I have been working in flash again! Back working on games again... this time a choose your path game, and it needs to save. To do this I've got a few classes going, and had quite a few errors... Then I ran into this error for seemingly no reason... It clams is in this section,
public class MenuScreen extends MovieClip {
static function checkData()
public function MenuScreen() {
}
static function checkData()
SharedObject.getLocal(userData:string);
// Create a shared-object named "userData"
mySharedObject=SharedObject.getLocal("userData");
More precisely this line:
SharedObject.getLocal(userData:string);
Now theres a bit of code at the top I left off yes, And I can provide the entire code if it will help, But correct me if Im wrong the program isn't making sense! This has happened before, The solution being to completely redo the file, Retype the code, (NOT copy/paste) and Don't allow so many test exports to fail! So I know I've experienced this error as a misstate before. Is it a misstate this time? Thats why Im here... ...
Your code does not looks like an AS3 class and that's not that obvious how it was supposed to look like. At least I can provide you fix with will compile:
class MenuScreen extends MovieClip
{
public function MenuScreen()
{
}
public static function checkData():void
{
// Create a shared-object named "userData"
mySharedObject=SharedObject.getLocal("userData");
}
}
But note that function checkData() is not called.
Related
My goal is:
define a subClass of Sprite called Ship
use an event at runtime to call a function within this new class
It seems that I've figured out how to create my Ship class using a package in a linked .as file. But I can't seem to access the function within that class. Can anyone see what I'm doing wrong?
var ShipMc:Ship = new Ship();
addChild(ShipMc);// This successfully adds an instance, so I know the class is working.
addEventListener(MouseEvent.CLICK, ShipMc.addShip);//But this doesn't seem to run the function
This code works fine for instantiating a Sprite, but the code in the Ship.as file, specifically the function, is not working. No runtime errors, but nothing traced to the output window, either.
package
{
import flash.display.Sprite
public class Ship extends Sprite
{
public function addShip():void
{
trace("running addShip function")
}
}
}
The last time a coded anything in flash it was AS2!
I'll just mention that I've tried using addShip():void and just addShip(). Same response with both. It should be with :void, right? Anyway, the fact that neither one throws, tells me that this section of code isn't even getting read, I think.
Any help is much appreciated! Pulling my hair out.
Your code is not working because it contains some problems, so let's see that.
You should know that you are attaching the MouseEvent.CLICK event listener to the main timeline which didn't contain any clickable object yet now (it's empty), so let's start by adding something to your Ship class to avoid that :
public class Ship extends Sprite
{
// the constructor of your class, called when you instantiate this class
public function Ship()
{
// this code will draw an orange square 100*100px at (0, 0)
graphics.beginFill(0xff9900);
graphics.drawRect(0, 0, 100, 100);
graphics.endFill();
}
public function addShip():void
{
trace("addShip function run");
}
}
N.B: You can attach the MouseEvent.CLICK event listener to the stage, which will work even if you have nothing in the stage.
Now, if you test your app, you'll get an clickable orange square at the top left corner of your stage, but the compiler will fire an error (ArgumentError) because it's waiting for a listener function (the Ship.addShip() function here) which accept an MouseEvent object.
So to avoid that error, your Ship.addShip() function can be like this for example :
public function addShip(e:MouseEvent):void
{
trace("addShip function run");
}
Then your code should work.
You can also simplify things by using another listener function in your main code which can call the Ship.addShip() function, like this for example :
var ShipMc:Ship = new Ship();
addChild(ShipMc);
addEventListener(MouseEvent.CLICK, onMouseClick);
function onMouseClick(e:MouseEvent): void
{
ShipMc.addShip();
}
For more about all that, you can take a look on AS3 fundamentals where you can find all what you need to know about AS3.
Hope that can help.
Tried this,
package {
import flash.display.MovieClip;
import flash.events.*;
public class test extends MovieClip {
public function test() {
addEventListener(Event.ADDED_TO_STAGE, registerBtn);
}
private function registerBtn(e:Event):void {
this.parent["Homebtn"].addEventListener(MouseEvent.CLICK, myButtonClick);
}
private function myButtonClick(e:MouseEvent):void {
trace("CLICKED");
}
}
}
Image
And the same code on frame 1, And there's a MovieClip Button on stage having Instance name "Homebtn".
