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vector
11-08-2013, 06:34 AM
Hi.

I need a few stones falling with an uniform velocity without acceleration using bullet. Is possible to get a uniform velocity from the beginning?

starbase1
11-08-2013, 07:03 AM
Yes.

Turn gravity down to zero.
Set up the initial motions via key frames, using frames near the start, e.g. frame 1 y=10, frame 5 y=8.
Set the object dynamics to work from last key frame, and it will pick up the motion at frame 5 and continue it.

vector
11-08-2013, 11:21 AM
So logical... It works perfectly, thank you. The only thing is that when the stones hit I use a envelope to switch gravity to - 9.8 to get them falling down

starbase1
11-08-2013, 12:30 PM
You're welcome - I've just started learning this physics stuff myself!

Very much at the mucking about stage, but if there's any interest I can share scene files here...
Nick