AI Learns Table Tennis

ragdoll overcomes it's spherical disabilities by violently shaking it's pelvis
Discord: / discord
Reddit: / b2studios
Twitch: / b2studios
Patreon: / b2studios

[@synt_axe]

AI: So what am I learning today? b2: Ping pong AI: Cool! b2: *pulls out taser and a bag of Doritos* AI: ...

[@gamering149]

and a unholy amount of jelly beans constantly being launched out of a tube

[@ehmaree]

@@gamering149 And each jellybean is $33

[@AndroCubed]

@@ehmaree it costs 400,000$ to feed this ai, for TWELVE seconds.

[@orangeduckduck2996]

He eats jelly beans like heavy shoots bullets.

[@cassidy_and_evan]

You forgot about the truck of gummy bears.

[@Sirpwnsalot]

ready to watch an intense table tennis match with someone spasming on the floor for the first 12 hours

[@jonasheikkila8204]

yeahs

[@Tarvitan]

Fr

[@toblobs]

Not much different from regular table tennis

[@Subscribe15387]

HOW IS THIS 8 HOURS AGO WHILE THE VID IS 1 HOUR ago

[@Astropine]

@@Subscribe15387 it was a premiere, you can comment before you watch it

[@toblobs]

I seriously can't wait for an entire series of PPO based AI to win at the Olympics in 2078.

[@richmail]

That would actually be sick. Researchers VS researchers. Who can make the best table tennis AI?

[@SSukram_]

​@@richmailthere is a competition where researchers try to make an ai that mines diamonds in Minecraft, the fastest ai wins

[@richmail]

@@SSukram_ Whats the competetion called?

[@SSukram_]

@@richmail I don't remember rn, I'm not even sure if they do it anymore

[@Elemental...]

@@richmailthey have a competition like that in the game “Rocket League” where coders code bots and then make them face off.

[@dylandgs]

As an american I really appreciate you converting kilos to something I can understand

[@Anothergingerman]

🇺🇲🦅WHAT THE FUCK IS A KILOMETRE🦅🇺🇲

[@redstonemaster10]

@@Anothergingerman Obviously a kilometre is a milli-megametre, that is, a thousandth of a megameter.

[@nathantan4603]

@@Anothergingerman you mean kiloMETER

[@MachoDavid]

Hamburgur

[@tomohawk2177]

It’s normally the opposite way around in my experience

[@necrolycoris]

i love the choice of NOT giving the AI flat feet, opting for spheres JUST to make it fun. Worth the 3 months wait 👍

[@bugzilla318]

The sphere feet are somehow easier to balance on, as explained in a previous video. I do not understand why or how this works, but it does make it look like they’re skating which is funny.

[@NopeNaw]

​@@bugzilla318Without knowing the exact intricate math, I would guess that the reason is that the feet would effectively require two additional joints and the AI would need to be trained to use like actual feet (otherwise it would just be tippy toeing around and be pretty much the same as the ball feet AIs). The ball feet are likely a case of "good enough" approximation of what humanoid locomotion would be, without needing to spend an inordinate amount of time replicating the functions of ligaments and tendons that allow us to use our feet the way we do.

[@puppergump4117]

@@NopeNaw Also, reducing the number of inputs and outputs speeds up the learning and thinking process by an order of magnitude, especially on non-specialized graphics cards or cpus.

[@no_dogs]

but most importantly, they kept fazing through the floor

[@kittleo3614]

"You can think of me as an AI, trying endless amounts of random shit and occasionally learning something new." Story of my life.

[@Helios8170]

Isn't that just all types of intelligence?

[@thewiseoldfox]

If I had tennis balls instead of feet, I'd have a similar walking method

[@derpyderp5396]

4:26 "the most active pelvis since wilt chamberlain" got me rolling💀

[@hexagon8899]

give the AI a reward for longer distance strides, should help with more realistic walking

[@hansstrudel9614]

I think something more important would be giving them some actual feet

[@aljon5947]

yea i think actual feet would be better(imagine walking with wheels as foot) but i remember he said something about it in the bowling video being too hard for the AI

[@xxizcrilexlxx1505]

​@@aljon5947if i remember it was that is too complex for the IA and it made imposible the smallest leaps on the IA

[@randomblock1_]

If you had softballs for feet I'm pretty sure this is how you would walk too

[@Roflcopter4b]

Great. Um. How? The fuck is a stride? The AI knows location and angle.

