//returns the angle between two vectors
function angleBetween(%v1, %v2)
{
    //cos(theta) = (v1*v2)/(|v1|*|v2|)
    //theta = arccos(cos(thetha))
    return mAcos(VectorDot(%v1, %v2)/(VectorLen(%v1)*VectorLen(%v2)));
}

//only use x, y components since we're working on a 2D plane
%v1 = getWords(%player.getPosition(), 0, 1);
%v2 = getWords(%puck.getPosition(), 0, 1);

%lookVector = vectorSub(%v2, %v1); //vector that points from %v1 to %v2 with length |%v2-%v1|
%angle = angleBetween(%player.getForwardVector(), %lookVector);

//%theta being some acceptable view-bounds angle
//0 would mean looking right at the puck's position
//pi would mean looking anywhere
if(%angle <= %theta)
{
    //...
}

//takes 2D vector %v and returns the closest global axis-locked vector
function alignVector(%v)
{
    %x = getWord(%v, 0);
    %y = getWord(%v, 1);
    %sx = %x < 0 ? -1 : 1;
    %sy = %y < 0 ? -1 : 1;

    if(mAbs(%x) >= mAbs(%y))
        %vec = %sx SPC "0";
    else
        %vec = "0" SPC %sy;

    return %vec;
}

//say a player is looking mainly eastward
alignVector(%player.getForwardVector()) -> "1 0"