llRotTarget

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/LSL

RotTarget

llRotTarget

Summary

Function: integer llRotTarget( rotation rot, float error );

68	Function ID
0.0	Forced Delay
10.0	Energy

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.
Returns a handle (an integer) to unregister the target with llRotTargetRemove

• rotation	rot	–	target rotation
• float	error	–	angle in radians, defines when rot has been reached

A similar function exists for positions: llTarget
This function does not rotate the object, to do that use llSetRot, llRotLookAt or llLookAt.

Caveats

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Examples

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
    }

    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
    }
    
    at_rot_target(integer tnum, rotation targetrot, rotation ourrot)
    { 
        llRotTargetRemove( rottarget );
        llOwnerSay("there"); //reached the target
    }

    touch_start(integer touched){ 
        state default; 
    }
    
}

See Also

Events

• at_rot_target	not_at_rot_target	–	rotational target events
• at_target	not_at_target	–	positional target events

Functions

•	llRotTargetRemove	–	Cancel a target rotation
•	llTarget	–	Register a target position
•	llTargetRemove	–	Cancel a target position

Deep Notes

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Signature
function integer llRotTarget( rotation rot, float error );