Keeping an object above my right shoulder?

Hello all, last night I was trying to create a type of follow script that would keep an object above my right shoulder.
I was using the llSensoreRepeat function to track my pos then would have the object llSetPos(mypos + <2,0,2>. This updated frequently and did a fine job (imo) of getting the object to stay with me.

Problem is, since my offset added 2m to the x coord and 2 to the z coord it did a poor job of actually keeping the object over my "right" shoulder. In reality the position of the object was always dependent on which way I was facing. So sometimes it would be in front of me, or on my left, or even behind me if I was facing a different way.

Now I know there has to be a way to keep it off my right shoulder but I can't seem to find out how. And math not being my strong point....well you can see my problem.

Would anyone here be so kind as to recommend a solution?
Any thoughts/comments are appreciated.

your using a sensor to get your current pos right?

multiply your addin vector by the detected rotation.
ie
llSetPos(mypos + (<2,0,2>*llDetectedRot(me)) ).

omg is it really that easy? LOL

Thanks a ton Strife!

This doesn't seem to be working, did I overlook something?

vector vctOffsetPos = <2,0,2>;

sensor(integer total_number)
{
llSetPos(llDetectedPos(0) + (vctOffsetPos * llDetectedRot(0)));
}

Is it because llDetectedRot returns a rotation and I'm trying to multiply it with a vector?

How do you mean "not working?" Not compiling or not hovering over your left shoulder?

If it's not compiling, try:
llSetPos(llDetectedPos(0) + ( llDetectedRot(0) * vctOffsetPos));

If it compiles but is not working right, post your llSensorRepeat line (or the whole script).

multiplying a vector by a rotation results in the vector being rotated.

http://www.badgeometry.com/wiki/Rotation

Ah right, I can never remember which one (rotation x vector or vector x rotation) is the correct order.

If you know how to do a bullet, you know how to do this.

You can rez a bullet at a particlar offset from you. It can be made to face the same way your are.

Use that logic and a sensor to keep the object floating above your shoulder (sans velocity/physics)

It definitely works. The mHUDs for Terrain worked very much like this, except they didn't float over your shoulder, they floated over your head, which is just a matter of adjusting the offset to your sensed pos/rot. As it turns out, your "jaw" is pretty consistently found at .75 the AV height.

The terrain mHUDs use essentially reversed bullet logic. Sort of like pointing a bullet at yourself, but not firing the gun.

Good luck.

ok thanks guys, I've got the object to follow me on my right shoulder now.

Now I just gotta figure out a way to get it to face the same direction I am...:igh::

That's easy,
llSetRot(llDetectedRot(0));

If your object is constructed so that a rotation of zero isn't "forward", multiply llDetectedRot(0) by whatever rotation it takes to make it face forward.