when using nested functions in my code. It's very easy to want to do something like this:
ActionScript Code:
private function someFunction():void
{[codee].....
Will I take a big hit in performance using nested ViewStacks? Should I strive to handle all navigation in one ViewStack and push children manually or will the affected performance be negligible?
eg.
<viewstack>
<tabnavigator />
<tabnavigator />
<tabnavigator />
</viewstack>
I'm creating a simple scratch game (6 cards). It doesn't even have to contain difficult logic. You eventually win all the time ;)The code i wrote works pretty well, but i keep thinking it could be better. I'm not too familiar with coding, but i'm learning step by step. Do you have ideas to write this down in a cleaner and more sophisticated way?.g. I tried to separate the IF statement that returns in every function, so i would only have to write it down once, but i didn't succeed
//set card variables to 0 and when they're scratched, they're changed to 1
var checkCard1:int = 0, checkCard2:int = 0, checkCard3:int = 0, checkCard4:int = 0, checkCard5:int = 0, checkCard6:int = 0;
[code].....
So, performance wise, is it necessary to null references to classes, etc inside a function? Something like:
Code:
function myFunction():void{
var myVar:myClass = new myClass();
//do stuff with myVar...
//don't need myVar anymore
myVar = null; //is this necessary?
}
i am pretty familiar with tweaking as1/as2 performancehowever in as3 i am still a noob concerning optimization.i tend to have a class utils in my projects in which i carry a lot of static vars and functions.[code]
View 3 RepliesI initially posted this in the AS3 NEWBY forum but I think it probably belongs here. On stage I have 5 boxes, the letter A and two buttons labelled button1 and button2. The letter A is also defined as a button labelled AA_btn. When I click on button1 I want a condition to be set so that if the letter A is clicked, boxes 2 and 4 will disappear. Conversly if I click on button2 I want boxes 1, 3 and 5 to disappear. To do this I have nested the letter A and B functions under the button1 and button2 functions.
I also have a reset button which resets the display of all five boxes back to their original display.Everything works fine when I press Button1 to set the first scenario. When I then click on the letter A boxes 2 and 4 disappear. (perfect). Everything also seems to work when I press the reset button, ie: all five boxes reappear.
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I've got a few MouseEvent listeners outside of a function that contains nested functions that need to use the functions attached to the listeners.
button1.addEventListener(MouseEvent.ROLL_OVER, buttonOver);
function navigation (): void {
if statements;
[code]....
I keep getting an "1120:Access of undefined property buttonOver" error. I know it's because the EventListener is outside of the function "navigation" but I need it to be accessed by other functions later.
I have a few rows of movie clips making a menu. Because I will be adding to the number of MC's I use a variable called "menuitems" and run a FOR loops to assign all of these MC's onrollOver, onrollOut and onRelease functions. I'm doing this to save having to assign these functions to them individualy (as they are the same functions). Its works fine, but when the MC is released it is told to jump to frame 2, where there will be nested mc's that need to be able to clicked and rolled over. Because the parent movie has event functions assigned to it they seem to overide them. Is there a way around this? I tried placing a transparent MC on the 1st frame of the movie and trying to assign the onRelease function to the "hotspot" but it doesnt work. Here is my code:
Code:
function buildthumbs () {
for (i=1; i<= menuitems; i++) {[code]...........
I have this menu_mc appearing on stage on RollOver.Inside this menu_mc are 5 other mcs that are also supposed to react on rollOver.But : the rollOver works only on the menu_mc, the rollOver on the nested mcs no. I put all the script on the main stage, accessing my nested mcs with the "insert target path".I tried also to put the script of the nested mcs inside the menu_mc movie clip, but it does not respond.What do I do wrong ?
import mx.transitions.Tween;
import mx.transitions.easing.*;
orig = Menu_mc._x;[code].....
I'm starting to get a handle on some AS3 basics in terms of building nested classes or packages or whatever the proper syntax terminology is.
Now I have two instance functions:
1 - parseXML
2 - loadImage
I have these 2 functions working together using an eventHandler. Once the XML is parsed the aim is to load an image. Sounds pretty common right?
When the image loading commands are in the parseXML function they work fine. But then when I put the image loading commands in separate function titled loadImage and trigger it using an eventHandler onComplete, it loses my variable and instance definitions.
i have a nested swf that functions just fine.i have a parent swf (that holds the nested swf) that has a button (not related to functions of nested swf) that no longer works when combined.the button is simply a link button to a url... is there a very simple solution to this?
View 2 RepliesHow can one class access a nested function in another class.Examplish.
Code:
main class{
public function main(){
[code].....
I have run into this problem twice now, for two different reasons. Technically the more recent time it isn't a roadblock, but rather I just want to avoid memory waste by not using nested functions for my event handlers.[URL]
The reason I've come to this forum is that I always went on my merry way, defining event handler functions on movieclips within functions, until today, I read "I really didn't like the idea of defining an event handling function within a method of a class. I don't think nested functions are a really good practice." in the archives of the BIT-101 blog. So I decided to try to extract these and assign only a reference to each movieclip that needs the function. The problem is, it's in a class - and I need access to the properties of the movieclip from within the function. I figured I might be able to extend MovieClip, but I don't want anything in the library, so I run into the problem of how I would use my new movieclip-extending class - I read something about using the Linkage name of "__Packages."+[classname] - is that really proper? Either way, my final question is - if it's not good practice to use nested functions within the class, where do I create my event handler functions?
[code]...
And I have a mc on the stage that have a code inside to attach a scroll from the library. This scroll load a mc called "Rotuladores1", and inside this mc I have my button "r1".[code]...
For some reason I can't get this nested set of functions to work, it executes the first tween and the tween invoked after motion of the first is finished but it doesn't ever get to the third!
