Home > Articles

  • Print
  • + Share This
This chapter is from the book

Task: Determine Whether a Movie Is Fully Loaded

In this task you'll check the _framesloaded property against the _totalframes property to determine when a loaded movie is totally loaded. Here are the steps to follow:

  1. First, create the submovie that will be loaded. Set the document properties (Ctrl+J) to 300x300. Then create a linear animation that starts in frame 2. That is, click frame 2, select Insert Keyframe (or press F6), and then build the animation that plays through many more frames (maybe out to frame 60). If you have a series of bitmaps (like still frames of a video), this would be ideal because you want something that takes a little while to download.

  2. In the first frame of this submovie, put a stop Action (Esc, S, T) followed by an evaluate Action (Esc, E, V). Type in the Expression field waiting=true, as shown in Figure 19.4. (You'll use this in the main movie to make the host movie wait for the submovie to load.)

  3. In frame 1 on the Stage, put the Static Text "Loading..." and then create a Dynamic Text block with "0" in it , but be sure to associate a variable called "percent" with the Dynamic Text (see Figure 19.5). Also set the margins on the text wide enough to accommodate "100". This field will show the user the status of the download.

  4. In the last frame of this movie, place a GoTo Action and set the frame parameter to 2. This will cause the animation to loop, but not all the way back to frame 1 (where the loading screen appears).

  5. In a new folder, save this movie as submovie.fla and then do a Test Movie (Ctrl+Enter) to create an .swf called submovie.swf. (When you Test Movie, the movie just sits on frame 1—you'll control this issue from the movie into which it loads.)

Figure 19.4 The variable "waiting" is set to "true" because the host movie is going to wait until this movie is entirely downloaded.

Figure 19.5 Even though the movie's stuck on frame 1, the user will see a message that includes a Dynamic Text block containing a variable (which you'll be changing) called "percent."

  1. Now in a new movie, draw a box that's exactly 300x300 (remove the fill), select Convert to Symbol (or press F8), call it "Holder," and make sure it's a Movie Clip. Be sure to name the instance now on the Stage "theClip" (from the Properties panel). Now, edit the master version of this clip (just double-click it). Select View, Grid, Snap to Grid. Now select the entire square and then grab the top-left corner and snap it to the center of the clip (the little plus sign in the center of the screen).

  2. Back in the main scene of this movie, create a button and make a total of three instances of it. In the first instance, insert a loadMovie Action with URL specified as submovie.swf, Location set to "Target," and theClip specified in the field next to "Target."

  3. The other two buttons should each use a simple evaluate function using theClip.play() for one and theClip.stop() for the other.

  4. Now it's time to create the script attached to the instance of the Holder symbol (instance name, "theClip"). Select theClip and open the Actions panel. First, insert an "onClipEvent" found under the plus button, Actions, Movie. Change the onClipEvent parameter from "load" to "EnterFrame" (the first line of the script). Then insert an evaluate Action (Esc, E, V) and type the following in the Expression parameter: percent=_framesloaded/_totalframes . This tells the Dynamic Text onscreen to display the results of dividing the number of frames completely loaded by the number of total frames (in this case, the number of frames in your submovie). This isn't complete, but let's think about it. The variable you're calling "percent" will be .5 when half the total frames load. When they're all loaded, it will equal 1. If you simply multiply this number by 100, you'll get the kind of percentages you expect. Therefore, using percent=_framesloaded/_totalframes*100 is better. Finally, just so you don't have to come back and fix this later, you can eliminate decimal values if you change the expression to an integer (a number with no decimals). The final version should look like this: percent=Math.floor(_framesloaded/_totalframes*100). Notice that the "floor" is calculated (that is, rounding down) by taking everything inside the parentheses to the right.

  5. You're not out of the woods yet. This only tells you what percent has loaded. You want to do two things when the movie is totally loaded: tell the loaded movie to start playing and to stop checking whether it's totally loaded. You know you should still be checking when "waiting" is true, and you know the movie will be finished loading when "percent" is 100. Therefore, insert an "if" Action (either type "esc, i, f" or find if under the plus button Actions, Conditions/Loops). Into the Condition field type waiting==true && percent==100. This code looks for the condition where "waiting" is true and "percent" happens to equal 100. Notice the double equal sign. This is different from the normal equal sign, which performs an assignment (that is, percent=100 will make "percent" equal 100). The double equal sign is a comparison—more like "Does percent happen to equal 100?" Finally, add a simple play Action (that is, if the condition is true, it's time to play the movie). Also, you should turn "waiting" to false so that checking can stop. To do this, add a simple evaluate Action with waiting=false. Figure 19.6 shows the finished version of this code.

