LlAttachToAvatarTemp

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/LSL

AttachToAvatarTemp

llAttachToAvatarTemp

Summary

1 Bug

Function: llAttachToAvatarTemp( integer attach_point );

	Forced Delay
	Energy

Follows the same convention as llAttachToAvatar, with the exception that the object will not create new inventory for the user, and will disappear on detach or disconnect. Also, this function can be used on avis other than the owner (if granted permission) in which case the ownership is changed to the new wearer.

• integer

attach_point

–

ATTACH_* constant or valid value (see the tables below)

To run this function the script must request the PERMISSION_ATTACH permission with llRequestPermissions. It should be noted that when an object is attached temporarily, a user cannot 'take' or 'drop' the object that is attached to them. The user does not have to be the owner of the object in advance; this function transfers ownership automatically (the usual permissions required to transfer objects apply).

Note: Constants in italic require a viewer compatible with the Project Bento skeleton.

Body Constant # Name Comment ATTACH_HEAD 2 Skull head ATTACH_NOSE 17 Nose nose ATTACH_MOUTH 11 Mouth mouth ATTACH_FACE_TONGUE 52 Tongue tongue ATTACH_CHIN 12 Chin chin ATTACH_FACE_JAW 47 Jaw jaw ATTACH_LEAR 13 Left Ear left ear ATTACH_REAR 14 Right Ear right ear ATTACH_FACE_LEAR 48 Alt Left Ear left ear (extended) ATTACH_FACE_REAR 49 Alt Right Ear right ear (extended) ATTACH_LEYE 15 Left Eye left eye ATTACH_REYE 16 Right Eye right eye ATTACH_FACE_LEYE 50 Alt Left Eye left eye (extended) ATTACH_FACE_REYE 51 Alt Right Eye right eye (extended) ATTACH_NECK 39 Neck neck ATTACH_LSHOULDER 3 Left Shoulder left shoulder ATTACH_RSHOULDER 4 Right Shoulder right shoulder ATTACH_LUARM 20 L Upper Arm left upper arm ATTACH_RUARM 18 R Upper Arm right upper arm ATTACH_LLARM 21 L Lower Arm left lower arm ATTACH_RLARM 19 R Lower Arm right lower arm ATTACH_LHAND 5 Left Hand left hand ATTACH_RHAND 6 Right Hand right hand ATTACH_LHAND_RING1 41 Left Ring Finger left ring finger ATTACH_RHAND_RING1 42 Right Ring Finger right ring finger ATTACH_LWING 45 Left Wing left wing ATTACH_RWING 46 Right Wing right wing ATTACH_CHEST 1 Chest chest/sternum ATTACH_LEFT_PEC 29 Left Pec left pectoral ATTACH_RIGHT_PEC 30 Right Pec right pectoral ATTACH_BELLY 28 Stomach belly/stomach/tummy ATTACH_BACK 9 Spine back ATTACH_TAIL_BASE 43 Tail Base tail base ATTACH_TAIL_TIP 44 Tail Tip tail tip ATTACH_AVATAR_CENTER 40 Avatar Center avatar center/root ATTACH_PELVIS 10 Pelvis pelvis ATTACH_GROIN 53 Groin groin ATTACH_LHIP 25 Left Hip left hip ATTACH_RHIP 22 Right Hip right hip ATTACH_LULEG 26 L Upper Leg left upper leg ATTACH_RULEG 23 R Upper Leg right upper leg ATTACH_RLLEG 24 R Lower Leg right lower leg ATTACH_LLLEG 27 L Lower Leg left lower leg ATTACH_LFOOT 7 Left Foot left foot ATTACH_RFOOT 8 Right Foot right foot ATTACH_HIND_LFOOT 54 Left Hind Foot left hind foot ATTACH_HIND_RFOOT 55 Right Hind Foot right hind foot

HUD Constant Comment ATTACH_HUD_CENTER_2 31 HUD Center 2 ATTACH_HUD_TOP_RIGHT 32 HUD Top Right ATTACH_HUD_TOP_CENTER 33 HUD Top ATTACH_HUD_TOP_LEFT 34 HUD Top Left ATTACH_HUD_CENTER_1 35 HUD Center ATTACH_HUD_BOTTOM_LEFT 36 HUD Bottom Left ATTACH_HUD_BOTTOM 37 HUD Bottom ATTACH_HUD_BOTTOM_RIGHT 38 HUD Bottom Right Special Constant Comment ATTACH_ANY_HUD -1 A special constant representing all HUD attachment points when filtering.

Caveats

Permissions

Do not depend upon the auto-grant status of permissions. Always use the run_time_permissions event. If the script lacks the permission PERMISSION_ATTACH, the script will shout an error on DEBUG_CHANNEL and the operation fails (but the script continues to run). Once the PERMISSION_ATTACH permission is granted there is no way to revoke it except from inside the script (for example, with a new llRequestPermissions call) or the script is reset or deleted.

• When object ownership changes, any granted permissions are reset. After a successful attach, you will need a fresh call to llRequestPermissions to allow llDetachFromAvatar and other permission-required functions to work.
  • Until successful attachment via this method, previously granted permissions are retained as normal.
• The attach step is not guaranteed to succeed, and this function should not be relied on as a security measure. Use the same permission and script precautions you would use with conventional inventory transfers.
• If you use llAttachToAvatarTemp in an object that you do not have permission to transfer, the function will fail with a script error No permission to transfer, even if you are trying to attach it to yourself.
• Temporary attachments cannot request the permission PERMISSION_TELEPORT, the following error will be returned: "Temporary attachments cannot request runtime permissions to teleport"
• Attach points can be occupied by multiple attachments.^[1]
  • This was not always the case, previously if attach_point was occupied, the existing object was detached and the new attachment took it's place.
• Objects attached to the head (and any attachment position within the head) will not be visible in First Person view (aka Mouselook) if "show attachments in mouselook" is disabled.
• If attach_point is zero but the object was never previously attached, it defaults to the right hand (ATTACH_RHAND).
• If the object is already attached the function fails silently, regardless if the attach_point is a different attach point.
• If attached via a Land Scope Experience script, the object will be forced detached by the server if the owner enters a parcel that does not have the Experience allowed.
• If the target agent is already wearing the maximum number of attachments, the object will remain on the ground with the target agent as owner. Scripters may wish to check for successful attachment and llDie() after a timeout or if the object is manipulated while unattached.

