LlDetectedRot

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/LSL

DetectedRot

llDetectedRot

Summary

Function: rotation llDetectedRot( integer number );

0.0	Forced Delay
10.0	Energy

Returns a rotation that is the rotation of detected object number.

• integer

number

–

Index of detection information

number does not support negative indexes. Returns <0.0, 0.0, 0.0, 1.0> if number is not valid sensed object.

Specification

llDetected* functions only work if called from within Detection events (collision, collision_start, collision_end, sensor, touch, touch_start, touch_end) or in functions called by Detection events. They will fail silently and return unusable values if called during other events.

Caveats

• If number is out of bounds the script continues to execute without an error message.
• Events that enable the llDetected* functions always return at least one detected item.
  • Detection events are not raised if there is nothing detected.^[1]
  • The detection event's items detected parameter is initially never less than 1.^[2]

Examples

<lsl> //--// get compass facing of Avatar that touches this object //--//

//-- @@ = Contains code optimizations, see the following page for details //-- wiki.secondlife.com/wiki/User:Void_Singer/Optimizations

//-- list of compass directions starting at West, rotated counterclockwise

list gLstCompassPoints = [ "West", "SouthWest", "South", "SouthEast", "East", "NorthEast", "North", "NorthWest" ];

//-- convert rotation to z-axis compass direction

string vfCompassDirection( rotation vRotBase ) {

  //-- convert rotation to dgrees
 vector vVecBase = llRot2Euler( vRotBase ) * RAD_TO_DEG;
  //-- convert to range [0, 360)
 integer vIntDirection = ((integer) (vVecBase.z + 202.5)) % 360;
 // -- convert to string
 return llList2String( gLstCompassPoints, vIntDirection / 45 );

}

default{

 state_entry()
 {
   llSay( 0, "Touch me to get your compass facing" );
 }

 touch_start( integer vIntTouchCount )
 {
   integer vIntCounter = 0;
   do
   {
     llSay( 0,
            llDetectedName( vIntCounter )
            + " is facing "
             //-- next line gets avatar rotation and converts to compass direction
            + vfCompassDirection( llDetectedRot( vIntCounter ) ) );
   } while ( ++vIntCounter < vIntTouchCount ); //-- @@
 }

}

</lsl>

See Also

Articles

•

Detected

Deep Notes

Footnotes

1. ^ The exception is no_sensor but it doesn't enable llDetected* functions.
2. ^ Like all event parameters, the user can overwrite the initial value.

Signature
function rotation llDetectedRot( integer number );