{
$ 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: > !