Examples

//-- rez object on ground, drop in this script, it will request permissions to attach,
//-- and then attach to the left hand if permission is granted. if permission is denied,
//-- then the script complains.
default
{
    state_entry()
    {
        llRequestPermissions( llGetOwner(), PERMISSION_ATTACH );
    }

    run_time_permissions( integer vBitPermissions )
    {
        if( vBitPermissions & PERMISSION_ATTACH )
        {
            llAttachToAvatarTemp( ATTACH_LHAND );
        }
        else
        {
            llOwnerSay( "Permission to attach denied" );
        }
    }

    on_rez(integer rez)
    {
        if(!llGetAttached())
        { //reset the script if it's not attached.
            llResetScript();
        }
    }

    attach(key AvatarKey)
    {
        if(AvatarKey)
        {//event is called on both attach and detach, but Key is only valid on attach
            integer test = llGetAttached();
            if (test) {
                llOwnerSay( "The object is attached" );
            } else {
                llOwnerSay( "The object is not attached");
            }
        }
    }
}

//-- This example can demonstrate ownership transfer of an object on a temporary basis using llAttachToAvatarTemp()
//-- Whoever touches will be asked for permission to attach, and upon granting permission will have the item attach,
//-- But not appear in Inventory.
default
{
    touch_start(integer num_touches)
    {
        llRequestPermissions( llDetectedKey(0), PERMISSION_ATTACH );
    }

    run_time_permissions( integer vBitPermissions )
    {
        if( vBitPermissions & PERMISSION_ATTACH )
        {
            llAttachToAvatarTemp( ATTACH_LHAND );
        }
        else
        {
            llOwnerSay( "Permission to attach denied" );
        }
    }

    on_rez(integer rez)
    {
        if(!llGetAttached())
        { //reset the script if it's not attached.
            llResetScript();
        }
    }
}

// This example illustrates how to handle permissions before and after llAttachToAvatarTemp has been called. Because ownership
// changes when the object is attached, the initial PERMISSION_ATTACH is revoked and new permissions need to be requested.

integer gAttach = TRUE;

default
{

    touch_start(integer num)
    {
        if (gAttach)  // Object has not been attached yet
        {
            llRequestPermissions(llDetectedKey(0),PERMISSION_ATTACH);
            gAttach = FALSE;
        }
        else   // Object has been attached, but you still need PERMISSION_ATTACH in order to detach the object
        {
            if (llGetPermissions() & PERMISSION_TRIGGER_ANIMATION | PERMISSION_ATTACH)
            {
                llDetachFromAvatar();  // Note that the object vanishes when detached, so there is no need to set gAttach = TRUE again
            }
        }
    }

    attach(key id)
    {
        if (id)  // Object has been attached, so request permissions again
        {
            llRequestPermissions(id,PERMISSION_ATTACH | PERMISSION_TRIGGER_ANIMATION);
        }
    }

    run_time_permissions (integer perm)
    {
        if (!gAttach)  //First time
        {
            if (perm & PERMISSION_ATTACH)
            {
                gAttach = TRUE;
                llAttachToAvatarTemp(ATTACH_HEAD);  // Initial PERMISSION_ATTACH is revoked at this point
            }
        }
        else  // Second time
        {
            if (perm & PERMISSION_ATTACH | PERMISSION_TRIGGER_ANIMATION)
            {
                llStartAnimation(llGetInventoryName(INVENTORY_ANIMATION,0));
            }
        }
    }
}

An alternative solution:

// Because ownership changes when the object is attached, the initial PERMISSION_ATTACH is revoked and new permissions need to be requested.

default
{
    touch_start(integer num)
    {
        if (!llGetAttached()) llRequestPermissions( llDetectedKey(0), PERMISSION_ATTACH);
        else if ( llGetPermissions() & PERMISSION_ATTACH) llDetachFromAvatar();
    }
    attach(key id)
    {
        if (id) llRequestPermissions( id, PERMISSION_ATTACH | PERMISSION_TRIGGER_ANIMATION);
    }
    run_time_permissions (integer perm)
    {
        if (!llGetAttached() && (perm & PERMISSION_ATTACH)) llAttachToAvatarTemp( ATTACH_NOSE);
        if (perm & PERMISSION_TRIGGER_ANIMATION) llStartAnimation( llGetInventoryName( INVENTORY_ANIMATION, 0));
    }
}

See Also

Events

•

run_time_permissions

–

Permission receiving event

Functions

•	llGetPermissions	–	Get the permissions granted
•	llGetPermissionsKey	–	Get the agent who granted permissions
•	llRequestPermissions	–	Request permissions
•	llDetachFromAvatar	–	Detaches the object from the avatar
•	llGetAttached	–	Gets the attach point number

Articles

•

Script permissions

Deep Notes

History

Date of Release 24/07/2012

Footnotes

1. ^ Multiple attachments per attach point were added as result of SCR-277

Signature
function void llAttachToAvatarTemp( integer attach_point );

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