Game Development

Jon

12:32 AM

Fallout 4 – Gameplay Exploration (PEGI)

►

Icy Defiance

3:06 AM

EVO happening this weekend, steam puts Ultra Street Fighter IV on 66% off

valve is smart

valve or whoever made the game

Noctrine

3:40 AM

@Almo Most of the fanboyism I see comes from kids and it reminds me of this quote I saw about console fanboys.

"They are 14 year old playstation fanboys, who have a religious devotion to their console brand of choice. This stems from the teenage search for identity. Having made violently strong cases for their favoured console in arguments with their friends at school,

they are now ideologically wedded to this position and unable to deviate from it one iota for fear of the inconsistency being seen as weakness, and more importantly, of it undermining their own fragile sense of who they are: a Playstation Fan."

replacing Playstation with your technology of choice - and 14 with your age of choice. For ages over 19, remove "teenage"

Almo

4:50 AM

@Noctrine i see the same thing with Nintendo fans who grew up with the NES.

@Jon looks nice.

Chris

5:42 AM

I grew up with all platforms I think

not really Atari and C64 but everything past that to a degree

if I didn't have something, one of my friends had it

NES, Genesis, 5" floppies, Gamegear, Windows 3.1, Mac OS 8(?), Gameboy, SNES, Dreamcast, Saturn, N64, PS1, PS2, Gamecube, PS3, Wii, Xbox, Xbox 360, Wii U, PS4

and now it's iPhone, iPad, Android tablet, we'll see how VR plays out coming up. I dunno, like and dislike things about each platform, but if there's something fun to play on it I want to play, I'll find a way :p

Shane Kelsey

6:58 AM

I love consoles.

Chris

I like consoles too, though these days it feels like an inconvenience to have yet another computer that has to be hooked up to a screen. PC has the same capabilities as a gaming console, as well as being able to do everything a gaming console can't :/

double-clicking on a game is so much easier than having to switch HDMI input, boot up the console, find the controller again, etc

mind you, a gaming console has the appeal that it's gonna work out of the box without fussing around with settings and hiccups

Shane Kelsey

I concur, It's a sad story though consoles take up a higher percentage of the market. Has to do with kids I would imagine.

when I was young a computer was something for adults, but I still wanted one.

consoles mobile then computer

I would love to make a console.

It would use compact flash medium

^^

I compact flash card can hold twice as much data as a dvd

Chris

discs suck lol

Shane Kelsey

I would think, that would be were next gen would go. something with a lot of space.

yeah I Don't like them nearly as much as the nintendo cart

so I follow a tutorial on SDLTutorials, type out all this garbage to find it's built around 1.2 not 2.0

I need to buy a book. All I have found for 2.0 is how to cycle sprites and display an image.

Krom Stern

7:13 AM

Hey, whatsup? )

Shane Kelsey

nothing much, how are you?

Krom Stern

good, thanks, polishing Alpha before release

and you?

Shane Kelsey

woke up around an 1 hour ago. can't get back to sleep. might play diablo

Krom Stern

what time is it now at your place?

here it is 10am

Shane Kelsey

3:15am

Krom Stern

7:15 AM

oh

thats late )

US coast?

Shane Kelsey

eastern

yeh

know anything about Quazal the multiplayer middleware package?

Krom Stern

sorry, never heard of it, ever

what is it?

Shane Kelsey

To my dismay I think it makes a lobby for multiple players to join a game like moh.

Krom Stern

moh?

Shane Kelsey

I was hoping that it would support mmo

probably too much for a middleware package.

metal of honor

Krom Stern

7:20 AM

medal? ))

Shane Kelsey

yeh

^^

Krom Stern

I'm not MMO guy at all ))

just doing my humble old-school RTS )

Shane Kelsey

IBM has a research paper on MMO network architecture. I will look into that.

you play classic Starcraft?

Krom Stern

I have played it before, not competitively though

Shane Kelsey

extremely difficult

Krom Stern

7:24 AM

I think I had stuck in SC1, around the middle of the Zerg campaign

Shane Kelsey

what is your choice of RTS

Krom Stern

so-called german-school RTS

Settlers, Anno, Knights and MErchants

a mix of Warcraft and SimCity

kind of

and yours, SC ?

*StarCraft?

Shane Kelsey

yeah sc2 and tides of darkness

wings. I haven't spent any money on the expos

Krom Stern

oh ToD, what a nice time that was )

and BtDP, with mushroom forests xD

Shane Kelsey

yep, loved it.

