -- Add tnt API. by red-001
20:17 rubenwardy For 100,000,000 incrementations, with local: 1.09 seconds. With global: 5.10 seconds.
20:18 rubenwardy local test = 0; for i = 1, 100000000 do test = test + 1 end
20:18 rubenwardy with local not included for the global test
20:18 rubenwardy so it's five times slower
20:19 VanessaE sounds about right
20:19 rubenwardy however, the time to look up may be neglible compared to the time to switch to the function
20:19 T4im same factor as "Steve" http://lua-users.org/wiki/Op​timisingUsingLocalVariables
20:20 rubenwardy this is with plain lua
20:21 rubenwardy for function calling 20,000,000 times, 0.81s for local, 1.21 for global
20:21 rubenwardy so ~math calc 1.21/0.81
20:21 rubenwardy ~math calc 1.21/0.81
20:21 ShadowBot rubenwardy: 1.493827160493827
20:21 rubenwardy 1.5 times slower
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20:26 exio4 the global environment is dynamic and the local environment can be deduced statically
20:26 exio4 nothing surprising there
20:27 rubenwardy It's a table look up
20:27 rubenwardy _G
20:27 exio4 yes
20:28 rubenwardy game#671 wrong project, needs close
20:28 ShadowBot https://github.com/minetes​t/minetest_game/issues/671 -- Writing numbers bug
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23:19 cg https://github.com/minetest/minetest_game/pulls
23:20 cg and hello everyone
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23:21 cg https://github.com/minetest/minetest_game/pull/672
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23:35 VanessaE game 672 looks nice; engine needs to have some way to not hide the particles that are under the water when looking from above.
23:38 blert2112 building latest I get "‘FATAL_ERROR_IF’ was not declared in this scope
23:38 blert2112 ". Any clues for me please?
23:38 VanessaE no idea, blert2112.  pastebin the full build log
23:39 VanessaE make a new issue on minetest github repo if you can't solve it
23:51 blert2112 I will continue banging on it for a while and come back if I can't solve it.
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