DDraceNetwork - developer

DDraceNetwork

Development / developer

Development discussion. Logged to https://ddnet.org/irclogs/ Connected with DDNet's IRC channel, Matrix room and GitHub repositories — IRC: #ddnet on Quakenet | Matrix: #ddnet-developer:matrix.org GitHub: https://github.com/ddnet

Between 2024-06-06 00:00:00Z and 2024-06-07 00:00:00Z

<ChillerDragon> omg @jxsl13 you already did huffman in golang -.- i just spent 3 days on that shit xd

01:48

<ChillerDragon> i know you said you wanted to do it at some point but i thought you never started

does the client know the server version?

[ddnet/ddnet-data-svg] Issue opened: #58 [Question] What about files in "/data/maps/"?

Are these files also being considered? The maps have some embedded images inside and also are inside DDNet data folder, so technically this should be true, but still want to be sure.

<ChillerDragon> dont think so @Tater

02:35

<ChillerDragon> but not sure

I was thinking the same but I didn't look very hard

<ChillerDragon> i mean there is /info :D

02:38

<ChillerDragon> @jxsl13 @Learath2 how do go variable naming? if i have a struct node how do i call the instance variable?

02:38

<ChillerDragon> Seems like some people like single letter variable names those make me nervous. Is that really the good golang style?

02:40

<ChillerDragon> I can't call the struct Node because it should be private. I can't shorten it without being weird nod nd or using a single letter which seems wrong n. I can't prefix the struct with snode because nobody seems to do that ._.

ws-client

<ChillerDragon> i mean there is /info :D

wdym /info?

02:41

oh the server command lol

<ChillerDragon> ye you can scrape that from the chat message

02:41

<ChillerDragon> even commit hash :D

I don't have any immediate use for it, I was just wondering if the server is already sending it (edited)

02:42

I just thought it is weird that the server uses client version to check for client capabilities but the client uses server cap flags to check for server capabilities. I figure they could both just use version?

<ChillerDragon> ouuu or should i call my struct huffmanNode ? but that is also discouraged if the package is already called huffman

02:44

<ChillerDragon> @Tater allows for custom servers implementing partial capabilities

could call it huffTreeNode of HTreeNode or HNode

<ChillerDragon> oh right

02:44

<ChillerDragon> i could call it treeNode

02:45

<ChillerDragon> not too nice i like node -.-

ws-client

<ChillerDragon> @Tater allows for custom servers implementing partial capabilities

but the client doesn't get this privilege

<ChillerDragon> then add that feature @Tater

I'm not really interested in disrupting network protocol that much for something I don't need anyway lol

<ChillerDragon> disruptive technology is the future

02:47

<ChillerDragon> like 0.7

yes but ddnet protocol is like blockchain, you can never delete it later

<ChillerDragon> so ddnet-pg is like bitcoin gold?

lol

<ChillerDragon> the standard library should be the gold standard of ones language style guides right?

02:53

<ChillerDragon> So single letter instance variables it is ... :c

<ChillerDragon> they didn't even bother to call stringReader reader or something :D

03:11

<ChillerDragon> https://github.com/golang/go/blob/45967bb18e04fa6dc62c2786c87ce120443c64f6/src/fmt/scan.go#L86-L93

go/src/fmt/scan.go at 45967bb18e04fa6dc62c2786c87ce120443c64f6 · go...

The Go programming language. Contribute to golang/go development by creating an account on GitHub.

morning peeps

morning golang enjoyers and others

github-merge-queue[bot]

[ddnet:master] 2 new commits

60f3b5f Unify editor UI mouse handling with CUi - Robyt3 85888c3 Merge pull request #8456 from Robyt3/Editor-UI-MouseHandling - def-

04:39

[ddnet/ddnet] Pull request closed: #8456 Unify editor UI mouse handling with CUi

var node node ?

06:09

node := node{
    // ....
}

06:14

https://github.com/jxsl13/twapi/blob/master/compression/huffman.go

twapi/compression/huffman.go at master · jxsl13/twapi

the twapi package is a framework to interact with Teeworlds servers and masterservers. It is slowly being developed to allow working with demos and maps as well as simulating a teeworlds client. Cu...

jxsl13

var node node ?

Damn golang looks horrible

[ddnet-web:master] 1 new commit

5ddfff1 Add RUS funding note - def-

Tater

I just thought it is weird that the server uses client version to check for client capabilities but the client uses server cap flags to check for server capabilities. I figure they could both just use version?

the server capabilities is so that custom servers can customize the client instead of opting into lots of ddrace features by version number

08:20

what can we do against reimplementing every simple library into every programming language?

08:21

so much wasted time, the computer already knows how to huffman-decode 12 ways, why can't we easily reuse that…

ya think? i find golang to be pretty good in terms of readability

golang in particular seems to have a "write it again yourself from scratch" sentiment, kinda like c

08:31

I see so many projects that implement tons of basic stuff in their repo instead of using library's idk why

heinrich5991

the server capabilities is so that custom servers can customize the client instead of opting into lots of ddrace features by version number

Yeah but some of them are used for stuff that the server has no reason to customize and should just be version based.

I think go doesn't interoperate well with C ABIs, perhaps that's why

Tater

Yeah but some of them are used for stuff that the server has no reason to customize and should just be version based.

can you give an example?

SERVERCAPFLAG_SYNCWEAPONINPUT

08:34

this is just a flag that says the server fixed a bug

yea, I suppose that could be a version

also SERVERCAPFLAG_PINGEX ?

08:37

someone wants to remove ping?

08:37

actually I have no idea what this does

yea, that, too

ok I guess it just changes the ping protocol

it says that the server supports the better ping protocol

yeah I see that now

08:40

I thought it was doing the reverse initially

@Learath2 did you know go wastes cpu cycles on storing args/return values on the stack? oO https://dr-knz.net/go-calling-convention-x86-64.html

The Go low-level calling convention on x86-64

Note The latest version of this document can be found online at https://dr-knz.net/go-calling-convention-x86-64.html. Alternate formats: Source, PDF. Introduction This article analyzes how the Go compiler generates code for function calls, argument passing and exception handling on x86-64 targets. This expressely does not analyze how the Go …

lol

have you seen this? https://www.dolthub.com/blog/2023-10-20-golang-pitfalls-3/

Image attachment

They're called Slices because they have Sharp Edges: Even More Go P...

Blog for DoltHub, a website hosting databases made with Dolt, an open-source version-controlled SQL database with Git-like semantics.

heinrich5991

I think go doesn't interoperate well with C ABIs, perhaps that's why

Yep, it all has to go through cgo which is slow

Learath2

Yep, it all has to go through cgo which is slow

is there a way to fix that?

08:53

what would I need to do to create a go-native library?

08:53

I want to write it in a language that's not go

Yes, gccgo doesn't have the same issue

and it should compile using the standard go command, not cgo

Ah you want the library to be go native but not in go. Hm, I think you have not much of a choice there

how is the go standard library implemented? it needs to have some sort of (I'm missing the word here, backdoor?) so that it can implement syscalls, call winapi, etc..

08:56

chatgpt does not know the missing word here

08:57

@Learath2 does go have the ability to link go-native libraries in binary format? does it have a way of writing functions in assembly? (edited)

iirc go does raw syscalls on linux

09:14

or maybe they changed that

but how does it do them? compiler support?

09:16

or can you somehow express syscalls in go, e.g. via assembly?

Uhm, you can link to assembly, they generate syscall stubs which they call into (edited)

Learath2

Uhm, you can link to assembly, they generate syscall stubs which they call into (edited)

a-ha!

09:17

so I can compile my non-go library (using go calling convention) to assembly and then link to it using go?

https://tip.golang.org/src/cmd/compile/abi-internal

The Go Programming Language

09:18

This document describes Go’s internal application binary interface (ABI), known as ABIInternal. Go’s ABI defines the layout of data in memory and the conventions for calling between Go functions. This ABI is unstable and will change between Go versions. If you’re writing assembly code, please instead refer to Go’s assembly documentation, which describes Go’s stable ABI, known as ABI0.

09:18

https://tip.golang.org/doc/asm

A Quick Guide to Go's Assembler - The Go Programming Language

Oh actually, they don't do this entirely in asm anymore. They ported the argument preparation and return retreival to go. So there is only one part remaining and that's the very call itself. With RawSyscall

heinrich5991

so I can compile my non-go library (using go calling convention) to assembly and then link to it using go?

You'll have abi issues as ryozuki pointed out

09:22

But yes, you can sort of make it work if your library is ABI0 compatible

why only sort of make it work?

09:23

ah, because it's abi0 intead of abiinternal? fair enough

Calls between them work fine but there is some overhead iirc. (much much less than cgo)

Learath2

Calls between them work fine but there is some overhead iirc. (much much less than cgo)

this actually looks pretty cool. perhaps we should make a abi0-go-asm backend for llvm ^^

09:34

so that go can finally use libraries written in other languages without a lot of overhead

Tbh, I don’t know how the calls to such libraries would look like from go. You need to mark your function abi0 on the assembly so go calls it with that convention. You’d have to generate a trampoline on the go side still even if empty

why do I need a trampoline?