Krom Stern

7:31 AM

do you remember how crisp WC graphics was in that era? Full 640x480, pixel-perfect! )

Shane Kelsey

I do.

Strange how impressions change as time goes by.

Krom Stern

yeah

Shane Kelsey

afk diablo

Krom Stern

bb

user92578

9:00 AM

Sweet 17!

user92578

Good morning!

Krom Stern

9:34 AM

guten tag )

user92578

9:49 AM

Got a new phone for birthday gift, Samsung Galaxy XCover3

Kevin van der Velden

Happy birthday then I think!

user92578

thanks!

user92578

11:01 AM

The actual lerping looks a lot less cooler than the weird thing I had going on

Chris

using any cool curves or tweens or smoothstepping?

happy bday

user92578

ty

user92578

just plain old lerps

Chris

they are boring alone =)

user92578

yup

user92578

11:39 AM

float Quad::easeInOut(float t,float b , float c, float d) {
	if ((t/=d/2) < 1) return ((c/2)*(t*t)) + b;
	return -c/2 * (((t-2)*(--t)) - 1) + b;
	/*
	originally return -c/2 * (((t-2)*(--t)) - 1) + b;

	I've had to swap (--t)*(t-2) due to diffence in behaviour in
	pre-increment operators between java and c++, after hours
	of joy
	*/

}

user92578

You can smell the frustration of the guy from the comment alone

user92578

I guess this is where using Unity becomes pretty handy

user92578

Having all cool curve stuff really easily accessible

Chris

there's plugins, you can even just create a Curve and edit it in the editor all easy

user92578

Do curves affect the interpolation function?

user92578

11:45 AM

Or could I just simply instead of passing in the straight interpolation percentage to Lerp, feed it trough a curve

user92578

So instead of Lerp(start, target, helper.GetPercentage())

Chris

well, I think Lerp clamps to 0f or 1f, but I imagine there's some sort of curve thing to go outside those bounds if required

user92578

I would say Lerp(start, target, Curve(helper.GetPercentage())

user92578

My lerp doesn't clamp

user92578

So I should be able to do that, right?

Chris

11:48 AM

oh true, yeah if it doesn't clamp then that's fine

user92578

So I can actually implement the curve behaviour in the InterpolationHelper-class

user92578

11:58 AM

Oh and thanks a lot for sharing your utility class yesterday @Chris, it really helped me a lot :)

Chris

My pleasure

man, I was looking at this MegaSphere game again, antonkudin.itch.io/megasphere

and checked out the dev's youtube channel, watched some stuff. I dunno if this is new or if I just never knew, but Unity's SpriteRenderer supports normal mapping and shadows right out of the box, just tried it myself

user92578

12:16 PM

That's cool

user92578

I really should properly check Unity out sometime

user92578

Now I need to dump a shitload of curve functions to the curve class I just created

Chris

lol

I never got that far

decided that SmoothStep was good enough for me :p

user92578

Is there an editor that I could draw & edit curves in and it would give me an equation for it?

user92578

Oh I should probably try smoothstep

user92578

12:22 PM

float smoothstep(float edge0, float edge1, float x)
{
    // Scale, bias and saturate x to 0..1 range
    x = clamp((x - edge0)/(edge1 - edge0), 0.0, 1.0);
    // Evaluate polynomial
    return x*x*(3 - 2*x);
}

user92578

That's from Wikipedia

user92578

Do I have to clamp?

Chris

dunno

user92578

I don't think so

user92578

Smoothstep looks good tough

Chris

12:23 PM

and you can smoothstep a smoothstep for a smoothception

user92578

lol, sure

user92578

Oh I should totally add that

user92578

Attaching curves to curves

user92578

just gotta watch out for not creating an infinite recursion

Chris

curve editor, try cubic-bezier.com

user92578

12:25 PM

Yeah I saw that but it just gives me a CSS code, not an actual equation

user92578

But I guess I could implement cubic-bezier and use that with the parameters it gives

Chris

ahh dang

user92578

oh wait I can't add a TInterpolationCurve parameter to the TInterpolationCurve constructor

user92578

Creates an infinite inception

TheMuffinCoder

12:43 PM

@Almo Ey Almo! I got Geometry Wars on sale :D was only 3$

>.< Your scores are so high, xD I'll never pass you on the leader board

Pip

1:01 PM

eyo

user92578

hey

user92578

x^2 is the square of x

user92578

what's the word for x^3

user92578

cubic?

