Flash MX 2004 Games : Art to ActionScript

Chapter 21: High score tables
Notice here that the ‘tabIndex’ is set for each of the input box text fields and the focus is set
to ‘name’.
The functionality for the form is basically handled by Flash. A text field input box allows for
keyboard input, character deletion, copying and pasting without a single line of code. The place
where some ActionScript is required is for the ‘register’ button. This has a simple ‘on (release)’
method.
1 //Register button action
2 on (release) {
3 if (emailcheck(email) && name!="" && password!="") {
4 loadVariables("scripts/register.asp","","POST");
5 nextFrame();
6 } else {
7 warning.gotoAndPlay(2);
8 }
9 }
Listing 21.2
First we make a check for a legitimate email using a function call; assuming this is OK we then
check for a name and password entry. If everything is in order, then we can send all the variables
in the current Flash movie to an ASP page, using the POST action, and then move to the next
frame. If the data entered is invalid, however, then we display a warning message that is embedded
in the movie clip ‘warning’.
The ‘emailcheck’ function works by testing for the presence of both the ‘@’ symbol and a dot
character, ultimately returning true only if they are both present in the email string passed to the
function.
1 function emailcheck (str) {
2 at = false;
3 dot = false;
4 for (i=0; i