[@redacted0_5]

Don’t know if you’ll read this, but the humour here lands a lot better than the previous video, so good job :)

[@b2stud]

tyty

[@DaRandomCommenter]

​@@b2studhehe, funni

[@aguyontheinternet8436]

the big funni

[@DaRandomCommenter]

@@aguyontheinternet8436 the bigger funni

[@johngellare3507]

I love how you had to specify for it to stay on it's side of the table because it would 100% climb on the table and just violently shake around

[@alexisb3829]

I would like to see it without that specification lol

[@TabletPencil]

2 parts within an hour??? this is amazing, can't wait for next years upload

[@diamonddudeygo]

"Table tennis is harder to solve than bowling or being spider-man" this one starts strong

[@pedronunes3063]

6:29 This scream is so cute

[@bazem]

1:41 - Measures the height in feet Makes fun of North Americans for not using kilos

[@TunaBear64]

Worst of all, it used Kilos, Kilos is basically mean "a thousand" A thousand what? Use KiloGRAMS next time.

[@nullmeasure6155]

I started chuckling when the continuous stream of rainbow candy started going into your guy's mouth and nearly stopped breathing when the taser animation came in. All I can say is so true.

[@jimibunni]

I know you have hundreds of thousands of subscribers, but i still dont think you have nearly what you deserve. Your content is so expertly made, being funny, entertaining, and informative all in one. Keep making such great content!

[@b2stud]

Thank you so much! I will do my best!

[@jespervanbommel]

i love the accurate simulation of the magnus effect at 5:11

[@ataready8810]

Fellow Aussie here, I'm proud that you've gone from one successful video on BTD6 AI to one banger after another. My favourite so far has to be the cannons that never miss video because of the personality in the scenarios. Keep it up man, your animation skills and video production are excellent.

[@gamermanh]

Goddamn hilarious to watch that AI struggle with the spherical feet you gave it, wow Does perfectly well standing in a small area but the second it needed to move any kind of distance without control over the arms (which did practically ALL of the balancing) it flopped over

[@Moonlight_Drawing]

Just a suggestion, you should add a timer that shows the real time hours to the sections where the ai learns

[@b2stud]

good idea, ill be sure to implement it in the next video

[@henningerhenningstone691]

man this video is just perfect... the consistent art-style, the explanation and animations to go along, the humour. Absolutely bloody brilliant

[@foxlive420yes9]

As a American I do appreciate how he translates kilos into hamburgers it’s much needed for me to understand it

[@Pain.enjoyer]

How are there no reply’s on this amazing comment

[@archaniac529]

did the math on this actually. if we're going off of McDonald's burgers, 85kg is about 405 hamburgers

[@stephenaulin8298]

Xd

[@DeuxisWasTaken]

I think the jerky small movement is because you punish distance travelled by limb, not acceleration which is what actually wastes energy - a single big movement of a leg is less wasteful than constantly jerking it back-and-forth and having to apply a lot of force to achieve that acceleration. Nice video anyway, subbed.

[@gr1ffyyn351]

I love this channel, you’re the reason I got into coding, so glad you’re back!

[@sodancookie2905]

This is one of the only channels that I genuinely get excited every upload. Keep up the great content!!

[@Clop]

you're now one of my favorite creators. i love stuff like this it's fun. keep doing you man, you're awesome.

[@lpsp442]

b2, yours is the first youtube channel I think I've ever encountered (certainly the first AI channel) to consistently make pause the video because I'm *creased* up laughing. The witch's spell got me in the bowling vid, and now.... Will Chamberlain, eat your heart out! 🐟❤

[@thesnailmachine7181]

My partner and I have formed a strong emotional attachment to this little guy. We call him Gregor and we just want him to be happy with his work.

[@thatweirdphoneguystickman5596]

As an American, I'm so glad he converted kilos to cheeseburgers, otherwise I wouldn't be able to know how many Kilos he weighed.

[@BroudbrunMusicMerge]

"Smuggling extra information into its neck" is my new favorite context-free phrase

[@yeturs69420]

That is such a good idea for backers, making a little background character for videos.

