Help With a Little Math?

Hi.

I need to know what rotation I would need to make an object face another object.

What Math would I do to work out how much to Rotate Object B so it's looking at Object A.

Essentially the calculation the llLookAt function does.

I have both objects position and rotation, but I'm not sure what equasion would do this?

vector lookat; // coordinates of point to look at
default
{
    state_entry()
    {
        llSetRot( llRotBetween( < 1.0, 0.0, 0.0 >, llVecNorm(lookat-llGetPos())));
    }

    moving_end()
    { // refresh after move
        llSetRot( llRotBetween( < 1.0, 0.0, 0.0 >, llVecNorm(lookat-llGetPos())));
    }
}

This will point the X-axis
use < 0.0, 1.0, 0.0 > for the Y-axis
use < 0.0, 0.0, 1.0 > for the Z-axis

Oo theres a function that does it all yay

thanks.

There's more too, look up llRotLookAt()

That doesn't return a value tho.