AI learns to WALK 3D (Part 2) 

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AI is finally being added to this AI project, and it only took half of a half hour video of homoerotic character rigging to get this far

This guy is the most sane Aussie programmer I’ve seen

Idea: co-evolve two AIs in a game of chase. Reward one for catching the other, and one for staying away. See if they learn different walking strategies

Now you need to make a horror game where throughout the game, the enemies AI progressively gets better and better at walking as they chase you.

When you started rewarding them for facing the right way, but they just turned their heads and kept walking backwards was like the ultimate "fuck you".

AI finding a loophole and looking backwards instead of learning how to walk forward is oddly relatable

Started watching your videos a few years ago. Finished my degree in Game Programming last year. What you do is absolutely insane, and I don't fault you one bit for 2 - 4 videos a year. Having said all that... I need to see these boys walking forward, and you must absolutely bring back the death laser. EDIT: I made you a death laser and sent you a link to the repo.... soooo, you know, part three would be cool.

I guess the models' feet are rigid, but the movement of toes plays an important role when walking and running, so adding another joint behind the toes might help a lot for AI to learn walking. (especially not backwards :) Additionally, I think instead of killing them when they fall, killing them only when their head touch the ground and giving serious penalty points for touching their body parts (may differ for front and back also) other than bottom of the feet, also giving less penalty points for hands may force them to learn getting up when they fall. This approach may make them learn to stand up properly and walk. Moreover, if you give them slight penalty points for touching the bottom of their feet than they may learn to jump towards the target which may lead them to learn to run even before walking :D All these might lead them learn to run on all fours at first, but they will learn to stand up eventually if the penalty and reward points are balanced well. If speed is rewarded more, then they will stay on all fours, but in this case if the height of the head is penaltied or rewarded, then standing on feet will be flourished. Maybe they can run like Tom Cruise some day :D Just speaking my mind, you are the expert :)

He really did have the second video ready. So proud Mr. Bullet.😊 With two videos in a week, I look forward to the next video in 2024.

Seeing the time lapses of the AI in their individual cubes feels disturbingly dystopian

They did pretty well considering they had no inner ear, spine or directional awareness related to their face, a working spine and the world. Something to give them priority for facing forward without twisting the neck, something to favour keeping the head relatively level with the horizon and something to favour holding a more upright position.

Makes ai walk and the first thing he does with it is make them do the fitnessgram pacer test

Part three? We still need to see them walk like humans.

could milk a third video from this making them walk straight

this is genuinely one of the funniest videos I have seen in a loooong time, my throat hurts from laughing so hard. You're legendary CodeBullet.

9:12 “AI Learns to Eat Ass” video when?

It feels strange to have 2 codebullet videos to watch in the span of 3 years

Hi Code Bullet, I think the backwards issue is related to the starting position. The T pose is just a bit back heavy, so they naturally fall back and continue there movement in that direction. If you where to start them with their arms forward, they would likely learn to walk in that direction.

The fact that in one of the vr experiences, they were... Doing adult things... shows that your ai is more powerful then ChatGPT

I see a lot of comments complaining about the audio but I checked all parts and everything seem to be in synced. I think this is a youtube bug which only a few experience. Edit: Saw a comment saying in computrr browser it's desynced but in mobile it's fine. Seems highly likely this is in fact a weird youtube bug.

I honestly thought he would just never do the rest. Finishing a project is very out of style, you go Evan!

Fellow fans of Code Bullet: it doesn’t matter if you watched the previous video before this one.

3:26, Guy's almost pulled a DIO off

24:17 Me and the boys walkin'

Part 3: Ai learns to run Part 4: Ai learns to hug Part 5: Ai learns love Part 6: I married my AI Part 7: WE GOT KIDS!

"we're gonna have to force them to stand up" yeah because they were gonna evolve into crabs if left unchecked

Mate, this may have been a better comment on your last video but I didn't think of it until now... You going off of any form of script do your own thing and entertain while talking about a concept or idea that I'm interested in, is a breath of fresh air in a RU-vid world full of video essays that clearly have to stick strictly to script. In the words of the great Code Bullet himself... I do what the fuck i want. Let me smash that like button as if it's the chosen one.

