Difference between revisions of "Actionscript 3 Sandbox"

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*[http://www.bytearray.org/?page_id=82 interesting collection of as3 classes]
 
*[http://www.bytearray.org/?page_id=82 interesting collection of as3 classes]
 
* http://www.bytearray.org/?page_id=82
 
* http://www.bytearray.org/?page_id=82
 +
 +
== Basics of AS3 ==
 +
 +
OPTION F9 == Actions Panel
 +
 +
* The difference between AS2 and AS3:
 +
<pre>AS2:
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my_MC.createTextField("instance_name", 10,0,0 Stage.width, 22);
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my_MC.attachMovie("MC_name", "moviename_mc, this.getNextHighestDepth());
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10,0,0,Stage.width == dimensions
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22 == depth
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 +
Versus AS3:
 +
var myText:TextField = new TextField();
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var myMC:MovieClip = new MovieClip();
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now in AS3 you dont have to createTextField or attachMovie, and you can define all the variables later.
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</pre>
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 +
* select the property (highlighted in blue in the Actions panel), and press F1 to see a help menu telling you about what values the property can have.
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* strings must be in quotation marks (var userName:<DataType> = "Data";)
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* you assign data type to the variable so you dont lose track of what it is.
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* trace(variableName);
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* trace("long text comment");
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* function thing():void - the void means no return argument
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* <pre>function moveObj(thing:MovieClip):void {
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thing.y -= 50;          // mc moves 50px up
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thing.rotation += 45; // mc rotates 45 degrees right
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}
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moveObj(thing1_mc);</pre>
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* <pre>function moveObj(thing:MovieClip, movement:Number, rotationAmount:Number):void {
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thing.y -= movement;          // mc moves 50px up
 +
thing.rotation += rotationAmount; // mc rotates 45 degrees right
 +
}
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moveObj(thing1_mc, 50, 45);</pre>
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* <pre>function moveObj():Number // the number here defines what kind of thing is returned
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{
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thing1_mc.y -= 50;
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thing1_mc.scaleY = 2;
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return thing1_mc.y;
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}
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border2_mc.y = moveObj();</pre>
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* events must have listeners

Revision as of 03:45, 5 July 2009

AS3 brings the core language aspects of AS2 into complianace with ECMAScript standard (the international standardized programming language for scripting).

Basics of AS3

OPTION F9 == Actions Panel

  • The difference between AS2 and AS3:
AS2:
my_MC.createTextField("instance_name", 10,0,0 Stage.width, 22);
my_MC.attachMovie("MC_name", "moviename_mc, this.getNextHighestDepth());
10,0,0,Stage.width == dimensions
22 == depth

Versus AS3:
var myText:TextField = new TextField();
var myMC:MovieClip = new MovieClip();
now in AS3 you dont have to createTextField or attachMovie, and you can define all the variables later.
  • select the property (highlighted in blue in the Actions panel), and press F1 to see a help menu telling you about what values the property can have.
  • strings must be in quotation marks (var userName:<DataType> = "Data";)
  • you assign data type to the variable so you dont lose track of what it is.
  • trace(variableName);
  • trace("long text comment");
  • function thing():void - the void means no return argument
  • function moveObj(thing:MovieClip):void {
thing.y -= 50; // mc moves 50px up thing.rotation += 45; // mc rotates 45 degrees right } moveObj(thing1_mc); 
  • function moveObj(thing:MovieClip, movement:Number, rotationAmount:Number):void {

thing.y -= movement; // mc moves 50px up thing.rotation += rotationAmount; // mc rotates 45 degrees right }

moveObj(thing1_mc, 50, 45); 
  • function moveObj():Number		// the number here defines what kind of thing is returned

{ thing1_mc.y -= 50; thing1_mc.scaleY = 2; return thing1_mc.y; }

border2_mc.y = moveObj();
  • events must have listeners
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