Two Avatars on single prim

Ever wondered how to make two or more avatars to sit on single prim, to save prim amount on a furniture?

You need two kinds of scripts; the master (which calculates avatars sitting down and standing up) and a slave script for each additional avatar.

This is a modification of Pale Janus's script, originally posted here: OsGrid

DISCLAIMER: Do note, that in a linkset other child prims may move if you are not careful when setting this up. That means you have to tell the script how many prims is normal for your linkset

Here are the basic scripts: modified for two avatars on single prim

MASTER <lsl> integer lastnum; key firstavatar; key secondavatar; string animation; integer num; integer firstnum; integer secondnum; integer originalprims;

//NOTE: An avatar is a CHILD prim, if you wish to move it after it has sat down, you need to know what her prim number is and use llSetLinkPrimitiveParamsFast to move her // October 5th 2013 Pale Janus & Cay Trudeau

default {

   on_rez(integer flag) { do { llResetScript(); } while (TRUE); }

   state_entry()
   {
               
       animation = llGetInventoryName(INVENTORY_ANIMATION,0);
       llSitTarget(<1,1,1>, llEuler2Rot( <0 * DEG_TO_RAD, 0 * DEG_TO_RAD, 0 * DEG_TO_RAD> ) ); // there has to be something as sit target here, or else  llSetLinkPrimitiveParamsFast fails
       llSetSitText("Sit");
       llSetClickAction(CLICK_ACTION_SIT);
    
       lastnum=llGetNumberOfPrims();
       originalprims=llGetNumberOfPrims(); // you can set this value to your unsitted object
      
       llSetCameraEyeOffset(<-1, 0, 1> *  <0.0, 0.0, 0.0, 0.0>);
       llSetCameraAtOffset(<3, 0, 1> *  <0.0, 0.0, 0.0, 0.0>);
   }

   changed(integer change)
   {
       if ( change &  CHANGED_REGION_START) do { llResetScript(); } while (TRUE);

       if (change & CHANGED_LINK)
       {   
           num = llGetNumberOfPrims();
     
           
            // Below is where all the magic happens
           if (num >  originalprims) // New avatar sitting down
           {
               if (num > originalprims && num < (originalprims + 2))  // 1st avatar sitting
               {
                     firstnum = llGetNumberOfPrims();
                   firstavatar = llGetLinkKey(firstnum); //the avatar's UUID (cannot use llGetKey(llAvatarOnSitTarget) bc two avatars)
                  
                     
                    llRequestPermissions(firstavatar,PERMISSION_TRIGGER_ANIMATION);
                   
           //This is where we determine the avatar's sitting position
           llSetLinkPrimitiveParamsFast(firstnum,[PRIM_POS_LOCAL,<0.0, -0.8, 0.2>,PRIM_ROT_LOCAL,ZERO_ROTATION]); // < -front + back , -right + left, -down + up >
                   
                   llSitTarget(ZERO_VECTOR,ZERO_ROTATION); //releasing the sit target for next avatar
                   
                   lastnum = firstnum; 
                
                 }//1st avatar sitting end
                
                 
                
                  if ( num > (originalprims + 1) )// second avatar sitting
               {
                   secondnum = llGetNumberOfPrims();
                   lastnum = secondnum; // Cay added this
                  
                  llMessageLinked(LINK_THIS,200,(string)secondnum,""); //sends key
                   
                }//second avatar sitting end
           
           
              
                          
           } // (num > originalprims && num < originalprims + 2) end
           
           
           else if (num < lastnum) //standing up ( I think this requires change upon the lastnum when the avatar sits, although it is mentioned at the bottom
           {
               llStopAnimation(animation);

               if ( num > originalprims && num < originalprims + 2 )
               {
                  
                   llSitTarget(<0.8, -1.05, -0.2>, llEuler2Rot( <0 * DEG_TO_RAD, 0 * DEG_TO_RAD, 0 * DEG_TO_RAD> ) );

                 // llMessageLinked(LINK_THIS,1111,"whostoodup",""); //This is a hint for how to make an edition for multiple avatars ;) 1111 being a channel to all slaves
               }
               
           }
          
           lastnum = num;
          
       }
   }

   run_time_permissions(integer perm)
   {
       if (perm == PERMISSION_TRIGGER_ANIMATION )       
       {
           llStopAnimation("sit");
           llSleep(0.1);
           llStartAnimation(animation);
                      
           }
       }

}//state default

</lsl>

SLAVE <lsl>

   integer lastnum;   

integer avatarcount = 0; key coavatar; string animation; string whostoodup;

key secondavatar;

// October 5th 2013 Pale Janus & Cay Trudeau

integer secondnum;

default {

   on_rez(integer flag) { do { llResetScript(); } while (TRUE); }

   state_entry()
   {
          llSitTarget(<1,1,1>, llEuler2Rot( <0 * DEG_TO_RAD, 0 * DEG_TO_RAD, 0 * DEG_TO_RAD> ) ); // there has to be something as sit target here, or else  llSetLinkPrimitiveParamsFast fails
        animation = llGetInventoryName(INVENTORY_ANIMATION,0);
       lastnum=llGetNumberOfPrims();
   }
   

     link_message(integer sender, integer num, string str, key id)
   {
        if(num == 1111) //someone just stood up
       {
           whostoodup = str;
             }

       if(num == 200) //received 2nd avatar key 

// when making multiple avatar scipring, a new slave will have different num, fe. third script would have num == 300 a fourth num ==400 etc.

       {
           secondnum = (integer)str;
           secondavatar =  llGetLinkKey(secondnum);
                   llRequestPermissions(secondavatar,PERMISSION_TRIGGER_ANIMATION);
                  
           //This is where we determine the avatar's sitting position
           llSetLinkPrimitiveParamsFast(secondnum,[PRIM_POS_LOCAL,<0.0, 0.8, 0.2>,PRIM_ROT_LOCAL,ZERO_ROTATION]); // < -front + back , -right + left, -down + up >
                   
                   llSitTarget(ZERO_VECTOR,ZERO_ROTATION); //releasing the sit target for next avatar
           
           // llMessageLinked(LINK_THIS,300,"2nd avatar sat down",""); // We message the third script
           
          
       }//200
   }
   
 
   
   
  

   run_time_permissions(integer perm)
   {
       if (perm == PERMISSION_TRIGGER_ANIMATION)       
       {
           llStopAnimation("sit");
           llSleep(0.1);
           llStartAnimation(animation);
          
       }

   }
  

} </lsl>