ActionScript 3.0 :: Test If Function Exists In Object?
Mar 3, 2009can I check if a movieclip has a function to call it just when it exists?
View 1 Repliescan I check if a movieclip has a function to call it just when it exists?
View 1 RepliesI have an input field that asks for a .swf name - you enter the name, hit SUBMIT, and Flash loads that .swf onto the screen.I've coded for an error to appear if the user doesn't input anything, but how to I test to see if the swf exists, and if not, return an error?I have a function called onSwfLoad that runs when the swf loader finishes, triggered by anEvent.COMPLETE in the swf loader event listener - is there something I can put in an if statement there to test if the swf loader found a file?
View 5 RepliesI know you can use IO_ERROR when trying to catch images or swf's that don't exist ..but what about zip's? Would you try to load each zip and then somehow cancel it after a couple bits have been loaded? I don't know if that's even possible.Is this something that has to be done with a server side language?
View 2 RepliesThis is something I would think would be easy, but here's my dilemma: I am trying to see if a textfield exists on the stage and if it does, I want to remove it. I am trying to do it using the code below, but if the textfield doesn't exist I get an error because I'm tring to remove something that isn't there.
if (stage.contains(cctextBox)) {
removeChild(cctextBox);
}
[code].....
I am developing an application that needs to test if a stream exists, the logic is as follows:
Open a page and my SWF is passed a variable, this will be the stream nameNow I want to test if that stream name is publishingIf it is, my SWF will open that stream and play itIf it is not, it will play a pre-recorded media file What is the syntax of this check and does it require some server side coding?
Is there a way in flash to check to see if a function/method exists before calling it?
I tried something like if(typeof object.methodname == "function") and it didn't like it.
the example is this, wich i am trying to remove a movieClip wich is 'mc' by clicking button, but after i click it, the object mc is still traced every time the startTrace initiates, that means its still there right? im using flash cs4,
Quote:
var mcRef;
var mc:MovieClip = new MovieClip();
this.addChild(mc);
mc.name = 'mc';
[Code].....
In my script I create a button that when clicked, creates a blue square. However, I want to remove any blue squares that exist before creating the new square (because as it is a low opacity square creating another one will make it more solid, as well it's just more objects that the system has to keep track of).Here is my code:.as
ActionScript Code:
package{
//importing required classes for this to work
[code].....
I have done some reading up on it and could use some further clarification if anyone has a few moments to enlighten me. I would like to understand how paths work inside a function. Question 1: Is it possible for a function to discover what movieclip it exists in? When i trace(this) within my actionscripted function it returns object Object. (sorry code is on another machine)
Question 2: When I am attaching a function to _level0.myMainClip.mySubClip from _level0 timeline in actionscript and I use "this" within that function am I refeering to _level0.myMainClip.mySubclip? or the function within that movieclip or _level0 since that is where I am creating the function?
why this does not work? There is an empty Canvas and a Button. When the button is clicked, it creates a new Image and adds it to the Canvas - which happens. But when I click on the Image to drag it, Flex throws this error.1009: Cannot access a property or method of a null object reference.
[AS]
import mx.controls.Image;
import flash.events.MouseEvent;
var layerIDs:uint = 0;
[code]....
I'm trying to:Jump from frame 1 to a frame later in the main timeline Reference an object that exists on the stage in that frame, but not in frame 1
Like so:
ActionScript Code:
function endGame():void {
gotoAndPlay("gameOver");
scoreField.visible = false;
}
A movieclip with the instance name 'scorefield' exists in the "gameOver" frame, yet for some reason, I just get a "Cannot access a property or method of a null object reference." This code is all within a function. By the time the reference to scoreField is executed, the timeline is at the right frame.
I have strange problem. I remove sprite object from container and its not visible anymore but still behaves like its existing. here is how i add object to container:
[Code]...
I think that all listeners and vars has been removed from the object but probably not because GC does not remove the object comepletly. Why object is still at its place ? Is there easy way to check what has to be removed from object so GC can collect it?
I have a name for the object, but it doesn't seem to work.Anyone know why this doesn't work?
Code:
if (sprite) {
removeChild(sprite);
[code]......
I have a Movie Clip and Im trying to do a hit test on it but i want it to test when the second object touches th eactualy object in the movie clip, not just enters inside of the blue outline.
View 3 RepliesIs there a way to check if a derrived class contains a function. If so, call it otherwise keep going.
