In Example 1.1, we introduced new programmers to a simple scripted movie—a multiple-choice quiz. Let’s revisit that quiz now to see how we can centralize its code.
Our new quiz’s layer structure is set up exactly as before.
We’ll be changing the code on only the first frame, the
quizEnd frame, and the buttons.
You can retrieve the
.fla file for both the
original and revised versions of the quiz from the online Code Depot.
our first attempt at creating a
multiple-choice quiz, we scattered our code around our movie. We
placed the logic of our quiz in three places: on the first frame,
where we initialized our quiz; on the buttons, where we tracked the
user’s answers; and on the
where we tallied the user’s score. We’re now going to
centralize the quiz logic by performing all of those tasks in the
first frame. To initialize the quiz, we’ll still use a simple
series of statements as we did in the first version, but to track the
user’s answers and tally the user’s score, we’ll
use two functions,
answer( ) and
Example 9.10 shows the code on our quiz’s first frame. This is where we’ll store all the logic needed to run our quiz. Take a look at the code in its entirety, then we’ll dissect it.
Example 9-10. A Multiple-Choice Quiz, Version 2
// Stop the movie at the first question stop ( ); // Initialize main timeline variables var displayTotal; // Text field for displaying user's score var ...