Library: Basic Pet Script (Follow/Face Owner)

I'm tempted to use some of my older scripting tricks to make Pet v2.0. There's a way to make a follower without sensors, if you're willing to wear an attachment. There's also some scripting tricks that allow you to cascade the same for a follower trail.

That should just be a matter of offset.

Sounds interesting Alfred...could also be used for an object to call an animal at a certain time, or when an event is triggered through that object. I'd be interested in seeing your bag of tricks for that.

. . . to ask about it (and perhaps about scripts in general).
I tried this out last night in SL: created a simple object, gave it this follower script.

Now here's the rookie question:
I was at a loss as to how to get the object to follow my avatar. Do I have my avatar touch it, attach it, take it? Enter my avatar's name somewhere in the script [e.g., enter it within the parentheses of "llGetOwner();"]

It must be something simple but I am stumped.

Thanks to anyone that can educate me.

Looking back through this thread . . . am curious about Alfred's idea to make a pet by means of attachment. Can you enlighten me?

The only thing that comes to mind is attaching something with a llSay or the like and a pet that hears it. Is there another way that is not coming to this mind?

I am thinking of doing something like a cart or a wagon . . . would be nice if it ALWAYS remained with its avatar, but did not bob up and down, instead remaining on the ground.

Thanks for any help,
Baron

I would think the wagon would be accomplished using some variations of setting up the script as a ground vehicle.

I'm still very much a newbie at scripts and couldn't create one to do much of anything more complicated than a llsittarget() for extra vehicle seats, but I've had to adjust quite a few to get my desired results on vehicle behavior, and I wouldn't think it should be too much more complicated than that except that instead of taking your controls, it just uses the sensors to dictate how it moves.

Is there a way to make a follower without making physics? With the new Flexi prims I can't seem to get it to follow..

Thanks in advance.

Is there a way to make the script work without making the pet physical?

Im really enjoying this script. I made a flock of birds fly behind me in a neat little pattern. When I sit on one of the birds I looks as if they were carrying me off!

This is a weird request but does anyone have a script that makes pets attack others? In a harmless way of course. Or anyscript that can be used for pets to make them do something.

I have been scripting for a whole day so far, I have been playing with this script and wondered exactly the same thing as you, why my object rotated when I added the script. I looked up "llLookAt" in the functions library and it said this "Causes the object to point the up (Z) axis toward target". That was my problem, I wanted the x axis to point to the target. So I read a bit further and saw that by changing the llLookAt line to llRotLookAt, there is an example here http://secondlife.com/badgeo/wakka.php?wakka=llLookAt my object was pointing the right way.

Well, here's how to calculate a rotation you can use with 'llSetRot()' or 'llRotLookAt()' in order to point your x-axis in a given direction and keep your z-axis oriented in an, "upward," direction:

rotation lookDirToRot(vetor lookDir)
{
   vector localX = llVecNorm(lookDir);
   vector localY = llVecNorm(<0, 0, 1.0> % lookDir);
   vector localZ = localX % localY;

   return llAxes2Rot(localX, localY, localZ);
}

I've been trying for days to accomplish something like this without success, i wanted to try to crack it for my own learning but, im going round and round in the kind of circles im trying to create.

I'm trying to make R2D2 from Star Wars as realistic as possible, i spent a long time trying to get the head to rotate around its own z axis but eventually gave up in favour of a texture animation (although i'd much prefer the former) since the head piece has a couple more prims which would also need to reposition themselves in the rotation, i think... theres no way to get around this is there??? since we dont have hierarchical linking....

so ive spent three days now trying to get him to tilt up slightly on moving start and tilt back down again on moving end, the root prim is his main body so i've tried to apply the ideas in this thread to get him to look slightly up and then then slightly down but to no avail, ive tried all manner of quaternion to eulers and back agains, every time the result is the same, i have managed to get him to tilt in the right way (regardless of his current global rotation) but when i try and restore the original looking , he goes awry.



any help would be much appreciated.

I've been trying for days to accomplish something like this without success, i wanted to try to crack it for my own learning but, im going round and round in the kind of circles im trying to create.

