Game Development

12:00 AM

I think implementation defined is supposed to be a hint (like: insert interesting platform detail here), where undefined is supposed to mean "nothing to see here"

Ali.S

personally, when I see something implementation defined, I assume if it worked the first time, it's going to work again. but if something is undefined, I don't make such an assumption. (or at least I hope I don't)

MickLH

I think I should write a C++ compiler where all the undefined behavior invokes an AI that takes a debug snapshot and code-monkeys your algorithm around until it works

...and injects malware, it would be standards compliant

Ali.S

AFAIK the main reason to leave so many undefined behaviors is to let compilers speed things up as much as they could

without worrying about violating the laws.

and it really makes sense

e.g. imagine it would be forced by the standard that all null-pointer accesses should throw exception. That would mean at least one extra "if" condition before every pointer access, which could have resulted in huge slow downs...

John McDonald

12:20 AM

@AidanMueller That's awesome

Did you draw that?

MickLH

12:31 AM

fuck... hey @Ali.S I was digging deeper and I'm afraid that they only fixed the C standard, but not the C++ standard

this guy seems to arrive at the same conclusion

stackoverflow.com/questions/11373203/…

Actually I had a different thought from that guy, I just finished reading his post lol

I see it as a violation of strict aliasing because you're interpreting a pointer to one type as another. He construes it as a compound type and says it's an uninitialized variable in that context.

I think they left it undefined in C++ because construction and destruction become a big problem otherwise.

SpicyWeenie

is LWJGL3 still in alpha or an official release?

Aidan Mueller

1:55 AM

Imagine if I won a million dollars. You know how many lottery tickets I could buy with a million dollars?

Almo

2:15 AM

enough so that your chances of winning would still be microscopic.

Aidan Mueller

lol

Aidan Mueller

2:54 AM

How does make know when a file has been modified?

SpicyWeenie

@AidanMueller try checking if the size of the file changes from a previous size

Aidan Mueller

What if the file is the same size?

SpicyWeenie

Then check the last time modified against the current time

Aidan Mueller

Where does it store this info?

SpicyWeenie

You can store the time and date

Aidan Mueller

3:03 AM

@SpicyWeenie I'm talking about make.

The program.

SpicyWeenie

Ok explain what you are trying to do in a nutshell

Aidan Mueller

I'm not trying to do anything. I'm just wondering how make. MAKE! The program that builds things with makefiles can tell when I file changes.

I can't see any cache files.

SpicyWeenie

Then I have no idea

But with in file, the second something changes, a flag goes up and if the user doesn't save it with the new modifications, nothing changes from the original file (generically)

Aidan Mueller

3:20 AM

@SpicyWeenie I think I just figured it out. Whenever it generates object files, the source file would be older than the object file. So if the source file is newer than the object file, then it needs to be rebuilt.

SpicyWeenie

pretty cool there

Kala J

Guys I have a question, not sure how to do this: stackoverflow.com/questions/30339498/…

SpicyWeenie

3:35 AM

@KalaJ so you want something for example to go from 0 directly to 90, 90-180, 180 to 270 and 270 to 0 skipping all degrees in between?

Kala J

4:17 AM

@SpicyWeenieSpicyWeenie, yes exactly!

How can I do that with my current code?

@SpicyWeenie *

SpicyWeenie

@KalaJ is this user controlled or automatic like a clock?

Well anyway, you need to let whatever is rotating move more or less out of the four degrees (90.01 for example). If number is larger than the degree, move to the next degree. if the number is smaller, move the next degree in that direction.

Kala J

This is user controlled

The user can drag line 1 or line 2

about their intersection point

and rotate the line about their intersection point

but right now i can displaying rotation for all angles

and not restricting or clamping any rotation

The user can rotate the lines 360 degrees about the intersection point

I want to restrict it to 90

SpicyWeenie

Look at my above pseudo solution

Kala J

ok

but I guess my main question is how do I restrict the rotation to x amount of degrees

see my code*

SpicyWeenie

I could understand it better if I see a picture

Kala J

4:28 AM

ok

If you rotate one of the solid lines

e.g. in this picture by 45 degrees, it snaps to 45 degrees

But I want 90 degree snaps

idk if that makes sense?

SpicyWeenie

And rotation is by mouse movement, right?

Then you first need to store the point where you clicked the mouse button. Then you need to check how far you dragged the mouse with the button held down. If the mouse moved a certain amount of distance positively or negatively,

then the line should rotate 90 degrees based on the movement. For continuous rotation while dragging, update the original mouse position to when the last rotation took place. You also will need a distance interval for the mouse (25pixels or more maybe) to keep your line from spinning like a helicopter

@KalaJ

Dev2rights

8:31 AM

Morning

user92578

8:49 AM

Good Day

Blue Bug

9:14 AM

@Chris Did you draw ur game urself?

user92578

I got saving settings from the menu working

user92578

Reading might be a bit more work tough

user92578

I mean initializing the gui elements to correct values on startup

Christoph

9:57 AM

morning

user92578

hey

Jon

yo

user92578

How should I do "updating" a specific setting

user92578

So let's say the CParticleManager cares about the "Particles" setting of the game

user92578

If it's low, it'll multiply all system amount calls by .5

user92578

10:01 AM

If it's medium, it'll multiply system particle amount calls by .75

user92578

And if at high, it'll do nothing

user92578

Who responsible for checking the current particle setting option?

user92578

Does the settings menu notify the particle manager

user92578

or does the particle manager check it every time or at a specific interval?

