all that's left now is to put this water/fish system into the eco system he did.

I said out loud "Thats so fucking cool!"

Then you definitely will like ABZU game.

@@Sparrow420 I think he could make CoD Ghosts now, he has fish ai!

I would buy that no cap.

Thanks Dani! :) Yeah that stuff boggles the mind

Dani?

Martino Ericsson ik

Hi Dani you got me into coding and I’ve watched nothing but coding for days. :)

WOAH IT'S THE REAL DANIIIIIIIIIIIIIIIIIIIIIIIIIIII

Or maybe you copied

@@pikachu-jf2oh or maybe this is the original

@@grownman9984 or maybe this is the simulation

Actually watching this at 2am

@@RASD87 2,05

@Haph try and aboid making such dad jokes in the future.

@@benardnguyo6817 Ha, his jokes are so bad, his mind must be a boid.

boids will be boids...

Don't let the door hit you on the way out.

H

This goes faster though

Making the game is the easy part. The hard part is the other 99%.

I really really like this comment

@@tomohawk5411 i like it too

I truly apreciate this picture (your profile image) very, very, very much.

lmao

Cracking open a cold one with the boids

You watch that new amazon prime series, “The Boids”?

UGE Those Twitch ads are so annoying

Rafale25 I binged it all it’s a good show. Flixtor.to is a website like Netflix but has EVERYTHING YOU COULD EVER WANT. I bought vip for rlly cheap.

\*creates entire physics model\*

@Holy Spiritual Practices Good to know. Imma keep it the way it is though, so people understand your comment.

Tbf I make games and I'm completely lost with the above.

@Holy Spiritual Practices It's not commented out tho. It's two nested opened multi-line comments... so this is not even the comments' final form!

@@TheAero1221 backslashes? guess you are a diehard windows fan lmao. :P

"simple instructions"

That's emergence for ya

Emergent behaviour is almost always amazing

Try doing it yourself. IT'S NOT SIMPLE.

@@basicallybrand Specially if you remove some degrees of abstraction. The generation of points (the first part of the video) is rather simple in C. Try making that in assembly. Or take a look at how the video card interprets them. Making something complex from the most simplified instructions is the bloody purpose of computers.

Happy you enjoyed it :D

@@SebastianLague Chapeau for your great explanations. I don't know why I feel that those coding explorations are actually really great dev logs and we may get a kick ass game after a while! Keep up the excellent work. I'm learning a ton from you and you inspire me to learn even more on my own.

Yeah i’d love a more elaborate video on that!

@@SebastianLague I saw something similar a while back, ukposts.info/have/v-deo/qqeHk5p4o42Iz6s.html video titled "N Equidistant Points on a Sphere"

Should have just used spherical coords-choose angle1, angle2

Spring is sprung, the grass is ris. I wonder where the boidies is? The boids are on the wing. Now isn’t that absoid? I always tort the wing was on the boid!

Jersey birds are just pidgeons with bad attitudes.

You catch on quick. Eggs? What about the eggs? Plastic! Yes, plastic, in whatever color you can think it!

Craig Reynolds said the term is a contraction of birdoid... boid!

Let the boidies hit the floor!

stop flexing on everyone 😭

Ikr made a calculator... pretty much a god now

@@BeardedButter I made a calculator in python that makes sence at the time. I remade it after I mastered python and it wont work

@@nathann1445 lol

bro how

Just saw this - legend :D

Those are girls

oh shit

Maybe add even "land boids)

@@gustavowadaslopes2479 Or rabbits and foxes.

@@FlyingDominion They felt kinda stiffy compared to the boids. I guess if they get slightly deeper behaviors (camouflage, hiding and maybe tracking/smelling.

@@gustavowadaslopes2479 I would love to see the ecosystem expanded on with more realistic behaviors.

@@memeymeemerson5426 Yeah. I think seeing some sort of "ecosystem" for a game or simulation game being done animal by animal followed not only by evolution but also by new behaviors implemented and new environments. It would be like seeing a documentary about evolution on earth, but being able to use completely new environments and systems, while keeping everything considerably simple and engaging.

Bob Ross + 3B1B + Code Edit: Although 3B1B is kind of Bob Ross + Math, and (good) code includes math anyway, so I guess we can remove that overlap.

