The Nineteenth Byte

Alien G

4:00 AM

@Geobits Not anymore.

I was stupid then, less stupid now.

Geobits

Then I don't really see what the problem is. The mouse position shouldn't change when rotating.

Alien G

Current solution (That doesn't work)

pastebin.com/hij9uuD6

It is something with the math @GamrCorps gave me.

Also, sorry for the grimy code ;D

Geobits

I have no idea what the problem is, though. Just looking at the angle formula doesn't really tell me anything.

Alien G

Well let me send a picture then... (A terribly drawn one)

Geobits

"then the camera spins.... Changing the mouse position... " <-- this lost me. If the mouse isn't tied to the world pos, this shouldn't happen.

Vɪʜᴀɴ

4:03 AM

So this is why you don't use innerHTML vihanserver.tk/p/TeaScript/…

quartata

Cant you just store the last mouse position take the change from the current one scale it down appropriately apply the pitch yaw rotation to the player and parent the camera to the player

Alien G

@Geobits Sorry, it changes the world position relative to the mouse...

Hold up guys, let me draw XD

quartata

parent is what they call it in source dunno what it is in unity

Dennis

For some reason, every time I read the title of this challenge, I mentally append displaying the World's smallest violin to it.

3

Geobits

^ and now I will, too. Thanks :)

quartata

4:05 AM

Unity should be doing this work for you. just sayin

Geobits

Seriously. I'd think basic camera rotation with the mouse would be built into a 3D game engine.

quartata

cough cough try ue4

Alien G

@Geobits It's a lot more complicated then basic... (Want the ~65 lines for camera position/rotating? XD)

Geobits

Not really, no.

Alien G

Then shh

:P

Geobits

4:07 AM

Ok, shushing now. Good luck!

Alex A.

@Dennis I do too!! I'm glad I'm not the only one.

quartata

I hate ue4 and I still think it is the best engine out there

Alien G

gyazo.com/69fd69908bb60efc6e6f392cc1258306

The best drawing ever.

The player with rotate Θ if the mouse position changes...

El'endia Starman

Law of Cosines!

Alien G

@El'endiaStarman Yeah. Just the pastebin of the code earlier is flawed somehow...

quartata

4:14 AM

Here is how it works. Store the last mouse position in a var. Subtract the y and x coords of the current pos from the previous. Divide each by sensitivity. Apply x result as yaw y result as pitch

Alien G

@quartata Will try, thanks.

El'endia Starman

Law of Cosines also wouldn't give the signed angle difference, so never mind that. :P

quartata

Parent camera to player or however that works in Unity

Alien G

Oh no, quaternions.

Alex A.

Oh god, they're everywhere

Geobits

4:15 AM

~~Oh no~~ Yay, quaternions.

Alien G

@quartata I'm using exponential decay to make it look good :3 but I guess for this it will have to wait.

El'endia Starman

I didn't actually understand quaternions until I learned group theory.

Geobits

Oh sorry. Back to shush mode.

Alex A.

haha

quartata

Whatever makes the rotation of one object affect the other

Alien G

4:16 AM

@El'endiaStarman I barely understand them XD

Alex A.

@El'endiaStarman I understood everything better before I learned group theory. It corrupted my mind.

El'endia Starman

@AlienG What was/is your last/current math class?

Geobits

I didn't understand them until I was prototyping a space-fighter. Gimbal lock is a bitch.

Alien G

@El'endiaStarman Not high enough.

El'endia Starman

@AlienG That's...kinda irrelevant to me. :P

Alien G

4:18 AM

@El'endiaStarman I just google everything :D

Alex A.

@GamrCorps I thought you went to bed. :P

GamrCorps

Alien woke me up yelling at me to help fix his problem

Alien G

@AlexA. I messaged him on skype and he called me instantly... O_o

Alex A.

haha

quartata

I have been obsessed with group theory since forever

Geobits

4:19 AM

He says you have bad math :P

Alex A.

@AlienG I assume you two know each other IRL then?

Alien G

@GamrCorps Oh, the problem you created?

GamrCorps

@AlexA. yes

Alien G

@AlexA. We live in different states but yes.

Geobits

@AlienG This is a good way to stop getting help ;)

Alex A.

