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### #ActualSelenaut

Posted 27 January 2013 - 04:51 PM

My difficulty wasn't in finding the normal of the slope, I can do that in my sleep - my problem was apparently failing to know what a dot product was. Heh...

Thanks for the equation - maybe it'll also fix the bug I'm having with my bounce equation (a ball with a restitution of 0.95 fails to decrease bouncing height enough to where I can safely stop it without having to wait for-freaking-ever).

EDIT: I got the equation working, but my bounce bug still remains, but it now applies to sliding as well (Hurray, moths in the machine). Basically what's happening is that no matter what restitution value (between 0 & 1, obviously) I give the object, it simply keeps bouncing. For ever. And never stops. So should I apply a friction force as well? (I think what's happening is that, since the amount the object bounces is (restitution)^(num of bounces), it simply begins to level out and become more difficult to bounce noticeably less.)

### #2Selenaut

Posted 27 January 2013 - 04:51 PM

My difficulty wasn't in finding the normal of the slope, I can do that in my sleep - my problem was apparently failing to know what a dot product was. Heh...

Thanks for the equation - maybe it'll also fix the bug I'm having with my bounce equation (a ball with a restitution of 0.95 fails to decrease bouncing height enough to where I can safely stop it without having to wait for-freaking-ever).

EDIT: I got the equation working, but my bounce bug still remains, but it now applies to sliding as well (Hurray, moths in the machine). Basically what's happening is that no matter what restitution value (between 0 & 1, obviously) I give the object, it simply keeps bouncing. For ever. And never stops. So should I apply a friction force as well? (I think what's happening is that, since the amount the object bounces is (restitution)^(num of bounces), it simply begins to level out and become more difficult to bounce noticeably less.)

### #1Selenaut

Posted 27 January 2013 - 04:17 PM