Figure 19.6 The finished code attached to the clip into which the movie loads.

  1. Test it out. The movie should work great. If you really want to test it, put it up on a Web server and try it from a slow connection. Note that if you test it twice, it might appear to download instantly the second time. That's because the loaded movie has already downloaded to your browser's cache. Basically, you either have to clear the cache or delete the .swfs from the folder full of downloaded files (for example, Internet Explorer uses C:\WINDOWS\Temporary Internet Files).

Now that you know how to load movies and check to see whether they've totally loaded, it's important to learn how to unload them. There are two basic methods. One, you simply load something else into the movie's place (effectively removing one and replacing it with another). It may not seem very clean to blast one loaded movie away by loading another in its place, but it's good to know you can and that there's no problem doing so. Otherwise, you might find yourself unloading one movie, only to immediately load another movie right away. Two, you can use the Action unloadMovie. The only trick with the unloadMovie Action is that you have to remember the location where you loaded the movie (that is, a target clip or a level number) so that you can unload it from the same location. Other than that, unloading is quite simple.

  • + Share This
  • 🔖 Save To Your Account

InformIT Promotional Mailings & Special Offers

I would like to receive exclusive offers and hear about products from InformIT and its family of brands. I can unsubscribe at any time.

Overview


Pearson Education, Inc., 221 River Street, Hoboken, New Jersey 07030, (Pearson) presents this site to provide information about products and services that can be purchased through this site.

This privacy notice provides an overview of our commitment to privacy and describes how we collect, protect, use and share personal information collected through this site. Please note that other Pearson websites and online products and services have their own separate privacy policies.

Collection and Use of Information


To conduct business and deliver products and services, Pearson collects and uses personal information in several ways in connection with this site, including:

Questions and Inquiries

For inquiries and questions, we collect the inquiry or question, together with name, contact details (email address, phone number and mailing address) and any other additional information voluntarily submitted to us through a Contact Us form or an email. We use this information to address the inquiry and respond to the question.

Online Store

For orders and purchases placed through our online store on this site, we collect order details, name, institution name and address (if applicable), email address, phone number, shipping and billing addresses, credit/debit card information, shipping options and any instructions. We use this information to complete transactions, fulfill orders, communicate with individuals placing orders or visiting the online store, and for related purposes.

Surveys

Pearson may offer opportunities to provide feedback or participate in surveys, including surveys evaluating Pearson products, services or sites. Participation is voluntary. Pearson collects information requested in the survey questions and uses the information to evaluate, support, maintain and improve products, services or sites, develop new products and services, conduct educational research and for other purposes specified in the survey.

Contests and Drawings

Occasionally, we may sponsor a contest or drawing. Participation is optional. Pearson collects name, contact information and other information specified on the entry form for the contest or drawing to conduct the contest or drawing. Pearson may collect additional personal information from the winners of a contest or drawing in order to award the prize and for tax reporting purposes, as required by law.

Newsletters

If you have elected to receive email newsletters or promotional mailings and special offers but want to unsubscribe, simply email information@informit.com.

Service Announcements

On rare occasions it is necessary to send out a strictly service related announcement. For instance, if our service is temporarily suspended for maintenance we might send users an email. Generally, users may not opt-out of these communications, though they can deactivate their account information. However, these communications are not promotional in nature.

Customer Service

We communicate with users on a regular basis to provide requested services and in regard to issues relating to their account we reply via email or phone in accordance with the users' wishes when a user submits their information through our Contact Us form.

Other Collection and Use of Information


Application and System Logs

Pearson automatically collects log data to help ensure the delivery, availability and security of this site. Log data may include technical information about how a user or visitor connected to this site, such as browser type, type of computer/device, operating system, internet service provider and IP address. We use this information for support purposes and to monitor the health of the site, identify problems, improve service, detect unauthorized access and fraudulent activity, prevent and respond to security incidents and appropriately scale computing resources.