4:19 AM

^

GamrCorps

^

Alien G

@Geobits I don't want help if it's flawed.

Geobits

^ an even better way

GamrCorps

@Geobits I went over the math several times and that was the solution every time....

Alien G

@AlexA. Yeah, that.

For the record, I never saw the math.

Alex A.

4:21 AM

@GamrCorps You should just go back to bed. ;)

Alien G

He is usually right so you know, if it doesn't work blame him.

GamrCorps

@AlexA. Good Idea, night everyone!

Alex A.

haha

Goodnight

quartata

Also just want to say my biggest pet peeve in third person games is when the camera clips oob

If unity has a way to check that do it

Geobits

It's pretty jarring when it goes ultra-zoom-mode to avoid that as you're rotating, too.

quartata

4:24 AM

Or the camera could just stop.

Geobits

Yea, both have their drawbacks. Like you said, either is better than clipping :)

Alien G

I'm not worried by clipping ;_;

Geobits

Nothing like rotating it upward and getting a face full of character crotch.

quartata

Camera control is one of the trickiest parts of third person games.

Alien G

Oh yeah, if you guys ever use a 3D engine use exponential decay for everything.

You will thank me later.

It just makes everything so smooth ;D

quartata

4:28 AM

I forgot to mention spline interpolating the rotation

Hmm

Alien G

I think right now is a good time to drop-kick my pc.

quartata

So instead take your two mouse pos and make a spline between them. Then do the thingy for each point

Most specific instructions ever

El'endia Starman

But not detection is knot easy!

quartata

Pick an x interval like every 0.5 x or somethin idk

Alien G

@El'endiaStarman that's so bad.

El'endia Starman

4:31 AM

I was waiting for someone to say that. :P

Geobits

That's knot as bad as most puns in here. A bit square, but...

Alien G

@El'endiaStarman I was being baited all along?!?? ;_;

quartata

I am sleepy

Geobits

@AlienG He's a master at that. (she? I dunno)

quartata

night zz

Alien G

4:32 AM

My strong points are manipulation... Guess how I get @GamrCorps to do my work for me...

quartata

i will dream of bendy rulers tonight because of this

zzzzz

El'endia Starman

@Geobits He. :)

Alien G

@quartata No, dream of Alien babies.

El'endia Starman

The -a ending does often confuse people...

Geobits

@AlienG By pestering until it's easier to give up? That seems to be the tactic so far.

Alex A.

4:33 AM

@El'endiaStarman It's not your actual name though, right?

El'endia Starman

@AlexA. Nope.

Alien G

Best part is I could be either or neither...

El'endia Starman

It was constructed from my real name though.

Geobits

@El'endiaStarman Yea, the -a with Starman had me wondering :)

El'endia Starman

haha, yeah

Alien G

4:34 AM

@Geobits I've been fixing the camera for months now... (Not really giving up)

Alex A.

@El'endiaStarman I know your name because I saw your OEIS submission. ;)

El'endia Starman

Yeah, it's not exactly hidden. :)

Geobits

@AlienG It sounds like you've been working on it for that long, not fixing it ;)

El'endia Starman

bahaha ^

Alien G

@Geobits No, both, because designers can't make up their mind ;_;

Alex A.

4:35 AM

Are you a professional game developer?

Alien G

No, not even close.

Alex A.

Student game?

Alien G

No.

Personal project with friends.

Alex A.

Ah, okay.

Alien G

Just in my free time.

I finally found a team that wants to do something with their lives...

Unlike cough @GamrCorps cough

Alex A.

4:37 AM

ಠ_ಠ

Alien G

Yeah, he doesn't want to join in. The game concept is a good one too.

Alex A.

Little alien babies?

Alien G

We have a working prototype - a non-trippy camera..

Geobits

Game concepts are almost always good. The finished game is a different story most of the time :(

Alien G

@AlexA. I KNEW I WAS MISSING SOMETHIN!

Alex A.

4:38 AM

You need at least 30% more little alien babies.

Alien G

@Geobits I'm not expecting it to work but the progress so far is promising.

@AlexA. 30% more of 0 is 0... So I need none? .-.

Now that's the idea.

at least none.

