Flash MX 2004 Games : Art to ActionScript

10 name = "Box" + i;
11 eval(name)._x = n;
12 eval(name)._y = 100;
13
14 }
}
Listing 11.7 ‘Examples/Chapter11/debug11.fla’
Chapter 11: Debugging
Program execution
Never assume you know what is going on under the hood. Some of the most stubborn bugs occur
because of program execution order. You may be setting something inside a movie clip that is
being overridden by another clip or a root level loop. Often the best way to discover the error is to
trace every function call. The following code snippet from ‘Examples\Chapter11\debug13.fla’
illustrates how to track program execution. Each function call is headed by a ‘trace’; the
trace string is set to give the parameters passed to the function, which can often highlight an
error.
1 count = 0;
2 while(count