llReleasePermissions

I have a sit that asks permissions to animate an avatar. I use chat to select the animation, and so I can change the sit pose while the avatar is sit. However if I use the chat when the vatar stands up, the avatar is still animated. I suspect I have to release permissions before stand up, but how? There is no llReleasePermissions function in LSL!

Note that if I place

llRequestPermissions(avatar,0x00) ;

in the changed event when avatar stands up, I get an error, since avatar is no more available for granting permissions.

I bet if you pass NULL_KEY to llRequestPermissions(), it will have the desired effect.

However, there is a simple alternative that works regardless: don't take action unless llAvatarOnSitTarget() matches llGetPermissionsKey(), and they're not NULL_KEY.

BTW, the error you're getting has nothing to do with whether the avatar is sitting. You can request permissions when an avatar is not sitting. Something else is going on there. Perhaps 'avatar' is NULL_KEY or something, in which case my first suggestion won't work. Try using the key of the avatar who had been sitting.

It is also a good idea to check if the avatar is still logged in before animating them or stopping an animation. Check if llGetAgentInfo(key) returns a non-zero value before changing the avatar's animation. Although in your case it is impossible for llAvatarOnSitTarget() to return the key of a logged out avatar. But when stopping animation on avatar unsit you do need to check for logout.

I did as you said and it works, of couse. Thank you very much. Just a question... what if the object that animates an avatar is not a sit but an attached one? How do I get the key in that case?

For an attachment, use llGetOwner(). Only the owner can attach an object. If the object is dual-purpose (attached or set out), you can use llGetOwner in the "attach" handler.

Thank you