Pip

cube

user92578

1:05 PM

thanks

Pip

x^3 is the cube of x

after that you say "x to the 4th"

user92578

I'm trying to implement cubic bezier curves

user92578

I just need to find the y at given x

user92578

what the fuck is the third thing, t?

user92578

Cubic bezier curve is defined by four points, but in my case the first point is 0, 0 and the last is 1, 1

user92578

1:11 PM

so actually I only have two points

user92578

given an x coordinate on the curve, I should be able to figure out what's the y coordinate for the point, right?

Pip

T IS TIME

Kevin van der Velden

@Tyyppi_77 then you don't have a cubic bezier curve

Pip

whoops caps

Kevin van der Velden

@Tyyppi_77 nope

user92578

1:13 PM

what's the time for?

Kevin van der Velden

It's not time in this case

user92578

Can't I just treat the curve as a graph?

Kevin van der Velden

Uhm how to explain

Pip

I am apparently incorrect :)

Kevin van der Velden

@Tyyppi_77 no

Given that it's a curve and not a graph =p

user92578

1:14 PM

sorry for being a math idiot btw

Kevin van der Velden

You know bezier curves can have loops in them right?

user92578

noooope

Kevin van der Velden

3

This is the one that made it tick for me

user92578

cubic-bezier.com/#.85,-0.04,.24,.79

user92578

Basically I'm looking for an equation that I can plug those values in the editor I linked into

Kevin van der Velden

1:16 PM

P0 is at (0,0), P3 is at (1,1)

user92578

Yeah

Kevin van der Velden

The cyan and pink things are P1 and P2

user92578

Yup

user92578

You can't really create a loop there, can you?

Kevin van der Velden

Not with fixed P0 and P3

user92578

1:17 PM

Yeah, so can I cheat this somehow?

user92578

With a curve like that, I only have two variables right, "time" and "progression" as in the axes in the editor

user92578

And I'd want the progression value at specific time

Kevin van der Velden

A bezier curve is essentially a recursive formula

To get the third order curve you need to solve 2 second order curves, to solve a second order curve you need to solve 2 first order curves

Meaning:

Blue Bug

BEZIER CURVE!

I failed the project on bezier curve back in college... :(

Chris

that's actually quite cool, each P traverses from 0..1 linearly, and the curve is magically created

Kevin van der Velden

1:21 PM

Curve3( p0, p1, p2, p3, t ) = lerp( Curve2( p0, p1, p2, t ), Curve2( p1, p2, p3, t ), t )
Curve2( p0, p1, p2, t ) = lerp( Curve1( p0, p1, t ), Curve1( p1, p2, t ), t )
Curve1( p0, p1, t ) = lerp( p0, p1, t )

user92578

so it's essentially just a huge nested lerp?

Kevin van der Velden

@Tyyppi_77 non overloaded and skipped an optimization for clarity but that's the code

Yeah

user92578

Thanks a ton

Kevin van der Velden

You're using C++ right?

user92578

Yeah

Kevin van der Velden

1:22 PM

Templates :D

Got C++11? (Variadic templates? =p)

user92578

Yup

Pip

@Chris yeah it's really clever

Chris

no longer looks like voodoo magic

Pip

Still looks like voodoo magic :P

Chris

the science is showing!

user92578

1:30 PM

Sorry, stupid questions continue

user92578

Do I have to implement this for points, or are just single floats enough?

Kevin van der Velden

@Tyyppi_77 when did they start?

I've not seen any yet today =p

user92578

Probably exactly 17 years ago when I was born :D

Kevin van der Velden

@Tyyppi_77 single floats work fine, lerp doesn't care so the bezier doesn't either

user92578

Okay, now I've got the curve functions implemented

user92578

1:33 PM

now how the fuck do I use those?

Pip

variety.com/2015/tv/news/…

Kevin van der Velden

Same way you (properly) use lerp! =p

Pip

@Jon and anyone who likes Silicon Valley, there's a new show called "Startup U" coming out pretty soon. I don't know what it'll be like. variety.com/2015/tv/news/…

user92578

But given all the points, and one "x" coordinate, getting the "y" happens how?

user92578

Some pointers would be appreciated

Pip

1:39 PM

There you go

user92578

LOL

Kevin van der Velden

@Tyyppi_77 if you use a single float the x coordinate is the time and the Y is the result

Pip

user92578

Curve3(0.0f, x0, x1, 1.0f, t);

Kevin van der Velden

(That's actually curve3)

(A curve between 1 point is something that doesn't make sense =p)

user92578

1:42 PM

Like that? No?

user92578

That can't be right

Kevin van der Velden

Looks like it

Try it!

user92578

Do I pass in x or y coordinates as the two points that vary?

