Tutorial | Animated braids ponytail made with the RigidBody node and physics in Unreal Engine 4.25.4

[@TorQueMoD]

This is a great video, thank you.There are some issues I noticed though... Box collision is more expensive and not necessary for a ponytail. You should use capsules instead. Also, setting Collision Enabled on physics actors is how you tell them to collide with each other, and not necessary. What you should do instead is select each ponytail body inidivually and enable collision with the character's back and shoulder physics bodies. IE Select one ponytail body and all the back bodies and enable, then repeat for each ponytail body. This will ensure they aren't colliding with each other unnecessarily, but still collide with the back.

[@hisashikaneko3594]

Thank you so much for the detailed explanation! It really helps me and the viewers a lot. I truly appreciate it.

[@epicdoggames9667]

THANK YOU SO MUCH. Exactly what I was looking for.

[@hisashikaneko3594]

You're welcome :D

[@epicdoggames9667]

As a sign of my appreciation for the time you took to make the video, I went ahead and purchased your character. Happy Holidays!!!

[@hisashikaneko3594]

@@epicdoggames9667 Thank you so much for your purchase!!! If you have any questions or require further assistance, please feel free to contact me at any time. You made my day! I truly appreciate it. Happy Holidays :D

[@chickishot8172]

Thank you so much!!!! Finally a tutorial that works for my hair. Edit: It did get my hair to move but my hair is jittering and constantly twisting itself unnaturally.

[@hisashikaneko3594]

My pleasure 🙂 As I mentioned in another comment, while I'm using Rigidbody, sometimes I can see a weird effect like jittering. Changing the type of bodies, settings, and alpha value in the Rigdbody node solves the issue most of the time. Alternatively, you can use a cloth sim for hair. Hope it helps!

[@chickishot8172]

@@hisashikaneko3594 I tried changing some settings in the rigid node in the animBP but it didn’t help. I can’t use cloth to simulate it instead because I get the degenerate triangles error. My hair does have bones but it’s more complex than a single ponytail strand of bones. Is it possible the collision is interacting with each other so that might cause the jittering? I have no idea how to fix the twisting part though. Not sure what you mean about changing the bodies though.

[@hisashikaneko3594]

​@@chickishot8172 ​ @chick ishot I guess it could be easily messed up when you have more complex bones. Yes, the collision will behave that way. You can clean up the triangulated meshes for example in blender when you get the error. Tweaking the values in Angular Limits as I did in the vid(2:25) might solve the issues. But I highly recommend simplifying bones. I mean you can change the type of bodies as I did in the vid(0:38). Unfortunately, this method will only work for a ponytail. If you had lots of hair strips and bones, it would be very hard to get them working. Hope this helps. Good luck with your project.

[@mateomiranda4211]

ÉPIC!!!!!!

[@hisashikaneko3594]

Glad you like it :D

[@Romeo615Videos]

how can i catch up with you i need some hair stuff for ue5

[@hisashikaneko3594]

Thanks for your comment. I haven't installed ue5 on my PC yet. I'm working on a new character and gonna test it in ue5 when it's finished. I believe that this rigid body method will work in ue5 as well. Here are my characters on cgtrader www.cgtrader.com/techykitty I hope you like it. Thanks!

[@yarosyari3516]

when I stop character movement and wait the physics is slept, then start running again, my mesh is stretching near stop position, how to fix it?

[@hisashikaneko3594]

Hmm... I have no idea. As I mentioned in another comment, while using Rigidbody, sometimes I can see a weird effect. Changing the primitive type of bodies, limits settings in the detail panel, and alpha value in the Rigdbody node may solve the issue. Good luck with your project.

[@arvingarousinezhad6826]

Hi there. Thank you for the video. I'm doing exactly like you showed but the bones move like crazy when I play the level. it's like there are some forces pushing the bones and constantly increasing. Do you have any ideas? In fact I want to animate a cape and I want it to be dynamic while reading the base movements from my animation. that's how I end up watching your video. it seems I have to use Rigidbody anyway but it's like Rigidbody does not work properly. I'm new to Unreal so I appreciate any help

[@hisashikaneko3594]

Hi there. Thanks for your comment. For a cape, I would recommend using the Clothing Tool ( cloth simulation system ). I haven't offered a tut video for it yet, but there are lots of nice ones here on YT. While I'm using Rigidbody, sometimes I can see a weird effect like jittering. Changing the type of bodies, settings, and alpha value in the Rigdbody node solves the issue most of the time. Hope it helps!

[@arvingarousinezhad6826]

@@hisashikaneko3594 I'll try it. Thank you again \m/

[@arvingarousinezhad6826]

@@hisashikaneko3594 Another question. Did you apply clothing data to your character's hair or it's just working by simulating the bodies on physic asset? I mean for getting results should I use both simulation and clothing data together?

[@hisashikaneko3594]

@@arvingarousinezhad6826The braided ponytail has been simulated by using only the RigidBody node as you can see in the vid. Consider braids as harder surfaces than normal hair. whereas normal hair or a cape is a soft surface. Most people use cloth sim for hair and clothing. I wouldn't recommend using both simultaneously, it could easily mess up. Hope it helps!

[@arvingarousinezhad6826]

@@hisashikaneko3594 Great. Thanks a lot for your help!