Jon

ah

you could call a refresh on the particle manager whenever the value changes

user92578

10:08 AM

That's a good idea

user92578

Maybe inherit from ICaresAboutSettings which has an abstract Refresh() method

Jon

that sounds pretty good

Pip

morning GDSE

user92578

10:37 AM

IBaseConfigurable is a better name tough

Jon

top video on reddit.

Asian girl telling white guy he is not allowed to have an opinion.

because he is white.

apparently this is news.

user92578

But wait

user92578

How does the menu know which instances to notify?

Jon

might be a good idea to use events

raiseevent and pass in an enum or something with it

or just raise a seperate event for each

user92578

Hmm I don't have an event system really

Jon

10:47 AM

its built into c#

user92578

yeah thats nice for the c# users

Jon

same with c++

you just create an event, raise it, and create a handler and handle it

i design my menus around events

user92578

My menus arent that well designed

user92578

But they're okay in hierachy and it works

user92578

so I don't really want to go around and redo a couple thousand lines of code

Jon

10:51 AM

yeah

Christoph

@Tyyppi_77 menus are a thing where events really shine

Jon

smart move :P

user92578

I'm mainly relying on a hierarchy and casting :D

user92578

So I need somesort of "singleton" or a global list of methods to call, right?

user92578

As I don't really care about the message, just the fact that something happened

user92578

10:55 AM

hmm

user92578

maybe the IBaseConfigurable could store a static std::map<std::string, std::vector<std::function<void()>>> m_EventCallbacks;

user92578

actually that doesn't have to be a map

user92578

just a std::vector<std::function<void()>> m_Callbacks

Blue Bug

hey internet look I drew this!

user92578

cool

Blue Bug

11:00 AM

thank you lol

user92578

Stupid question, but why does the floor look like that?

Blue Bug

OTL I haven't draw them yet lol

user92578

Ah

user92578

The walls look really good tough

Blue Bug

<3 @Tyyppi_77 I drew them for hours I am so happy thank you.

Dev2rights

11:03 AM

not so sound like an a hole as the walls are good, but id also suggest adding shadowing to the doors and adding some perspective to the lines separating the wooden planks

they look a bit out of perspective at the minute

Blue Bug

0) more perspective to the walls
1) add shadow to the doors

thank you for the feedback, I am not sure how to do perspective to the lines separating wooden planks though as it is my first pixel drawing.

Dev2rights

look at how vanishing points work

then read about perspective in terms of cameras and photography. Then read about how its done mathematically

user92578

It's ridiculous how much stuff you can get done if you just start doing it

user92578

Is there a way to see what a C++ line of code containing a define call actually evaluates to?

Dev2rights

thats the only way to get stuff done imho haha

yes either search the define or use a breakpoint

thats how i would do it

likely a better way

user92578

11:09 AM

But not at "edit-time"?

user92578

okay

Dev2rights

cant you just project search for the define ?

or is it a function define ?

user92578

yeah, and I know what it does

Dev2rights

as a function define would still be variable based on its params

user92578

it'd just be nice to "get the big picture"

Dev2rights

11:11 AM

i also have no idea what IDE / Text editor you are using oc

user92578

VS ofc

Dev2rights

if it is constant define then it is what it is if its calculated at run time you should breakpoint it

you say ofcourse i havent used VS in years

got a job starting next week and need to go back to it

user92578

So now every class that is interested in the game settings inherits from IBaseConfigurable and in its constructor does this: AddDelegate(DELEGATE_BIND(<currentClassType>));

user92578

VS is awesome

user92578

Not a single thing missing

Dev2rights

11:12 AM

Yeah it is good, but i prefer xcode if i'm totally honest.

user92578

(now with the community edition)

Dev2rights

ill make a note of that

i think i have a full license somewhere though

user92578

that's probably better then

user92578

but for us poor hobbyists the community edition is just awesome

Blue Bug

@Dev2rights

Dev2rights

11:14 AM

yes ?

user92578

The door might need to be a bit "thinner"

user92578

because of the perspective

Blue Bug

I extended the edges a bit, does it give the illusion of perspective?

cdn.akamai.steamstatic.com/steam/apps/250900/…

Dev2rights

MOAR SHADOW + MOAR PERSPECTIVE

user92578

Just shrinking it to meet up the top of the wall would do a big thing I think

Blue Bug

11:15 AM

OTL it doesnt, I see... I thought extending the top would do the magic.

Dev2rights

id say it darkens the closer it gets to the floor similar to the walls as that seems how the ambient light is mocked up on the walls

user92578

@BlueBug Something like this:

user92578

see the top door

Blue Bug

wooha that's pretty sweet

user92578

11:21 AM

just a quick mockup

Blue Bug

the thing is though, since it'x a pixel thinging, I must do that coloring with each pixel, and also I am trying to stick with the 8colors I have prepared (because that seems like what many artist do, picking colors then using them over and over again)

it's quite a challenge to create that gradient with 8 colors..

user92578

True

user92578

Dithering is one option

Blue Bug

dithering, let me try that...

gud idea.

user92578

I hate <functional> error reports

user92578

11:26 AM

Gives me no fucking clue of what's going wrong

Dev2rights

Yeah that top door looks right

Super Smash TV with swords here we come!

Soapy

@Dev2rights I LOVE Smash TV

user92578

I need some help

user92578

Seems like I can't store std::functions in a std::set

Dev2rights

Yeah is a classic

user92578

11:31 AM

as you can't std::function < std::function

user92578

Errors raise when I try to remove a std::function from the set

Hjorthenify

Why would u even use a set for that?

user92578

no need to save duplicates

user92578

it's the same thing with vectors tough

user92578

no == on functions

Hjorthenify

11:34 AM

Try a map?

user92578

and store what?

user92578

I think I need to wrap them in a class

Hjorthenify

What exactly are u trying to do?

user92578

Hold a list of delegates to call

user92578

Remove delegates when the object dies

Hjorthenify

11:36 AM

So like Update calls?

user92578

kinda

user92578

notifies the objects the the game settings have changed

Hjorthenify

Except?

Why dont u use polymorphism for that then?

user92578

?

Hjorthenify

Have an abstract class with the function to call

Then cast the object thay needs to be notified to the abstract class and store the cast in a vector

or set

user92578

11:39 AM

@Hjorthenify It's a method that's implementation differs on every class

user92578

Wait a sec, I'll write a pastebin to show what I'm doing

Hjorthenify

Alight. Im on my phone but ill try to help cD

xD*

user92578

I think that's most of it

user92578

pastebin.com/mheTfRME

user92578

the important parts should be there

user92578

11:45 AM

@Hjorthenify aight, thanks a lot

Hjorthenify

You're overcomplicating this waaay too much. Use poly. I gotta go :P

user92578

okay

user92578

and no

user92578

oh, yes I am

user92578

Got it

Hjorthenify

11:56 AM

:D

user92578

std::vector<IConfigurable*> m_DelegateInstances;

user92578

for (auto d : m_DelegateInstances) d->OnConfigRefresh();

Hjorthenify

Much better!

Best to avoid the voodoo magic std::function does

user92578

yeah

user92578

I do use it quite a bit tough elsewhere

user92578

11:58 AM

like button callbacks

Hjorthenify

Erhhh...

I think you know my answer :P

user92578

most of the times it's required

user92578

kinda

user92578

you don't want base classes for fucking everything

Hjorthenify

Eh

Up to you

12:14 PM

Gotta love that game. Have u tried it?

@Tyyppi_77 Can i se the button code? Just out of curiosity

Jon

haven't tried it

user92578

not sure if it's necessary

user92578

I need to call methods from buttons

user92578

those methods can be anything

Hjorthenify

12:18 PM

Its lots of fun, but it's replayability is kinda low right now.

@Tyyppi_77 with anything you mean?

user92578

a method of any class

Hjorthenify

Aha

user92578

Hmm

user92578

SDL window modes are giving me a hard time

user92578

I want the user to be able to play in a window, in fullscreen and a fullscreen window

user92578

12:24 PM

Then in fullscreen mode, if focus is lost, it wont draw anything anymore

user92578

i gotta do some investigation

user92578

but first some GRP

Hjorthenify

forums.libsdl.org/…

Blue Bug

12:48 PM

@Dev2rights @Tyyppi_77

user92578

still too tall

user92578

otherwise looks good

Blue Bug

too tall?

user92578

the doors

user92578

messes the cool shadow perspective

Hjorthenify

12:50 PM

Agreed

@Tyyppi_77 Check the link I posted

user92578

yea I did

user92578

so that explains what's going

user92578

stupid DX

user92578

alltough I don't use render textures

Hjorthenify

Behind the curtains you might

user92578

12:53 PM

Don't you just hate it when you're having magical game mood and you're dominating and all

user92578

And then you're playing with a bunch of retards

Jon

sakurity.com/blog/2015/05/21/starbucks.html

Hjorthenify

xD

Yes I do

user92578

BTW I'm the 7074th best GRP player in the EU regions :D

Blue Bug

1) shorter 2) relatively longer.

Jon

12:55 PM

a door shouldn't be sticking out like that

user92578

yeah

user92578

align it to the wall top

Jon

if anything, it should be recessed in

Blue Bug

you don't like the blocky top?

Jon

i prefer the top one

Hjorthenify

12:56 PM

Same. Perhaps add some more shade towards the bottom of the door too

Blue Bug

how about "top of the door" you said "shoudln't be sticking out like that"

does the top details give it a feeling of sticking out?

user92578

yes

user92578

would you actually build an extra wall area for a door to fit in?

Blue Bug

and it gives negative impression... understood

user92578

but otherwise it looks really great :)

Blue Bug

12:58 PM

ty ty, now me back to painter.net

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