I've Just started learning actionscript 3.0, and I got a problem.
I just want a symbol to be in the stage for many times ,not in a same time, but it brings them all in at the beginning. I just used this piece of code below:
for (i=1,i<10,i++){
stuff();
}
function stuff():void {
theSymbol.x=(Math.random()*100);
addChild("theSymbol");
}
Is there any other ways to :
Bring the symbol into the stage many times "not in a same time" ,in a while.
Call a function many times without using "for".
Thanks for any Ideas .PLZ answer soon as possible!
;)
I believe you wanna do something like:
setInterval(stuff, 1000) // call stuff() once every second.
function stuff():void {
theSymbol.x=(Math.random()*100);
addChild("theSymbol");
}
Does it helps you?
Related
In my little Flash project, I use the Enter Frame Gameloop commands, and I use hittestobject and such then put that function in to the game loop. However, When switching scenes I am bombarded with errors because the objects included in the functions are not on screen anymore. My question is how can I either take those functions out of the game loop when changing from that specific scene, or write the code so it only includes that one specific scene. Like: if current frame = 2, or something in real code form. Thankyou so much I am very appreciative for any replies.
function gameLoop(evnt:Event){
try{
//Write your all codes
}catch(err:Error){
}
}
Use try/ catch.
I don't know the way you change scenes.
Based on your description,I guess the way you change scenes is to go to different frames.Am I right?
If I am right,I think you can declare a variable to mark if you need to do the hittestobject function or other operations.
such as:
gameloop(){
if(!changing)
a.hitTestObject(b)
}
I am facing a problem, where there is a function executed the next line right after a gotoAndStop(130) action, the function depends in its work on the objects inside this frame. but the problem is that the function seems not seeing any children.. why? why? why? why?
myMc.gotoAndStop(130);
create_waypoints(par1,par2,par3);
the function creat_waypoints depends on the drawn obstacles that exists in frame 130 inside the myMc.
it seems (but I don't know for sure) by the time that creat_waypoints executes its actions, frame 130 was just entered but not yet loaded...
What can I do? Thanks in advance..
after many experiments, I have come to a working solution but it is twisted, it had to skip an entire loop of actions and I am not happy with it, but for now it is all what I have..
myMc.gotoAndStop(2);
myMc.addEventListener(Event.ENTER_FRAME,mc_ef,false,0,true);
function mc_ef(e:Event):void {
if (e.target.loaded==null) {
e.target.loaded=true;
} else {
e.target.loaded=null;
creat_waypoints(par1,par2,par3);
e.target.removeEventListener(e.type,arguments.callee);
}
}
A simpler work-around would be including the "obstacles" and their dependencies in earlier frame where the depending logic is written. They can be included as "out-of-stage" invisible members.
Hi Im relatively new to flash developing and i have a quick question about saving user input. I have a maze scene whereby the user navagates a character around until confronted with another object, when the character hits the object a new scene is opened promting the user to pick a solution to a problem. Once the user clicks the correct answer a box appears saying return to the maze, however when clicked and returned to the maze the character starts back in its original postion, where as I would like the scene to resume where it left off, ie the character is at the point where it collided with the object, the object has dissappeared and the character can resume on the same course.
Thanks for giving this a read I hope it makes sense and some one has a solution for me.
I did have some nice images to explain it better but apprently i need 10 reputation points to upload those.
EDIT: First Id like to say thanks for the rep points you bunch of stars and secondly I know using scenes in flash is seriously cr*p practice and outdated but its the way I learnt all those years ago and seen as Flash itself will be outdated soon Im not really looking to learn another approach using sprites or frames, I just kind of want a fix for this way if poss thank you for answering!
EDIT: Wanting the red rectangle to be removed from the scene once the black square collides with it. It also takes you to the next frame upon doing so. here is my code.
addEventListener(Event.ENTER_FRAME, fl_EnterFrameHandler);
function fl_EnterFrameHandler (event:Event):void
{
if (player.hitTestObject(Risk))
{
removeEventListener(Event.ENTER_FRAME, fl_EnterFrameHandler);
removeChild(Risk);
nextFrame();
}
}
I'd suggest you forget about Scenes! They are old, buggy, bring loads of issues with code and are generally a Bad Pratice!! So if you are just learning AS3, dont learn with Scenes!!
Use MovieClips or Sprites instead. And just add and remove them as you need!
EDIT:
To ur edit ;)
and seen as Flash itself will be outdated soon
thats just plain false and a widespread misinformation. It just has a new purpose like MultiPlattform Game Development. But thats a whole different discussion.
You could solve this by saving the x,y coordinates and then restoring them. But i promise you, you will run in to alot more problems/bugs as you go allong!
Like saved Points and Time. Will you triger the Questionscene again when u place the player on the object(last Position). Save the answers, and so on ...