And max..?

Can anyone log in here the default way by clicking the login button? It's only working for me when I press enter.

(log out first to try)

quartata

4:41 AM

@AlienG did my thingy work

Alien G

@quartata I have no idea what your thingy meant :/

quartata

@Calvin'sHobbies noticed that earlier

Alien G

I copied all the messages for review later.

Though right now I have bigger problems...

quartata

My thingy was trigless

Alien G

@quartata But trig makes it simple ;_;

Alex A.

4:43 AM

@Calvin'sHobbies Didn't work either way for me earlier. I logged into chat, which logged me into SE, then I could get back to PPCG.

quartata

But no trig makes it simple and fast ;_;

Alex A.

;_;

Alien G

@quartata Simple? ;_; Beg to differ.

Maybe for you... :/

Calvin's Hobbies

@AlienG Chat has transcripts btw

@AlexA. mod fix pls?

Geobits

@Calvin'sHobbies And this is why I don't ever log out of SE. Turns out I have no idea what my password was, just reset it.

Alien G

4:45 AM

Yeah but then I have to shift through many messages and etc, they've been copied already.

@Geobits Rekt.

Alex A.

@Calvin'sHobbies I would if I could.

Geobits

@AlienG Says the guy with the non-working camera.

quartata

pitch+=(new.y-old.y)/sensitivity yaw+=(new.x-old.x)/sensitivity

Alex A.

haha

Calvin's Hobbies

@Geobits But I need it for chat relay, which I don't keep logged in :/

quartata

4:46 AM

;_;

Alex A.

;_;

Alien G

@Geobits I feel like you dislike me in some way? Did I push a wrong button?

;_ ;

Alex A.

He's showing his affection by bullying you.

Calvin's Hobbies

geobits-dislikes-everybody

Alex A.

geobits-loves-everyone

contradictory-information

Calvin's Hobbies

4:47 AM

alex-is-wrong

Alex A.

Like having a code golf popcon

Alien G

@quartata I got how to get the pitch and yaw I just don't know how to tell unity to use them (Why'd you go and do it for me?)

Alex A.

@Calvin'sHobbies calvin-has-hobbies

Alien G

@AlexA. I have no idea how that could possibly make sense, ever.

Geobits

@AlienG Pretty much, yea. You have a very strange way of going about asking for help.

Alien G

4:48 AM

@Geobits I'm known for being manipulative, yes.

Alex A.

:/

Geobits

Manipulative wasn't the word I was thinking of.

quartata

You cant just say set pitch and yaw to this and that

Alien G

Antisocial pessimistic? I'm known for that too

:3

quartata

What a plebian engine

Alex A.

4:50 AM

ScrubEngine 3D

Alien G

@quartata I don't know if it works that way, I never work with pitch and yaw..

quartata

Whatever i said I was going to sleep what am I doing

Alien G

So much hate towards me, ouch.

@quartata Not sleeping.

Alex A.

@quartata Inconsistently capitalizing "I" in your sentence is what you're doing.

Geobits

That's a sentence? :P

quartata

4:51 AM

@AlienG maybe unity calls them something else. pitch is x rotation yaw is y

oh other way around

Alex A.

@Geobits It's uh sentence

Alien G

@quartata I know how to rotate around an axis :P

Calvin's Hobbies

> Whatever, I said I was going to sleep. What am I doing?

Alex A.

@Calvin'sHobbies Incorrectly quoting quartatoes.

Alien G

Hey, I never told any of you I was a pro coder, don't judge me so hard :P

Geobits

4:52 AM

@Calvin'sHobbies That's pretty much how I parsed it, too.

quartata

pitch y yaw x sleep good grammar non existant while sleepy good night

not judging @AlienG just sleep now need

Alex A.

Y, pitch a good sleep grammar, yaw'l.

Alien G

@quartata Night, remember Alien Babies, they're coming for you.

Calvin's Hobbies

@quartata have a yawn and roll into bed

Alex A.

lal

quartata

4:53 AM

nice joke thing

Alien G

Never again.

quartata

roll is zzzzzzzzzzzzzzzzzzzzzz

Alien G

Go to sleep you freaking insomniac.

Geze.