Imports
import flash.events.*;
Importing all classes from a package that originates in flash has zero impact on compile size because they're already present in the Flash Player runtime environment. It's pure monotony that you're required to explicitly declare these imports, but good practice when dealing with third party packages.
Stage Relationship
Document code (i.e., code in the Flash IDE timelines) have a direct relationship to MainTimeline, whereas class files do not. If you want to add button1.addEventListener(MouseEvent.CLICK, myButtonClick); to your class, you're not going to be able to do so unless you:
A: Pass a pointer to the button/stage/root to the class when instantiating your test class:
var myObj:test = new test(root)
B: Wait to add the event listener until after you've given the test object a parent relationship to the stage from which to traverse to the button:
addChild(test);
inside your class...
public function test() {
// constructor code
addEventListener(Event.ADDED_TO_STAGE, registerBtn)
}
private function registerBtn():void {
this.parent.button1.addEventListener(MouseEvent.CLICK, myButtonClick);
}
Turn on Debugging
To find the cause of your bugs, you need to debug your code. If you're using Flash IDE CS6, then you can enable this by going to your publish settings and enabling "Permit Debugging". This will take your ambiguous error...
null object reference at myDocument/doSomething()
...to a much clearer...
null object reference at myDocument/doSomething() package\myClass.as:20
...which now denotes which line in your code to look for your issue.
Use the Debug Console
Use the debugging compile mode to bring up the Debug Console. This will provide you with an immediate look at the line of code in question, as well as the Call Stack, and the state of all available Variables. No programmer should be without it.
Run by going to the menu "Debug > Debug Movie > Debug", or use the keyboard combo CONTROL+SHIFT+ENTER.
Now that you're armed with the know-how to do this on your own, I'll cover what you'd encounter, and how you'd fix it (since you're new).
First, it's flash.events with an "s". So we'll change that.
Next, compiling it we get the following errors:
So we see on line 7 of our test.as class: you've placed the timeline code into the class.
var myObj:test = new test(root);
addChild(test);
You don't want to instantiate you class from within itself as it'll never get instantiated. Think of your code as a railroad. The train starts with your timeline code, and only runs on the rails set before it. Your class is floating off to the side, ready with all its interesting turns and zigzags, but you have to add it to the rails for it to be actually run. That's instantiation; we're copying that path onto the current track, and the train runs on it.
So, we get rid of lines 6 & 7, and we're left with Access of possibly undefined property Homebtn. Calling this.parent is actually a getter function, and it returns a DisplayObjectContainer. Because AS3 is a strongly datatyped language, the compiler will know that there is no such property "Homebtn" on DisplayObjectContainers (silly compiler). But of course, you know it's there (or at least it will be by the time this code runs). A simple way of getting around that is by making it evaluate the reference at run-time.
this.parent["Homebtn"].addEventListener(MouseEvent.CLICK, myButtonClick);
By encapsulating the button name as a string and within brackets, we've done that.
Now we recompile again, and get the following:
This is because all event listeners receive one argument: an event object. You may not use it, but not having a variable to hold it is a no-no.
private function registerBtn(e:Event):void {
As a final point. All class functions need to be denoted as to what namespace they exist in. myButtonClick needs one, so we'll add it as private since no external (ie., non-class based) functions need access to it.
Here's your revised code:
test.as
package {
import flash.display.MovieClip;
import flash.events.*;
public class test extends MovieClip {
public function test() {
addEventListener(Event.ADDED_TO_STAGE, registerBtn);
}
private function registerBtn(e:Event):void {
this.parent["Homebtn"].addEventListener(MouseEvent.CLICK, myButtonClick);
}
private function myButtonClick(e:MouseEvent):void {
trace("CLICKED");
}
}
}
test.fla (timeline code on frame 1)
import test;
var Homebtn:MovieClip = new MovieClip();
Homebtn.graphics.beginFill(0xFF0000, 1);
Homebtn.graphics.drawRect(0, 0, 150, 25);
Homebtn.graphics.endFill();
addChild(Homebtn);
var testObj:test = new test();
addChild(testObj);
I'm passing some parameters everytime i click a movieclip, and I'm not realising how to remove it
my_mc.addEventListener(MouseEvent.CLICK, someFunct(1,1));
I thought this could work, but it isn't working...
my_mc.removeEventListener(MouseEvent.CLICK, someFunct)
Try stopImmidiatePropagation(); It will stop all evnts
Hope it will help
I don't think that the syntax you posted is actually working, unless someFunct itself returns a function that is the actual event listener (the exception is that Flex has some stuff under the hood that will create the illusion that you can do this). In any case, what you have is more or less an anonymous function if this is remotely working as posted.