I wonder if there is some deep dark part of the library that has a way to cast an unsafe uintptr to a function pointer to an abi0 function

have to go (haha) now, but I'm interested in getting back to this. write your comments, I'll read them

heinrich5991

why do I need a trampoline?

Say you load your new library into memory. Put it into executable memory, how do you call into it? Get a pointer to the symbol, and cast it to a function pointer. Go will assume it’s ABIInternal when calling it, there is no way to mark that function pointer ABI0 afaik

09:39

Atleast not one I know, but I’m fairly new with go anyway so idk

https://words.filippo.io/rustgo/ someone gave something like this a try

rustgo: calling Rust from Go with near-zero overhead

[русский [https://habrahabr.ru/post/337348/]] Go has good support for calling into assembly, and a lot of the fast cryptographic code in the stdlib is carefully optimized assembly, bringing speedups of over 20 times. However, writing assembly code is hard, reviewing it is possibly harder, and cryptography is unforgiving

I swear discord are the worst in app dev

09:57

Since the last update I have to click a bit above

Learath2

https://words.filippo.io/rustgo/ someone gave something like this a try

ah nice, I had something like this in mind

They took the trampoline approach though, not getting llvm to spit out abi0 compatible symbols

https://ir.amd.com/news-events/press-releases/detail/1201/amd-accelerates-pace-of-data-center-ai-innovation-and

AMD Accelerates Pace of Data Center AI Innovation and Leadership wi...

Browse AMD’s company-wide and financial press releases.

https://news.ycombinator.com/item?id=40594533

skilled

FBI has obtained 7k Lockbit ransomware decryption keys

https://cdn.discordapp.com/attachments/976556089611018322/1248272972708446268/2024-06-06-155056_1916x1076_scrot.png?ex=6663104c&is=6661becc&hm=47e486f35513ce297f7886c5b651ae79e26d37e157020cc9556f19f0b3e9e491&

Embedded image

@meloƞ

14:28

spacex did a masterclass at the end aswell

I DIDNT SEEE

14:29

FUUUUUU

1

almost perfect, mostly, it was damn amazing

14:29

lmaoo rip watch replay

14:29

they lost a wing but it soft landed aswell

Eh wtf that works? How do I know which is type and which is variable then

Replying to @jxsl13 var node node ?

https://jcdav.is/2015/10/06/SIGSEGV-as-control-flow/

func nodder(node node) {}

nods

14:41

you know by semantics

14:41

where a variable is expected, tue variable is used

14:41

the

14:41

and vice versa

Coming from C the Symantics im used to are swapped so it’s confusing

14:44

But ye is it good style to name variables the same as structs?

@meloƞ https://youtu.be/rXRVtt8M9oY?t=1184

Wow! SpaceX Starship re-enters Earth's atmosphere during 4th flight...

Hostnames can't have spaces, but my printer announces it's name with spaces, does anyone know how one is supposed to encode spaces when tyring to resolve it using mdns?

I called my node variable n

15:10

so, it doesn't matter how you call it

Learath2

Hostnames can't have spaces, but my printer announces it's name with spaces, does anyone know how one is supposed to encode spaces when tyring to resolve it using mdns?

figured it out, these things get a different hostname if they advertise a name with spaces and shit

https://davidlattimore.github.io/posts/2024/06/05/speeding-up-rustc-by-being-lazy.html

jxsl13

I called my node variable n

I often use one letter names to annoy people that care about variable naming too much

i use them all the time

17:33

as long as they're only rly used in like narrow scope

17:33

i thought everyone did that

huffman is a fuckup in itself, good variable names will not help anyway, gotta comment your code for yourself and the rest of the world or do it like I did, iterate until the implementation works and be happy.

Ewan

as long as they're only rly used in like narrow scope

that's usually the go to tradeoff

Original message was deleted or could not be loaded.

