Game Development

10:58 AM

@UriPopov What are the meaningful components here? Do you want to extract the date + username + ID + ip + session?

yep

hello i like regex

@UriPopov which elements do you need in the end?

and what lingo are u using to execute the regex?

Kevin van der Velden

@dot_Sp0T have fun with this then: regexcrossword.com =p

nah guys drop it I hacked togheter a solution that works. This is a one time type of deal it does not need to be doe right just work

Pfft. Here you go anyways.

Look at the "match information" in the center right and if that is what you wanted call it a success.

11:22 AM

@UriPopov ah c'mon, you can't let me hang like that

sorry was not at pc. This seems to be able to do the job yes

@nwp you should use \s instead of ' '

techniclly username should be in its own group and the entire timestamp should be one

How stable is the text? Can you just hardcode "Successful login" or should it also work for "Login failed"?

user92578

@nwp wow, cool

11:29 AM

I filter out all the Successful logins when reading the lines

so the regex will only work with Successful logins

That is almost readable. That probably means I'm doing regex wrong.

@dot_Sp0T Not sure. Probably. Guess it depends on the log.

User names can have spaces right? It's not gonna work for those.

Never mind, it does.

@nwp could be either U+0020 or U+00A0

@nwp nice thanks

@dot_Sp0T Good enough? I never ran into that problem. Mostly because I never really used regexes for anything :P

@nwp :) I'm currently going over it

How about this? - I'm not really happy yet, because there should be a set of defined characters for the user-name and the timestamp should probably also be defined. but yeah

11:48 AM

Doesn't match user name correctly. And probably matches failed logins which is not the goal.

@nwp I understood it to be only applied to sucessful logins

also yeah, I missed the username having a space

@dot_Sp0T Yes. But you don't check if the string is "Successful login". If it is "Login failed" you will still match it.

@nwp Again, I understood it such that the regex will only be applied to sucessful logins. So why would I check for that again?

you would not

I understood that it is to search for successful logins in a long log.

11:54 AM

@nwp in that case it makes sense to check for it

no I only get lines that have successful in them and then I need to apply to regex to explode the line and insert the needed data into a DB

Cool. Is there some IPv6 in there? Currently the IP group doesn't match 2001:0db8:0000:0000:0000:ff00:0042:8329.

this one does user-names with spaces and that one only allows success in life

I'll update with some better ip checking once I'm out of the classroom

I dont think there are IPv6 in there but then again the log file is about 500k entries so I dont really know :D

Only allows success in life? Ouch.

user92578

12:02 PM

result[VertexAttribute::POSITION].push_back(vertex.Position.x);
result[VertexAttribute::POSITION].push_back(vertex.Position.y);
result[VertexAttribute::POSITION].push_back(vertex.Position.z);

user92578

What would be a clean way to push multiple values into a vector at once?

user92578

I found that insert might work with an in-place array { vertex.Position.x, vertex.Position.y, vertex.Position.z } but that also requires the end iterator of the vector which would require me to save the vector that's fetched from the map to a local variable

I don't think there is an elegant way.

auto &v = result[VertexAttribute::POSITION]; v.insert(std::end(v), { vertex.Position.x, vertex.Position.y, vertex.Position.z });

is probably as good as it gets.

user92578

aight, thanks

user92578

It'd be cool if push_back was essentially a short hand for insert(std:end(this), parameter);

12:08 PM

If it really bothers you you can write a function for it and then use append(result[VertexAttribute::POSITION], { vertex.Position.x, vertex.Position.y, vertex.Position.z });.

I mean you could write a helper/wrapper for this if you do it often

user92578

Yeah. I guess since this happens in a loop it's cleaner/maybe even faster to just fetch the vectors inside the map outside of the loop and then just do the insert stuff inside the loop

user92578

std::map<VertexAttribute, std::vector<float>> COpenGLVertexArray::SeparateVertexData(const std::vector<SVertex>& vertices)
{
	std::map<VertexAttribute, std::vector<float>> vertexData;

	std::vector<float>& positions = vertexData[VertexAttribute::POSITION];
	std::vector<float>& textureCoordinates = vertexData[VertexAttribute::TEXTURE_COORDINATE];
	std::vector<float>& colors = vertexData[VertexAttribute::COLOR];

	for (const SVertex& vertex : vertices)
	{
		positions.insert(std::end(positions), { vertex.Position.x, vertex.Position.y, vertex.Position.z });

user92578

yeah... my stuff is terrible for a whole bunch of other reasons than STL :D

12:59 PM

STL is a cpp lib isnnit?

