Rotating towards the player on 2 axis

[Ixia]

Hi

Hitting my head against a wall with this... can't seem to figure out how to do it.

I want and object to slowly point towards the player (preferably set-able as x degrees per loop)

Now but I only want it to rotate on global/world z axis and local y axis :D Can't seem to get it to that :/

[Void Singer]

I hate to tell you, but two axis represent all possible facings (just not all orientations).

the function you can try are
llLookat
llRot2Target with llRotTarget, at_rot_target, and not_at_rot_target

and try them in combination with
llSetStatus( STATUS_ROTATE_X, FALSE );

[Ixia]

I want it non-physical and with llSetRot / llSetLinkPrimitiveParamFast

And what do you mean with that two axis represent all possible facings, but not all orientations?

I tried around with llRotBetween but no idea how ot apply the result i guess

[Innula Zenovka]

I am not sure I understand exactly what you want to do, but you might find this little tutorial by Chalice Yao over at SLU helpful.   Even if it's not what you're trying to do, it's still worth a read -- it was her walkthrough that got me on the road to  understanding how to use llRotBetween.

[Void Singer]

for setRot models, if you set the z rotation, then they rotation you shouldn't need to limit anything.

what might help you is SLERP... forget about what the name says or how it works, just know that if you plug in the starting rotation, and the ending rotation, that the number you stick in with them will be the fraction of movement between those two rotations.

it essentially works out to  (a + (1/t )(b-a)), where a=startRot, b=endRot, t=steps between

if a is where you are at when you begin, and b is where you want to be when you end, then the result can be added t times to the current rotation to get from start to end.

[Ixia]

 

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Innula Zenovka wrote:

I am not sure I understand exactly what you want to do, but you might find this

little tutorial by Chalice Yao

over at SLU helpful.   Even if it's not what you're trying to do, it's still worth a read -- it was her walkthrough that got me on the road to  understanding how to use llRotBetween.

---

 

ah, that was what I needed thanks

Will have to see how to make it slower, but thats the easy part I guess

 

@Void Singer: Well SLERP works too i guess, but since its fractions of the rotation i can't say "rotate towards this but max 2 degress per loop"

[Innula Zenovka]

Glad it helped.  I think if you want to control the speed, llRotLookAt might be what you want (it works on both physical and non-physical objects) and, as I only discovered the other day, with Void's help, you can just use the formulae Chalice gives there to get the rotations you need for the rotation "target" in llRotLookAt.   Certainly worth a play.

[Void Singer]

SLERP only returns the rotation you want, the rate control would be up to you, but you could easily say I want it to take x seconds to go from a to b, then you your preferred number of steps to as a divisor for the time as well as the step number for SLERP. assuming you still want discrete stepped movement.