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llRotTarget

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function
Function syntax
integer llRotTarget(
  1. rotation rot,// Target rotation to track.
  2. float error// Tolerance angle in radians defining when the target rotation is considered reached.
);
Returns
integer
Energy
10

This function is to have the script know when it has reached a rotation.

It registers a rot with a error that triggers at_rot_target and not_at_rot_target events continuously until unregistered.

A similar function exists for positions: llTarget

This function does not rotate the object, to do that use llSetRot, llRotLookAt or llLookAt.

Returns an integer to unregister the target with llRotTargetRemove

How to use
integer result = llRotTarget(ZERO_ROTATION, 0.0);

Examples

Section titled “Examples”
Example 1
vector standrot = <0.0, 0.0, 0.0>;
vector fliprot = <45.0, 0.0, 0.0>;


// simple two-state rot target detection and rotation by Hypatia Callisto
// works, to detect a rotation target. An example I wrote
// since there is almost zilch for clean examples for
// at_rot_target, not_at_rot_target, llRotTarget, llRotTargetRemove


integer rottarget;


default
{


    state_entry(){
        rottarget = llRotTarget(llEuler2Rot(fliprot*DEG_TO_RAD), 0.1);
        llSetPrimitiveParams ([PRIM_ROTATION, llEuler2Rot(standrot*DEG_TO_RAD)]); // rotate to starting point
    }
15 collapsed lines


    not_at_rot_target()
    {
        llRotTargetRemove( rottarget );
        llOwnerSay("not there"); //not at target
    }


    touch_start (integer total_number)
    {
        state rotatestate; // change to state for new position
    }
}




state rotatestate
{
    state_entry(){
        rottarget = llRotTarget(llEuler2Rot(fliprot*DEG_TO_RAD), 0.1);
        llSetPrimitiveParams ([PRIM_ROTATION, llEuler2Rot(fliprot*DEG_TO_RAD)]); // rotate to new point
    }
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    at_rot_target(integer tnum, rotation targetrot, rotation ourrot)
    {
        llRotTargetRemove( rottarget );
        llOwnerSay("there"); //reached the target
    }


    touch_start(integer touched){
        state default;
    }


}

See also

Section titled “See also”

Functions

Section titled “Functions”

Events

Section titled “Events”
Original wiki source

Some wiki templates and tables need their original context. View this article on the Second Life Wiki. Technical wording and examples are retained from the source; historical guidance may differ from current behavior.

From the Second Life Wiki

Community documentation adapted from LlRotTarget, by Linden Research, Inc. and contributing residents.View contributors and history.

Imported wiki revision:

Licensed under CC BY-SA 3.0. Last wiki edit: .Formatting and links have been adapted for this site; API metadata follows the LSL definitions.