Getting local velocity

Was trying to determine whether my car was going forward or back, so naturally turned to the wiki. Re-use is king

Under llGetVel, the following example is given:

vector global_velocity = llGetVel();
vector local_velocity = global_velocity * llGetRot();

This gave me nonsense results - at some angles it would report a negative x velocity when it should have been positive, and vice versa - but changing the multiply to a divide gave me results that work reliably (for me at least).

Now all I have to do is stop the car sinking into the road every time I cross a sim border, bring world peace, stop global warming and then home for tea

(ps. I've commented but not edited the wiki - case anyone knows better than me how/why this works)

Strange... llGetVel() * llGetRot() should get you the local velocity. Perhaps it was the variable assignment that was causing a small amount of lag, and thus problems.

Dont think lag was to blame...
Considering that it was a car where almost all motion is in x, the original (with the multiply) gave results with large y components to the velocity, and x components that varied in sign. The revised version gives only small y components (as would be expected when turning), and x components that seem reasonable for the car motion.

Has anyone else tested this?

ps If I have the time, Ill happily demo this to anyone who thinks they might be able to solve it I should be online in a few hours time

vector local_velocity = llGetVel() / llGetRootRotation();