1:12 PM

The standard library.

There are some people out there who say you must never ever use any standard thing in gamedev because then it is not specific to the game and can by definition not be up to the requirements of the game.

I strongly disagree with that.

1:37 PM

that sounds absurd

do they avoid using int?

user92578

totally when a char would do :D

[deflates]

@doppelgreener No, but I heard them recommending implementing bubblesort instead of using std::sort because with your own bubblesort you understand what you are doing and can optimize while std::sort is a blackbox.

@nwp that gives me a sad

i'd use std::sort until such time i can identify it as a performance bottleneck

what they're doing there is recommending premature optimization, possibly without any actual optimization performed, instead of actually doing game work

@doppelgreener That is the conventional wisdom. You have just disqualified yourself from being part of the handmade movement and have to suffer being productive.

1:48 PM

@nwp oh no........

user92578

handmade movement?

user92578

as in the handmade hero stuff?

Yes.

It has spread to quite a few more people but I believe he is the origin of that ... idea.

user92578

I don't even understand writing code that looks that much like C

user92578

How does sprite batching conventionally handle scale / rotation?

user92578

1:52 PM

Do I calculate those into the vertices I add to the batch or are those attributes for the vertices?

Alexandre Vaillancourt

2:20 PM

morning chat!

user92578

heyy

2:37 PM

Good morning!

hey

I made an object which basically is behind my player like 20cm away or so. It keeps running forward and once it touches the objects or collide, it destroy them and I will make it invisible, though player still can't see the object since it's behind the player. But is it a efficient way to destroy objects?

And it is working like that

user92578

Sounds pretty clever.

user92578

Efficiency is something that you need to profile.

Haha. But when I change my player position back to 0, I am not sure those objects will be there or not haha.

Yeah

But I don't understand profile stuff. It's hard to understand

user92578

Yeah those won't be there if you destroy objects, obviously.

2:42 PM

When your player teleports to 0, you may necessarily have some cleanup or setup work to do.

Then I will have to figure another way to keep my scene running forever

user92578

I'm not really convinced that deleting static objects behind the player will help at all TBH

Yeah when it reaches to 0, I can probably add objects back or something

But deleting objects which help make it effiecient

efficient*

user92578

Since Unity does frustrum culling, I don't see what kind of load on anything the objects that aren't rendered would cause?

user92578

You can edit messages by pressing the up arrow.

2:43 PM

Sure, but it don't delete the objects which are rendered. So once it rendered a lot of things then it'll cause performance issues

user92578

Have you tried enabling & disabling the renderer instead of destroying the object?

I am using culling. How would enabling and disabling help?

Like disable them once the camera can't see it?

user92578

How would destroying help?

There won't be lots of objects, so it'll help with the performance, but if there is a lot of objects then it might lag

user92578

Well destroying objects that are culled is mostly just making the culling faster.

user92578

2:46 PM

So my idea with disabling the renderer would be to remove the object from the culling list, achieving the same result.

My game run very smooth but after few seconds or a minute it starts lagging and it's probably bc it has so many objects

Anyone worked with STB truetype?

user92578

But since the object isn't destroyed, it could be made visible again once the player needs to see the object again.

Culling faster? Do you mean increase the speed?

user92578

@Hemlata Probably isn't something that I like to hear here.

2:47 PM

Um yeah

user92578

Yes often times "faster" means an increase in speed.

But how does disabling would help? bc objects are just disabled, but still consuming resources since we didn't destroy them.

user92578

2 mins ago, by Tyyppi_77

So my idea with disabling the renderer would be to remove the object from the culling list, achieving the same result.

How do you do that?

I don't know how to disable.

user92578

It won't obviously help with RAM, but using lots of RAM doesn't slow the game down.

2:50 PM

Yeah.

user92578

Did you try to Google that?

Nah

But I will

user92578

I can share you a helpful LMGTFY link if you want to, but I'd rather have you google it yourself

LMGTFY?

Yeah I will google it

user92578

Let Me Google That For You

2:51 PM

Nah haha. I can google it by myself.

user92578

It's a pretty rude tool that's used when someone asks a question that google would provide an easy answer to

Yeah, but I didn't thought about it and I don't ask anyone to google it for me. haha

But does it help with any performance? Bc I am doing that to just make my game efficient otherwise I don't need to delete it

Honestly the profiling thing that people keep mentioning is how you find that out.

Nobody can tell you how much it helps with performance unless you -- you, personally, yourself -- profile it.

Yeah, but it's hard to understand profiling

Well, you need to.

