First time here? First time here? Newsletter Signup Newsletter
Search tutorials
Author: Helen Triolo | Website: http://www.i-technica.com

Adding the Actions (con't)

Step 4.2 : Calculate total and percents

The following code shows how to use a for loop to do calculations on an array. For questions about the syntax, consult the Flash 5 ActionScript Dictionary. In this section, we also correct for possible rounding error and subtract 1 from the first segment because of the pie slice that already exists on the stage (part of 1st segment).

// Calculate total
for (i=0; i < nElements; i++) {
    nTotal += aCount[i];
// Calculate percents
for (i=0; i < nElements; i++) {
    aPercent[i] = math.round((aCount[i]/nTotal)*100);
    nTotalPercent += aPercent[i];  // keep for later fix
    if (i < nElements-1) {
        nAllButLast += aPercent[i];	   // keep this for later fix too
// if percents don't add to 100 (because of rounding they can be off by 1), fix last percent
if (nTotalPercent != 100) {
    aPercent[nElements-1] = 100 - nAllButLast;
// trace is commented out, but I usually leave them in because then I can cut and paste as needed
// trace("aCount=" + aCount + " nTotal=" + nTotal + " aPercent=" + aPercent + " nTotalPercent=" + nTotalPercent + " nAllButLast=" + nAllButLast);
// subtract 1 from first percent because 1 pie slice exists already
aPercent[0] -= 1;
» Level Advanced

Added: 2000-12-15
Rating: 7 Votes: 79
(10 being the highest)
» Author
Helen Triolo started i-Technica, a web design shop in the Washington DC area, three years ago, after being an apps engineer for a Silicon Valley company and then a programmer for an uncountable number of years. She's been hooked on Flash since buying a copy last January.
» Download
Download the files used in this tutorial.
» Forums
More help? Search our boards for quick answers!


  • There are no comments yet. Be the first to comment!

  • You must have javascript enabled in order to post comments.

Leave a Comment
  • Your email address will not be published. All fields are required.
Featured Flash FLA
» Author: Inocreato
» Title: RaiseTheBlocks
» Description: Raise all the blocks to win the game
Featured Sound Loops
Image for equalize

Audio Player

» Author: TomCat Carty
» Title: The Wood
» Description: Just a little game ending or it can maybe be looped. Recorders with music box and percussion to give the feel of well, I don't know, the woods? Free to use, just credit me. thank you
Latest Font
» Author: Fábio FAFERS
» Description: I created this font for free use. Everyone can apply it in personal or business texts. Its free, but I want to be communicated in case of business use. Donations are accepted to keep the project of free fonts alive! Thank you all
Featured Sound Fx
Image for equalize

Audio Player

» Author: Davisigner
» Description: Hmm... what to say about this one? It's reminiscent of the closing notes of the opening music from the Three Stooges done in a church organ style with a closing cymbal crash. I'll give this one away gratis, but feel free to check out my free loops and potential upcoming license-mandated ones over in the respective part of Flashkit.