ActionScript Code:
var t1:Tween=new Tween(p1,"rotationY",Strong.easeOut,90,0,50,false);
var t1x:Tween=new Tween(p1,"x",Strong.easeOut,-900,0,50,false);
t1.addEventListener(TweenEvent.MOTION_FINISH,onMotionFinished);
[Code].....
I have my function on frame 1
Code:
function backhome(event:MouseEvent):void
{
this.gotoAndPlay("mapbegin");
}
At frame 10, I have a movie clip that animates and stops. Inside of that movie clip is a button that I want to go back to frame 2 when someone clicks on it. I want to be able to click on that button and call the function above.
panamacitybeach.returntomap1.addEventListener(Mous eEvent.CLICK, backhome);
When I put that code on the movie clip keyframe on the root timeline, I get this error.
TypeError: Error #1009: Cannot access a property or method of a null object reference. at intmap_fla::MainTimeline/frame1()
The addEventListener is laying on the keyframe in which the movie clip is. Why can't I call that function later on where the movie clip shows up?
I'm having problems with the scope of nested functions. I have a movie clip: "MC_clip" inside that movie clip there is a button: "inside_button". when users press "inside_button", I want the movie will jump to play frame 5 (main time line). how do i refer the stage from inside a movie clip?? another question is about the other way: how can I call to a function that is declared inside a movie clip?? is that movie clip have to be an instance on the stage??
View 8 RepliesI have my function on frame 1
[Code]....
At frame 10, I have a movie clip that animates and stops. Inside of that movie clip is a button that I want to go back to frame 2 when someone clicks on it. I want to be able to click on that button and call the function above.
[Code]....
I'm wondering if anyone has experience with if there is a big difference in performance in ActionScript 3 between keeping a class with only public static functions, and utilizing those functions often (as in a frame event at 30fps), and in turning the class into a "normal" class of which I instead make an instance and call the functions via the instance instead.
View 1 RepliesHow would you go about accessing a function or variable from a parent clip if the clip accessing has been loaded using the Loader() constructor in AS3?
View 1 Repliesthis is what i'm trying to accomplish; With a click on a movieclip (cannon_mc)a shot is being fired (ball_mc)
The longer mouse is down, the speed of wich the ball is fired with should increase.My question to you is;
What is the most efficient way to accomplish this? With a timer or something like this;
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I'm devloping some library classes for flocking/steering behaviours on large numbers of objects (2000+). I'm finding that at < 500 instances, performance is reasonable. As the numbers increase, framerate bogs down.
I've seen remarkable performance with libraries such as Flint or Box2D with ridiculous #'s of particles / objects, so it should be possible to optimize / refactor my code to be a bit better.
I'm aware of the basic optimizations, such as bitwise operations and optimized for loops. Are there any more fundamental approaches I should be considering? For example, currently each instance is a vector-based MovieClip. Would working with BitmapData be more efficient?
We have a medium size Flex 3.6 application that contains around 20 different page views (managed via a single lazy ViewStack) each having multiple components. Most use custom renderers.All model data is loaded at startup and changes to model instances are communicated via binding and/or collection change events.Once the user has viewed each page at least once, all page views are instantiated and happily listen to update events.Which in effect means that each time a model instance changes, all interested views receive that event and compute derived data or trigger item-renderers.I have tested and confirmed this behaviour in a proof-of-concept application. Even when setting a list to being invisible, it still listens to collection change events and invalidates any renderer affected.What would you do?
View 1 RepliesI have a series of calculations i'm doing over a bunch of objects stored in a array. Each function is pretty CPU demanding but if you only run one function, it just works fine.
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I've got a project thats getting a bit big, so Im taking the actionscript out into separate as files. I want all the basic functions to be in BasicFunctions.as and the make a library for more specific functions. I find that a lot of people use the import statement but I cant get that to work with a simple Hello World trace, yet the include statement works fine (see attached). I understand that import/include work differently, but which is the better method? If import, then is that heavier to work with. Any rate, what's the best way to organise code when it gets to the 1000+ lines?
[Code]....
I'm trying to find a way to have global functions in my as project, similar to how flash does with stuff like the util functions (describeType()...), where you can just call the function wherever you need it. For example:
[Code]...
So when I call Test(), it prints out "hello world" fine. My problem comes in that I can't change the name of the Test function, and I can't add any other functions without compiler errors. Is it possible to have a load of global functions in one file, or do I have to split them up into separate files like in the example? Also, I know that I can make a Global class and call static functions like Code: Global.doSomething() but I'd like to know if there's a way to do it as flash does it (describeType(), getDefinitionByName(), etc), or rather, how does flash do it?
Is it not possible to call other functions from generic mouse event functions?
Code:
_root.myButton.onPress = function(){
hide();
[code]......
I have one function that puts text in a text field and makes a button goto a url onRelease.The code is like this:
Code:
item.onRelease = function() {
myButton.onRelease = function() {
getURL("http://google.com", "_blank");
}
talk = this.txt;
}
the only problem is that the button doesn't work onRelease. i think that it is because there are too many functions there, but at the same time,
in this example why the values of (12) and (21,39) are lost at the geo and geo1 functions
[code]...
Im adding lot of simple functions to prototypes of top level objects ( Object , Array , String ...) and have 2 questions :
Is possible to add functions to top level's classes in compile-time ?
If not , is there a way to allow this functions to compile ? I dont like to turn off strict mode
ex:
string.removeWhiteSpace();
string.sliceStr("." , "end");
textField.scrollBottom();
this return compile-time error , cause there is no such function , i have to write it in braces :
string["removeWhiteSpace"]();
string["sliceStr"]("." , "end");
textField["scrollBottom"]();
and i like to aviod it )