[@Yippee-sk1fm]

1:47 If four burgers equals 1 pound then 773 divided by 4 would be 193. But 85 kg equals 187 lbs. so there’s a 6 pound difference. So technically 6 x 4 would be 24 then 773 - 24 = 749. There should only be 749 burgers as 749 divided by four is 187.

[@Cutielove9770]

The dedication to do something this unnecessary is voila 😂😂😂😂

[@GDnobrain]

GG you passed your maths test! (Not making fun)

[@spainwithoutthes101]

Why is this a dhar mann title without the instantly regrets it

[@diegodoesnothing6092]

AI is forced to play table tennis, what happens next is unbelievable- b2 studios

[@biscade]

is_shocking

[@joshuapatrick682]

I think this raises a bigger question about what constitutes programming? Because you aren’t actually programming anything, you’re just defining the parameters an algorithm used to program something.

[@SkyBreaker321]

YOU FINALLY POSTED 😍 I love these videos bro, much love

[@Splarkszter]

amazing work, interesting, educative and extremely funny. You skills are extemely good.

[@b2stud]

Thank you :)

[@forlape]

mans going thru the entire wii catalog gotta do boxing next

[@widojay2048]

I think these kind of 3D rendering videos are awesome. You’ve built a whole world a character and you animate it

[@luketrzeciak6967]

Wow man, super entertaining. The math, programming, graphic design. Everything man, perfect!

[@scoper7897]

love this AI videos man. keep it up

[@MrMeoow91]

I just could not stop laughing at the silly movement by the AI

[@CliffThePerson]

1:48 thank you for giving measurements that we will understand.

[@RayHosterMusic]

0:29 "Table Tennis is a lot harder to solve than... being Spiderman" Not a quote I ever thought I'd hear, but here we are. Honestly this channel is hysterical, really enjoy the AI content!

[@israelt.hernandez8612]

6:24 ._. HeadShot (diying fish noises)

[@BrakeCoach]

0:58 bro looks like hes dancing gangnam style

[@djentlover]

Why are these my absolute favorite videos in a long time

[@TheInfamousLegend27]

"trying endless amounts of random shit and occasionally learning something useful" i've never felt so understood in a programming video lmao

[@dogethefirst1]

3:10 i named that 1 guy watching him "Gerald" unless you already named

[@Izayoink_Saccuy]

People say ai will take over the world and yet they can't even play ping pong

[@brennansmith4670]

These videos are hilarious, your channel is so underrated

[@nemtudom5074]

1:10 Gotta love how its going to be the most dexterous creature alive once its finished training .....But only in its right arm lol

[@GlitchGames_A]

I feared the fast limb movement punishment would make the ragdoll walk by taking rapid, short steps. It did end up doing that, but looking at how the face is moving, maybe it's not that big of a deal

[@Wizzkidwas]

As a left handed person this video makes me feel left out lol Also 6:29 Love their yelling

[@gaopinghu7332]

It makes you feel "left" out? Lol.

[@Wizzkidwas]

@@gaopinghu7332 Somehow I've never actually heard that one before, I'm impressed!

[@Wacky0zack]

Half of the impressions for this video must have been used on me. I see this video everywhere I go and all the time. I didn't look like a bad video but just a video I wasn't in the mood for. I finally caved and clicked on it. I enjoyed it

[@Unknown-yt2hb]

This was really well edited.

[@The-EJ-Factor]

To make it more human you need to teach it what would and wouldn’t be energy efficient. Which is harder to do than it sounds.

[@creepyscaryskeletons3034]

Nobody: That one person in the stands: 👀3:50

[@OmniSync]

thats an ai toddler

[@inoobboi5438]

i have never been so entertained by physics explained by ragdolls and fish in my life

[@JWhite-qi5zv]

The Wilt Chamberlain joke made me audibly laugh. Completely unexpected. 💀

[@GeorgeDCowley]

4:50 It's probably because you punished it for big movements (like lifting the legs).

[@nikkiofthevalley]

5:17 Hey, it's a SUVAT equation! Didn't expect that, I would've expected a Euler integration with Newton's laws of motion, which is the usual way people do this.

[@natbia5362]

🤓

[@nikkiofthevalley]

@@natbia5362 You are literally watching someone make an AI that plays table tennis. The fuck are you judging me for?

[@OmniSync]

​@@natbia5362🥸

[@shawnakervin]

i love the background music. simple and fun!

