private void spawnUFO()
{
float yval = rdHeight;
Vector3 spawnPt = new Vector3(-spawnPtPad - (rdWidth / 2), yval, 0);
GameObject go = new GameObject();
go.name = "UFO";
go.transform.position = spawnPt;
ufo = go.AddComponent <Ufo>();
ufo.init(this, false);
}