user92578

given that point0 = (0, 0) & point3= (1, 1)

user92578

passing in the y coordinates seems to work

Kevin van der Velden

1:46 PM

Ooh yeah

user92578

hmm it's not returning to where it should

user92578

Otherwise it seems to work

user92578

Yeah

user92578

It stops to 1.063847

user92578

And that's because the interpolation percentage never hits 1.0

user92578

1:54 PM

Now it works

user92578

Instead of going if (!interpolationHelper.Empty() && !interpolationHelper.Done()) { Lerp(); }, I now go if (!interpolationHelper.Empty()) { Lerp(); if (interpolationHelper.Done()) interpolationHelper = Empty(); }

user92578

And I clamp the initial lerp value to 0.0-1.0

user92578

2:10 PM

Aight, now it's working properly

user92578

Now I just need to add a few predefined curves

user92578

2:59 PM

Hmm now I need to refactor the gui element tweening system a bit

user92578

How does tweening stuff actually work in engines and such?

Kevin van der Velden

3:16 PM

No idea actually

user92578

I went with ApplyPositionTween(positionTweenDataStruct)

user92578

Aight menu sliding works again, a lot smoothly than what I used to

Blue Bug

nnnnnnnnnnnno!

I was so fixed to my code I forgot my plan to go to a theater. This ticket is now a trash. OTL

Almo

3:31 PM

:(

Blue Bug

Almo

one ofthe most important play mechanics in binding of issac is that your shots are sent out at shot_velocity + player_move_velocity

allows you to shoot around obstacles, and helps with the fact they only give you 4 directions

Blue Bug

Oh yeah... I need that fluctuating shot, but I am not sure how it got done. The bullets move slightly a bit weird. They didn't seem directly Initial_Velocity + Portion_Of_Player_Velocity.

Almo

right. well, whatever it is, you need to figure out something similar :)

looks like you're making good progress though

Blue Bug

Ty Almo <3 hehehe

user92578

3:40 PM

@BlueBug Looks awesome <3

Blue Bug

ty buddy! reading old transcript Oh...BTW where are you trying to use the curve for?

user92578

This can't be right

user92578

The curve control points' x values gotta affect something

user92578

well anyways I'm off

user92578

I hope I'll get this fixed tomorrow

Ali.S

5:38 PM

@Tyyppi_77 did you update bitbucket with your recent improvements? tomorrow I'm going to actually go through your code, and Thursday is going to be the first session of my class

Joe

5:49 PM

@BlueBug dude! looking good since i last saw it

Blue Bug

hehehe I ma slowly working on it! ty @Joe But still far long way to go...!

Almo

6:17 PM

@TheMuffinCoder you mean on PS4?

just keep trying. I've played tons and tons of twin stick shooters since they invented them

Robotron 2084 - gameplay - waves 1 through 75

►

check this level... an infamous robotron grunt wave

Robotron 2084 - gameplay - waves 1 through 75

►

this game is 1981...

Blue Bug

1981 binding of issac

|| 2014 Robotron 2084

Joe

sooo I downloaded and played HOTS... and I like it much more than i ever did LOL

but im garbage

Blue Bug

HOTS is simple fun game. Do you die a lot? Give a shot to Murky!

Now with Murky, you are never actually dead!

Almo

@Joe it's way, way simpler

makes it easier to get into

Blue Bug

or Lost Vikings. You play the game with three characters! Three life! And each of them have their own revive time. Playing with three life?! Wow so amazing!

Almo

6:24 PM

what server you play on?

if it's in NA, add Almo#1826 to your friends list

Blue Bug

me Asia server... can't play with anybody here dang it. Anyway it's 3 26 am here. Gotta sleep. Peace internet souls v_v. Night

Almo

6:44 PM

@TheMuffinCoder streaming rl

Joe

@Almo sent from "bludendguts"

taking a break for the moment but well get some later

Etienne Charland

7:38 PM

hey guys. Is anyone here familiar with pixel shaders in DirectX?

Kevin van der Velden

You mean fragment shaders?

Or, wait, yeah that's the same thing right?

Wikipedia says it is, I've got experience with the opengl version, depending on what the question is I may be able to help

Etienne Charland

Maybe. I'm used to C# programming, not C++ and DirectX; but it's something basic I want to understand

I got some code that passes video frame data over to DirectX, renders it to a RenderTarget, I want to process the data through a HLSL shader and get the data back from memory.

It's all working except that the shader isn't being applied in the chain.

and I want to understand
1) how/where is the shader supposed to be applied in the chain
2) for shaders taking several textures as input, how do I define those inputs

do you think it's something you can help me with?