The only place you can remove an anonymous function is inside the listener. However, the listener would have to have a more conventional event listener signature (have a single parameter that is the event). Assuming that somewhere in your code there's somebody that looks like that:
protected function someFunct(param1:int, param2:int):void {
return function(e:MouseEvent):void {
e.target.removeEventListener(e.type, arguments.callee);
trace('in listener', param1, param2);
}
}
If you're using Flex, I don't think there's a way to get at where the anonymous function is created to allow the listener to be removed. For more on how this stuff works, try reading this.
I did some testing and figured out how to accomplish this. Below is a test .as main file, just make it the main document class of a new .fla file and run it. You can clearly see it working. As for your exaple, you can just replace this.stage with your movieclip.
package {
import flash.display.MovieClip;
import flash.events.MouseEvent;
public class Main extends MovieClip {
public function Main() {
graphics.beginFill(0x000000, 1);
this.stage.addEventListener(MouseEvent.CLICK, someFunct(1, 1));
}
private function someFunct(p1:int, p2:int):Function {
return someFunct2
}
private function someFunct2(event:MouseEvent):void {
graphics.drawCircle(this.stage.mouseX, this.stage.mouseY, 50);
this.stage.removeEventListener(MouseEvent.CLICK, someFunct2)
}
}
}
If this has not answered your question, please comment back, or edit your question and clarify what you really want. Thank You
(I'm working in AS3 and Adobe AIR for iOS SDK).
The program has two classes: the first one is Program.as which is what the FLA file is linked to. In Program.as there's a function to start the program and another to restart the program. The second class is my Main.as class which calls the finishNow(); function from Program.as to restart the program.
It runs fine on its first run-through. The problem is that nearly as soon as it restarts, it seems to KEEP restarting itself on its own. It gives quite a few ArgumentError: Error #2025: The supplied DisplayObject must be a child of the caller. errors too. I've also noticed that some functions such as TIMERS do not start from 0 again when the program restarts?? I'm really stumped because the logic seems to be okay, but the traces say otherwise.
Putting traces inside Program.as shows that the finishNow(); function is being called repeatedly after the first run. The problem lies with the programRestartTimer not resetting on the new instance. By calling the stop(); function on programRestartTimer temporarily fixes this. From the Error #2025 that keeps showing, I suspect that display Childs which were not removed (or similar – such as other Timers also not resetting) in the first run are causing this problem. This would suggest that either the program is NOT creating an entirely new instance, or it is not possible with AS3??
Program.as:
package {
import flash.display.MovieClip;
public class Program extends MovieClip {
var runMain:Main;
public function Program() {
startNow();
}
function startNow() {
runMain = new Main(this);
addChild(runMain);
}
function finishNow() {
removeChild(runMain);
runMain = new Main(this);
addChild(runMain);
}
}
}
Main.as:
package {
import flash.display.Sprite;
public class Main extends Sprite
{
public var program:Program;
var programRestartTimer:Timer = new Timer(8 * 1000);
public function Main(stageHolderTemp) {
program = stageHolderTemp;
trace(program);
someFunctionsThatDrawGraphics();
moreFunctions();
}
function callFinishFunction():void { // this is called at the end of the animation
programRestartTimer.start();
programRestartTimer.addEventListener(TimerEvent.TIMER, restartProgram);
}
function restartProgram(e:TimerEvent):void {
programRestartTimer.stop(); // this line is a temporary "fix" to stop the program from constantly restarting
// it doesn't actually fix the full problem
program.finishNow();
}
}
}
It sure is possible in AS3 to design a class so that it will be able to re-initialize itself. But this requires carefully devising the restart routine.
