Run control blocks until receiving broadcast message?
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Avron Stoloff
Member
February 25, 2013
Will Scratch 2.0 support the ability to run control blocks (e.g. Repeat until) until receiving a broadcast message?
Yes, you can use a variable, and that is what I have taught my students to do, but it is an extra step. It seems like incorporating support for using the broadcast as a condition would be something many people would naturally want to use.
A broadcast is an event. Expecting to test for it as a condition is not natural as you can't guarantee that the condition would be executing when the event is broadcast hence the need for a variable to store the fact that an event has happened. I'd even go as far to say that the condition would always be false and so the repeat would never end without using a variable. It would be the ultimate race condition and so not something that would be implemented.
Can't see a diffeence between 1.4 and 2 here. Can't you use a variable?
e.g. Broadcast "Something", When I receive "Something" then set "variable" to "true"
then just have Repeat Until "variable" = "true"