DDraceNetwork - off-topic

what do you expect them to do if you’re no longer having an issue

morning

Yes.

1

@Overlord mean

06:04

Chain is only as strong as its weakeast link ( me )

Ryozuki

Click to see attachment 🖼️

This is actually peak internet

xd

Mornin

1

11:19

1

Mugi-chan✰

Click to see attachment 🖼️

Mugi-chan✰

Click to see attachment 🖼️

That Looks so fucking good

Ewan

what do you expect them to do if you’re no longer having an issue

xddddd

12:21

literally

kurwa блять

7

3

TsFreddie

kurwa блять

Co się stało? (edited)

EGYT

Co się stało? (edited)

Ni hao

1

ohayo

konichiva

How to do reflection? I have a vector of speed, that moves a dot into plane, that has the normal of rotation in degrees. After colliding, vector of speed must be mirrored with same speed with any rotation of plane or collide angle.

Nik_Hard

How to do reflection? I have a vector of speed, that moves a dot into plane, that has the normal of rotation in degrees. After colliding, vector of speed must be mirrored with same speed with any rotation of plane or collide angle.

180 - angle of your vector ?

15:24

prob

15:24

if I understood the question

Nik_Hard

How to do reflection? I have a vector of speed, that moves a dot into plane, that has the normal of rotation in degrees. After colliding, vector of speed must be mirrored with same speed with any rotation of plane or collide angle.

either mirror x or mirror y based on the axis the plane the vector is colliding with is on (edited)

Nik_Hard

How to do reflection? I have a vector of speed, that moves a dot into plane, that has the normal of rotation in degrees. After colliding, vector of speed must be mirrored with same speed with any rotation of plane or collide angle.

r=d−2(d⋅n)n

TsFreddie

r=d−2(d⋅n)n

Quick explanation, r is the reflected vector, d is the vector we are reflecting, n is the surface normal. d.n is proportional to the length of the projection of d onto n. (d.n)n is the component of d in the direction of n. Subtracting it once hence removes all "speed" going into the surface, subtracting it once more reverses the "speed" in that direction. Thus we have a 2 (edited)

I made a calculator with GUI in less than a kilobyte of Python :^)

EGYT

I made a calculator with GUI in less than a kilobyte of Python :^)

where src

meloƞ

where src

There you have it

16:43

Not sure about the license yet though

i have a perfect license

MilkeeyCat

i have a perfect license

WTFPL doesn't count

https://github.com/MilkeeyCat/milklang/blob/main/LICENSE.md

2

EGYT

There you have it

Aw, video doesn't want to play for some reason

16:48

Time to throw it into Kdenlive

1

Nik_Hard

How to do reflection? I have a vector of speed, that moves a dot into plane, that has the normal of rotation in degrees. After colliding, vector of speed must be mirrored with same speed with any rotation of plane or collide angle.

Imaginary numbers are key in solving this kind of problems

EGYT

Time to throw it into Kdenlive

here we are

Learath2

Quick explanation, r is the reflected vector, d is the vector we are reflecting, n is the surface normal. d.n is proportional to the length of the projection of d onto n. (d.n)n is the component of d in the direction of n. Subtracting it once hence removes all "speed" going into the surface, subtracting it once more reverses the "speed" in that direction. Thus we have a 2 (edited)

why are you so cool

EGYT

here we are

This program, before me stripping away all the bloat (like the window title, or comments, or CLEAR button), was ~4KBs, but now it is 996 bytes! (edited)

Now do it without any external libraries B)

TsFreddie

why are you so cool

I'm compensating for being lame in other aspects of life

EGYT

This program, before me stripping away all the bloat (like the window title, or comments, or CLEAR button), was ~4KBs, but now it is 996 bytes! (edited)

Maybe I will find a way to make it even smaller, but maybe I won't (edited)

アリヂン

Now do it without any external libraries B)

Too cool for me

Learath2

I'm compensating for being lame in other aspects of life

from what i've heard you're cooler than 85% of other dudes - stop talking yourself down like that ffs

16:53

16:54

looking forward to hitting a bar with you sometime lmao

And I look forward to learning something usefull and not wasting another summer by watching YouTube and playing videogames >_< (edited)

write a web server in C gigachad

MilkeeyCat

write a web server in C gigachad

Not funny

A webserver riddled with 1000 buffer overflows and use-after-free errors? Seems like a great idea

average rust andy take :YEP:

アリヂン

A webserver riddled with 1000 buffer overflows and use-after-free errors? Seems like a great idea

That's how we like them

17:01

Code without bugs is like food without seasoning

3

Does that imply that rust coders eat garbage?