This two-part video contains an impressive amount of getting sidetracked. Hilarious, I might add. Watching AI fail at walking is an amazing and comforting sight. Laughing at real people falling feels bad because they get hurt, but watching an AI-controlled puppet fall in virtual 3D seems harmless

I think the proprioception idea is a good one, but I don't think its enough alone. In us humans, that sense is combined with the inner ear (which conveys a sense or roll, pitch and yaw) and vision (which provides directional targeting). So along with a sense of proprioception, you need to simulate an inner ear and a "cone of vision." Alas, you would have to train AIs to this task incrementally though. For example - you'd have to start training vision first (where it looks for a target in its cone of vision, and if it's not there, it turns its head/body until it finds it). The inner ear should already be working for this part of the training (so a sense of perceived direction and range emerges). And once it's learned to look at a target, then you can then try to train them to walk. As long as they learn to rotate themselves to look at the target first - they should walk forwards towards it. Moral of the story? They should look before they leap. :D

Honestly love the line graph bit

23:40 How tf did it take him so long to realize

"You have lost suck privileges" - Code Bullet

8 min in and I suddenly understand why so many animals evolve into a crab…

At 0 hours of training, the AI behaves remarkably like a newborn infant. The movements are random because it has yet to develop "awareness" of its limbs and how to use them. I just thought it was a really interesting comparison.

Omg, a vr horror rougelike where the ai monsters progressively get better at chasing you

Am I the only one that the audio is way ahead of the video?

I love how they immediately find a way to exploit the system to avoid walking forwards

This made me realize why crabs keep independently evolving

10:50 I love this guy’s humor and comedic timing. I can’t believe I’m saying this for the ad segment.

Now if only we could get Enigma Part 2

he finally mastered the art of making the audience believe he is dead and then boom he is back

I think the main 2 reasons for the AI behaving the way it does is likely because: a) friction is not quite correct making it not actually use their legs to push forward but their lean over weight to pull them. b) I assume every bone is the same weight and every joint the same strength which causes strange priorities. Oh also there could be a added reward to keep the center of gravity beneath the head within a range that might also help

These videos are beautiful. Please never stop being chaotic Code.

The buid up was so worth it, I thought they never even crawl elt alone majestically moon walk to the goal, big props dude you deserve a award.

It is honestly amazing that CB managed to get them to walk without falling over. I expected the usual AI exploits physics engine to happen and the guys to vibrate across the floor at light speed instead

it’s like watching infants learn, just like babies the AI only seems to know how to *push* at first lol. probably why it’s more comfortable moving backwards

These two videos might be the funniest videos you have ever made. Cannot stop laughing every time you get submerged in all these player models in VR

By Golly, not only the themes you chose for your videos and your skill to actually do them and show them are more than on point, but also your editing and silly jokes are hilarious, I cried from laughter more than once.

19:14 I love that they're so committed to the backwards thing that they hit the target, then _turn around so that they can still be backwards_ before heading to the next one.

It’s amazing seeing the AI use the arms to maintain balance

The "laying down walk" finally made me understand why things tend to evolve into crabs, great work!

The de synced audio is insane

While I buy a dakimakura for my crippling loneliness, Code Bullet makes his own AI so he has friends which will follow him. Now that's some determination!

Give them a reward for moving in the direction of their front, a reward for keeping their shoulder height up (but penalized for shrugging XD), and a penalty that increases the longer their toes are on the ground without their heels also touching the ground, and make them have a vision cone for finding the target they have to move to :D

I love the editing effort

24:29 Caught me all the way off guard while I was drinking. Almost ruined my keyboard lmao

the fact that codebullet got a bunch of buff men to moonwalk at him chode-first is truly the peak of AI

Pretty sure the reason they walked backwards is that they fell backwards in the default position, causing them to take a step backwards to prevent falling over. If you would just have tilted them forwards a little at the start, the first step would have been forwards and they would have continued walking forward. The backwards thing was funnier tho soI can see why you didn't try too long and hard to fix it.

