{
    $ self=

    x= y=
    x self x: < self=
    y self y: < self=

    {
        self= dx= dy=

        self x: > dx + self x: < self=
        self y: > dy + self y: < self=

        self
    } self move: < self=

    {
        self=

        "self:x " print! self x: > println!
        "self:y " print! self y: > println!

        self
    } self println: < self=

    self

} Sprite=


0 20.5 Sprite ! s=
s s println: > !


1 5 0- s s move: > ! s=
s s println: > !