"myClass.as"
Code:
package{
public class myClass extends mySuperClass{
public function myClass(){
[code]....
When Flash checks a function that does not exists, its throws the error "ReferenceError: Error #1069" (5th line of myClass.as in the exemple).
check to see if a node exists in an XMLList object. I have a list of objects to convert to XML, but if an xml entry already exists, then the following objects with the same name get added as children.
View 2 RepliesI'm trying to check to see if an object exists by using a simple if statement.
if (object.name) {
//Do this
}
However, if the object doesn't exist, I get this error, "Error #1010: A term is undefined and has no properties" - which I understand is because the object doesn't exist. Is there a better way to check to see if an object exists?
I am developing a flash application for a website I have no direct access to. The flash application is supposed to call a javascript function on the website, defined by the website publisher. I got advised to check for the existance of the javascript object before calling its' function from actionscript:
var ok:Boolean = ExternalInterface.call(function() {
return typeof customObject !== 'undefined'
}
[code]....
I'm attempting to make a platform game. Each level is contained within it's own MovieClip, which has it's own class. Each of these classes extend the Level class, which provides basic functionality for all levels.
Each individual level has a numPlatforms variable which stores the number of platforms in that particular level. I currently have a for loop that runs from 1-numPlatforms and sets the level area (the image, more or less) the platform contains:
[Code]....
Is there any way to check if a variable exists within a MoveClip? I've trying comparing it to null and also to undefined, but neither works.
1- Variable Scope : Accessibility and existence are used almost interchangeably in various documents I've read. I'd like to know if a local variable physically exists (in memory) outside of the function it was declared in, and is not accessible from other methods, or if its existence ceases outside the function.
2- Classes : When do you create an instance of a class versus importing it only, specifically in the case of classes used only as say, calculators ?
I am trying to avoid this error:TypeError: Error #1010: A term is undefined and has no properties.It is being caused when I reference an object that does not exist. My code automically goes through an array of objects and will sometimes try to reference a location that does not exist (like [-1][6] for example).I am trying to set a variable based on another variable from an object in that array like so:ob.upleft = Map.baseTileArr[ob.upY][ob.leftX].walkable;If it does not exist, my program stops and I am thrown that error. My question is, how can I check to see if that object's variable in the array even exists before assigning the variable?
I've tried this, but it did not work:
if(Map.baseTileArr[ob.upY][ob.leftX]){
ob.upleft = Map.baseTileArr[ob.upY][ob.leftX].walkable;
[code].....
I have a weird problem. An Object is being passed to my function, and some parameters are optional, so naturally I would check to see if they are there, and if not, do nothing.However, I'm getting a null reference error (#1009) when I'm just checking it. Here's the sample:
public function parseObject(params:Object) {
if (params.optionalParam)
trace("Got Optional Parameter!");
[code]......
trace(car_mc.hitTestObject(car1_mc));
if(car_mc.hitTestObject(car1_mc))
{
road_mc.stop();
car_mc.y +=20;
}
In that trace statement also it is giving false in the output window.. how to make it work??
I am currently making a game. The user drags back the fish and then lets go when it gets to the desired force and angle. If it hits the penguin it disappears however i want it to rebound off the iceberg so it can bounce off and hit the penguin. However it just disappears i've tried everything and i cant work it out.
package {
import flash.display.Sprite;
import flash.net.SharedObject;
import flash.events.Event;[code]....
I want to test if an object is a vector, any vector, not only a vector of a single type.I ran a test:
var v:Vector.<int> = new Vector.<int>();
v.push(3);
v.push(1);
[code].....
When a movie clip is removed from the stage it's properties are still accessible including visible == true. How do I test to see if it is off the time line?
View 9 RepliesIs there a test to see if an Object is an associative array?
View 2 RepliesIs it possible to test if some object was added to the stage?
addChild("something") - if it was addded then......
Is there a way to test collision with a child of an object?eg.
ActionScript Code:
obj1.hitTestObject(obj2.childObj1)
obj1 and obj2 are on the same level of hierarchy.
I am trying to test when an object collides with a particular location of another object so i made a 1x1 movieclip (childObj1) and placed it inside obj2 at that particular position.
Is there a way to test a string, such as the one below to see if it's an actual number value? var theStr:String = '05'; I want to differentiate between the string value above and one such as this: var theStr2:String = 'asdfl';
View 3 Replies