I'm trying to use ExternalInterface as I normally would and access public functions of an .as file (connect.as) from main.swf. I can make the swf with zero errors but I'm not seeing logs and functions...
for example there is a function called create
public function create(webSocketId:int,url:String,protocols:Array,proxyHost:String=null,proxyPort:int= 0,headers:String=null):void {
I try to call it even from within connect.as
create(0,'ws://mysie.com:8004',undefined,undefined,undefined);
Ps: i have checked that the above code is normally what is passed in.
main.swf << I've given the document the class of connect.as
connect.as:
package net.gimite.websocket {
import flash.display.Sprite;
import flash.external.ExternalInterface;
import flash.system.Security;
import flash.utils.setTimeout;
import mx.utils.URLUtil;
ExternalInterface.call('consol.log',"flash hello");//<----not working
public class WebSocketMain extends Sprite implements IWebSocketLogger{
//there are lots of public functions I'm trying to access from main.swf in here
main.swf doesn't like line two in this attempt:
import connect;
var connect:Connect = new Connect();
connect.create(10,'ws://mysite.com:8004',undefined,undefined,undefined);
Scene 1, Layer 'Layer 1', Frame 1, Line 2 1026: Constructor functions must be instance methods.
Place ExternalInterface.call('consol.log',"flash hello"); inside constructor of class WebSocketMain or inside any other functions as Placing it outside the class doesn't make sense.
Related
So im trying to understand how I can call a function from one class from another class. Im getting a few errors and am wondering if someone can explain what im doing wrong here.
Main file:
package code {
import flash.display.MovieClip;
import flash.events.*;
import code.*;
import code.functions.*;
public class Main extends MovieClip {
public var _playerHP:Number;
public var _enemyYellow:EnemyYellow;
public function Main() {
_enemyYellow = new EnemyYellow;
_playerHP = 10;
_playerHPdisplay.text = _playerHP.toString();
trace("loaded")
}
public function lowerHP ():void
{
_playerHP -= 1;
_playerHPdisplay.text = _playerHP.toString();
trace(_playerHP)
}
}
}
Second File:
package code.functions {
import flash.display.MovieClip;
import flash.events.*;
import code.Main;
public class EnemyYellow extends MovieClip {
public var _main:Main;
public function EnemyYellow() {
_main = new Main;
_main.lowerHP();
trace ("test")
}
}
}
It will then load with a blackscreen and the following error:
Error: Error #2136: The SWF file file:///test/Main.swf contains invalid data.
at code.functions::EnemyYellow()[test\code\functions\EnemyYellow.as:15]
at code::Main()[test\code\Main.as:16]
Error opening URL 'file:///test/Main.swf'
However, If I remove _enemyYellow = new EnemyYellow; from the Main file it loads but the second file is not loaded.
If I remove _main = new Main; from the Second file, the game again loads but it does not call the lower HP function, and I get the following error
TypeError: Error #1009: Cannot access a property or method of a null object reference.
at code.functions::EnemyYellow()[test\code\functions\EnemyYellow.as:16]
at code::Main()[test\code\Main.as:16]
If anyone could help me it would be appreciated. Im just trying to get my head around how to call a function from another file..
_playerHPdisplay.text is also a text box on the stage when the game loads.
If you do not assign a value to _main, it is null. That's why you receive the #1009 if you do not assign new Main() to it.
However, you do not want to create a new Main object either.
The main class represents the application and generally speaking you do no explicitly instantiate it in your project.
To make your code work, you have to pass a reference of Main to the enemy class.
A better approach to this is to let the enemy class dispatch events, so that the Main class can be notified "some damage was dealt". This however will not work from within the constructor of enemy.
Think about whether your package names make sense. Pretty much all packages contain code, which makes "code" a not very informative name. The package "functions" contains the class EnemyYellow, which doesn't seem to be a good fit.
I have a class which extends MovieClip. This class has an update() function which needs to be called every new frame with the deltaTime in the arguments. This works if the class has been declared but not if it has just been added to the display list.
Code in the main class:
package packageFoo{
import flash.display.MovieClip;
import packageFoo.customMovieclip;
public class Main extends MovieClip{
public function Main():void{
var testMc:customMovieClip = new customMovieClip();
addChild(testMc);
testMc.update(dt);
}
}
}
This outputs the correct values where as if I just added it without referencing it:
package packageFoo{
import flash.display.MovieClip;
import packageFoo.customMovieclip;
public class Main extends MovieClip{
public function Main():void{
addChild(new customMovieclip());
this.getChildAt(0).update(dt);
}
}
}
This makes the compile time error: 1061: Call to a possibly undefined method update through a reference with static type flash.display:DisplayObject.
