Bolt Tutorial - Game AI for Creatures in Unity [Simple State Machines]

[@HomeMech]

Hi everyone! I have a brand-new AI course on Udemy: www.udemy.com/course/visual-scripting-with-unity

[@liormax]

this is the best frog tutorial I've seen in my entire life, and I wasn't even looking for it

[@lee1davis1]

Wow this helped me solve a big problem I was having in my Deer and wolf behavior. Thanks.

[@elgatorabioso]

Amazing tutorial! you put so much work into it! tanks

[@SnailSpaceWTF]

Great video, and I love your style. Thank you for being.

[@HomeMech]

Aw, that's so nice to hear, thank you! :3

[@phillipwebb1104]

Awesome video. Would this work for a 2D top down game too?

[@HomeMech]

Yes! It will totally work. After you work with it a bit you may want to check out 2D rotation tutorials in C#, I bet you'll understand what to tweak from there even if you can't code. The frog is moving forward from the animation alone so that might be something different with your 2D sprite. I'd suggest using DOTween for that 🐸

[@Orhime101]

Great tutorial! I love your videos, I appreciate the time you took to make this thank you

[@HomeMech]

Thanks Robin! :D

[@ashishitD]

1 critique............plz use root motion for da character.....i know u know root motion cause frog has root motion applied to it......other dan dat......video is awesome and informative

[@HomeMech]

Thank you!! I just realized I didn't pin my comment about this, so I went ahead and did that.

[@stigmamax9996]

what happens if the frog meets a tree with a collider?

[@HomeMech]

I believe the animation will override the physics. You'll want to give your frog sight with a raycast to avoid obstacles. 👀🐸There is an animate with physics option here you can try turning on: docs.unity3d.com/Manual/class-Animation.html

[@mdaltaf5020]

Can you please make a third person controller tutorial using bolt

[@HomeMech]

Hi! Thanks for the suggestion. I'll think about it! Btw if you follow the VS and C# tutorials you should be able to figure out most C# tutorials.

[@ernestgongora4395]

Can I use this with other animals such as a deer or wolf?

[@HomeMech]

Yes, this will be a good foundation for other animals. A deer, like the frog, moves fast and turns abruptly. Otherwise, for the slerp, you'll want to do a lower number for the T value (try a Per Second node) and run the ticking part of a timer into the flow so that the rotation is gradual.

[@stigmamax9996]

I don't use Bolt but Playmaker. Can I use both in my project?

[@HomeMech]

Yes, you can use visual scripting and Playmaker. Visual scripting can probably communicate with Playmaker too.

[@HomeMech]

Tip #1: If your frog isn't moving, look at the Animator component and toggle "Apply Root Motion." This enables the animations to move the rigidbody. More here: docs.unity3d.com/Manual/RootMotion.html Tip #2: If you are on 2021 the graphs might not come in, go into Project Settings > VisualScripting and "Fix Missing Scripts." Let me know if you have any issues!

[@Phoenix_Core]

are you actually in MN? We should meet up if you are.

[@Rokyloreq]

Can you make this but in c#

[@HomeMech]

I have a free game kit on the asset store that has C# state machine AI and much more: kzbin.info/www/bejne/opO4h42HnMuFe6c

[@ernestgongora4395]

Can you make a video like this one but this time making the frog move at random like a wandering AI?

[@HomeMech]

Check the archived Bolt Videos on Unity Learn: learn.unity.com/tutorial/bolt-videos-archived#5ee0b1feedbc2a002072770c the beginning of the third one down will help you with that

[@oilbaggcomedy1058]

Wish you showed how u started

[@HomeMech]

I included the project package, let me know if you have any trouble with it!

[@GameDevRepublic]

Great tutorial.

[@GukoSS8]

wow this is really cool thanks man :)

[@HomeMech]

Thanks Salem! Let me know if there's something you'd like your creatures to do next ;)

[@bguilleminot]

Hi, followed the steps but when I play the game the frog wont move, it runs the animations but static in a place, and runs the animations looping without considering the player's distance. I wonder what I would have done wrong

[@HomeMech]

It could be a lot of things. Are you using any different assets from what is in the package?

[@bguilleminot]

@@HomeMech thanks for answering, I am using the frogs but using other assets. The player is one I've created myself, I tried to do this in a test project (I didn't created a specific project to do this tutotial)

[@HomeMech]

@@bguilleminot Start with the package and assets I've given you. I make them to reduce all the things that could go wrong. Then try doing your own thing. If it doesn't work, you can compare it with what I've given you and see if you can spot what is different. It does seem like you don't have the right player object in the frog's player variable, around 5:20

[@bguilleminot]

@@HomeMech Hi again, I did as you said, I created a new project and used the same assets, sadly the problem continues. The frog reacts when I approach to it, starts jumping fast but it doesn't move, it stays static in the same place jumping (the rotations work well though). When I move away the player the frog jumps slower but never returns to idle state. I've checked the graph many times comparing with the video but I can't see any mistakes, so don't know what could happen

[@HomeMech]

@@bguilleminot K, thank you, that rules out a lot of variables. I was able to get it to work with my package and the included completed graph (following the Read Me steps). That's good news for me :) First, check that in the transition from Evading to Resting that the branch flow is False to trigger transition (the transitions are slightly different, Resting to Evading happens on True). If ever you want to test whether something is working, search for a "debug log" unit. Then get a "string literal" unit and put it into the message input. There you can type "Frog is safe!" and see that message in the Console window (Window>General>Console). If no message occurs, you are close to finding your issue. Since your frog isn't moving, could you check to see if "Apply Root Motion" is enabled on the frog? It is on the frog, on the Animator component below Controller and Avatar. This enables the frog animations to move the rigidbody on the frog.

[@workflowinmind]

100th Like ! Thanks for this video.

[@HomeMech]

100th time I get to feel cool, thank you! :D

[@MrZero000cool]

thanks so much!

[@HomeMech]

My pleasure! Hope you figured out the day/night cycle :D Feel free to say hi on Discord if you had any trouble (@homemech#7937)

[@MrZero000cool]

@@HomeMech

[@ppmpyae1152]

Love it.

[@its_puzzled]

it would be so good if you expand the part with visual scripting, that is important and small size cause this frog is not important at all and just take a space here, it makes so uncomfortable to see the video from usual display and not something like 4k, well may be you just dont care about someone who have no 4k display then it allright could nt see/read anything, went to another videos on youtube, pity true, it was interesting to know frog story

[@HomeMech]

Ah, thanks for telling me. Actually, the graph is zoomed in as much as possible, so in the future if I do another UVS video I'll record at a higher resolution so I can zoom in closer without a loss of resolution for normal HD.

[@blatou12]

Very Good tutorial, but I felt lost in one thing, how do I make the frog hop further away? I have altered his size and that made him jump further but I don't know how to do it without messing with his size...

[@HomeMech]

Thank you! The frog's movement comes from "root motion," the animation drives the movement. You can look this up in the Unity docs. The easiest way to increase the distance of the hop would be to duplicate the jump animation so that you have an editable version and then try to increase the hop distance on the animation.

[@djakademiksschool7793]

more more moreeeeeeeeeeeeeeeeeeeeeeee

[@HomeMech]

Coming right up! Next week probably :D

[@snootsy31]

who else came from the toxic frogs unity asset page

[@HomeMech]

My first toxic comment :D