Making an object point towards another AND move in that direction

[Iva Rhapsody]

I am trying to cause a linkset to point at a target object and then go to it..I was able to get it to point properly using

Point2Object( key UUID )
{
        vector a = llList2Vector(llGetObjectDetails(UUID, ([OBJECT_POS])),0);
        llSetRot(llRotBetween(<0,0,-1>,llVecNorm(a - llGetPos())));    
}

which worked fine, then I added code using llMoveToTarget, it moves towards the target just fine but doing this defeats the point @ function above for some reason..it's orientation stays the same regardless of the targets position.

 

state fly
{
    state_entry()
    {
        Point2Object( target );
        llMoveToTarget(target_pos,0.4);
        llSetTimerEvent(.1);
    }
    timer()
    {
        animate();
        Point2Object( target );
    }
    
    at_target(integer tnum, vector targetpos, vector ourpos)
    {
        llTargetRemove( target_id );
        GetTarget();
        state hover;
    }   
}

 Any ideas ?

 

[Innula Zenovka]

Without knowing what's in the animate() code it's difficult to say for sure, but I suspect part of the problem may be that llSetRot() doesn't work with physical objects, which the object must be for llMoveToTarget to do anything.

Try with llRotLookAt instead.

[Dora Gustafson]

Instead of llSetRot() you can use llLookAt()
It will keep looking while you move.

Bare in mind that llLookAt() points the Z-axis at the target:smileyhappy:

[Rolig Loon]

llRotLookAt works fine in that situation. See this thread, in which I asked the same question last month.  BTW, for those who answered then, my floater is doing very nicely. >>> https://marketplace.secondlife.com/p/Squirting-Seal-Pool-Toy/2523899   Thank you.  :smileywink:  

[Iva Rhapsody]

:smileyhappy: Thanks that did the trick, now if i can just figure out why it keeps turning on it's side I'll have it made lol

[Innula Zenovka]

Try something like

	vector a = llList2Vector(llGetObjectDetails(UUID, ([OBJECT_POS])),0);		vector pos = llGetPos();		llRotLookAt(llRotBetween(<0,0,-1>,llVecNorm(<a.x,a.y,pos.z> - pos)));

 which should have it swivel round left to right, and back, on its z axis, while staying upright.

[Rolig Loon]

Be sure to use llSetStatus(STATUS_ROTATE_X | STATUS_ROTATE_Y,FALSE);

[Iva Rhapsody]

Thanx everyone I have everything working just fine, but I want to mention that despite what others may say..size DOES matter.

 

I rebuilt my dragonflies orienting all prims x forward and z up and incorporated your suggestions and viola!, however when i used the same link set as a template, simply resizing a few prims, dropping in different sculpt textures and retexturing to make my butterflies they refused to turn to point at the target, after trying everything I could think of i stretched the linkset a bit & it worked!..I then dropped my skirt resizer into the root and nudged it up step by step till the script would function properly..I suspect there is a physics engine limit to the smallest prim you can incorporate into the set so if all else fails you may have to bump up the size or use nanoprims since I'm sure it's the size of the bounding box, not the sculpted prims apparent size that counts.

anyway my butterflies are slightly larger than life, but what isn't in sl lol.

 

Thanks again

[Dora Gustafson]

You should make a note about this in the SecondLife Wiki
It could save a lot of work for others:smileyhappy: