Is it possible to rename a class-instance that has already been created with a specific name?
For instance:
// Step 1) Create and name class-instance
var myClassInstance_1:myClass= new myClass();
// Step 2) Change name of myClassInstance_1
?????
In actions script 3.0 I would like to retrieve the class of two instances and then compare them. Is there a way to know what class an instance is made of?
View 1 RepliesI am completely new to actionscript although I do come from a OOP background. I have been asked to trial Flash and Actionscript 3 in particular - so I do come with a few preconceptions on how I expect actionscript to behave. I have a problem I donot understand. I have created a new class and to test it I use a simple test harness in the form of a .fla file.
The issue I have is when I create a new instance of the class and assign it to a variable, subsequent background changes to that instance of the class are not 'picked-up' when referenced through the variable. I would expect that given instance of class could be assigned to many different variables and any updates using one variable would accessible using any of the other variables.
[code]...
I'm building a small game. On my document class i create a instances of the class Character and Level with the following code:
//add the Level
level = new TileGrid();
level.y = 100;
[code].....
I am wondering if it's better to pass an instance of a whole class to another class or just specific properties of that class. For example if I want the height property of class A in class B do I pass just the height value into class B or the whole instance of the class and use classA.height in class B?
View 3 RepliesI'm having a little trouble with the properties of an instance of a specific class. Here's and example of the code I am using:
Code:
package {
import flash.display.MovieClip;
import flash.events.*;
public dynamic class Circle1 extends MovieClip {
private var _root:Object;
[Code] .....
This is in the class code for Circle1. Now here is the error that is being displayed int he Output Box when I try to run the file:
Code:
TypeError: Error #1010: A term is undefined and has no properties.
at Circle1/eFrame()
Here's the code that creates the two class instances as children on the Main Time Line:
Code:
if (spaceDown) {
var newCircle1:Circle1=new Circle1();
addChild(newCircle1);
} if (enterDown) {
var newCircle2:Circle2=new Circle2();
addChild(newCircle2);
}
EnterDown is a defined variable for the key press of Enter, and spaceDown is a defined variable for the key press of Space.
I have this main (document class) in a Flash project:
package {
import flash.display.MovieClip;
import flash.events.Event;
[Code]....
Now: if I pass a reference (ref) of the main class to Other and I add clippo as you can see in the first case, I can reference the movieclip clippo from the main (getChildAt(0) is "clippo" from the main). But, is there any way to use the second method (no ref) and do the same from the main class? I can see clippo onstage when Other creates it but I can't understand where clippo "lives" into the DisplayList.
How do you access an instance of a symbol created and added to the stage through the addChild(); method, from a different class?
View 3 RepliesI've been playing around with custom classes. My objective was to create a custom class (Testing) that would create a box when an instance of the class is created. I've tried three different approaches, however only (3) seems to be showing up. I'm just curious why (1) or (2) doesn't work?
Also is there a better approach than (3)? Since at the moment it's been created on _root. I hope the box can only be accessible through the instance. Since I'd like to incorporate the whole idea of public, private, encapsulation, etc.
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I have a class ErrorMessages which holds all my error messages as static constants. So I could access them like ErrorMessages.PASSWORD_INVALID or ErrorMessage.PASSWORD_TOO_SHORT. I want to know if it is possible to have separate classes that hold subset of these constants and access them like ErrorMessages.PASSWORD.INVALID or ErrorMessages.PASSWORD.TOO_SHORT, etc. This way I can more structured static structure and makes it much easier to use autocomplete. I tried few different ways and couldn't figure out if this was possible..
View 3 RepliesI have a base class which is being created via remote_object [RemoteClass alias] from the server.I have other specialized classes that are derived from this baseclass, but serialization with the server always happens with the base class.The base class has meta data that defines what the derived class is, for example
[RemoteClass (alias="com.myco...')]
public Class Base
{
[code]....
FDT can do it, but half the time it times out and needs to be restarted on renaming some objects. Can Flash Builder do this?
View 1 RepliesWhen an instance variable is constructed by a constructor method, why do you need to refer to the current instance variable being created when its the only one being created? I understand assigning an expression to it but why name it "this." when it is the only object that the constructor is building? Does it have some hing to do with being able to naming that object in the Local Variable? In other words am I creating a generic object that will be named in another class?
View 7 RepliesI'm using a library that has a function that returns an instance of some class Engine.
I'd like to tack on some interfaces to Engine, so I subclass it class InterfacedEngine extends Engine implements AwesomeInterface. but when I change the code that uses the classes from this:
var engine:Engine = generateEngine();
to this: var interfacedEngine:InterfacedEngine = generateEngine();
It gives me a runtime error (elision mine):
TypeError: Error #1034: Type Coercion failed: cannot convert ...::Engine@1bc2bf11 to ....InterfacedEngine.
What about AS3 classes am I misunderstanding?
I have to admit I pretty much ran away from Flash when AS2 came along and only used it for animation purposes over the last 5 years.So I'm having a major crash course in AS3 in Flash CS3 and I'm not enjoying it one bit. I'm getting maybe 10mins of finished work per hour as I try to figure out the limits and rules of AS3. Quite often it seems that AS3 simply can't do what I want it to. Anyway: Characterchecks.as is the main class and it loads a bunch of XML into four arrays. The file starts like this:[code]If I trace the value of, say, cc._Categories from the main FLA, it's empty. I'm guessing that the next line of AS in the main FLA doesn't wait for the previously called function to complete? (This may tie in to my next problem)My next step is that I want to display various things based on the data in the array. I have another class, Display.as which will hold all the functions to create the items on display. I thought it would be best for these to be a separate object. I wonder if I'm right?
So I declare an instance of Characterchecks in the main FLA and call it cc, and then run the functions to populate the arrays... Now I create an instance of Display and call it cd. How can I get functions in cd to see the values of the variables in cc? And if the main timeline can't tell that the functions aren't finished filling the arrays, how is cd supposed to know?I might be asking dumb questions, or maybe I'm doing things ***-backwards, I don't know. I'd appreciate any help, I really would. This whole thing has me at the end of my tether... being the most technically advanced person in my circle of co-workers and web design friends means I have no-one to explain why things need to be done a certain way or what the best way is.
I'm creating a little game - The player controls a character that follows the mouse. Pigs run away from the player, and the player has to get them all into a pen. To make the game a little more difficult I'm trying to add an enemy - wolves, that attempt to perform a 'hunt' method every x seconds. This method sends a reference of the wolf instance to Main (my document class) and Main then loops through the pigs on stage to see if there's any nearby. Now as far as I know this works - my problem is I'm unsure how to send the pig instance reference back to the wolf that called the hunt method, so it can then 'target' the pig, and then attempt to pounce on it.
This is my Wolf class:
Code:
package
{
import flash.display.MovieClip;
import flash.events.Event;
[Code].....
Quick question. I have been Googling this all morning, but it's either not there, or else written in a way that doesn't register. I am inclined to believe the latter, as this seems like it should be something completely trivial to me. I made a small Flash file using AS 3.0, and this is the first time I've really been able to stick to the OOP way of doing things and not hack together a mix of stuff from the timeline to get around not having everything work in the classes.
So I'd like to keep it that way, but one thing is eluding me: I can't call a method of an instance of another class (than the one I'm calling from) without resorting to "DocumentClass(root).instanceName.method." Intuition tells me there has to be a better way of doing this (like, without having to reference the document class every time I call another class instance's function; and CERTAINLY without having to use the word "root" - that just seems so Flash 5 to me. Does anybody have a better way of doing this that they can share?
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I have a general / somewhat newbie question. Is it better practice to call a function from another class like so:
[Code]...
Does one way free up more memory or enhance performance?
For AS 3
I have a class which crate a panel with close button. and i create an instance of this class like this
function _smallThumbClick(evt:MouseEvent):void {
var _popup:Popup=new Popup( square.width ,evt.currentTarget.y, evt.currentTarget);
addChild(_popup);
}
and this mouse event from the thumbnail(suppose), so if i click on the thumb it will create popup. so i want to close all other or previously opened pop window.
How do u get the popup class object to close from another class..
or is there any alternate method for detect instance of the movieclip or class..
on my timeline i create a new instance of the class FirstClass with the following
code:
var firstObject:FirstClass = new FirstClass();
the class looks like this:
package {
public class FirstClass extends MovieClip {
public function FirstClass() {
[Code]....
On my timeline i would like to acces the x position of the object tempObject
how to control dynamically created clips... What I've got is a series of objects on the stage, that have been created using an external xml file. here's the code for this...
Code: Select allfor each (var MenuItem:XML in myXML..MenuItem) {
code for setting the clips on the stage, positioning them, etc, } But what that doesn't do is give each clip an individual instance name, so I've no way of controlling them on the stage? I presume I need to create a variable and then loop through the MenuItem xml assigning a unique instance as it goes through it?
I am trying to use a for loop, to place 5 instances of the same movieclip on the stage. In the loop I used .name to give each movieclip a unique instance name. But when I try to reference one of those instance names in an event listener I get an error. Here is an example of what I am trying to do:
Quote:
var xPos:int = 120;
var yPos:int = 60;
for (var i:Number = 1; i<=5; i++) {
[Code].....
This code generates an error saying that the cStar2 property is undefined. In the example above, does the for loop create 5 copies of the movieclip starC_moov, and give them unique instance names cStar1, cStar2, cStar3, cStar4 and cStar5?
Im dynamically creating an instance of a movieclip, call it a game piece. This game piece has 4 frames, each with a movieclip called base(although one is red, one blue, one green, one yellow). When the game piece is created I set the frame to indicate player color. Im also changing the alpha of base to 1.0 when its being dragged, 0.5 when its dropped.
Using the following code, everything works fine if the game piece color is set to the base in frame 1 (red). If the game piece is created and the timeline moved to a frame other than 1, I throw an error when trying to access base.alpha (this would be the second, third, and fourth instances of base in the game piece timeline). Heres the strange part, this is only a problem when the game piece is first created and added to the display list. Once created, even after the error has been thrown, I can access the alpha of bases 2, 3, and 4 in the drag start/stop listeners. Heres a link to the work in progress, and the relevant sections of code (shortened for brevity, t1 is the top left piece on the pallet, others just repeat the same code):[URL]
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Is it possible to get dynamically created children of a display object instance in action script 3?
Example
trace(_view.getChildByName("name")) = returns name of display object (success)
trace(_view.getChildByName("name").getChildByName("name2") = returns error 1061
I am trying to use a for loop, to place 5 instances of the same movieclip on the stage. In the loop I used .name to give each movieclip a unique instance name. But when I try to reference one of those instance names in an event listener I get an error. [code]...
View 1 RepliesI'm making a tile based game in AS3. Now I need to check a collision between the player and each tile (which are created in an array with 300-something instances).
I want to do that in my Main class. The player is in a class called Level and the tileArray is in another class. When I execute, I get the classic #2007 error - "Parameter hitTestObject must be non-null".
MAIN
public function checkCollision():void{
if(_level._tileSetBMP._tileArray[0] == null){
_level._tileSetBMP._tileArray[0] as flash.display.DisplayObject;
[Code].....
What can I do to make a hitTest with each of the [0]-instances of the array?
Without trying to explain the odd issue i am seeing, is this possible?
View 9 Repliesi tried to jump to the root and then to sepecific label and if in that label in the root enter in a instance my cod eis something like this.
[Code]...
If you once run an ObjectBuilder the object instantiated will be cached and next time you use an PropertyInjector or something else, the instantiated object will be used instead of creating a new object. Or at least this should be like this :) But in the example below it seems that mate tries to instantiate the object again: The following error occurs:
[Code]...
Im trying to use an AS3 modification of gskinner's collision detection class, but this being the first custom class i've ever tried to implement, i dont what i'm doing.How do i implement it into my flash? Do I just put it in the same folder as my .fla and .as?Do i have to initiate it in the main class?From what i understand it creates a rectangle, what would i need to turn it into a simple true/false?
View 2 Replies