I can't really reference the 'customMovieclip's because I am wanting multiple ones.
It looks like this.getChildAt(0) is not customMovieClip. This can arise if your Main has pre-places components at design time. To check, do trace(this.numChildren) as the first line of Main() constructor. And also, to address any subclass methods properly, you need to typecast your DisplayObject returned by getChildAt() to a proper type.
(this.getChildAt(0) as customMovieClip).update(dt);
Still, using a class-wide variable is better if you want to address that custom MC in more than one function of main class.
If you're trying to avoid a reference to the custom class in the document class, you can call it like this:
this.getChildAt(0)["update"](dt);
I've got this class where I declare two public static constants:
package com.xxx.videoplayer_v2 {
import flash.display.DisplayObject;
import flash.display.MovieClip;
import flash.events.Event;
import flash.events.MouseEvent;
import flash.geom.Rectangle;
import flash.text.TextField;
public class ControlBar extends MovieClip
{
public static const VOLUME_PRESSED:String = "volumePressed";
public static const PLAY_PRESSED:String = "playPressed";
...
The declaration looks good to me but when I call the constants from any other class in my project (below an example from the stage)
import com.xxx.videoplayer_v2.ControlBar;
trace(ControlBar.PLAY_PRESSED);
I get this error:
1119: Access of possibly undefined property PLAY_PRESSED through a
reference with static type Class.
Why does this happen? I've done this thousands of times with other classes, with the same syntax but I've never had this problem before.
I figured it out!
I have an instance of ControlBar on the stage wich in its properties I exported for ActionScript.
The problem was this: I filled in the Class textfield exactly the same name as the base class (ControlBar) and in the Base Class textfield I inserted "com.weborama.videoplayer_v2.ControlBar" which is right.
I fixed filling in the Class textfield "VPControlBar" instead of "ControlBar".
Now I know that I can't put the same name of the base class in there.
Thanks to everyone who tried to help me!
I am trying to call a function which is set inside a class..
How can I call that?
Here is my source, and I would like to call 'processLogin' from outside this class.
Link to source: http://pastebin.com/aFygyXKZ
You can create a new instance of your class main.
Try
var m:main = new main();
m.processLogin();
Also, AS3 best practices state that classes should begin with an Uppercase letter.
You also should extend Sprite instead of MovieClip for DisplayObject classes that do not need timeline functionality.
If you know you are only going to have one instance of the class main in your application, what you can do is:
Implement class main as a singleton class, in which case you
can access the processLogin method using
main.getInstance().processLogin or
Just add a public static
variable to your main class containing the instance of your main
class. In this instance your code would look something like:
package actions {
import flash.display.MovieClip;
import flash.events.*;
import flash.net.*;
import flash.text.*;
public static var instance:main;
public function main(){
instance = this;
}
//The rest of your main class code...
}
That way, you can access your processLogin function using main.instance.processLogin().
However, if your application is set to possibly have more than one instance of your main class, then the best approach would be to instantiate main and use that instance, as f-a suggested.
I must be missing something simple here, but in my main app, I import my Pages class, which in turn imports and dynamically instantiates one of two page types. Unfortunatley it only results in the error: ReferenceError: Error #1065: Variable PageA is not defined. (when I call Pages.load("A");)
Pages
package pages
{
import pages.PageA;
import pages.PageB;
import flash.display.Sprite;
import flash.utils.getDefinitionByName;
public class Pages
{
public static function load(pageType:String):void
{
var pageClass:Class = getDefinitionByName("pages.Page"+pageType) as Class;
}
}
}
PageA
package pages
{
import flash.display.Sprite;
public class PageA extends Sprite
{
public function PageA()
{
trace("PageA init");
}
}
}
PageB
package pages
{
import flash.display.Sprite;
public class PageB extends Sprite
{
public function PageB()
{
trace("PageB init");
}
}
}
Exactly, the compiler plainly didn't include those classes in the compiled SWF. I've hit this wall somewhere before, when I've tried instantiating via generated string (in my case 'Gem'+an integer), and received about the same error. I went around it by creating a dummy constant, enumerating all the classes I plan to use, this made the compiler aware of this. So, make the following:
private static const PAGES:Array=[PageA, PageB];
And compile. Should do. Also, you don't need to import parts of "pages" package, they are already visible in your project, since your "Pages" class belongs to the same package.