2:54 PM

Yeah

You are asking these people questions they cannot answer for you because you must understand profiling and answer them yourself.

If I share the screenshot of my profiling can you just tell me what it is causing the performance not that good? I mean if it's in my script or gameObjects then I can try to fix it

I'm not using that "must" lightly. You're putting in effort to obtain performance, speed, efficiency, etc -- all of that is worth nothing if you do not profile. If you do not profile, you do not know what the speed, performance, efficiency, and so on are, you cannot understand what is actually making things slow, and you cannot measure what various changes do to improve (or worsen) performance.

@Hemlata No. You must profile it yourself and learn how to operate those tools for yourself.

Um yeah

But I really can't understand any word in it

Well, google and learn about it.

2:57 PM

Um ok.

Thanks

There is a saying: we can give someone a fish, and he will be full for a day. But if we teach them to fish for themselves, they will be full for a lifetime.

Um yeah I know, but I do try to understand it. But it's hard, though I will figure it out.

If you show us a profiling screenshot, we may be able to identify something in it. But usually profiling is complex enough that anything that's in a single screenshot is inadequate for actually figuring out what's going on -- there's data to explore which won't fit in a single screenshot. Further, we'd only be helping you in that one instance (giving you a fish).

Yeah

Yes, profiling is actually complex and takes some time to figure out. But you really, really, really do need to figure out how to use it for yourself. Because this is the kind of thing where you need to figure out how to fish.

3:00 PM

is it different for phone and laptop?

user92578

Different devices have different performance bottlenecks

Performance or profiling?

I mean it works pretty good on laptop but on phone it lags

@Tyyppi_77 Yeah

Both

3:00 PM

@Hemlata That's normal. Phones are usually slower.

So you must investigate to find out what's making it lag on your phone, and address that.

user92578

If I build a PC with a great CPU and a lousy GPU, the GPU will be the bottleneck there

Yeah but I don't want it to lag on phone

user92578

If I build a PC with a lousy CPU and a great GPU, the CPU will be the bottleneck there

how do you profile on phone?

@Hemlata Google that for your development tools.

user92578

3:02 PM

docs.unity3d.com/540/Documentation/Manual/Profiler.html

"how do i profile on my phone in unity" etc

user92578

yup

I have did. On phone there is an option in the developer but it only show like just 3 numbers

Like something 12.5/30/22

that's all it show on phone

user92578

"show on phone"?

user92578

does that mean that those numbers are displayed on the phone screen?

3:03 PM

Yes

user92578

or that those numbers are everything you see in the Unity profiler?

No, not on unity profiler. On phone it shows those 3 numbers in the upper left of the screen while game is playing

Unity profiler is the one I showed

In the picture

user92578

Those results in the profiler don't really seem to indicate any kind of lag, those are pretty great results on a phone IMO

No, those results are of my game when I run on laptop

I will show the profiler result of phone as well. It's charging right now, so I will show in a bit

user92578

Well you don't really need to show those

user92578

3:12 PM

You just need to interpret those yourself.

But it's hard to understand. It just show 3 numbers like 12.5/20/30 in the top left of the screen

user92578

Those aren't the numbers you're interested in.

user92578

Does Unity not give you a similar view inside the editor when profiling on phone as when profiling on PC?

No, profiler doesn't work in my laptop if I connect my phone in my laptop and run the game.

It only works when my game is running on laptop

user92578

And is that just something Unity doesn't support or have you not set something correctly up?

3:15 PM

I am not sure about it. But I will look it up.

I think it'll work. I probably have to turn off wifi in the phone. Or something else. But I will look up more and show you the profiler in half an hour if it worked.

I am hungry haha, so I'm gonna have dinner and then try to figure it out haha

@Tyyppi_77 unity does support profiling on device

@Hemlata you gotta work on your google skills man.

"unity profile on ios device" turns up how to do it for ios

3:33 PM

If there is a programming thing you want to do in a tool/language, google the tool/language and the thing. Programming as a profession is driven by google.

Kingdoms and Castles is fun

played another hour last night when I couldn't sleep

@Almo Women*

Yeah I will

I don't have IOS phone I have android

come on man

just google "unity profile on android device"

seriously, if you can't generalize this, you'll have a really hard time developing games.

Is it like saying "come on man" haha. Bc no one calls a girl man haha

twitch.tv/almo2001

streaming opus magnum

3:42 PM

Nah developing games isn't hard but making them effecient is

Efficient *

user92578

developing games is damn hard

11

morning

Yeah probably

But I think it's more difficult to make it efficient

that's part of developing games

Today I learned that if someone set the userID field in the DB to long you cant cast it to int in your code :D

top kek

user92578

3:51 PM

I'm working on a sprite batcher and in addition to nothing getting rendered my performance is awful lol

user92578

It's nicely constructing one massive batch

how many sprites did you have on the screen before you decided you needed the batcher?

user92578

apparently enough

yolo

user92578

well a separate draw call for each sprite wasn't really effecient anymore

user92578

3:55 PM

but I wasn't drawing even a ton of stuff

user92578

ahhhh I wasn't clearing the batches between frames

user92578

Got like 170k vertices from 40 sprites

hmmm OpenGL?

user92578

yup

user92578

so now performance is cool but nothing is rendered :D

user92578

3:59 PM

gotta start up some debugging

developing games is easy in the sense that building a bicycle is easy. The hard parts are just making it move, comfortable to sit in, something you can steer, making it not fall apart the moment it reaches the road, making it able to go over bumps, making sure you can actually pedal it, maintain speed, brake, and otherwise ensuring people can actually use it to get anywhere alive and want to and be able to use it a second time.

@doppelgreener but can you phrase it as a car analogy

@Jimmy no, the car just crashed into the bicycle's rider and is being impounded.

(sorry)

(to the bicycle rider)

so the analogy is "driving a car is easy, it's avoiding the cyclists and pedestrians that's tricky"

nice

also the other cars, the street poles, the road boundaries, all the buildings, the curb, the lane boundaries...

4:08 PM

Anyone tried rendering box-drawing characters with STBTrueType?

Hi, I want to know what is the GUI framework that the Godot game engine used?

Is anyone know about that

@Tyyppi_77 anyway, I was curious about the numbers ,because a while back I thought of building a OOP-ish SpriteBatch implementation that allowed for moving, creating, and deleting sprites by appropriate use of BufferSubData but I was never sure if that was actually a good idea versus just a "buffer a bunch of drawSprite calls" type of API.

user92578

I found a bunch of drawSprite calls pretty slow

user92578

I could've probably done some more extensive profiling to see what was the issue

user92578

@DININDU Godot is open source, why not go and look yourself?

4:13 PM

@Tyyppi_77 yeah i just opened the code also. Im really new to c++, this is bit difficult to me

find the how they write the gui :(

user92578

looks like custom gui to me

I just realized something, which is those all ui components based on control.cpp :|

user92578

custom gui code get's messy really fast

user4704

@DININDU That's not an uncommon design.

user4704

Everything in Win32 is a "window," including buttons, labels, et cetera.

4:20 PM

I wonder if it's worth editing my old answers that linked to a jsfiddle by replacing with inline js snippet

@JoshPetrie wait wat?

oh, is that why everything has an HWND?

@JoshPetrie Really... so is it customized as they needed?

That default windows gui components

user92578

nonono

> In addition to frame windows, several other major categories of windows are derived from CWnd:
> * Views
> * Dialog Boxes
> * Forms
> * Controls
> * Control Bars

msdn.microsoft.com/en-us/library/f3a0a96e.aspx

user92578

4:26 PM

They don't use Win32, Josh was just pointing out that Win32 has a similar class hierarchy

has OOP gone too far?

user92578

just a badly named base class IMO

But godot is cross platform, how this gonna be possible in others

mac linux :(

#ifdef all the things!

user92578

It's custom UI

user92578

4:27 PM

It runs on all platforms

user92578

No extra code required

user92578

Forget the Win32 discussion, it wasn't an answer to your question

user4704

@dot_Sp0T HWND is used for basically everything in the classic Win32 API.

user4704

Every "control" in a classic Win32 application is a "window" as far as the API is concerned. All the same type.

user4704

@DININDU I don't know how Godot works, all I'm saying that if Godot works by deriving everythign from a common "Control" class defined in control.cpp, that's not unusual.

user4704

4:29 PM

That's how GUI frameworks are often built.

user4704

@Jimmy CWnd is from a Win32 wrapper.

user4704

And likely uses that inheritance tree because it's easy, because in the underlying Win32 API everything is a HWND, and it's only data that determines how a HWND for a top-level window and a HWND for a button in that window differ.

@JoshPetrie every button rendered?

Or do you rather mean every singular control?

user4704

Every single control.

that is very interesting

user4704

4:31 PM

Every label. Every button, every text box, every scroll bar, every list box.

user4704

All HWNDs. Some with child HWNDs.

very scaryinteresting

user4704

@DININDU If they're deriving everything from Control, Control will just be implemented using Win32 on Windows, Cocoa stuff on macOS, et cetera.

user4704

"Control" is likely their abstraction over the native windowing system. It's their cross-platform layer.