Well having a chat never hurts. Why did you expose the head hunter like this?

xd

19:18

ok ill delete

19:18

but 600k seems unreal

If anyone is paying that much it's those companies he mentioned

19:24

But yeah sounds a little insane to me too

600k crazy

19:39

euro?

at least not pounds

github-merge-queue[bot]

[ddnet:master] 2 new commits

fcbd1fb Fix worst local variable style offenses - ChillerDragon f494826 Merge pull request #8154 from ChillerDragon/pr_worst_style_offenders - Robyt3

20:36

[ddnet/ddnet] Pull request closed: #8154 Fix worst local variable style offenses

[ddnet/ddnet] Pull request closed: #8342 Keep respawned players in multi view list on pvp servers

21:07

github-merge-queue[bot]

[ddnet:master] 2 new commits

4f4f326 Keep respawned players in multi view list on pvp servers - ChillerDragon 989a376 Merge pull request #8342 from ChillerDragon/pr_multiview_pvp - Robyt3

hello is anyone still on irc

21:39

@deen @heinrich5991

21:40

i got banned from ddnet servers for EVA

21:40

i think it is not a fair ban

21:40

i am requesting unban

21:40

is @Lereath2 here

21:40

@Learath2 *

21:41

@snail

21:41

@skeith

21:41

is anyone here

21:41

@Q

did u try to ping qshar

idk

21:42

theres someone on irc named @Q

21:42

also KOG SUCKS

21:43

@Learath2 @snail @gdin @skeith @robyt

21:43

@murpi @deen

21:44

@melon

21:44

HELPPPPPPPPPPPPPPPPPPPPP

21:44

i need to play dummy drag race network

Your help request has been received, your ban is now permanent. Thank you for contacting ddnet customer service

NOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO

21:46

i want permanent unban

21:46

not ban pls

21:47

@Learath2 is bully i want new judge

21:47

@deen pls wake up

21:47

the admins online are not nice

21:48

gdin was nice admin where did he go

Your request for a new judge has been received. It will be processed in 10 to 12 months

KEKSad

2

toxic ddnet leadership has pushed out the good staff :(

This is the first time i've seen Learath having fun trolling someone. Respect zombie toad

21:49

That must be personal xD

No more nice people around, you should probably just permanently leave this very toxic community

i think your chances of success would be way higher had you pinged someone one time and left it there. also just depends on what you did for the ban in the first place

21:50

even if you didn't ping the right guy there are lots of eyes on the general chat so someone would have seen it anyway lol

21:50

i have personally seen deen humor tickets

21:50

like

21:50

just chill

every second without ddrace is pain

21:51

i cannot take it

:(

good thing we have lan servers

no points on lan servers

Your request for an addiction counselor has been received. An addiction counselor will contact you within 2 to 4 weeks. We apologize for the delay

@lagar help

21:54

@Lagar

it's over dude

ur turkish friend learath is hate me

u think lagar can trump lerato

pls tell him im nice

21:55

they both turk

21:55

they have bond

i respect the effort

@Learath2 i bet you dont even play ddnet anymore

21:56

you just keep admin so you can troll me

Exactly, why else would I stay around?

can you be nice for 1 time and unban me pls

22:00

@Learath2

What were you banned for anyway? Were you being racist, botting or spamming this time?

i told u i get ban for EVA

I meant as in what ban were you evading?

i never botted on ddnet

22:05

but i wasnt evading

Ok, you were botting I see a ban for botting there

22:06

I'll give you one simple advice to avoid this happening in the future. Don't bot

i have ddnet client

22:06

i do not have noby client

DDnet client with some nice sprinkle of

perhaps

no i have official build from ddnet.tw/downloads

22:11

i only used fire assist on fng 1 time

22:11

i never have bot on ddrace

22:13

@Learath2 are u still there?

no I'm asleep

pls unban me before you go sleep

22:17

@Learath2

you'll have to wait until the mod who banned you for botting gets back, which will be tomorrow, which is when your ban expires anyway, try not to bot in the future

i did not get banned for botting

22:18

i got banned for EVA

we use EVA as short for botter

i can send demo

22:20

i never bottted

22:20

wait u can check teehistorian

not in bed I can't

im top player like N9mkOik i would never bot

@Learath2 ddnet needs usa admin

22:29

its racist for only having europeans

I'm close enough to middle eastern, it's ok

oh you are?

22:30

i love middle eastern culture

22:31

all woman should live in kitchen and not be seen by other men

22:31

now unban me please my brother

Are you sure you aren't a racism bot?

no i am human

damn the double whammy

make @gdin admin again

22:36

or @noby

22:37

noby hasnt played ddnet in years

22:37

he would make a perfect admin

22:39

@Learath2 are you still awake

22:41

@Learath2 did you receive my previous message

22:41

is anyone there

what are you expecting to happen?

i expect @Learath2 to respond

22:43

but i think hes falling asleep

22:43

@murpi can you help me now

Interesting individual

Exported 257 message(s)