Frictional Games Forum (read-only)

I have a rain particle to make it look as though it's raining outside a window, but the rain is going through the ceiling of another room in the building. I can't simply move the particle because it's positioned perfectly at the window... is there a way to stop the particle going through the ceiling (which is a primitive)?

No I don't think you can add collisions to them.
The rain particle is really huge in radius, so if you want to, you can edit it to be smaller for yourself.

No, you cannot.

So there are 2 solutions:

Move it up, so that it doesn't collide with what's below it.
or
As Mudbill said, create one yourself.