Now I'm fighting to get my fontrenderer to render box-drawing-characters AND I am scared by win32

user4704

4:33 PM

It's not a particular scary design, really.

In this control.cpp file i can see only one global include

user4704

It's compact and efficient.

which is #include <stdio.h>

user4704

@DININDU Why don't you link the file you're looking at from the GitHub repository. Then we can talk without speculation.

user92578

github.com/godotengine/godot/blob/master/scene/gui/control.cpp

user4704

4:34 PM

Thanks.

user4704

There's a ton of #includes in here.

Yeah that one

user4704

But you're right, no windows includes, et cetera. So this Control is not actually the platform abstraction part of the GUI.

user4704

It's just a base class for controls that doesn't itself deal with OS stuff. That's elsewhere.

user4704

Possibly in os/os.h

4:36 PM

it doesn't look like it uses native widgets

user92578

yeah I'd guess it just goes to a renderer or something

user4704

Yeah, github.com/godotengine/godot/blob/master/core/os/os.h mostly rendering abstractions

user4704

(outside of the logging, etc, stuff)

it looks like, for example, button.cpp calls resources/StyleBox which just draws some kind of box to a texture

github.com/godotengine/godot/blob/master/scene/gui/panel.cpp in here is a panel also. but i cant see any drawing here

4:40 PM

probably because it's a base class for other controls

github.com/godotengine/godot/blob/…

there's some drawing code

As a web developer, looks like c++ based guis are totally terrible :D

user4704

All GUIs are terrible.

user4704

Except the ones that (a) are trivial (b) you already know really well.

lol

yeah but have you looked at the browser's code to render your <button>s

it's just hidden underneath a bunch of abstractions

4:43 PM

No, i only saw shadow roots only.

:D

thats all

user4704

This part of it isn't really "terrible," it's not very far from what your web-based thing will fundamentally present. All GUI elements -- buttons, etc, whatever -- share some common properties and functionality. Wrapping them up in one place is a good idea.

user4704

Whether that's via inheritance or composition or whatever is really an orthogonal issue. And as far as implementations go, Godot's approach of deferring to self-drawn stuff is probably better if you're not actually trying to mimic the look of native GUIs

user92578

lol I'm having some shader issues and accidentally created a pretty cool cool and shady color theme thingy:

user92578

user4704

Because it has fewer moving parts and less abstraction cruft.

4:45 PM

I think it's just C++ being verbose. This button drawing code seems to basically an immediate-mode "draw a box styled based on the current control state, and draw some text in the box"

actually, not even C++'s fault, yeah, there's just less abstractions. like, if you were trying to make the code pretty you'd probably stuff all the text metrics code in some utility function

Ohh that a big deal

user4704

It's also looking like the GUI treads water in the awkward phase between basic and full-featured.

user92578

^ I feel like that happens very easily too

user4704

It's not super trivial, so some of the drawing code is a bit verbose. But it's not supporting all the crazy OS-level stuff like IME and text marking, assistive features, etc

user4704

So there's only so much wrapping up that needs to be done.

5:02 PM

woot I'm finally caught up on adventofcode @PearsonArtPhoto :D

although getting on the high score list seems really hard

PearsonArtPhoto

6:37 PM

It is...

If I was going to do it, I would have to re-adjust my entire life...

I'm just not up at the time of day that they release the new day's item.

6:48 PM

@Tyyppi_77 time to have a blacklight neon laser fortress

DCON

7:23 PM

Anyone here good at matrices and/or openGL?

I'm struggling big time with getting my enemy object to face the player object :/

Just add "Bathesda" to your intro, charge 60$ and release as is.

DukeZhou

7:37 PM

@nwp lol

Seeking comments, advice: I'm refining my copy for the initial Mbrane posting on Board Game Geek. I'm going to avoid praising the game, as that is subjective, and try to focus entirely on game play. Let me know if you have any thoughts on my initial draft:

-----------------------------------------------------------------
QUALITIES OF MBRANE

Wholly original mechanics, unlike any previous game in its class.

Game of pure skill, with significantly less rules than chess and no special conditions.

Utilizes Sudoku as the context for a tile-based strategy game which introduces blocking factors (resource stealing strategies). Factorial nature of the gameboard provides effectively infinite replay, despite max 81 turns and 10 minute average game time

Designed in the spirit of medieval tile games, currently in abstract form--gameplay may be understoo…