http://www.youtube.com/watch?v=KTmwXr52cwM&hd=1
A special new language is available in the Realaxy Editor (RASE) since a new
Beta — the Events Flow language. It is designed to create finite-state
machines. You can use it to describe a "pathway" for your application. When you
create a special method with a flow annotation, you make your application
"stop" until some event(s) have been completed.
This screencast demonstrates an event subscription with a "catch" expression in
an infinite loop. The second sample describes a composite event (when a
keyboard and mouse buttons are pressed together) defined with "and" and "not"
statements.
The language also has a functionality to declare a special "state" labels and
conditional jumps ("jump"). There is also a tool for binding few different flow
methods in a "chain" (i.e. waiting for another flow method result).
All the subscriptions are automatically removed when the state is entered. This
feature is a headache relieve for the developers and also a good antidote for
memory leaks. From the Events Flow code RASE generates a pure ActionScript3
with a set of anonymous functions, the usual event handlers and transitions
made between them via functions calls.
You can use multiple flows at one time - an execution conflict is not going to
happen.
The language will be useful for the event maps creation in games and
interfaces. What is used to be described with a lot of unrelated event
handlers, can be now put in a single concise method.
Eugene Potapenko
@potapenko_______________________________________________
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