AS3 problem with unrealScript

[lightoy]

function USCallAS()
{
    local array<ASValue> args;
    args.Length = 2;

    args[0].Type=AS_String;
    args[0].s="Hello,AS3";
    args[1].Type=AS_Number;
    args[1].n=2012;

    Invoke("MyASFunction",Args);
}

The code above works fine with actionScript 2.
But no matter I use Invoke or packing unrealscript functions, It does not work with AS3.

[Meardon]

It's seems right... I think the problem is actionscript side. Can you show the MyASFunction definition ?

[cheesewhisk]

Try

Invoke("MyASFunction",Args,2);

[Meardon]

Use args.Add(2); instead args.Length = 2;

[lightoy]

A compilation error has occurred. "Error, call to 'Invoke':Function only takes 2 parameter(s)"

Try

Invoke("MyASFunction",Args,2);

[lightoy]

My actionscript is

import flash.external.ExternalInterface;
import scaleform.gfx.*;

scaleform.gfx.Extensions.enabled=true;

//event
myBtn.addEventListener(MouseEvent.CLICK,onBtnClicked);

function onBtnClicked(e:MouseEvent){
	ExternalInterface.call("USCallAS");
}

//be called
function MyASFunction($params1:String,$params2:Number){
	myTestText.text=$params1+$params2;
}

[Meardon]

Why do you use $ ? It's not a php code. Try :

function MyASFunction(params1:String,params2:Number){
	myTestText.text=params1+params2;
}

[Matt Doyle]

Confirmed working in Feb 2012 UDK - UnrealScript for use with AS3:

local array<ASValue> args;
local ASValue asval;

asval.Type = AS_String;
asval.s = "Matthew";
args[0] = asval;

asval.Type = AS_Number;
asval.n = 38;
args[1] = asval;

GetVariableObject("root").Invoke("MyTestFunction", args);

AS3:

function MyTestFunction(MyString:String, MyNumber:Number):void
{
    //Do Something...
}

HOWEVER, the preferred, more efficient method of doing this from UnrealScript would be:

CallASFunction("Matthew", 38);

function CallASFunction(string MyString, int MyNumber)
{
    ActionScriptVoid("MyTestFunction");
}

This method uses less memory, and can pass GFxObjects, while Invoke cannot.

[lightoy]

Really helps, TKS.

[mikepurvis]

Thanks for posting this Matthew.

Where is this code put in UnrealScript? For instance if I want to call this on a GfxMovie I have reference to in a SequenceAction can I use it there?

[donggas90]

Good Tip!

Some questions, Is ActionScriptVoid() cast parameters automatically?

function CallASFunction(string MyString, int MyNumber)
{
    ActionScriptVoid("MyTestFunction");
}

function MyTestFunction(MyString:String, MyNumber:Number):void
{
    //Do Something...
}

example, from Unreal string MyString to AS string MyString.

[Matt Doyle]

This link will explain it to you:

http://udn.epicgames.com/Three/Scale...0_UnrealScript

[cheesewhisk]

Is ActionScriptVoid native to scaleform 4.x or is this just the UDK implementation?

[Matt Doyle]

ActionScriptVoid is a UDK Scaleform integration specific function.

[cheesewhisk]

Hmm, that's pretty nice.

Two quick things, how does unrealscript know which movie it's calling 'ActionScriptVoid' on? And how do I get a return value?