Web Analytics

Pearson may use third party web trend analytical services, including Google Analytics, to collect visitor information, such as IP addresses, browser types, referring pages, pages visited and time spent on a particular site. While these analytical services collect and report information on an anonymous basis, they may use cookies to gather web trend information. The information gathered may enable Pearson (but not the third party web trend services) to link information with application and system log data. Pearson uses this information for system administration and to identify problems, improve service, detect unauthorized access and fraudulent activity, prevent and respond to security incidents, appropriately scale computing resources and otherwise support and deliver this site and its services.

Cookies and Related Technologies

This site uses cookies and similar technologies to personalize content, measure traffic patterns, control security, track use and access of information on this site, and provide interest-based messages and advertising. Users can manage and block the use of cookies through their browser. Disabling or blocking certain cookies may limit the functionality of this site.

Do Not Track

This site currently does not respond to Do Not Track signals.

Security


Pearson uses appropriate physical, administrative and technical security measures to protect personal information from unauthorized access, use and disclosure.

Children


This site is not directed to children under the age of 13.

Marketing


Pearson may send or direct marketing communications to users, provided that

  • Pearson will not use personal information collected or processed as a K-12 school service provider for the purpose of directed or targeted advertising.
  • Such marketing is consistent with applicable law and Pearson's legal obligations.
  • Pearson will not knowingly direct or send marketing communications to an individual who has expressed a preference not to receive marketing.
  • Where required by applicable law, express or implied consent to marketing exists and has not been withdrawn.

Pearson may provide personal information to a third party service provider on a restricted basis to provide marketing solely on behalf of Pearson or an affiliate or customer for whom Pearson is a service provider. Marketing preferences may be changed at any time.

Correcting/Updating Personal Information


If a user's personally identifiable information changes (such as your postal address or email address), we provide a way to correct or update that user's personal data provided to us. This can be done on the Account page. If a user no longer desires our service and desires to delete his or her account, please contact us at customer-service@informit.com and we will process the deletion of a user's account.

Choice/Opt-out


Users can always make an informed choice as to whether they should proceed with certain services offered by InformIT. If you choose to remove yourself from our mailing list(s) simply visit the following page and uncheck any communication you no longer want to receive: www.informit.com/u.aspx.

Sale of Personal Information


Pearson does not rent or sell personal information in exchange for any payment of money.

While Pearson does not sell personal information, as defined in Nevada law, Nevada residents may email a request for no sale of their personal information to NevadaDesignatedRequest@pearson.com.

Supplemental Privacy Statement for California Residents


California residents should read our Supplemental privacy statement for California residents in conjunction with this Privacy Notice. The Supplemental privacy statement for California residents explains Pearson's commitment to comply with California law and applies to personal information of California residents collected in connection with this site and the Services.

Sharing and Disclosure


Pearson may disclose personal information, as follows:

  • As required by law.
  • With the consent of the individual (or their parent, if the individual is a minor)
  • In response to a subpoena, court order or legal process, to the extent permitted or required by law
  • To protect the security and safety of individuals, data, assets and systems, consistent with applicable law
  • In connection the sale, joint venture or other transfer of some or all of its company or assets, subject to the provisions of this Privacy Notice
  • To investigate or address actual or suspected fraud or other illegal activities
  • To exercise its legal rights, including enforcement of the Terms of Use for this site or another contract
  • To affiliated Pearson companies and other companies and organizations who perform work for Pearson and are obligated to protect the privacy of personal information consistent with this Privacy Notice
  • To a school, organization, company or government agency, where Pearson collects or processes the personal information in a school setting or on behalf of such organization, company or government agency.

Links


This web site contains links to other sites. Please be aware that we are not responsible for the privacy practices of such other sites. We encourage our users to be aware when they leave our site and to read the privacy statements of each and every web site that collects Personal Information. This privacy statement applies solely to information collected by this web site.

Requests and Contact


Please contact us about this Privacy Notice or if you have any requests or questions relating to the privacy of your personal information.

Changes to this Privacy Notice


We may revise this Privacy Notice through an updated posting. We will identify the effective date of the revision in the posting. Often, updates are made to provide greater clarity or to comply with changes in regulatory requirements. If the updates involve material changes to the collection, protection, use or disclosure of Personal Information, Pearson will provide notice of the change through a conspicuous notice on this site or other appropriate way. Continued use of the site after the effective date of a posted revision evidences acceptance. Please contact us if you have questions or concerns about the Privacy Notice or any objection to any revisions.

Last Update: November 17, 2020