Alex A.

Gezel?

Alien G

Geese.

Alex A.

4:55 AM

Gazelle?

Calvin's Hobbies

@Geobits Will you ever join our server? (we still have your man cave)

Alien G

Geeselen?

@Calvin'sHobbies Am I also being invited :3?

Alex A.

@Calvin'sHobbies He had toyed with the idea of allowing his only son to join the merry brotherhood.

Geobits

@Calvin'sHobbies My what now? Honestly, you'll have better luck asking the kid. My minecraft phase has apparently died down for now.

Calvin's Hobbies

@AlienG Anyone can join. See ppcgmc.herokuapp.com

Alien G

4:56 AM

Great, time to figure out my password.

Better yet, no.

I'll do that later.

Geobits

@AlienG I don't really think you do, if that's what you think. I really don't care one way or the other at this point. People are amazingly easy to ignore online. Let me give you an example:

Alien G

@Geobits Ouch.

Eh, enough hate for one day. Night all.

(Releases Alien Babies)

Alex A.

5:39 AM

@Calvin'sHobbies You're so much less dictatorial than I would be if I had started the server. I would have required a PPCG account with a certain amount of rep. :P

30

Q: RFC: Better chat @mentions – A prototype

Status: 75% - We have a prototype to play with the UI Previous RFC: RFC: Better chat @mentions Problem Statement & Background Please see the previous RFC. Proposed solution The feedback to the solution I proposed in the original RFC was overwhelmingly positive. We now have a prototype of the...

This is neat but it means we can't ping people with partial usernames, e.g. @Cal.

Vɪʜᴀɴ

6:10 AM

http://vihanserver.tk/p/TeaScript/index2.html
I finished the TeaScript interpreter design, now all that's left is actual code :D

Beta Decay

7:03 AM

If that doesn't fix it, git.txt contains the phone number of a friend of mine who understands git. Just wait through a few minutes of 'It's really pretty simple, just think of branches as...' and eventually you'll learn the commands that will fix everything.

6

El'endia Starman

@BetaDecay bahaha

aditsu

7:20 AM

@BetaDecay I was just going to post that, it's so delicious! :)

couldn't agree more

Beta Decay

7:32 AM

:D

VoteToClose

1

A: A "cheating" quine

osascript (AppleScript from the command line), 40 33 bytes Working on fixing this. Got to go to sleep, though. (read path to me)'s paragraphs 1 Executing on a file called a with osascript a. Gets the first paragraph (line) of the file and prints it to STDOUT with a trailing newline, therefo...

Still pretty good. :P

El'endia Starman

@quartata - I went back to the Nether and the zombie pigmen were not still mad at me! (It probably helped that I logged in and out a couple times... :P)

Lembik

8:00 AM

@PeterTaylor Good point!

New Main Posts

0

Q: Carrots. So. Many. Carrots

The Inspiration The Task You must create a program, that, in as many languages as possible, replaces every instance of ^ with a markdown formatted link (meaning that if I was to post it in an answer, it would automatically read it as an image and place the image instead of the words) of thi...

string polyglot

Lembik

hi @ThomasKwa

VoteToClose

8:26 AM

61

Q: Can I add a baby as a co-author of a scientific paper?

Can I put the name of my baby as one of the co-authors of a scientific paper? I know it sounds disturbing, but it's a way of mine to protest against co-authors that haven't made any contribution (they haven't even read it or are part of the research area) to a paper, but they are part of the res...

publications authorship

ಠ_ಠ In what way is this popular?

Martin Büttner

8:41 AM

Looks like someone likes diamond tilings...

2

VoteToClose

shiiiiny

Lembik

@MartinBüttner hi.. good morning (?)

Martin Büttner

yes, morning ;)

Lembik

I just wanted to say again how much I love your code snippet

VoteToClose

>.>

Lembik

8:48 AM

hmm... I am making a list of top twenty languages for which there is no current answer for my challenge

Martin Büttner

@Lembik Thanks :) Some credits go to Optimizer as well who wrote the original prototype for querying the SE API

Lembik

PHP.... is it possible to make a solution in PHP? I have never used the language

El'endia Starman

@MartinBüttner Huh. Two days old. I wonder why... :P

Lembik

@MartinBüttner well it is awesome. Do any other .se sites use code snippets? Or is it just us

El'endia Starman

@Lembik The way we use them for leaderboards might be.

