How to create a user-defined XY bound box

Hi,

I am trying to create a script to move a physical object with the llMoveToTarget() function but need to create a random vector within a user defined boundary for the object to move to. The object will remain on the same Z coordinate where the user places or edits it to, so it's only the X and Y coordinates that need to change in the target vector.

The user positions the object in the first corner of the bounding box then says "setpos1" and the script stores that vector, then the user moves the object to the opposite corner of the area that want it to move around in and says "setpos2" and the script stores that vector. Now how does the script go about generating random vectors for each llMoveToTarget() function that is called, vector which will remain inside those defined corners of the area?

I seem to be able to get it to move in a positive direction, but not a negative direction. And also it always goes out of the boundary area. I tried to adapt the Wiki LibraryScript "Create a Flying Pet" but it didn't work too well.

Okay then. Pick a random position in the two-dimensional box?

That's easy.

vector one = <1,1,0>;
vector two = <2,2,0>;

// Assumption: Vector Two is always greater than or equal to Vector One
// This will work even if it's the reverse
vector diff = two - one;

// Here's the random position
vector random = one + <llFrand(1.0) * diff.x,llFrand(1.0) * diff.y,llFrand(1.0) * diff.z>;

I suspect Jeff's reply will always put it on the diagonal...

different llFrand(1.0) calls for the x and y components will let it be anywhere.

diff.x * llFrand(1.0)
diff.y * llFrand(1.0)

then add to vector 1....

Whoops! You're right. Let me fix that.

hehe.. I haven't tried it yet but I'm sure it will work. Knew it was something easy like that.. just got my brain all messed up with the calculations of everything else and wasn't thinking simple enough.

I am getting syntax errors...

That's because the code is a stub. You need to enclose it in some form of event to make it work.

Here's a good read:

http://secondlife.com/badgeo/wakka.php?wakka=tutorial

OK its way beyond me....

It means just do this.

vector here = <0,0,0>; 
default
{
     state_entry()
     {
           here = llGetPos();
     }

     touch_start(integer total_number)
     {
           vector one = <1,1,0>;
           vector two = <2,2,0>;

          // Assumption: Vector Two is always greater than or equal to Vector One
           // This will work even if it's the reverse
           vector diff = two - one;

           // Here's the random position
           vector random = one + <llFrand(1.0) * diff.x,llFrand(1.0) * diff.y,llFrand(1.0) * diff.z>;
           llSetPos(here + random);
     }
}