[squeakland] Tools to Export Images from Etoys (eventually directly to a Blog Post)
sthomas1 at gosargon.com
Mon Apr 4 13:36:25 EDT 2011
So, I have the following script:
(myPlayer costume renderedMorph isKindOf: BookMorph)
ifTrue: [self beep: 'croak']
ifFalse: [(myPlayer costume renderedMorph ownerThatIsA: BookMorph)
ifNil: [self beep: 'chomp']
ifNotNil: [self beep: 'croak']]
It will "croak" if I click on a BookMorph or any object contained inside the
BookMorph. So far so good.
Now how go I set my *myPlayer* variable to the BookMorph in its "owner
chain" (if that's the common terminology)?
On Mon, Apr 4, 2011 at 1:09 PM, Scott Wallace
<scott.wallace at squeakland.org>wrote:
> On Apr 4, 2011, at 7:09 AM, Bert Freudenberg wrote:
> > On 04.04.2011, at 15:20, Steve Thomas wrote:
> >> How can I detect if a player variable is a book object? (sometimes it is
> hard to click on the book and if you get another object and try to run the
> script an exception is thrown).
> > (var costume class isKindOf: BookMorph) ifTrue: [...]
> This should be simply
> (var costume isKindOf: BookMorph) ifTrue: [...]
> i.e. the "class" shouldn't be there.
> Also, for completeness, perhaps the "best" version would be:
> (var costume renderedMorph isKindOf: BookMorph) ifTrue: [...]
> ... because this will work even if the BookMorph has been rotated ;-)
> -- Scott
> squeakland mailing list
> squeakland at squeakland.org
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