constant movement of a rigidbody with no gravity

Unity Engine
1

I want to get a rigidbody then apply a force to it that keeps at a constanst velocity ignoring gravity.

I have unchecked gravity on the rigidbody and placed it inside a box. Now I want to keep it going at a constant velocity so it bounces off the walls forever.

Any idea how? I thought maybe rigidbody.AddRelativeForce(transform.forward * 1.0, ForceMode.VelocityChange); but it doesn’t seem to work.

2

Add more force.

–Eric

3

Actually maybe this isn’t what I am trying to do.

Basically I want to try and make one of those classic brick and paddle games. Except I want the paddle to be spherical. I am trying to figure how to make the ball work.

4

Easy, Sounds like what you need is to turn both drag and angular drag to 0.

Find it under rigidbody in the inspector(where you turned “use gravity” off).

5

Then how do i start the ball moving? I tried just putting an addforce in the

6

AddRelativeForce is fine. As I said, just use more force; 1.0 isn’t much.

–Eric

7

you can just set the velocity on the rigidbody to get it moving

8

Thank you for the replies.

I figured how to do it using addforce. The reason it wasn’t working was because I was trying to add the force in Awake (just once to get it started). When I moved it to FixedUpdate it worked fine. I also added the bounce material to the floor.