I am new to AS3, I need to know how to load a xml file from Local server.
Lee Brimelow has a good tutorial on loading XML. You should just be able to pass your XML's full path to the URLRequest object. But make sure the external server has a cross domain file setup, or you won't be able to access it.
A good starting point for this kind of question could be the AS3 docs. As you progress with AS3, the docs will become an essential tool.
In this specific case you would want to look at the URLLoader Class
and probably have a look at the XML Class.
You should find typical use examples such as this one which loads a simple text file, although the general implementation will be very similar for an XML file.
Since you're a beginner, you would probaly like to check the video tutorials on Adobe TV as well as Lee Brimelow's website gotoandlearn.com (as referred to by Adam ) which is filled with excellent resources.
Related
Im currently developing an swf 3D Player for the web with Flex SDK. My goal is to create an air application that lets the user load models and export them to .swf 3D player to make those 3d models viewable over the web. Im using FlashDevelop.
My original goal was to include the mxmlc compiler and the whole flex sdk inside my air apps bin directory and run those with airs native extensions with arguments(command line). The problem is that flex sdk is about 800Mb size and again required JRE to run mxmlc.
Is there a way to include a minimalistic compiler inside my air application which doesn't require 800mb+ ? I know I just could output a general swf that first loads a config file with paths to the model and textures and then loads those, but I want the models and textures to be included inside the swf to make those safe from being easily downloaded. Any suggestions?
This doesn't answer the specific question asked, but it's too long for a comment.
Your problem is not how to include the flex compiler with AIR, it's how to stop the models and textures in the SWF from being downloaded easily.
First of all, there's no 100% secure answer; the SWF format is easily decompiled (so embedding 1 file per SWF is out), and if determined enough, someone can look at the memory of your application to find what they need; this is all about stopping the easy copy.
Off the top of my head, these are some of the ways you can do it, assuming that your end goal is an online 3D model viewer:
1) Have your own format
While technically not impossible, it is pretty awkward; basically you write your own format for storing and displaying models (essentially what most 3D modelling software does). This means that if someone gets hold of a model file, it's useless to them unless they write a parser (naturally, you'll need to protect your display SWF). If the purpose of your viewer is for other users to buy the model, then they'll need it in a format that they can use, so your workflow goes something like this:
Create model in common format -> convert to custom format for display in your player -> user browses and hits "buy" -> they download the common format file
2) Load the 3D model from your site
The simplest option; just load the model directly from your server, similar to how you'd load an image. To stop people from downloading the file directly, store them above the htdocs folder, and access them through a local URI in flash. So your server file system looks something like this:
models
Model1
Model2
...
htdocs
index.html
3DPlayer.swf // loads models using a "../models/Model1" path
Thus only your SWF can access the models (though technically, as it's a file download, it might be in the browser cache - you should test it). To actually put the models into the models directory, you'll either need FTP access to the server, or need to create a simple script (using PHP or the like) to upload them.
3) Stream the assets to your SWF
As already mentioned, you can use something like ColdFusion to stream the assets directly to your SWF on demand. I've no experience in ColdFusion though, so I can't really say how this would work, but it shouldn't be too hard
4) DB connection
Assuming your models are stored as text blobs in a DB (e.g. MySQL or MongoDB), you can either connect directly with the SWF or use PHP and AMFPHP to connect to the db and stream the model that way.
You'll need to implement some security to make sure that people can't spoof your server calls, but the actual code to connect and return the value isn't too hard. As an added bonus, you're not tied to the SWF format, and can implement JS displayers etc if needed.
Forgive me if this is not the correct place to ask such a question.
Basically, I am looking for a way to allow someone to easily (at least, easier then diving into Flash) create a basic Flash animation (movieclip) with some placed image assets and text, all via a web interface.
I was thinking along the lines of using jQuery to allow drag and drop assets, of which you'd "record" the co-ordinates and relay that to Flash somehow to create the SWF file.
Or would it be better to create a tool in Flash (surely making operations easier) and then have some kind of "save" button to render out the SWF?
I'm totally open to suggestions.
Thank you
If you really need to produce a stand-alone SWF file (and not just a config file for you own "player"), I would probably do it like this;
1) Create your editor in whatever system you feel like (flash, jquery etc).
2) Build a config file in the client. This is used, together with all the resources the user added, to play back the animation.
3) Upload said assets and config file to your web server.
4) Use the flex compiler (on the server) to produce the resulting SWF, combining your player with generated AS3 which embeds the uploaded resources as needed, to make it available to the player.
5) Give the user a download link for the newly generated SWF file.
I don't think there is any swf compiler available for Flash (actionescript). You may create a swf that allows users to create an animation, save it as a home-made vector format, and then replay it. But I don't believe you can create and independant swf file with only the created animation in it.
Just think about a player in Flash, and a format that the player will read (xml, json, name it...). You can either generate the input with jQuery or Flash, and then feed it into your player to display it. You will eventually need two files.
Apparently this library allows you to compile SWFs at runtime. I haven't used it myself (yet) and don't know how stable or flexible it is, but it appears to be what you're looking for. I'd recommend giving it a spin and seeing if it's sufficient.
I'm not exactly sure how it saves the file, so you might run into security problems since it's a web application. Hopefully it should be OK though.
I have one swf file, it is JW Player plugin. It have one actionscript file in which is whole plugin code, and rest of files are jwplayer api files. So i need to open that file (where whole plugin code is) and edit few lines. But there is a problem, because when i try to decompile file with sothink swf decompiler (and few others) - to convert it to .FLA, decompiles simply crashes. It is because of some file from jwplayer api library. So, next thing i tried is to edit via HEX (because there is not much to be edited), but i couldn't find what i needed. So what i need is - is there any way or not? If yes, which program can be used for this?
I've had to do something similar in the past. In my scenario, the client had the SWF but no FLA. I needed to change a hardcoded url and sothink wasn't decompiling but I could view the AS in the sothink previewer. Luckily for me the flash wasn't very complex so I was able to copy the AS and graphics out and start a new project. I would imagine that JW Player is much more complex so this may not be an option for you, but thought I'd mention it anyway.
Depending on your needs, you may be able to get what you want by using the plugin API to extend the functionality or maybe even by customizing a skin.
I am writing a game in ActionScript3 using Flixel as a base. I have been unable to find a good method for saving and loading files from the player's local hard drive. I know Flixel has a way to save game data to...I think...cookies that the player doesn't really have access to, and I want to avoid this.
I first learned programming in Java, and one thing I've seen a lot of is scanning (Scanner) and printing (PrintWriter) lines of strings to/from text files. Something like this for AS3 would be my ideal, but if there are other methods I'm open.
Does AS3 have anything in its basic library that can do this task well? Are there libraries I can download and include that do this well/better?
If your game is going to run on a webpage your options are limited. Due to security concerns Flash is limited to reading and writing files specifically selected by the user.
Should you be using Air to make a standalone game, you will have regular access to the filesystem and can write files much like with Java.
If not, you will be pretty much stuck with Flash cookie equivalent, SharedObject.
I'm currently developing a project manager in AS3 and I want to save them into files. I found this tutorial (http://www.purplesquirrels.com.au/?p=1297) to create and read my own file types, but its using AIR.
I want to put some instances inside it too, because I need to know how the objects are positioning in my Main MovieClip.
Is it possible to do in AS3/Flash CS5?
Thanks!
EDIT: I found XML type. Can I write instances into XML files?
Yes this is possible. The shared object provided by flash allows you to store data on the user's pc. Have a look at this: http://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/flash/net/SharedObject.html