First, your callProgramRestart() function adds a listener to the Program instance, but it is never removed, this will cause your program to reset twice after the second call, which is most likely the cause of your remove child errors - you are removing them twice in a row. You can completely eliminate the need of that listener by utilizing flash.utils.setTimeout() (the manual) and targetting it to call restartProgram function.
function callFinishFunction():void { // this is called at the end of the animation
flash.utils.setTimeout(restartProgram,8000);
}
function restartProgram():void {...}
Second, you should do the "full" reinitialization somewhere. Your method of creating another instance of Main class should most likely work, but you should clear your listeners off former Main instance properly before calling this.
UPDATE: OK I am about ready to give up on Pacakages and classes. No answers coming. Not sure what to do. I tried to make the question easier and made a new post but I was down voted for it. as3 calling a function in another class
I am TOTALLY NEW to using PACKAGES and CLASSES. I am finally converting over from the timeline after having so many issues. Please be patient with my lack of knowledge. I need to know how to call a function in the child swf file I loaded from code in the maintime in the parent swf.
There are 2 swf files. Main.swf and pConent.swf
1. Main.swf has code in the timeline of the first frame.
2. pConent.swf is loading a PACKAGE CLASS as file.
QUESTIONS
I am trying to call a function in it from its parent Main.swf. How do I do this?
Here is sections of the code from both. Thanks
Main.swf CODE /// is an AIR for Andrid swf
function LoadContent()
{
TheContent.load(new URLRequest( "pContent.swf"));
TheContent.contentLoaderInfo.addEventListener(Event.COMPLETE, LoadContentTWO);
function LoadContentTWO(e:Event)
{
Content = TheContent.content as MovieClip;
pContent = Content as Object;
addChild(TheContent);
var OSS:String = "device";
trace(pContent); //// comes out as: [object pContent]
pContent.GetOnlineStatus(OSS); ///// HOW DO I GET THIS TO CALL FUNCTION
}
}
A SECTION OF THE "CLASS" in pContent.swf I am trying to call
public function GetOnlineStatus(OS:String)
{
if(OS=="online")
trace("inside ONLINE" );
}
if(OS=="device")
{
trace("inside DEVICE" );
}
}
THE ERROR I AM GETTING
TypeError: Error #1006: GetOnlineStatus is not a function.
UPDATE: I decided to post the FULL PACKAGE ( my first) to see if I am doing it right.
package
{
import flash.display.MovieClip;
import fl.transitions.Tween;
import fl.transitions.easing.*;
import fl.transitions.TweenEvent;
import flash.display.*;
import flash.media.Sound;
import flash.system.*;
import flash.media.SoundChannel;
import flash.display.MovieClip;
import flash.events.MouseEvent;
public class pContent extends MovieClip
{
//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
var ScreenY = flash.system.Capabilities.screenResolutionY;
var ScreenX = flash.system.Capabilities.screenResolutionX;
var swf:String;
var daSounds:String;
var images:String;
var videos:String;
var OnlineStatus:Boolean;
//++++++++++++++++++++++++
//++++++++++++++++++++++++
public function pContent()
{
BG.addEventListener(MouseEvent.CLICK, mouseHandlerdown);
}
//++++++++++++++++++++++++
//++++++++++++++++++++++++
//-------- * FUNCTIONS * --------
//-------------------------------
public function mouseHandlerdown(event:MouseEvent):void
{
alpha = .3; // testing
}
public function GetOnlineStatus(OS:String)
{
if(OS=="online")
{
OnlineStatus = true;
Security.allowDomain("*");
trace("inside THE PATH " + ThePath.text);
daSounds = "http://mycontactcorner.com/upload/files/";
swf = "http://mycontactcorner.com/upload/files/";
trace("inside THE DEVICE ONLINE" );
OnlineStatus = false;
swf = "";
daSounds = "content/sounds/";
//LoadMenu();
LoadStage();
LoadBeau();
}
if(OS=="device")
{
trace("inside THE DEVICE ONLINE" );
}
}
//------ * END FUNCTIONS * -----
//------------------------------
}// END FUNCTION pContent
//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
}//// END PACKAGE
Don't be disappointed, but I won't have a "real" answer to your question, and I am really not going to work through all of your code to solve it, either. It is your own task to learn how to do this, and unless people here are very, very hungry for reputation, no one will do it for you - we will only help you to find the right way.