@@LabGecko I feel like coding train is more like Bob Ross

Thanks so much :)

Xaracen for sure but if that would it would be mad

@@xaracen7207 Not so sure about that. While it would eat quite a bit of performance, it should be doable on a decent computer if optimized accordingly. He does most things on the GPU since he learned about compute shaders, however there are also ways to utilize the CPU efficiently. The rather newly introduced Burst Jobs in Unity for example. Not only are they a comparably easy (and completely safe) approach at multithreading, the speedups are also pretty ridiculous. We are talking in the regions of factor 10-50x speedup. Properly utilizing the CPU with burst jobs, plus the GPU with compute shaders, would definitely allow for a pretty darn complex simulation to run smoothly. How complex or how smooth exactly will depend on the hardware, as always.

@@Yamyatos Really it would not be that intensive. The eroded terrain would be baked. The bot code could be done with collision spheres triggering the code.

Im not an expert in programming but i think that that would be easy... you just need to program the sharks to avoid obstacles and catch the nearest boid (group of things) and program it to do at random time

Add shark hunger systems

Yeah but they went with the "leader" approach, which is not as realistic. Still, great stuff to watch

I wanted more of that end also, the stuff he makes is amazing.

Came to the comments looking for this... To make it look even more real just add a huge repulsive force whenever something big happens in the game like shooting or so...

As a person who makes their living writing software professionally, I feel the need to tell you that programming is more about solving logic puzzles than about having solid math skills.

Looks like a good candidate for VR.

Get Subnautica - it's awesome.

Something like this? media.giphy.com/media/2xEAuD1mqqjk7ul1Pp/giphy.gif Beyond Blue is an underwater exploration game releasing this year on PC, Xbox1, PS4, and on Apple Arcade, if all goes well :) Come follow us on twitter.com/BeyondBlueGame (I can't speak to the actual price, probably a bit more than $10 but less than full priced)

@@geoffcunningham6823 Yeah, but the simple graphics are really refreshing.

I think it is not about the code itself, but what he was coding. His starting point was a paper. His coding is beautiful, but the idea of coding a studied behavior is even better.

Because if your code is well written in the first place, adding new features can be just as simple as adding couple of lines

NOT to discredit Sebastian amazing work, but some of this is well documented code, he is adding his own flare for SURE. That's why its simple yet elegant its like taking 10 sebastians and making amazing code. He listed out some of their names. Including the original author of the Boids code. Almost like the author of Cellular life. IE the Game of Life, by Conway I think.

probably too much grovelling and not enough study

Sure, I get all of your comments. I'm a programmer myself, and we regularly code from papers (specially geometry stuff). But still, the fact that you can put < 50 LOC and get schools of fish freaking floating around your marching cubes terrain and avoiding your submarine... well, that's something else.

I may be off, but that is what his underwater scene was all about. Maybe your asking for a different technique.

@@micaiahstevens8840 As I recall the terrain in the underwater scene just comes from using marching cubes to render a surface on some 3d perlin noise. Erosion is a technique for modifying terrain using simulated weathering processes to generate features that you don't see in pure noise-derived terrain (like sharp mountain ridges and valleys)

Awesome thanks PKMartin. He did make an erosion video, but with meshes not voxels as well. NOT say I don't want more videos from Lague hehe!

And the natural selection simulation built into the fish boids.

WTF?! yesterday I was thinking exactly the same after watching those same videos. This would add another layer of realism to procedural planet generation. 🤤

@@leecaste I wholeheartedly agree! Though from the few papers I've read regarding that, it seems quite convoluted.

I did a Game Development study in Amsterdam and we covered most of these things (apart from the ecosystem). Next thing would be a particle-based fluid simulation. If you have an interest in this kind of topic you quickly find these fun challenges. He does go really in-depth into the topic which makes it really cool!

@@programereniscoolwhere to find these fun challenges

​@@tushargupta764 Unfortunately, school is a big factor. Teachers really think their courses through. You can look for it yourself. If you see something interesting try to make it yourself. I personally really like optimizing, rendering and voxels. So now I am building my own game framework in C using Vulkan and Octrees. If I learn something new I apply it to this playground. Now you got to decide for yourself and create time to do some fun things that keep you motivated. Why did you get into programming in the first place? What inspired you?

@@programereniscool What if someone wants to learn it all but can't go to programming school?

