llAvatarOnSitTarget

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AvatarOnSitTarget

llAvatarOnSitTarget

Summary

Function: key llAvatarOnSitTarget( );

0.0	Forced Delay
10.0	Energy

Returns a key that is the UUID of the user seated on the prim.

If the prim lacks a sit target or there is no avatar sitting on the prim, then NULL_KEY is returned.

Caveats

• A prim does not have a sit target unless llSitTarget has been called with a nonzero vector as the first argument.
• If the prim lacks a sit target or the avatar is seated upon a different prim, the only way to determine how many and which avatars are seated upon the object is to scan the link set¹.

Examples

<lsl> default {

   state_entry()
   {
       // set sit target, otherwise this will not work 
       llSitTarget(<0.0, 0.0, 0.1>, ZERO_ROTATION);
   }

   changed(integer change) {
       if (change & CHANGED_LINK) { 
           key av = llAvatarOnSitTarget();
           if (av) {//evaluated as true if not NULL_KEY or invalid
               llSay(0, "Hello " + llKey2Name(av) + ", thank you for sitting down");
           }
       }
   }

}

</lsl>

Useful Snippets

<lsl> //Gets the link number of a seated avatar integer GetAgentLinkNumber(key avatar) {

   integer linkNum = 1 + llGetNumberOfPrims();
   key linkKey;
   //Next we get the linkKey and make sure it's not null, if it's null we are done.
   while((linkKey = llGetLinkKey( --linkNum )))//is the key valid?
       if(avatar == linkKey)//is it the avatar we want?
           return linkNum;//It's the avatar we want so return.
   //avatar wasn not found
   //return a number that isn't a LINK_* flag not a valid link number either.
   return 0x7FFFFFFF;//max int.

}//Written by Strife Onizuka </lsl>

Notes

1. To scan a link set using a function such as llGetLinkKey (see llGetNumberOfPrims#Useful_Snippets for examples).
2. The position of an avatar on a sit target can be determined with the use of llGetObjectDetails (see llSitTarget#Useful_Snippets for example).

See Also

Events

•

changed

Functions

•	llSitTarget
•	llGetLinkKey

Articles

•

CHANGED_LINK

Deep Notes

Signature
function key llAvatarOnSitTarget();