Forums → Programming Forum → Two Unknown AS2 Errors

hmm...i just googled it, and look what I found

http://www.actionscript.org/forums/showthread.php3?t=86896

Without more of your code, I cannot help further

I found that exact forum post as well, but I do not understand how the problem was finally solved.

This is the entire code:

class Background extends MovieClip
{

//IqAndreas: Limit the speed the background is allowed to scroll (otherwise it might be rediculous)
public const MAXSCROLLSPEED:int = 50;
public const MINSCROLLSPEED:int = -50; //IqAndreas: Allow the background to scroll backwards as if the ship is traveling backwards

//IqAndreas: Added a new property that allows the player to change the speed the background scrolls at.
private var _scrollSpeed:int = 1
public property get scrollSpeed():int
{
if ((newSpeed <= MAXSCROLLSPEED) && (newSpeed >= MINSCROLLSPEED)
{return _scrollSpeed;}
else //Include this just in case newSpeed is not a valid number such as null
{throw new Error("_scrollSpeed is not a valid value. Value must be between " & MINSCROLLSPEED & " and " & MAXSCROLLSPEED & ".&quot}
{
public property set scrollSpeed(newSpeed:int = 1):void
{
if (newSpeed > MAXSCROLLSPEED)
{throw new RangeError("The background speed must be less than " & MAXSCROLLSPEED & ".&quot}
else if (newSpeed < MINSCROLLSPEED)
{throw new RangeError("The background speed must be more than " & MINSCROLLSPEED & ".&quot}
else if ((newSpeed <= MAXSCROLLSPEED) && (newSpeed >= MINSCROLLSPEED)
{_scrollSpeed = newSpeed;}
else //Include this just in case newSpeed is not a valid number such as null
{throw new Error("The background speed must be between " & MINSCROLLSPEED & " and " & MAXSCROLLSPEED & ".&quot}
trace("_scrollSpeed set to",_scrollSpeed)
{
//this onEnterFrame function is a built-in function of every movie clip. It will execute all code inside it at frame rate (30 times a second)
function onEnterFrame()
{
//move the background the amount of pixels as indicated by the speed
_x -= this.scrollSpeed();
trace("Background moved",this.scrollSpeed());
//if it has travelled its entire length (2110 pixels)
//IqAndreas: THIS CODE WAS CHANGED SO THAT IF THE BACKGROUND SIZE IS NOT 2110 PIXELS, IT STILL WILL WORK
if(_x < this.width)
{
//then snap it back to zero, it will appear to scroll seamlessly
_x = 0;
}
}
}

I found another page on google

g=PA106&lpg=PA106&dq=%22A+member+attribute+was+used+incorrectly%22&source=web&ots=f93P85s0OM&sig=n6htLbctY5q3-dUXvnYy440J7sA&hl=en&sa=X&oi=book_result&resnum=4&ct=result#PPA106,M1"> http://books.google.ca/books?id=wQlYlMuTbwYC&ampg=PA106&lpg=PA106&dq=%22A+member+attribute+was+used+incorrectly%22&source=web&ots=f93P85s0OM&sig=n6htLbctY5q3-dUXvnYy440J7sA&hl=en&sa=X&oi=book_result&resnum=4&ct=result#PPA106,M1

I don't think you can make a constant and use it for moving the bg...

So how should I change the code?

Should I replace const with var? Or what do you mean?

I tried replacing const with var and instead was met with 25 different compile errors!!

I even tried removing the public namespace, but the errors were still there.

Some of the many errors that appeared a lot were "The class or interface 'int' could not be loaded." and "A member attribute was used incorrectly."

I meant that instead of using a constant, can't you just type 50 or -50 whereever it is needed? :PD

This is AS3, not AS2. Make sure you're compiling in AS3 first.

All variables should be declared with 'var.' This is the proper naming convention:

attributes var:datatype[ = value];

Also, try Number in place of int. Int might give you a floating mantissa exception if you try to do certain things with it.

I meant that instead of using a constant, can't you just type 50 or -50 whereever it is needed?

This is AS3, not AS2. Make sure you're compiling in AS3 first.

@dank: lol...i know :P

@Iqandreas: To change it from AS3 to AS2, click on the stage and then choose Settings (beside Publish) from the property panel. And select AS2 from AS Version dropdown

Your code is a mess. I have no idea if you're trying to do it in AS2 or AS3. I would scrap it and write clearly in either AS2 or AS3.