I am trying to create a kind of simple game where you move a player around and dodge some enemies. I was wondering if it was possible to add code onto a object in as3.
I want to be able to put code onto an object and not on the main timeline, so when it is on the stage, it will carry out the codes.
Sorry if this is confusing, I don't know how to explain it.
Each MovieClip object has its own timeline. Create a layer for code in your object's timeline and add actionscript in the usual way to it -- using the Actionscript panel.
You can start with a simple 'trace' statement to see that it works.
Please do not put code on the timeline.
Read a tutorial about Object-Oriented Programming in AS3. Learn about Document Classes and how to attach a class to a library object.
Here's a link to one of the first tutorials that popped up when I googled "Flash oop tutorial": http://code.tutsplus.com/tutorials/as3-101-oop-introduction-basix--active-5789
Related
I'm looking for a list of flash.include.whatever.whatever for as3.
If no one knows a list then can someone tell me the flash.include to use for drawing rectangle with the startFill and endFill things? Thanks for any help.
I didn't find anything on either of these googling, and the place I got the code for drawing a rectangle of course didn't have the flash.includes included in the example code... is their a reason so many people do that? Any way I can get around it?
Do you mean you want a list of the packages and classes that come with AS3? That is typically called the documentation and can be found here:
Adobe ActionScript® 3 API Reference
For drawing a Rectangle, you can start at flash.display.Shape. It has a graphics object with the methods .beginFill() and .endFill().
you can using a Graphics.
The Graphics class contains a set of methods that you can use to
create a vector shape. Display objects that support drawing include
Sprite and Shape objects. Each of these classes includes a graphics
property that is a Graphics object. The following are among those
helper functions provided for ease of use: drawRect(),
drawRoundRect(), drawCircle(), and drawEllipse(). You cannot create a
Graphics object directly from ActionScript code. If you call new
Graphics(), an exception is thrown.
The Graphics class is final; it cannot be subclassed.
here is a sample
import flash.display.*;
this.graphics.beginFill(0xff0000);
this.graphics.drawRect(0,0,100,100);
here is a Adobe Tutorial
AS3 all display class list here
You do not necessarily need to default AS3 include. fine compile. But include only the code you can see the hint. perhaps, CS4 after that if you use a specific class will automatically include. or ctrl+space is autocompletion.
As follows by default when you install the flash is because of the SWC path.
As per I know, there is not such a thing like Flash.include. May be you're trying to ask something else or may be i am still unknown about this feature.
If you found any positive thing about this, please let me know, i want to know that new thing.
I need to create a single SWF with no external files, so I'm trying to add an internal preloader to my Flash project which has [embed] assets. I know [embed] causes problems with preloaders because it puts the assets on frame 1. I have tried the solutions recommended in these posts, where you set the document class to your preloader class:
Preloader for SWF with embed bytearray
How to create Preloader in AS3
I can get it to work, but ONLY if I comment out any lines of code that involve the stage, otherwise I get an "Error #1009: Cannot access a property or method of a null object reference." Those lines are essential though, so does anyone know how to fix those errors with the stage?
You haven't posted your code or your fla, so all I can do is share what works for me.
First, I wouldn't use Embed. Instead, use a swc. I have found that Embed can be unreliable as far as actually getting the entire asset in there (at least when publishing with Flash Builder + Flash Pro, which is my workflow).
Once you have your assets in a swc, try the following steps:
Set your export frame to Frame 10 (or any frame other than 1--I like frame 10 because then you can read the label that says "Preloader")
Put your actual content on frame 11. You can structure this a lot of ways. Since I program to Interfaces, I give whatever is on frame 11 an instance name and then use a setter to determine that my "first thing" has been placed on stage. I can get away with this because my main Document Class just knows the definition of the Interface, not the full implementation of the Class, so the Class does not need to load for the main Document Class to work. You probably aren't truly using the timeline and probably didn't program to interfaces, so you'll probably just set the base class of the symbol that's on frame 11 to the main logic of whatever you're trying to do.
Put your preloader graphics in Frame 1. I'm not sure why your stage references are so important. I, personally, don't use any logic in the preloader. Instead, I use a spinner that spans frames 1-10 (plus the word "Loading...". The spinner just spins while the classes load. The embed frame acts as a temporary "stop" that just holds the timeline back until those classes have been loaded. Once the classes have been loaded, the timeline will act like you called play() on it. So it really can be that simple. If you need it to be more complicated, give one of your preloader graphics an instance name and set up a getter/setter pair for it, then use the setter to trigger your logic that accesses the stage. You are pretty much guaranteed to have a valid stage at that point.
Word of warning: if you did make use of the timelime, you will get strange results if you try to jump to a frame that isn't loaded yet, so make sure to check to see if a given frame is loaded if it's near the end of your main timeline and your main timeline is heavy with assets before calling goToAndPlay() or goToAndStop().
