Exclude Particle Forces from Objects?

[entry-newspaper]

Hi!

I have a simple scene (attached) whereby I have a simulation of a ball bouncing on a floor.
Secondarily, I used a vertex map to drive some particles, emitting from where the ball impacts.
However, the forces / effects I wish to apply to the particles are also affecting the ball simulation; which I don't want.
How does one go about excluding or separating forces, in a project like this?

Thanks!

ball bounce test.c4d

[Dr. Sassi]

Hi entry-newspaper,

Thanks for the scene file.

You can use a Simulation Scene to "isolate" the setup
https://help.maxon.net/c4d/2025/en-us/Default.htm#html/OPBDSCENE.html#PLUGIN_CMD_1057221

or

Drag all the Forces that should not affect the Rigid Body in the Force Tab> Mode: Exclude. (Note that only one option can be used; include or exclude.)
https://help.maxon.net/c4d/2025/en-us/Default.htm#html/TRIGIDBODY-RIGIDBODY_PBD_FORCES_GROUP.html#RIGIDBODY_PBD_FORCES_INEXMODE

I tested both in 2025.1.3, as things might change, and both work.

All the best

[entry-newspaper]

Great, thanks. I'll test those options, further. I initally did try to employ the Simulation Scene, because it seemed logical. But for some reason, my results still seemed off. But I'm sure it's because I was just rushing to test things, and didn't pay close enough attention.

[Dr. Sassi]

Thanks for the reply, entry-newspaper,

Let me know how it goes.

Enjoy your weekend