question using llVolumeDetect to change Particle System parameters

Hello, I'm a below-average scripter who's returning from a few months away from SL, so i forgot everything.

Im trying to make an object that emits one particle pattern when resting, and then switches to a different pattern when collided. I'm using llVolumeDetect, and have been able to make the particle system change from one to the other upon detection, but I would like it to return to the original particle pattern when its no longer "in focus".

i made two particle objects called fire_big and fire_small. I figure i need to put some kind of if/then/else/maybe clause?

Thanks for any help.
-Court

default {
state_entry() {
llVolumeDetect(TRUE);
fire_small();
}

collision_start(integer total_number) {
fire_big();
}
}

Perhaps add

hi, thanks-- that's already in my script. is it possible i have it in the wrong place?

I meant

collision_end(integer total_number) {
fire_small();
}

I forgot to edit it after the cut and paste. Someone knocked on the door.

thats it, it works thank you!

-Court

A change in particles is a full object update.. You might want to enable Advanced -> Show Updates to see how often it's updating.

If it's really frequently, you might want to use a timer instead.

Note also that if multiple avatars/objects are involved, you might get a 'collision_end' event when there are still things inside. You might consider adding a counter. Something like:

integer nCollisions = 0;

default
{
   state_entry()
   {
      llVolumeDetect(TRUE);
      fire_small();
   }

   collision_start(integer nDetected)
   {
      if (nAvatars <= 0)
      {
         fire_big();
         nCollisions = nDetected;
      } else
      {
         nCollisions += nDetected;
      }
   }

   collision_end(integer nDetected)
   {
      if (nCollisions <= nDetected)
      {
         fire_small();
         nCollisions = 0;
      } else
      {
         nCollisions -= nDetected;
      }
   }
}

(Tests like '<= 0' might seem unnecessary, but I like to be paranoid about that kind of thing and it's best to remember the limit of 16 collision events at once, as unlikely as exceeding that limit might be.)

llVolumeDetect, once used, remains in effect until every single script is removed from the prim. Phantom set by calling llVolumeDetect becomes a permanent fixture of the prim and can not be undone.

Try starting over with a fresh prim.