I'm trying to make R2D2 from Star Wars as realistic as possible, i spent a long time trying to get the head to rotate around its own z axis but eventually gave up in favour of a texture animation (although i'd much prefer the former) since the head piece has a couple more prims which would also need to reposition themselves in the rotation, i think... theres no way to get around this is there??? since we dont have hierarchical linking....

so ive spent three days now trying to get him to tilt up slightly on moving start and tilt back down again on moving end, the root prim is his main body so i've tried to apply the ideas in this thread to get him to look slightly up and then then slightly down but to no avail, ive tried all manner of quaternion to eulers and back agains, every time the result is the same, i have managed to get him to tilt in the right way (regardless of his current global rotation) but when i try and restore the original looking , he goes awry.



any help would be much appreciated.

Im trying to make R2's little tilt as he starts moving and return to the original position when he stops, i cant get it too work independantly of his root rotation.

this is how far ive got, after three days of brainache,

walktilt()
{
llInstantMessage(llGetOwner(), "walktilt";
rotation currentRot = llGetRot();
vector targetrot = llRot2Euler(currentRot);
vector targetrotto = targetrot+<0.0,2.0,0.0>;
targetrotto*=DEG_TO_RAD;
rotation targetrotoutput = llEuler2Rot(targetrotto);
llRotLookAt(targetrotoutput,1.0,5.0);
}

i've just noticed llAxisAngle2Rot and i'm sure i need something like that in there somewhere.

this is my first encounter with programming and certainly with quaternions, im going round and round in circles that i'd never be able to describe in eulers let alone anything else.

any help much appreciated

I made a cute one... thank you!!

I encountered a bull dog in SL that would attack visitors to his owners land, it would bump into you and even push your avatar around. I think I saw it for sale on SL Exchange.

I have a Black Panther that does the same thing. It has a drop down menu that allows you to select which avatar you want to attack.

ok after reading it and trying it came to the conclusion that if i dont want it to bob up and down that the following works just fine assuming the root prim is at (0.00,0.00,0.00)

default
{
        state_entry()
    {
        llSetStatus(STATUS_ROTATE_Z,TRUE);//alows object to turn
        llSetStatus(STATUS_PHYSICS,TRUE);//allows object to move (not necessary as long as object is physical)
        rotation rot = llGetRot();//gets rotation
        vector pos = llGetPos();//gets position 
        key id = llGetOwner();//defigns object target
        llSensorRepeat("",id,AGENT,20,2*PI,.4);//(string name, key id, integer type, float range, float arc, float rate);
        }

        sensor(integer total_number)
    {
        rotation rot = llDetectedRot(0);//sets rotation to value in llGetRot
        vector pos = llDetectedPos(0);//sets position to value in llGetPos
        vector offset =< 1.00,1.00,0.00>;//sets offset ie. keeps object from bumping into you assuming its solid
        llMoveToTarget(pos+=offset,0.2);//makes object move into position defigned byllDetectedPos + offset
        llRotLookAt(rot, 2.0, 0.3);//makes object face rotation defigned by llDetectedRot
        }        
}

feal free to remove all the // stuff if its to confusing

Would it be possible, instead of an object (pet) following an avatar, to have avatar 1 to follow avatar 2 (leader)? What would be required? Any hints in the right direction would be appreciated.

I can see many applications.

If you're going shopping with a friend, you can just let your friend lead, and you can follow without controlling the movement.

If you're in a role playing game, the party member can follow the party leader.

And so on.

I would like to know if, and how, this script can be modified so that an object will follow any avatar that passes near to it, rather than being specific to the owner.

use the sensor function to find the key to the nearest agent rather than using the owners key and have the pet follow that key

http://www.lslwiki.net/lslwiki/wakka.php?wakka=TutorialRobotics

has a really useful tutorial on autonomous objects. In particular you might want to check out Anorca Calamari's robot script as it uses a sensor to find agents within 50m or more.

Alternatively there is a script that creates a hopping physical creature that also uses a sensor to find avatars and move towards it.