Kevin van der Velden

Partially

The first is that you'd make the RenderTarget a texture (it defaults to the backbuffer, i.e. what is shown on the screen)

Then you'd use a full screen quad with the required pixel/fragment shader

Etienne Charland

I have the RenderTarget texture, the code is here
https://github.com/mysteryx93/AviSynthShader/blob/master/VideoPresenter/D3D9RenderImpl.cpp

I'm not sure what a full screen quad is, but the code does define vectors to draw into

The function ProcessFrame is what gets called for each video frame

Kevin van der Velden

Well, it's a quad (polygon with 4 points, in this case a rectangle) that fills the entire screen :)

Etienne Charland

7:50 PM

that must be vertexArray in CreateRenderTarget()

Kevin van der Velden

Seems like it

Seems like the code is already doing what it's supposed to? Are you just unclear of where the magic is happening? =p

Etienne Charland

It's not doing the magic; I get the frame data in and out successfully but the shader doesn't get applied. I don't know where to look.

The shader I'm loading is a very basic shader that should invert the colors; and that's not happening

Kevin van der Velden

Hmm bleh, sorry can't help you. Too much unfamiliar directx code

Etienne Charland

do you know where the magic should be happening in that code? At what point in the chain does the shader get applied?

Kevin van der Velden

I don't know how it works in directx sorry

Etienne Charland

7:54 PM

and there is code to define shader constants such as register(C1), but do you know how to define inputs such as register(S1) ?

because some shaders take several textures as input

Kevin van der Velden

I dunno, I've found some code that uses PSSetShaderResources

That has a count argument

Etienne Charland

it seems close; for DX11. I'm only using DX9, not sure what the equivalent is

Almo

8:33 PM

@TheMuffinCoder hey! so I now know why nobody plays Geometry Wars 3 online. It's not a fun multiplayer version. Local multiplayer is ok.

we play some rocket league next time

get in some normal (not ranked) 3v3 or 4v4 :)

user92578

8:56 PM

@Ali.S No I didn't push the most recent improvements yet because they're still a bit broken, but I will do so tomorrow. They aren't that big improvements, so missing them probably and hopefully isn't going to be that big of a deal. If you have time, I would love to get some feedback on the code, besides of the uselessness of the comments in the code :)

Ali.S

@Tyyppi_77 I might make some changes in your code, are they going to be greeted with open arms on your side or not? :P

TheMuffinCoder

9:27 PM

@Almo :D sry Almo that I havent replied earlier :P I was on the PS4 most of today

Geometry Wars is fun with capture the point! :D

And Ill play rocket league with u once I get better :P

user92578

@Ali.S That's actually a good question... Hmm... To be honest, I'm not quite sure. What kind of changes are we talking about? I'm sorry but I tend to get a little touchy? (is that even a word?) when it comes to other people modifying my code... One thing I definitely could do is take a look afterwards of what you changed, and make decisions then. Does that sound okay to you?

user92578

BTW new phone does not like the transcript, rendering all black and is laggy as hell

Ali.S

@Tyyppi_77 sure... for now I only changed folder structure so that it makes a little bit more sense to me :D but I don't think i'll be editing things very much

user92578

okay, have fun :)

user92578

It's 0036 in the night so i really need to get some sleep now

Rouze

10:25 PM

I'm using Tiled to make my maps, but most (if not all) of my collisions will be handled using Box2D. Is there any point in using A* Pathfinding when I could use collision avoidance and steering behaviours?

Joe

@Almo im gona try a game, you playing?

Almo

11:08 PM

near dinner time

can't commit to a game at this moment :)

Joe

no worries lmk when you play

Almo

ok :)

we talkin HotS right?

Joe

yea

Almo

ok just makin sure :)

Joe

im trying to save 7k for sgt hammer

Almo

11:08 PM

SHE RULES

she's my main, you know

Joe

only champ im good with so far

ahh dag

Almo

if we play together i play tons of others

Joe

well kel thas? the blood elf was decent

im just doing random

Almo

get the extra shot range, extra damage at long range, faster Z cooldown, extra damage if you haven't been shot, increasing range in seige mode if you don't move, napalm, and extra range and damage on napalm

makes hammer super deadly

with all those range bonuses people in team fights just don't know they're being shot

Joe

yea and its really easy to ninja push a town

kind of cheap

but illidan is super cheap... not cool

Jon

11:12 PM

ninja's killed my dog

Almo

illidan isn't cheap... he's fragile

Jon