DDraceNetwork - developer

DDraceNetwork

Development / developer

Development discussion. Logged to https://ddnet.tw/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 2020-07-21 00:00:00Z and 2020-07-22 00:00:00Z

How does fast download work in ddnet server? is it only available for ddnet clients? how can i implement it for my 0.7 server? i have been trying a while now, but nothing really worked

https based with fallback to the old ddrace fast dl

06:52

from maps.ddnet.tw

06:52

but we just inherited the ddrace fast dl, i never read the source code

git gut at noscoping @pinkrat

07:57

@deen so maps have to be hosted at maps.ddnet.tw to support fast dl? And server could also be a vanilla server huh?

07:57

@fokkonaut rls BlmapChill on ddnet lmao

They have to be hosted to heinrich5991

https://github.com/DDRace/teeworlds/pull/196/commits/cae8c68d8782dfd31017c12915065a68c72729cc

08:21

We just sent chunks before being asked

08:25

(you should probably implement it the new way, send a lot of chunks when requested, instead of this weird way of sending them in pumpnetwork)

08:27

Actually looks like ddnet broke fastdownload long ago

08:31

@heinrich5991 https://github.com/ddnet/ddnet/commit/b510db9ee9478c89aec7de6c376a7d34b4732ad2

08:32

Doesn't this only send mapwindowmany chunks at the start then fall back to sending the chunks slowly?

08:35

Also looks like it wouldn't work well at all, when you send the chunks, the client will send requests for +1 of each, the old implementation dropped these requests

Chunks :O

gras

gold

emarald

dia

Holzaxt

iron

red

uf, I see what you did, sort of tricking the client into asking for (mapwindow + 1) chunks at a time

08:49

Looks prettier but I think it's much more convoluted than what we had before

hm? what is it you don't like about the new implementation?

09:25

we always send n chunks ahead

09:25

where n is the map window

Used to be that we just sent the chunks, now we rely on the client asking for them

I see, now we're relying on one specfic download implementation

09:34

that always sends requests for (n+1) when receiving n

I guess it's a fair assumption, not as easy to read

should we make ddnet minecraft server?

Wait for Hytale poggers

poggers

chillerdragon had one

11:41

dont know if its still running

sure lgl.zillyhuhn.com is the official teeworlds minecraft server :D

12:24

latest vanilla version and ofc no rules or admins as any good game server

what is griefing

the cycle of life @heinrich5991

12:27

spawn also tends to get a bit destroyed but due to the low inactivity the server is still chill https://zillyhuhn.com/img/lgl.png

Embedded image

what is this huge mountain?

12:31

manual work?

lavacast

12:32

spill sume wadda and then some lava then start over

ah, nice idea

2b2t is the endgame of lawless wastelands

2b2t?

https://en.wikipedia.org/wiki/2b2t

2builders2tools (2b2t) is a Minecraft multiplayer server founded in December 2010. 2b2t is the oldest anarchy server in Minecraft, as well as one of the oldest running servers of any variety. 2b2t's world is also one of the longest-running unaltered server maps in the game, wh...

Shows you that anarchy, truly is the most idiotic way to govern anything

13:34

Can't even work in the smallest of scales, a minecraft server

no 2b2t works

13:35

u dont have to worry about hackers getting an unfair advantage

2b2t isnt too small its bigger than teeworlds @Learath2 and it works well

Ah yes, that's how I'd define working well. The entire server is a desolate wasteland for tens of thousands of blocks, anything built that can survive past 3 days is considered a success

13:47

I long yearn for the day that we use anarchy in my country so that people can vandalise my house

justatest

1

just walk out far enough

@Learath2 well u dont have ur life at stake on a minecraft server "anarchy"

14:36

im sure real world anarchy would be pretty different

14:36

i imagine it like full of mafias

14:36

or maybe not

it'd end up reinventing proper societal rules again

btw did u know catalonia in its 30' is one of the closest examples of anarchy

14:37

https://en.wikipedia.org/wiki/Anarchism_in_Spain

Anarchism in Spain

Anarchism in Spain has historically gained much support and influence, especially before Francisco Franco's victory in the Spanish Civil War of 1936–1939, when it played an active political role and is considered the end of the golden age of classical anarchism. There were sev...

14:37

https://en.wikipedia.org/wiki/Revolutionary_Catalonia

Revolutionary Catalonia

Revolutionary Catalonia (21 July 1936 – 1939) was the part of Catalonia (autonomous region in northeast Spain) controlled by various anarchist, communist, and socialist trade unions, parties, and militias of the Spanish Civil War period. Although the Generalitat of Catalonia w...