EGYT

And I look forward to learning something usefull and not wasting another summer by watching YouTube and playing videogames >_< (edited)

Like, Godot, at least to the level that I can make a game I wanted to make for a long time

Imagine if matricks had teeworlds right from the start and you couldn't hook through corners ganyu_scared

AH damn, DD wouldn't exist even

17:02

Physically accurate HF doesn't exist too

Yep, if conservation of energy was respected, ddnet would be much more boring

17:03

(I only jest btw. These are not bugs of the same category)

still waiting for a bug that abuses buffer overflows to casually gain more speed while hammerflying xdd

RCE by correctly timing your inputs

1

Teero

still waiting for a bug that abuses buffer overflows to casually gain more speed while hammerflying xdd

there was already one like this

17:15

at the beginning of autumn i accidentally found a server on which the physics was broken.. the hook was 3 times stronger and the hammer hit harder

17:15

and the funny thing is that such a bug was on only one server

17:25

Think about it, the administration said that I wrote a complaint about a 5-minute ban, and everyone closed the complaint without banning the person who started it

ARTEMIS

Think about it, the administration said that I wrote a complaint about a 5-minute ban, and everyone closed the complaint without banning the person who started it

are u braindead?

17:31

ARTEMIS

Think about it, the administration said that I wrote a complaint about a 5-minute ban, and everyone closed the complaint without banning the person who started it

EGYT

Click to see attachment 🖼️

thats not about ban even, are u blind?

17:32

hes literally typing !addwar

17:32

typical multeasymap blocker

Mugi-chan✰

thats not about ban even, are u blind?

Yes :^(

17:33

-4 dptr

Learath2

Quick explanation, r is the reflected vector, d is the vector we are reflecting, n is the surface normal. d.n is proportional to the length of the projection of d onto n. (d.n)n is the component of d in the direction of n. Subtracting it once hence removes all "speed" going into the surface, subtracting it once more reverses the "speed" in that direction. Thus we have a 2 (edited)

Okay, that works with normal vector 0;1 and vector -1;0. But if normal is -1;-1, then ray just go inside himself.

Nik_Hard

Okay, that works with normal vector 0;1 and vector -1;0. But if normal is -1;-1, then ray just go inside himself.

Are your normals oriented correctly?

17:45

That corner surface looks like it should have normals -1, 1 or 1, -1. Not -1, -1

17:49

Are you doing the dot product properly?

ARTEMIS

Click to see attachment 🖼️

блочил вне пг - блочил, тот человек блочил - блочил, скорее всего и его забанили

Oh btw are your normals, well normalized? It'll work for direction but the lengths will be wrong otherwise

Learath2

That corner surface looks like it should have normals -1, 1 or 1, -1. Not -1, -1

Screen space. x=0, y=0 in left up corner. Normal watching left-top will be [-1;-1] right-down - [1;1]

Learath2

Oh btw are your normals, well normalized? It'll work for direction but the lengths will be wrong otherwise

Normalized? Like smoothed?

17:57

I'll explain my simulation rn.

Normalized = Length is 1

Nik_Hard

Normalized? Like smoothed?

Unit length, but this isn't your issue now

Nik_Hard

Screen space. x=0, y=0 in left up corner. Normal watching left-top will be [-1;-1] right-down - [1;1]

Are you sure all your vectors are in the same space? Including the one you are reflecting?

Like that. After collision, ray mirrors, using formula.

Learath2

Are you sure all your vectors are in the same space? Including the one you are reflecting?

You mean global/local? Maybe I forgot to change it.

1 -1 это право верх

No, all in local space of collision pos.

а не право вниз

Nik_Hard

Like that. After collision, ray mirrors, using formula.

I think this is your issue. Your rays are in different spaces. That vector you are reflecting is [1, 1] in screen space

zhn

1 -1 это право верх

представим, что у нас нормальная система координат, а не экранная

Nik_Hard

Screen space. x=0, y=0 in left up corner. Normal watching left-top will be [-1;-1] right-down - [1;1]

дак я по этому сужу

18:05

лево верх -1 -1 говоришь

18:06

ладно понял про что ты

18:07

у тебя программа точно работает в привычной системе координат?

18:07

только рендеринг уже использует экранную (edited)

This formula is general enough to hold for all vector spaces of all dimensions btw. So you can be sure it's an implementation issue

программа нет, просто инвертирую игрек

может программу покажешь, легче отладить по коду

Learath2

This formula is general enough to hold for all vector spaces of all dimensions btw. So you can be sure it's an implementation issue

Okay, i'll try to redo program.

zhn

может программу покажешь, легче отладить по коду

Не надо

Nik_Hard

Не надо

да давай раз уж пошло