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Creating an Interactive Placeholder

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The great thing about loading external content into an instance that has been scripted in such a way is that even though the instance's content will change, its scripted functionality can remain the same. placeholder_mc._rotation. If you attach this script to the main timeline, the placeholder_mc instance rotates 30 degrees each time the mouse is clicked. This instance can be...

Creating and Referencing Global Elements

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_root.myMovieClip_mc.favoriteGreeting = myVariable;. For example, suppose a movie clip instance in your project has a target path of _root.car_mc.engine_mc.piston_mc. _global.myPiston_mc = _root.car_mc.engine_mc.piston_mc;. myPiston_mc.play();

Creating Arrays

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Think of arrays as supervariables: While a regular variable can only contain a single value, an array can contain multiple values—which means you could store that entire guest list in a single array.. However, you must create an array in order to use it. Here's the syntax to create an array:. var myArray:Array = new Array();. You can populate an...

Creating Custom Context Menus

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Creating Custom Context Menus. The context menu appears when you right-click a Flash movie (Control-click on a Macintosh). Appears when you right-click anything in a Flash movie except a text field.. Appears when you right-click a text field that's editable or selectable.. Appears when a Flash movie fails to load within a Web page and you right-click in the empty...

Creating Dynamic Text Fields and Retrieving Information

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Creating Dynamic Text Fields and Retrieving Information. You compose static text on the stage using the Text tool. Input text fields are generally employed to gather from the user textual information that your movie uses or sends to a server for processing. This type of text field is commonly found in Flash forms.. A dynamic text field is a text...

Creating Filled Shapes Dynamically

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The alpha parameter accepts a number between 0 and 100 to set the alpha level of the fill. It's important to note that when creating a filled shape, the starting point of the shape, as defined by moveTo. must also be the ending point of the shape, as defined by the last lineTo().. The matrix parameter of the beginGradientFill() method...

Creating Functions

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You'll see that the function declaration begins with the word function, followed by the name of the function (which can be anything you choose, as long as it follows typical naming conventions). Following the function name is an area enclosed by parentheses. You can leave this area blank, or you can fill it with information (parameter data) that the function...

Creating Movie Clip Instances Dynamically

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Creating Movie Clip Instances Dynamically. You can create a movie clip instance dynamically by using one of the following methods of the Movie Clip class:. This method duplicates an existing movie clip instance on the stage to create a new instance of that movie clip.. This method creates a new instance of a movie clip directly from the library.. This...

Creating Variables

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When you create variables, you must give them names—monikers you cannot change, though you can alter their contents. var myFullName:String = "Jobe Makar";. The script declares a new variable, associates a data type with that variable, and gives the variable data to store.. After the variable name (the string of letters after var) you add a colon. The Actions panel...

Customizing UI Components With ActionScript

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Following are some of the visual aspects of components that can be changed:. myComponentInstance.setStyle("fontSize", 14);. myComponentInstance.setStyle("borderColor", 0x006633);. myComponentInstance.setStyle("borderColor green");. _global.style.setStyle("fontSize", 14);. We'll insert several lines of code at the end of the existing code on Frame 1.. With the Actions panel open and Frame 1 selected, add the following script at the end of the current script:. listURL_lb.setStyle("fontStyle italic");. listURL_lb.setStyle("color",...

Defining a Boundary

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physical, financial, mental—in the end they're nothing more than an indication of a limit.. if you're approaching the line on the right, you adjust in the opposite direction—conditional logic in action!. if (car_mc._x <. else if (car_mc._x >. Prevent data values from exceeding defined limits (useful when validating data) In the following exercise, we'll dynamically animate the red bars at...

Defining Members

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Using special keywords, members can be. This means that the property or methods of that class can be accessed by instances of that class. are all publicly accessible by instances of the class. shows us setting the value of statePopulation directly. In other words, statePopulation should be a variable that cannot be directly accessed from outside the class definition. statePopulation...

Detecting Collisions

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myBody_mc.onEnterFrame = function. If the movie clip instance to which this event handler is attached (myBody_mc) collides with the movie clip instance named wallOfCotton_mc, pain is set to 0. This movie clip instance contains other two movie clip instances: the red bars, with one flipped horizontally in the opposite direction of the other. Because both of these bars are movie...

Loading and Controlling External Video

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Not only does Flash MX 2004 not need Flash Communication Server when using external video, but it provides some excellent tools in the form of Media components. The clip can be edited separately from the SWFs that use it.. The clip can be progressively downloaded as it plays, making it unnecessary for the entire clip to load before it can...

Determining the Passage of Time

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therefore, if the movie has been open for six seconds, the following script:. would assign playBackTime a value of milliseconds for each second). This is an accurate and precise representation of time based on the user's system clock and is not dependent on the movie's frame rate, the user's processor speed, or whether the movie is playing. This is also...

Differences Between ActionScript 1.0 and 2.0

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Differences Between ActionScript 1.0 and 2.0. If you're familiar with ActionScript 1.0, you'll find that ActionScript 2.0 is similar, yet it has several subtle but important differences. Before we look at these differences, let us first tell you up front that if you want to stick with what you know (programming in ActionScript 1.0), then by all means, do so.....

Dragging a Movie Clip Instance within a Boundary

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Dragging a Movie Clip Instance within a Boundary. Being able to drag the ball movie clip instance around the screen is critical to our project's interactivity. The ball's position onscreen will determine the volume and panning of the bouncing sound. basketball_mc movie clip instance onscreen, however, our scene would not be realistic because the user could drag and bounce the...

Dragging and Dropping Movie Clip Instances

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Dragging and Dropping Movie Clip Instances. In user interfaces, it's sometimes useful to add drag-and-drop behaviors to movie clip instances—a term that refers to the process of clicking and dragging movie clip instances around the stage, so that when they're released (dropped), they'll perform a set of actions determined by the location where they're dropped. The easiest way to conceptualize...

Dynamically Creating and Configuring Text Fields

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To create a text field using ActionScript, you use the createTextField() method, as follows:. Now note the following example, which uses the createTextField() method to create a text field:. This script creates a text field named myField_txt, with its initial depth, x, y, width, and height properties set as shown.. Every text field, whether placed on the stage while authoring...

Eliminating Bugs Before They Hatch

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Writing code is not something you want to do while half asleep. Seemingly tiny errors such as a faulty line of script or even a misspelled word can have a damaging domino effect on the rest of the code in your project. Most problems can usually be solved by a tap on the Backspace key. But if errors are hidden...