14:38

Homage to Catalonia written by George Orwell (the same as 1984) explains some of it iirc

14:38

cuz he went to catalonia to fight in the war

As long as there are groups of people that have advantages over others, you end up creating something the sorts of modern government

14:39

Hm, don't know much about the 30s, should be interesting to read

well its spain/catalonia history

14:40

so probs nobody knows it outside here

14:40

i always find it amazing that George Orwell came here

it's interesting to read about others history

@Learath2 I tried the way of heinrich, I found that commit too. But for me the errors error sending data or too weak connection happened

The discord debugger is out of commission, please try again later

irc debugger works 24/7

@Learath2 quite nifty gdb extension https://gef.readthedocs.io/en/latest/

Home - GEF - GDB Enhanced Features documentation

None

Yeah already have it everywhere

oh nice

15:20

any other nice stuff you have?

pwntools is quite useful

ah yea, I use that for exploit devel, too

15:22

it's quite annoying though, destroys your terminal, checks online for updates if not opted out of

yeah, the downfall of overambitious projects

@Learath2

15:35

"Yeah already hav it everywhere"

15:35

busted didnt u yell at me for having a gdb extension while not doing exploits? :D

I disable it when I'm not doing debugging at the assembly level

i was searching through the wikipedia and i found this https://en.wikipedia.org/wiki/Z-order_curve, i searched a bit and if i understand correctly this can be used for tilemaps to know the render order of tiles? i also found this one https://en.wikipedia.org/wiki/Hilbert_curve

A Hilbert curve (also known as a Hilbert space-filling curve) is a continuous fractal space-filling curve first described by the German mathematician David Hilbert in 1891, as a variant of the space-filling Peano curves discovered by Giuseppe Peano in 1890.Because it is space-...

15:41

justatest

Why would you need a space filling curve?

15:44

It's good for cache performance

that gdb extension looked fine for source based debugging as well

@Learath2 i found it being used in a tilemap implementation of a game engine

@heinrich5991 the disassembly and the register view take up a lot of space that's usually not very useful

fair

15:44

have you seen the heap bins command?

15:45

looks very cool for developing heap exploits

https://forums.tigsource.com/index.php?topic=40832.msg1173956#msg1173956 this is what I thought of when I first saw the hilbert curve

Return of the Obra Dinn [Releasing Oct 18]

Return of the Obra Dinn [Releasing Oct 18]

15:51

btw this devlog is an absolute goldmine, the guy is seriously brilliant

15:52

@heinrich5991 heap bins does look useful, didn't get to use it yet though.

15:53

Oh another interesting gdb plugin is "exploitable"

15:53

I used it quite a bit when trying to fuzz squirrel

link?

https://github.com/jfoote/exploitable

jfoote/exploitable

The 'exploitable' GDB plugin. I don't work at CERT anymore, but here is the original homepage: http://www.cert.org/vuls/discovery/triage.html - jfoote/exploitable

how does it do it though

15:55

couldn't find anything specific in the readme

When you get dozens of crashes from afl, it's nice to get an initial filter

15:56

"exploitable iterates over a list of ordered "rules" (lib/rules.py) to generate a Classification (lib/classifier.py). If the state of the application running in GDB matches a rule, exploitable adds a corresponding "tag" to the Classification."

15:57

It obviously is as good as it's rules

do you have an example of what it outputs?

uuuh, if the vm still works I can get you an example

'Science should not stand in the way' of [redacted], White House Press Secretary Kayleigh McEnany says

(edited)

16:01

nice quote…

16:01

[redacted] by me

gef➤  exploitable
Description: Access violation near NULL on destination operand
Short description: DestAvNearNull (15/22)
Hash: 2b14aaf0d3d1ceb3f10f835abd375541.9dd223ea44a31949257512f2e8893d35
Exploitability Classification: PROBABLY_EXPLOITABLE
Explanation: The target crashed on an access violation at an address matching the destination operand of the instruction. This likely indicates a write access violation, which means the attacker may control write address and/or value. However, it there is a chance it could be a NULL dereference.
Other tags: AccessViolation (21/22)

Sorry irc cba to paste it in a site

ah nice

[ddnet:def--patch-1] 1 new commit

4d496f6 Polish update by TortiLeq - def-

21:57

[ddnet/ddnet] New branch created: def--patch-1

21:57

[ddnet/ddnet] Pull request opened: #2521 Polish update by TortiLeq

Fireball-Teeworlds

[ddnet/ddnet] Issue closed: #2508 Hook sounds disappearing for players hooking other players

I have the feeling Sixup sounds are doubled for other players, just by looking at the code

23:14

0.7 handles sounds for Hook attaching to players/ground/nohook clientside, for all players

23:15

so this PR should work for yourself, but if you are a 0.7 client and someone else hooks you or anybody close to you, I think you should hear 2 sounds

23:15

check out vanilla/gameclient.cpp, ProcessTriggeredEvents and where its getting called (same file)

23:16

also, 0.7 vanilla doesnt send any hook sounds to the client, this is just a guess, I cant test it right now

23:17

So we would need a NonSixupTeamMask, excluding all Sixup players for these hook sounds

23:22

https://github.com/teeworlds/teeworlds/blob/master/src/game/client/gameclient.cpp#L1094

23:22

events are only triggered for other players here: https://github.com/teeworlds/teeworlds/blob/1846c74467e8a95a44c1ba972455e4da15083e66/src/game/client/gameclient.cpp#L1298

23:23

And here for the local character: https://github.com/teeworlds/teeworlds/blob/1846c74467e8a95a44c1ba972455e4da15083e66/src/game/client/gameclient.cpp#L1585

Exported 124 message(s)