sphere physics // forces only in x and z directions

Unity Engine
1

Hi everybody,

The following problem:
I have a plane on which several spheres are. Every sphere has a rigidbody and a sphere colider. They change randomly their scales between 5 and 7. Now i want to push them against each other and they should bounce on the plane but not in the y direction. Is that possible?

Thank you very much in advance!

2

How can they “bounce”? I presume you are speaking of reflecting their trajectory on a plane? If so I think that you should scale randomly by increments, maybe using Lerp and let the physics engine take care of placement in the LateUpdate.

HTH

3

what is the effect of just running them into each other?
is there a bounce in the Y?
if so, perhaps just set the Y of the objects to 0 in Update() ? (if your level is flat?)

4

I think he’s aiming for Little Big Planet-like physics, which only operate in 2d, but the game itself is 3D.

My idea would also be to lock the Y axis of your objects on the Update() loop, like Saeblundr said.

Cheers