Your problem is not "packages and classes", so please do not give up on them. They will help you a great deal, once you've started to understand them. Your problem is, that you are not facing a single problem, but actually at least two (and quite substantial ones, I might add):
You need to go back to learn about the basics of object oriented programming in ActionScript. You won't have much luck getting answers to questions like this, otherwise. And believe me, I don't mean that in a patronizing way - it is simply a complicated matter, and it is hard to communicate complicated issues, both when you don't know the terms to express them, or when your counterpart doesn't understand them. Think of it like a high school math problem: You won't ever find a solution to your trigonometry question (or get a decent answer), unless you learn some basic algebra first.
You also have a problem related to loading, application domains, and the Flash Player security model - which are all far more complicated than what you should aim at when trying out OOP stuff. This can be a major obstacle, and unless you want to frustrate yourself, you should try to avoid it, until your program actually runs.
So this here is my advice: Always try to solve one problem at a time. Do not work yourself into such complex scenarios as the one you are in right now, but take step by step, until you've reached a level where you are confident with what you are doing.
Your first issue should be to understand what's going on with classes and objects. Everything else will come later. You should try to isolate your problem in the pContent.swf and get that to work first - or better yet, put everything you need for your program into a single file. Convert to using classes. Then, once you know how to work with those, start learning about more advanced OO, decoupling your code using interfaces, type casting and loading binaries at runtime.
//makes contact with classs but comes out as: [object pContent]
its because you said
pContent = Content as Object;
I am not sure why you are doing this extra step
Change it to this
Content = TheContent.content as MovieClip;
// pContent = Content as Object; //NO NEED OF THIS
addChild(Content); // just in case this gives error change it as addChild(Content as Object);
var OSS:String = "device";
trace(Content); //now see the difference
Content.GetOnlineStatus(OSS); // it calls now
Also, give the link where you posted that scary question :P if it has rest of the code
Sorry if this does not sound like an answer, but I'm going to write a couple of doubts that I have reading your code that can possibly lead to the solution:
Why are you casting it to MovieClip? If you cast it as MovieClip, the compiler it is going to tell you that the method "GetOnlineStatus" doesn't exist, because MovieClip class doesn't have it! I think you have to cast it as pContent
Why are you trying to casting TheContent.content? What is "content"? I had a look to your previous post and I cannot see anything called "content"?
If I ignore my second doubt (TheContent.content issue), I would change the code like this:
Content = TheContent.content as pContent; // your class it's called pContent
addChild(Content);
Content.GetOnlineStatus(OSS); // it calls now
Also, keep in mind that generally it's a good pratice to capitalize name of classes and not variables.
Let me know!
private function GetOnlineStatus
Try making this a public function instead. When it's private it can't be accessed outside the scope of the class that owns it.
I believe that in order to make this work, content property of the Loader. You have to create a reference to the loaded SWF as the class you are trying to call. This class has to be included in the main SWF's project. Then you can call the functions of that particular class in the child.
function LoadContent()
{
TheContent.load(new URLRequest( "pContent.swf"));
TheContent.contentLoaderInfo.addEventListener(Event.COMPLETE, LoadContentTWO);
}
function LoadContentTWO(e:Event)
{
var pContent:GetOnlineStatus = GetOnlineStatus(e.target.content);
addChild(e.target.content); //Assuming that "TheContent was
// declared as var TheContent:Loader , you'd be adding the loader to the stage when I think you actually wanted // to add the content.
var OSS:String = "device";
trace(pContent); //// comes out as: [object pContent]
pContent.GetOnlineStatus(OSS); ///// HOW DO I GET THIS TO CALL FUNCTION
// This should work now. If not, try to loading a function that is not the class' main function. Because I think you might get an "unable to call static function error". I'm a begginner too though, so sorry if I'm wrong. Example: pContent.GetOnlineStatusFunction(OSS);
}
This answer assumes that the pContent.swf contains a class file that looks like this:
package {
public class GetOnlineStatus {
public function GetOnlineStatus (OSS:String) {
//Do your GetOnlineStatus Logic. This is the main function.
}
/*public function GetOnlineStatusFunction (OSS:String) {
//Example non-main function
} */
}
}
Source: http://www.scottgmorgan.com/accessing-document-class-of-externally-loaded-swf-with-as3/