Changing to DisplayObjects will save you time in the end. Just saying ;)
EDIT2:
your code in the comment should look like this:
function fl_EnterFrameHandler (event:Event):void
{
if (player.hitTestObject(Risk))
{
removeEventListener(Event.ENTER_FRAME, fl_EnterFrameHandler);//remove to prevent errors if it fires again and there is no Object to hitTest
removeChild(Risk);// do what needs to be done on this frame
nextFrame();// and then move to the next
}
}
And following correct convetions and make everybody's life easier reading this, it would look like this!
function fl_EnterFrameHandler (event:Event):void
{
if (player.hitTestObject(risk))
{
removeEventListener(Event.ENTER_FRAME, fl_EnterFrameHandler);//remove to prevent errors if it fires again and there is no Onject to hitTest
removeChild (risk);
nextFrame ();
}
}
i'm probaly confusing u now, just use the top one ;)
EDIT3:
Ok, i just had a butchers at it. It's all on a single Frame now. I would have prefered Classes but that'lljust confuse you.
To add new qestions you just have to dublicate the Question MovieClip in the Library and change texts, leave instance names the same tho, then the code will work as is!
DOWLOAD
It is certainly possible. You would store the characters attributes (e.g. current position) within a variable. Then on returning to your game you would use this variable to set the starting position of your character.
I agree that scenes are not the ideal route you should be taking. Possibly reading a good AS3 book would save you hours/days/weeks in the long run.
I wanted to know how i would be able to make a tween wait a few extra seconds before it is carried out? MY CODE BELOW:
btn_1.addEventListener(MouseEvent.CLICK, about_navigate);
function about_navigate(event:MouseEvent):void
{
topbarTween.yoyo();
//how to make the below tween wait 2 seconds before it is carried out
btmTween.yoyo();
}
I am new to AS3 so any help would be much appreciated!
I don't think the Native Tween class has a built in delay method (like most third party solutions do - Though someone please correct me if I'm mistaken).
What you can do is use flash.utils.setTimeout or a Timer.
function about_navigate(event:MouseEvent):void
{
topbarTween.yoyo();
setTimeout(btmTween.yoyo,2000);
}
After many years of using Flash 8, I'm moving to CS3 at work. I know I'll have to learn AS 3.0 so, does anyone have any good references or summaries of the major/most noticeable changes? Also, are there any tips/tricks for the flash environment? After spending a few minutes in CS3, I noticed that you can't directly attach actionscript to a button, which is new to me. Any other such pitfalls to watch over?
I made the total switch just about 3 months ago, here are some things that helped me ramp up rather quickly:
1) Do everything in Class files
A lot of AS3 tutorials out there deal with just code pasted on the timeline (which I can't stand because now you have to hunt for what import you need), but is fine for quick tiny stuff. In the long run it's way better work primarily in Class files. Learning how Classes work opened a huge door for me, it was the same feeling/experience I had when I first discovered Functions in AS2 :)
2) Keep graphics in library and off the workspace
Example, you have a jpg, gif, png file you just imported into your library. Made a movieClip and gave it a class name(MyButton). Now the code below will place the graphic into the workspace for you:
var myButton:MovieClip = new MyButton();
myButton.x = 6;
myButton.y = 22;
myButton.buttonMode = true;
addChild(myButton);
3) Get use to the new button code in AS3
It's something all of us new converts had to deal with painfully, but now it's a piece of cake :)
myButton.addEventListener(MouseEvent.MOUSE_UP, clickThis);
function clickThis(event:MouseEvent):void
{
navigateToURL(new URLRequest("form.html"), "_self");
//navigateToURL(request, '_self');
}
4) Make sure you remove Event Listeners after use
It took me a bit to wrap my around this one... remove em why? Oh they are still running in the background and when I listen again I'll get all kinds of mutated errors.
private function volDown(e:MouseEvent):void
{
masker.width = volControl.mouseX;
userVolume = (masker.width / 100) * 1;
volControl.addEventListener(MouseEvent.MOUSE_MOVE, volMove);
}
private function volUp(e:MouseEvent):void
{
lastVolPoint = masker.width;
setVolume(userVolume);
e.updateAfterEvent();
volControl.removeEventListener(MouseEvent.MOUSE_MOVE, volMove);
}
5) Don't forget to pass Events
I'm not a programmer by trade and this has caused so much grief, I'm glad I'm done with this birthing pain:
myButton.addEventListener(MouseEvent.MOUSE_UP, clickThis);
Since the clickThis function is launched via an Event, you have to pass: event:MouseEvent into it like so:
function clickThis(event:MouseEvent):void
Because the code below will throw the dreaded AS3 "Access of undefined property" error that new AS3 guys will always run into.
function clickThis():void
6) Read and post questions on StackOverflow... a lot!
btw I'm still a noob and originally a designer then AS2 dev, I still don't know why we put :void behind a function name.. if we have similar coding backgrounds I hope all that helps :)
I suggest you to look at the ActionScript language migration page on the Adobe devnet. It offers quite a lot articles about the key changes with ActionScript 3.
To answer your problem with the actions on a button, this no longer works (and was already with ActionScript 2 not the best way to do it). AS3 requires the code to be centralized on the timeline. So for giving a button some action, you'll need to give it an instance name and add an event listener for the CLICK event, like this:
function doSomething ( event:MouseEvent ):void
{
trace( "test" );
}
myButton.addEventListener( MouseEvent.CLICK, doSomething );
Get an Actionscript 3 IDE. Such as Flash Builder, FlashDevlop, or FDT. This will force you to learn really fast.