But they were initially added to Stack Overflow to help with demonstrating HTML/CSS/JS answers.

Lembik

8:51 AM

interesting thanks

ok.. after PHP, I assume PL/SQL, OpenEdge ABL make no sense either?

this is the list
C, C++, C#, Python, PHP, Visual Basic .NET, Perl, Delphi/Object Pascal, Assembly, Objective-C, Swift, Pascal, Matlab/Octave, PL/SQL, OpenEdge ABL, R

VoteToClose

@MartinBüttner Would number of languages - number of comment blocks be a good way to do that tiebreaker?

And then the one with the most votes, in case of a tie there?

Oh. Never mind. :D

Martin Büttner

@VoteToClose I'm not sure "number of comment blocks" makes sense, especially as there are other ways to get rid of code.

Also, I wouldn't add votes as a tie-breaker. After code size, the default tie breaker (earliest to reach the tied score) seems best to me.

VoteToClose

Yeah - I misread your comment, I edited it to your suggestion. Thanks!

Lembik

does anyone know how to tell what color the background is in upload.wikimedia.org/wikipedia/commons/f/f3/… ?

I mean the rgb values for it

Martin Büttner

@Lembik there are colour picker browser plugins

@Lembik do you mean the white?

or the blue?

El'endia Starman

8:59 AM

The white is transparent.

Lembik

ah.. the border is transparent?

I can't tell that

VoteToClose

0, 0, 255

For the blue thing.

El'endia Starman

The blue is a perfect blue.

Lembik

thanks.. this is for my new challenge

El'endia Starman

Likewise, the yellow is a perfect yellow (255,255,0).

Martin Büttner

8:59 AM

the boundary is 0, 0, 128

Lembik

I want people to move the sprite around the screen

but it will look odd on a white background

Martin Büttner

@Lembik which you'll sandbox, right? ;)

Lembik

@MartinBüttner yes!!

VoteToClose

@El'endiaStarman I read it as (255, 255, 11) - Adobe RGB or Generic RGB?

El'endia Starman

@VoteToClose Well, actually, eyeballing.

I just opened up Chrome's element inspector and changed the background color of the page to yellow...

Just copy-pasted into MS Paint and it's (255,255,0).

Lembik

9:02 AM

oh!

too many answers :)

maybe I should choose a different alien :)

El'endia Starman

@MartinBüttner Confirmed.

Lembik

oh it is transparent!

VoteToClose

El'endia Starman

strange

VoteToClose

Thank god for builtins. :D

El'endia Starman

9:07 AM

VoteToClose

When I read it in Adobe RGB, it's 255, 255, 60

El'endia Starman

o.O

VoteToClose

sRGB - 255, 255, 1

native values - 255, 254, 56

El'endia Starman

...well, that's confusing.

VoteToClose

Note - just make it 255 255 0 in STANDARD RGB. @Lembik

Lembik

9:16 AM

how do you write tags again in the question? [graphical-output] is not quite it

and what do I put in a sandbox question so that it appears properly in the list at the top?

I mean in terms of title

Martin Büttner

[tag:graphical-output]

Lembik

thanks

Martin Büttner

What list at the top?

> (The Submission Directory has been removed. Go here if you have concerns about that.)

Lembik

aha :)

0

A: Sandbox for Proposed Challenges

Proto space invaders This is a graphical output challenge where the task is to give the shortest code per language. Task Your code should allow the user to move the following alien around the screen/window. The background should be white and the window/screen must be at least 200 pixels b...

sandbox'd!

Martin Büttner

@VoteToClose In case you're not aware, if you post something from the sandbox, in addition to editing it down to a link, please also delete the post.

VoteToClose

9:20 AM

Oh, okay.

New Sandboxed Posts

0

A: Sandbox for Proposed Challenges

Proto space invaders This is a graphical output challenge where the task is to give the shortest code per language. Task Your code should allow the user to move the following alien around the screen/window. The background should be white and the window/screen must be at least 200 pixels b...

