View Full Version : Sticky Surface Glitch

12-21-2011, 05:34 AM
Hi All,

I am using the motion modifiers sticky and sticky surface to animate a car travelling over some terrain but I'm having some issues with the car randomly flipping in Y making it travel on the underside of the mesh on random frames.

The strange thing is that the flipping happens at different frames everytime I play the animation or scrub the timeline...and sometimes there is no flipping.

I need to bake a clean animation and its a bit of a lottery what I'll get right now.

Is there any way i can improve things to avoid the flipping?

(I've already tried increasing the poly density on the ground mesh to reduce the amount of 'guessing' that lightwave has to do to calculate the path...but that didnt help).


12-21-2011, 08:13 AM
It turns out that if you have non-planar polys in the terrain mesh, it causes the flipping.

I triangulated the mesh and that seems to have fixed things.

12-21-2011, 09:35 AM
That's cool to know Simon, thanks for the info :thumbsup: