I see these cool effects the devs are doing and I don't know how to go about making it. I know it requires attachments and beams but what is the math?
Example: https://gyazo.com/8c6058b1da08d04e120a90a18b1d825d
Edit: Well it first starts out by inserting two attachments into the HumanoidRootPart (Character) and inserting a beam into one of them. The HRP is considered to the base.
This effect is easiest to achieve with particleEmitters, rather than attachments.
I rotate an invisible block with the particleemitter attached. Play around with inheriting the velocity etc (settings of the particleEmitter).
Of course another way is to cframe actual particles, or better to make a rendered animation, but if you have to ask, I would probably go with my idea.