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Flash is an event-driven language, and events are the glue that bind together our Flash experiences. Whether you need to work with user mouse interaction, know when an XML file has completed, build a loading animation, know when your application enters/exits full-screen -- in short, when you need to use events to do almost anything in Flash -- understanding events is key to achieving fluency in ActionScript 3.
And, of course, events in AS3 are completely and fundamentally different from events in AS2. While events in AS3 might seem intimidating on first glance (especially if you've become accustomed to writing your button code in AS2 like btn.onPress = function ()...), fortunately, events in AS3 are incredibly consistent as well as powerful. Once you know how to work with one event, you can work with any event anywhere in the language! However, there are some real limitations that you encounter when working with Events in AS3 -- and these limitations impinge on our ability to freely store data in our events, and freely transmit these events throughout the Display List. This course walks you through these limitations, one by one. For each, we discuss the limitation, how it can impact our code, and ways to circumvent the limitation. We then conclude with a discussion and description of the Event Broadcaster, which is a popular construct to circumvent all of the limitations of the native Flash event flow, expanding the ways in which you can work with events in Flash. And while events are the glue that bind our Flash together, it is incredibly difficult to find books, lessons or tutorials on these specific issues. Which is why we assembled this course. Part 1 of the course is a 'cookbook'-style exploration of how to work with a wide variety events in ActionScript 3, including many separate lesson files, each illustrating a single concept. Part 2 of the course is a more advanced, project-based exploration of events in AS3, as we build an XML-powered image gallery with an AS3 Event Broadcaster.