You'd create the new world and set field values using mutators.
So
if (x > 248 && x < 424 && y > 570 && y < 649) {
SState newState = new SState();
newState.setBackground(blah);
newState.setButton(blah2);
...
}
On Sun, Aug 1, 2010 at 5:22 PM, Richard Cleis <rcl...@mac.com> wrote:
> [snip]
>
> I was trying to emphasize that it may be harder to students to keep their
> code neater compared to some other languages which usually have code that
> rarely exceed 1 line.
> Example:
> Racket using the universe teachpack:
> (define (s-mouse-engine s x y event)
> (cond
> [(and
> (and (> x 248) (< x 424))
> (and (> y 570) (< y 649)))
> (make-S-STATE
> (get-s-background s) ;;I have made methods here to
> reduce length, but other wise it would be longer.
> (make-button
> (s-mouse-engine-worker1 event "button-img")
> (get-s-button-x s) ;;I have made methods here to
> reduce length, but other wise it would be longer.
> (get-s-button-y s) ;;I have made methods here to
> reduce length, but other wise it would be longer.
> (s-mouse-engine-worker1 event "button-initiate")))]
>
> How would you write that in another language that rarely exceeds one line?
> rac
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