@@kaksspl You can always learn by just doing. The hard part is figuring out what to learn next and to stay updated. Personally, if you are really serious about it you can check out the Open Source Computer Science Degree (github.com/ForrestKnight/open-source-cs ). This page has a lot of different courses that you can follow or you can use it to find out what courses you should know more about. Hope this helps a little!

What I exactly feel :(

There is no linear scale of how "good" a programmer is. We're all made up of different strengths and weaknesses and tendencies. Sebastian has a very inquisitive and creative mind that drives him to dive deeper into lots of little aspects as many would and finding fun new experiments on the side. And he has(or rather takes) the luxury of having time and allowing himself to go off on tangents which often are rewarded with deeper understanding or snippets that can be used later or for something different or inspire a whole new project. I don't know what his job is or how much "professional" development he does but in some regards he might be considered a "bad" programmer. When he doesn't stick to a deadline, the scope get's bloated, maybe he has a difficult time concentrating on the task at hand, his code, while creative and doing what it should, may not fit well with others from a team or cohere to certain standards, might lack motivation when the project isn't challenging or interesting. There's just so many aspects and different coders are better suited for different tasks. Find your niche and strengths and decide if you really want to earn money with it or rather try to keep the passion alive as a hobby. Not that it's impossible to work on a passion project and make money with that but that's the holy grail of most professions or activities. Like right as I bought my first DJ equipment, I decided I never wanted to do that for money despite investing money into it. (actually DJed two weddings of family/friends, swearing never to do so again after both :D )

@@simonisenberg4516 I'm honestly saving this for when I need it, nicely explained!

this comment aged well

@@shifanahmed3990 indeed xD

Maybe you could loop through all nearby objects (using the spacial partitioning scheme shown in the video) and just calculate the distance and angle towards their center?

more intense than twice your existence

@@ThePC007 looping is pretty intensive, the less you can do the better. The best solution for performance is to calculate the raycast vectors at the start, so that you only ever have to calculate the directions once. Then, whenever a boid checks for a direction it's not doing all the turn fraction stuff and instead is just looping through an array of vectors. You can also adjust how many directions would be generated at the start if you wanted a less detailed obstacle avoidance, decreasing the amount each one would loop. The most performance intensive part other than calculating neighbours is actually iterating through each boid and applying their new movement vector.

@@bearwynn If you use the partitioning scheme the looping shouldn't be _that_ intensive and depending on how you store the coordinates of the boids (preferably in an array consisting of only the coordinates themselves (and not a pointer to their object or anything)), then you could loop through them with very few cache misses, which would make it pretty fast. Calculating their distance and angle should be fast as well, since (I believe) you could even drop the square root part of the distance formula entirely.

There aren't many optimizations if we want to keep using rays in a classic "does the ray hit the triangle" way. But in this case we don't really care about precise surface collisions, just a rough idea of whether or not e.g a random background fish is about to swim through a wall or something. So we can optimize this significantly by by precomputing a 3D grid or octree and simply marking a given cell as solid or empty. Now we only need see if a vector passes through any solid cells, which is much easier than looking for ray-triangle intersections. Of course, once we have a simple integer-aligned grid like this, we can make a bunch of additional assumptions and optimizations. But I'll leave this as an exercise for the reader.

It definitely wouldn't be faster using JobSystem. It spreads things on CPU Threads. There are far more on GPU. The rest of questions... I don't know :D

@@AramilAnakir Thanks for the answer.

The Job System is definitely easier than compute shaders. It's also extremely fast when using the Burst Compiler. Compute shaders still have the potential for much more performance, if done right. We're using the Jobs+Burst for the same thing (but not entities), and using compute shaders for occlusion and indirect instanced rendering. I've been wanting to move the Boid code as well but haven't had the time. Right now I can get 50k+ fish reliably, I'm temporarily blocked by some data copying (yeah, take time!) and a bug with the GPU sorting that limits me to 65k instances for now. Here's an example of how our game looks: media.giphy.com/media/2xEAuD1mqqjk7ul1Pp/giphy.gif Beyond Blue is an underwater exploration game releasing this year on PC, Xbox1, PS4, and on Apple Arcade, if all goes well :) Come follow us on twitter.com/BeyondBlueGame :)

@@noamweiss2244 Woah! Such a smooth transition between answering a question in comment to promoting your game. You clever.