On Fri, Apr 15, 2011 at 10:37 AM, Bert Freudenberg bert@freudenbergs.de w= rote: ...
Constructing a complex tile in Etoys goes from the concrete to the more a=
bstract. You start giving specific instructions and then generalize.
So at first,=A0you place that "Red | action" tile in your script. Then yo=
u can test if that is working.
Later, you replace the "Red" receiver tile with the "AllPlayers |=A0playe=
r at cursor". You drag it from the viewer onto the "receiver pad" of the=A0= "Red | action" tile. ...
This "outside-in" construction of complex tiles works naturally when you =
"invent" the script=A0yourself step-by-step by experimenting. When you only= see the result, it can be perplexing how to construct it. The sequence is = executed from left to right, but made from right to the left. That's why fo= r arithmetic expressions there is the little "extend" arrow to the right (b= ut you still need to build nested expressions outside-in).
This outside-in method, as well as the ability to send a message to all players in a collection, are important tools for advanced tile scripts. Do we have a tutorial covering this in the Squeakland documentation? If not, I suggest we use Bert's scripts and explanation as the basis for the first draft.
David