Moving an avi with a moving child!

[conrad Evanier]

Hi all im moving a child prim with  llSetLinkPrimitiveParams(LINK_THIS,[PRIM_POSITION,llGetLocalPos() + <0,0,1>]); and then back again, how do i get my avi to move with the prim while seated as at the mo he just stays at the first position. I know how to get the key of seated avi but stuck on moving him lol.

[Darkie Minotaur]

You got to update the Sit Target - you'll find an example in the wiki here 

[conrad Evanier]

ah thanks Darkie il take a look

[Qie Niangao]

That example works, but the specific part about updating the llSitTarget is kind of optional here, if I understand the OP. Assuming the objective is to simply move the avatar around with the other child prim, simply applying llSetLinkPrimitiveParamsFast() to the link corresponding to the avatar should be all that's needed.  Indeed, all this works fine with no sit targets anywhere in the linkset (which can help if there are to be more people sitting than there are separate prims in the linkset).

[Rolig Loon]

Exactly, Your avatar is the last link in the linkset, so you can move it around the same way you move any other child prim...

llSetLinkPrimitiveParamsFast( llGetNumberOfPrims(), [ PRIM_POS_LOCAL, Old_prim_pos_local + offset *llGetRot() ]);

[Innula Zenovka]

I'm not sure if it amounts to the same thing or not (I don't think it does, actually), and I suppose it partly depends on exactly how you want to move the avatar, but I think the way I'd do it is something like

integer n = llGetNumberOfPrims();		vector offset = <1.0,0.0,0.0>;		list l = llGetLinkPrimitiveParams(n,[PRIM_POS_LOCAL,PRIM_ROT_LOCAL]);		vector pos = llList2Vector(l,0);		rotation rot = llList2Rot(l,1);		llSetLinkPrimitiveParamsFast(n,[PRIM_POS_LOCAL,pos+offset*rot]);

 Isn't llGetRot() going to move you relative to the object's rotation rather than yours?  

[Rolig Loon]

You're right, Innula.  I was visualizing the geometry in my head before breakfast.  It should be multiplied by the local rotation of the child rather than the rotation of the root.  Thanks.

[conrad Evanier]

Thanks Innula that works great, but think il stick with the sit target update as i have lots of child prims that will all be seats moving up and down so that fits the bill.  Both work a treat a slight delay when the child moves and the avi but not to bad.  Thank you all for your ideas