[etoys-dev] Background counts on Playfield and Holder?

Steve Thomas sthomas1 at gosargon.com
Wed Sep 8 05:29:59 EDT 2010

Great idea.  Please send to me so I can play with my daughter when you are
One way to have "background picture" would be to place a transparent holder
over the picture, then you can see the background, but it is not part of the


On Wed, Sep 8, 2010 at 3:45 AM, Cherry Withers <cwithers at ekindling.org>wrote:

> Ah I see. Got it. I always thought that anything drawn on the background
> becomes part of that object (either the world, holder, or playfield) and
> serve just as aesthetics.
> I asked this question because I wanted to mimic some sort of a tea-party
> game to teach basic division. I wanted to put pictures or draw pictures of
> "friends" who will go to this party on each holder. My 4-year old and I
> would play this where I would give her cookies which she tries to divide
> equally amongst her friends.  Given your explanation Rita, I think I will
> just differentiate the holders by colors.
> Thank you!
> --Cherry
> On Wed, Sep 8, 2010 at 12:03 AM, Rita Freudenberg <
> rita at isg.cs.uni-magdeburg.de> wrote:
>> On Sep 8, 2010, at 8:52 AM, Cherry Withers wrote:
>> > Hi Team,
>> >
>> > Just noticed that drawing the background on these objects increases the
>> collection count to 1.
>> > It also considers the sketched background as another object within the
>> Playfield or Holder.
>> > Just wondering what the the reasoning behind for this.
>> When you draw something, it is always a new object. When you get the halo
>> for the newly painted object, open the menu icon. You can see there, that
>> the option "be locked" is clicked by default. So you cannot pick it up etc.
>> But if you change this option, you can drag it around just like any other
>> object you have painted.
>> I tried this yesterday when I worked on the UserInterface chapter about
>> the world, because this behaves the same way. I wrote a short sentence in
>> 3.1.2.
>> Rita
>> >
>> > Thanks,
>> > Cherry
>> >
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