Question about Chapter 3 Animation Test Program

Hello,

When I run the Animation Test, it seems that all that happens is the heart drops to the ground, and sits there. First, it dropped below the surface of the ground, then I adjusted the scale to be 1.5 and now when the heart hits the ground, its visible, and just sits there and does absolutely nothing. Any assistance in solving this problem would be appreciative. I am sure its something small that I am simply overlooking :)


datablock ItemData(TestShape)
{
shapeFile = "~/data/shapes/items/heart.dts";
mass = 1;
friction = 1;
};

function InsertTestShape()
{
%shape = new Item() {
datablock = TestShape;
rotation = "0 0 1 0";
};
MissionCleanup.add(%shape);

%shape.setTransform("-90 -2 20 0 0 1 0");
echo("Inserting Shape " @ %shape);
return %shape;
}

function AnimShape(%shape, %dist, %angle, %scale)
{
%xfrm = %shape.getTransform();
%lx = getword(%xfrm,0);
%ly = getword(%xfrm,1);
%lz = getword(%xfrm,2);
%rx = getword(%xfrm,3);
%ry = getword(%xfrm,4);
%rz = getword(%xfrm,5);
%lx += %dist;
%angle += 1.0;
%rd = %angle;

if($grow)
{
if($scale < 5.0)
%scale += 0.3;
else
$grow = false;
}
else
{
if(%scale > 3.0)
%scale -= 0.3;
else
$grow = true;
}

%shape.setScale(%scale SPC %scale SPC %scale);
%shape.setTransform(%lx SPC %ly SPC %lz SPC %rx SPC %ry SPC %rz SPC %rd);
schedule(200.0, AnimShape, %shape, %dist, %angle, %scale);
}

function DoAnimTest()
{
%as = InsertTestShape();
$grow = true;
AnimShape(%as, 0.2, -1, 1.5);
}