I have a quick question about the rigidBody component.

I understand that if you have a gameobject that's designed to move, it's usually a good idea to add a rigidbody component to it. However, if the said gameobject has no colider components would it still need rigidbody?

thanks.

 

Rigidbody is ONLY used for physics, nothing else. If you want your object to act with physics, then it needs a rigidbody and a proper collider.

However if you're moving your objects manually then don't even bother putting a rigidbody, as it will use up performance for no reason.

 

Yea I thought that was the case. Thanks

 

There are exactly two use cases for ridgidbody.

Collider + Any Movement = rigidbody
Any physics movement = rigidbody

Don't use the component otherwise.

 

And third use case:
Need to get collision info = rigidbody (kinematic)