VoteToClose

@Lembik The Sandbox will automatically post things. ;P

(about 17 minutes after you post it)

Lembik

@VoteToClose aha :)

any views on my sandboxed challenge?

New Main Posts

9:41 AM

0

Q: Fix the Meeesesessessesseesseessedessed upp teeexexextext

This is inspired by Monday Mini-Golf #6: Meeesesessess upp teeexexextext Background ETHproductions have difficulty from entering text to his usual webpage. Everytime, the text will be meeesesessessesseesseessedessed. Your task is to help him to type so the normal behavior is achieved. The tran...

code-golf

El'endia Starman

Aww, Lindenmayer Systems have already been done...

And it's a good challenge too so I'm not touching it. :P

Lembik

posting to the sandbox is much less satisfying than not posting to the sandbox :)

El'endia Starman

On a different topic, I think I've figured out a good way to have fastest-code challenges. The idea is that instead of competing on absolute speed, which varies between languages (C/assembly/lower would always be the fastest) and also between machines, competition is done on relative speed compared with a far simpler task, such as 10,000 multiplications.

So users would have to time both the simple code and their solution, and the ratio between these times is what's scored.

Hence, the focus is put on having the fastest algorithm.

feersum

Not necessarily.

It could be focused on finding the language where the metric is most inaccurate for the given task.

Lembik

@El'endiaStarman it's a nice idea but fraught with difficulties

@El'endiaStarman I have thought about this issue a lot and have no great solutions.. But I do have lots of ideas

lower level languages tend to be more verbose

El'endia Starman

9:49 AM

@feersum Elaborate?

Lembik

so one can combine length and speed

time + code length... but really you want f(time)+g(code length) where f and g are carefully chosen functions

El'endia Starman

I don't care much about code length here.

Lembik

@El'endiaStarman sure.. it's just a way to penalise lower level languages

without having to some make a metric for how low level a language is

which seems essentially impossible

but it does cause problems you are right

feersum

@El'endiaStarman For example, maybe multiplying is 1000 times slower in Python than C, but adding is only 300 times slower.

El'endia Starman

@feersum Their relative ratios ought to be the same, though? Hmm. That's not quite right. Perhaps it would better to say that the relative ordering would likely remain consistent.

Lembik

9:53 AM

you are close to using BogoMips :)

feersum

The relative ordering doesn't matter for the scoring you proposed, only the ratios.

El'endia Starman

But the simple task I'm thinking of is to do something like n = n*n % m where m is a prime, and do it for 10,000 iterations or so.

Lembik

BogoMips

BogoMips (from "bogus" and MIPS) is an unscientific measurement of CPU speed made by the Linux kernel when it boots to calibrate an internal busy-loop. An oft-quoted definition of the term is "the number of million times per second a processor can do absolutely nothing". BogoMips is a value that can be used to verify whether the processor in question is in the proper range of similar processors, i.e. BogoMips represents a processor's clock frequency as well as the potentially present CPU cache. It is not usable for performance comparison between different CPUs. == History == In 1993, Lars Wirzenius...

El'endia Starman

@feersum Yes, but in terms of choosing a winner, a consistent ordering ought to be enough, aye?

feersum

I don't see why an ordering is helpful at all.

El'endia Starman

9:55 AM

The winner would be the one with the lowest ratio.

feersum

As I said, that uses the ratios and not orderings.

Lembik

@El'endiaStarman do you have a particular challenge in mind?

El'endia Starman

@Lembik Yep. The continental divide.

(Haven't sandboxed it yet.)

Lembik

what's the coding challenge?

El'endia Starman

@Lembik Given a topological map, calculate where the divide is.

Lembik

9:58 AM

do you mean topographical?

El'endia Starman

Ha, yes. Topographical.

@feersum The point you raised earlier was that the choice of metric affects the ratios. I.e. Python is worse at multiplication than addition compared to C. However, that will only change the absolute ratios, not the relative ratios of the answers. That's what I'm thinking.

Lembik

is this properly defined as a problem?

El'endia Starman

eh?

Lembik

for example, if I give you a flat map

what is the answer?

feersum

@El'endiaStarman This doesn't make sense. Can you give an example?

Transcript for