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Understanding event types

From: ActionScript 3.0 in Flash CS3 Professional Essential Training

Video: Understanding event types

In this movie I'll explain what events are. If you'd like to follow along, you can open up Understanding_Events in the chapter 04 folder. So let's take a look at this example here. On the left side we have an event and that would be a radio station broadcasting a signal. Now when a radio station broadcasts a signal not every radio automatically hears that signal. You have to tune in your radio to a particular station to listen for what that station is broadcasting. That's exactly the same as an event in Flash. An event in Flash is something that happens, whether the user clicks a button or a file finishes downloading etc. etc. etc. We're going to cover all kinds of events in this chapter.

Understanding event types

In this movie I'll explain what events are. If you'd like to follow along, you can open up Understanding_Events in the chapter 04 folder. So let's take a look at this example here. On the left side we have an event and that would be a radio station broadcasting a signal. Now when a radio station broadcasts a signal not every radio automatically hears that signal. You have to tune in your radio to a particular station to listen for what that station is broadcasting. That's exactly the same as an event in Flash. An event in Flash is something that happens, whether the user clicks a button or a file finishes downloading etc. etc. etc. We're going to cover all kinds of events in this chapter.

But events are basically things that happen. On the right side of the screen we have a listener, and that would be our radio. Until we tell our radio to listen, or to tune in to a particular station, we do not hear what that station is broadcasting. So when I click the listen button, the radio then hears what is being broadcast and can do something, can project it out. So we have two things here: events are things that happen and listeners are things that listen for events that are happening.

Now that you understand what events and listeners are, let's get some practice writing them in the next movie.

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  1. 2m 3s
    1. Introduction
      39s
    2. How to use the exercise files
      1m 24s
  2. 3m 53s
    1. Why you should learn ActionScript 3.0
      52s
    2. Differences from ActionScript 2.0
      1m 56s
    3. Moving beyond Script Assist
      1m 5s
  3. 21m 57s
    1. Communicating to MovieClips
      4m 7s
    2. Modifying MovieClips properties
      7m 0s
    3. Understanding variables
      50s
    4. Setting variable data types
      3m 23s
    5. Using trace statements
      2m 39s
    6. Using comments
      3m 58s
  4. 26m 3s
    1. Understanding functions
      1m 23s
    2. Using functions
      2m 27s
    3. Writing custom functions
      4m 25s
    4. Making a function modular
      11m 50s
    5. Making a function return a value
      5m 58s
  5. 41m 45s
    1. Understanding event types
      1m 28s
    2. Using a listener to catch an event
      3m 14s
    3. Writing event handlers
      6m 56s
    4. Responding to mouse events
      4m 33s
    5. Responding to keyboard events
      5m 45s
    6. Creating a link to a website
      5m 26s
    7. Using the enterframe to create animation
      7m 34s
    8. Using the timer event to control animation
      6m 49s
  6. 44m 32s
    1. Understanding classes
      1m 48s
    2. Writing a custom class
      4m 21s
    3. Extending an existing class
      2m 16s
    4. Understanding methods
      2m 11s
    5. Public vs. private properties and methods
      2m 46s
    6. Bringing a class object to the timeline
      14m 16s
    7. Defining a document class
      8m 13s
    8. Setting up a classpath
      6m 20s
    9. Creating useful classes
      2m 21s
  7. 36m 4s
    1. Understanding conditional statements
      1m 36s
    2. Writing a conditional statement
      4m 40s
    3. Understanding conditional operators
      1m 37s
    4. Using conditional operators
      4m 49s
    5. Setting up alternate conditions
      4m 43s
    6. Writing compound conditions
      4m 22s
    7. Understanding loops
      1m 30s
    8. Creating a code loop
      2m 58s
    9. Using a loop to generate instances of a class
      3m 44s
    10. Placing loop-created instances
      6m 5s
  8. 12m 49s
    1. Understanding the math class
      1m 5s
    2. Using basic math operators
      1m 46s
    3. Generating random numbers
      2m 15s
    4. Using different techniques to round numbers
      7m 43s
  9. 56m 20s
    1. Creating a text field
      3m 27s
    2. Styling a text field
      6m 28s
    3. Capturing data from a text field
      7m 38s
    4. Loading external text
      8m 25s
    5. Scrolling a text field
      5m 14s
    6. Understanding arrays
      9m 48s
    7. Using text and arrays to create a game
      8m 24s
    8. Finishing the text game
      6m 56s
  10. 1h 9m
    1. Storyboarding your application effectively
      3m 13s
    2. Writing a memory card class
      5m 57s
    3. Writing a memory game class
      3m 51s
    4. Adding graphics to cards
      9m 20s
    5. Placing cards
      7m 33s
    6. Detecting matches
      8m 40s
    7. Resetting cards
      4m 53s
    8. Handling incorrect matches
      5m 14s
    9. Determining a win
      3m 51s
    10. Adding additional cards
      6m 47s
    11. Randomizing cards
      10m 17s
  11. 36m 30s
    1. Drawing with code
      8m 12s
    2. Creating a color change
      5m 20s
    3. Generating a random color change
      6m 58s
    4. Animating a color change
      4m 50s
    5. Using filters
      3m 30s
    6. Modifying filter properties
      4m 13s
    7. Animating filters
      3m 27s
  12. 51m 50s
    1. Loading external images and Flash movies
      4m 1s
    2. Communicating to loaded movies
      6m 31s
    3. Loading sound
      4m 6s
    4. Starting and stopping sound
      6m 18s
    5. Pausing and resuming sound
      9m 46s
    6. Managing the volume of sound
      5m 41s
    7. Understanding Flash video connections
      1m 0s
    8. Loading video
      5m 33s
    9. Controlling video playback
      8m 54s
  13. 45m 54s
    1. Overview of creating a drag-and-drop game
      57s
    2. Creating drag-and-drop class
      12m 7s
    3. Detecting collisions
      8m 44s
    4. Responding to collisions
      9m 1s
    5. Detecting a win
      4m 2s
    6. Adding drop shadows
      3m 43s
    7. Randomly placing objects
      7m 20s
  14. 23s
    1. Closing
      23s

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