Nice video as always! I think it would be really interesting to see how they would walk if you added "work" to their properties. So that they are trying tp walk with doing as little work as possible in relation to gravity and muscle strength. That way they would put their arms down and maybe try to stand straighter

Merry X-mas Code Bullet and everyone else. Nice to see u still making videos. :)

The waiting for this series was worth it ngl Codebullet always delivers

10:18 He says he's connecting to habitable country while showing france truly the funniest person on the internet

They walk backwards because they release from rest leaning backwards. You need to release them neutrally so they're not inclined to fall backwards. I'd probably add a random release wobble so they have to stabilise and each release is random.

i wanna see a part 3 where they walk like you know humans

Create a time limit on how long it takes them to reach the target so they have to learn to sprint

I’m watching this at 3am and I have a 10h shift at 6am Thank you for the dark bg

both of these videos is the living breathing proof of why I never progress in Unity when making games it's so entertaining to just mess with crap for hours on end

I liked the video up until the point you made their necks twist 180 degrees to circumvent the back-facing walking, I would've loved to see them actually walking, I think the video was really funny and wish to watch part 3, with more accurate posture and speed, maybe less disjoined necks

Actually if he could get this working where they walk forward then change the avatar to a zombie then give yourself a shotgun I think he might have the start of a epic zombie game

My adhd brain watching code bullet adhd brain: gosh why can't this guy just focus on the point of the video

This is by far the best and funniest codebullet video to date!

Honestly love the line graph bit. It also totally would work. Hours Trained x Walkability.

the long awaited sequel finally arrives

Nice touch with the @kickingmustang airsoft hits for the heel strikes at 22:25

so upset you only upload like 6 videos a year, every time i watch these i have to pause cus im laughing so hard. good shit man

I think that the sight of several men walking towards Bullet in the most unhuman way possible was worth all the effort he put into this.

I wonder what would have happened if the “touching the floor” punishment were a reduction in score instead of immediate failure…

if you want code watch code tutorials, if you want AI watch AI tutorials. If you want sus code and AI sexiness, watch the Bullet and don't break our balls.

The Greeks believed man walks through time backwards - only ever seeing where he’s been but never where he’s going.

You should teach ai to code and make an endless loop.

So, we actually have neurons in our spines that generate cyclic rhythm for walking. Look up Central Pattern Generator. It's pretty cool to generate cyclic impulses out of just a bunch of neurons connected in a loop (albeit, that obviously does not fit the layers of neurons models you can find in most NN packages...). Second important thing in walking, is that proprioception is used for reflex acquisition. Eg. certain angles of certain joints trigger the next movement in the sequence. Which for "AI simplicity" can possibly be done as a feedback/reset input on some CPGs.

The next step: 3d AI learns to beat Takeshi's Castle

Since no one is saying anything, Code, your audio is massively desynced. Love your content regardless.

Well, we will never see him again, he learned how to walk away from us thanks to AI

I find it interesting how similar this AI learns to walk as a baby does. Start off just randomly flailing with no real sense of what they’re doing, then slowly work out how to crawl towards an objective. It’s shockingly similar to real living things learning to walk, even considering all the jank

i love these ai learns to walk videos cant wait for what you do next

a baby has adapted this as his form of crawling 7:03

23:24 "My God that is hard to look at". No pun intended. Then proceeds to turn the camera back and look again.

Dude! Two videos in less than a week! Oh my GOD. That never happens. Looks like the AI that writes the script for the videos has been fine-tuned quite a bit...

“I’m not a scientist” is literally a computer scientist

The AI is truly having a gold experience

You did the unthinkable, you wanted to do something as simple as walk and ended up making AI generated JoJo poses

15:01 British soldiers bravely charging through no man's land into machinegun fire (1917)

Imagine if you found out a more efficient way to run than we already do

I got a better laugh for 26 minutes watching this video than I did in this year Thank you so much bro, what a quality content XD

They call him code bullet because he's slow (like a bullet)

16:12 And in the end, it didn't even matter...

At the beginning of the video when the guy was broken and it was just hopping around and it just expands. I need more of it. I like it when stuff doesn't work, especially when it's funny

The good thing about your upload schedule is that since you upload every other blue moon, i can binge your whole channel when you actually happen to upload