Some references that might help you further:
Preloaders vs as 3 (I'd recommend you read the entire series this is part of. This is an amazing series I wish I'd found 3 years ago)
Solving the Frame 2 Problem Presentation and code
Combining the Timeline with OOP The example code for that is here (long story)
I'm currently working on an Adobe AIR project to pump out my level editor but I'm running into an issue. I basically need to implement an interactive movie editor. My question is how would you recommend I get the timeline editing started? Functionality wise it needs to be able to set tween key frames for position, scale, and alpha. Any ideas?
I've also been trying to look into pulling tween data from a swf. I'm not entirely sure how applicable this would be.
I'm not sure what you mean by movie editor - movie as in a sequence of images(bitmaps) or movie as in flash MovieClip ?
If it's the later, you could use a tweening engine like TweenLite to do the hard lifting and then it's up to you how you organize the scrollable GUI for the timeline (plenty of examples out there, starting with Flash/After Effectts/Blender/etc.) Feedback from your designer/animator is crucial I presume.
Pulling data from Flash could also be possible. If you'd like to parse the swf you can try Claus Wahlers' awesome as3swf library. Be sure to check some of his posts:
SWF Timeline Reconstruction with as3swf
Flash IDE Inspired Flex 4 Timeline Component
Another option would be to use jsfl (JavaScript scripting in the Flash IDE) and parse the tweens your designer/animator creates. It should be a matter of parsing a XML for the tween(be it old/classic or new/motion). If you go the JSFL route, you might also find the xJSFL project useful.
Also, for inspiration on game/animation tools check out Spriter
I'm busy developing my first application using the AS3.0 language.
I built the full application in Flash Professional, it worked, but it lacked performance.
Now, I'm rebuilding it in Flash builder, so it's more optimised, and it's running great.
Although I've hit a snag.
In Flash Pro, it was very easy for me to add movieclips to the stage, with code nested inside them, so when I added the object, all the code worked like a charm.
In Flash Builder, I have NO clue on how to achieve the same effect... I'm so close to being finished but have no idea how to achieve this.
I've tried making external classes, but with no programming background, it's very hard to find a solution when I don't know where to begin...
SO in short:
HOw to you add objects to your stage using pure AS3 code,
I need to add a graphic object to my stage
And add simple mouse interactivity to it.
Any responses, links, chuckles at me, would be greatly appreciated
Shane
The following code would add a movieclip to the stage, with a line drawn from 0,0 to 100,100 . Provided you are writing this code in the Main class.
var mc:MovieClip = new MovieClip();
addChild(mc) ;
mc.moveTo(0,0)
mc.lineTo(100,100) ;
I'm using the Flex 3 SDK and the free FlashDevelop IDE.
As I don't have FlexBuilder or Flash CS4 Professional I cannot make MovieClips graphically.
So instead I want to create a simple MovieClip using code or MXML. For example, lets say I want to create a MovieClip with 3 frames, and load a bitmap into each frame to create a simple animation.
Is this possible? I've had a good google around and the only examples I can find are of loading existing MovieClips and adding them to a stage.
You can create a movieclip with this simple code:
var mc:MovieClip = new MovieClip();
stage.addChild(mc);
That is of cause just and empty movieclip, you can draw on it with graphics property (see here).
As far as I know there is no way to create frame with actionscript. Though there might be some undocumented methods. There are some functions that do not appear in the documentation (like the addFrameScript method).
I would say the best way (if you absolutly can not use the Flash CS4), would be to have a series of Loader objects, and the hide and show them on every in sequence.
Just put them in an array and listen for the enterFrame event.
You can load in the bitmaps in the Loader objects.
If you use the links and checkout the examples in the documentation, I think you should be able to figure it out.
As far as I've seen, there is no easy way to create a MovieClip in Flex which behaves in a way one might see as comparable to Flash's implementation MovieClip. But I don't think you really want a MovieClip to begin with. Flex does not really play well with non-flex objects. Yes, it is possible to add something to a UIComponent, but you are much better off working withing the Flex framework than doing workarounds.
I would use the mx:Image tag to load your images. It is generally the cleanest way to load an image into Flex. It will let you embed the object into the SWF at compile time, which means that you will not have to point to an outside file. I will caution about having too many embedded graphics -- that will kill your download time and possibly your performance.
If you are only interested in having an animation move or re-size, then I would use the Move and Resize objects which are native Flex Tweens.
Your best option might be to extend the UIComponent class, add a MovieClip as a child-component, and apply the settings from MXML via proxy. e.g.,
public function set movieFrames(value:Array):void {
for each(var b:Bitmap in value) {
//add bitmap to _movieclip object.
}
}
You want a Sprite not a MovieClip. And use time instead of frames. There's a Timer class and a getTimer() function. Use them.
create a class that extends/implements Sprite.
Add a Loader class.
Google it exactly how it's done. (flashtuts.com or sth like that).