[@SRHtheHedgehog]

I cannot begin to tell you how much i love these videos i cry laughing every time i love them so much

[@AlexJoneses]

This is going to be epic

[@alansmithee419]

2:25 I have never seen one of your AIs so despondent.

[@jdhgeui2838]

This is such an amazing channel

[@Digby8]

Another incredible video!

[@multiarray2320]

why are there two parts instead of just one video?

[@b2stud]

cha-ching

[@OhioanOrganDonor]

@@b2stud secure that bag, b2. you deserve it.

[@disassembly4147]

​@@b2studshut ub

[@luditheuber]

​@@b2studheheheheeeeeeeeeeeeee

[@alaggs7279]

next: AI learns competitive yugioh

[@isaacgreen9495]

Incredible! I love the fish interactions XD

[@saratan.]

Love ur vids mate keep it up ❤

[@szynke9553]

3:00 its me enjoying capitalism

[@GamerChad_EaturBalls]

4:35 he's having a seizure help him

[@shaurmiath6719]

I like that it doesn't so much "walk" as kick the ground over and over as quickly as it can.

[@near5148]

It looks goofy as hell

[@ThatOneHacker305]

“The ai will have to have full control of its right hand to succeed” good luck

[@Xizilqou]

you should use stencil shadows for the lighting in your videos instead of shadow mapping, shadow mapping is noticeably blurry and low res and sometimes leads to the "peter panning" shadow bias effect at 0:29 where when the ragdolls fall you can see the shadows disappear into the ground. Stencil shadows, often called "shadow volumes," are based on the actual geometry of the meshes instead of a camera image taken from the light itself and as a result have none of these problems. There's probably a plugin for these in whatever game engine you're using, it'll look so much better.

[@Xizilqou]

This video has an example of stencil shadows in the same sort of indoor lighting style that you often choose to do youtu .be/CCIwiC37kks

[@bluey-next777]

6:29 HEADSHOT

[@bunnyonabunwithagunnicepun5689]

Can’t wait for Part 2!

[@jaygvswrld]

love when you upload

[@HappyGingerWolf]

If the AI is sneaking data into the neck movements, why not just give it a stored value it can edit? Wouldn't that achieve the same result without the jittering?

[@Mahonokage]

I'm curious to see how an AI would handle an "energy consumption" problem. Seeing them walk with as many taps and movements as possible in the arms and head is funny, but also only possible in a state of infinite potential energy. It could force the AI to learn how to use assumed positioning with bigger (more natural looking) movements, in other words, kinda like rollback netcode in online games

[@Helios8170]

"With a little bit of rearranging" *shuffles the equation like a deck of cards*

[@amandahugankiss4110]

3:00 What you have described here is torture. Which explains the effectiveness. Well done!

[@nocluebruh3792]

1:28 honestly... I would have made the same mistake lol

[@ricopuper]

Pls make ‘AI learns to play soccer’ next.

[@doggo790]

And make AI Ronaldo 😊

[@heavencanceller1863]

I love your videos. The characters are so cute!

[@shayaharon5015]

When b2 uploads its a good day

[@citratune7830]

2:30 AM??

[@citratune7830]

stayed up to see this

[@ohhi687itsme8]

8:24 he finally admitted it

[@MostmajorofLs]

I watch your videos during school. 10/10.

[@DJ_Gamer816]

8:22 I just love how he just describes what he is doing

[@Learn_The_Cube]

5 am est 😢😢😢

[@rappyrap2819]

I see these walking AI videos often, and I notice they are never given feet, they always either have spheres or the end of a square leg. I wonder how it would go if they were given feet, even just simple rectangles that they could move.

[@ts4858]

I think spheres work better than rectangles though

[@MaskedDeath_]

"the AI is smuggling extra information into it's neck" is not a sentence I ever expected to hear. It is strangely resourceful, though.

[@Carambardoublenougat]

This is so cool and so well explained ! nice job dude !!!

[@sirgoosehonk2716]

0:50 bro tweakin💀

[@hexa1905]

1:47 funny bru but you just measured length in *feet*. Use meter, 1/300.000 of what light travel in 1 second. Pretty intuitive right ?

[@zachsmith3761]

“With the most active pelvis since Wilt Chamberlain” now that is a great joke that may unfortunately fly over many peoples’ heads

[@spoogie4438]

1:46 thanks for looking out for your American audience