LlDetectedVel

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/LSL

DetectedVel

llDetectedVel

Summary

1 Bug

Function: vector llDetectedVel( integer number );

0.0	Forced Delay
10.0	Energy

Returns the vector velocity of detected object or avatar number.

• integer

number

–

Index of detection information

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

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 this function returns <0.0, 0.0, 0.0> and 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> //Tells the name and velocity of all near-by avatars. default {

   state_entry() 
   {
       // Scan once for avatars within a 20 metre radius sphere
       llSensorRepeat("", "", AGENT, 20.0, PI,1.0);
   }
   sensor(integer num) 
   {
       // num will initially be 1 or more. When num is 1, the index of the detected avatar will be zero       
       while(num--) 
       {
           llOwnerSay(llDetectedName(num) + " is moving at " + (string)llVecMag(llDetectedVel(num)) + " m/s.");
       }
   }

}

</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 vector llDetectedVel( integer number );