Coding Forum

**lajkonik86** · 10-01-2004, 12:57 PM

this is really the most strange problem i ever had.
I've created my own flash game and it creates a checksum which it send along with the score to a php script. Which creates a highscore list.
The checksum is proving to be a problem. The php script is taking the score and creating a checksum.
The flash is taking the score and creating the checksum and is then supposed to send it.
There's just one problem..

When i take a look at my flash in swishmax and use the trace function to see if the checksum is calculated correctly everything seems fine.
But when export it to a html or flashplayer the variable gets send out wrong.

Flash code:

Code:

_root.scoreprecheck = _root.score*63478256;
    _root.scorecheck = 0;
    for (c=0; c<length(_root.scoreprecheck); c++) {
        _root.scorecheck+=_root.scoreprecheck.substr(c,1)*(c+1);
        _root.scorecheck-= "1";
    }
       trace(_root.scorecheck);

With a score of 200 this would result in 170. The trace does tell me it's 170 but when i play the game in flashplayer or in the web it doens't submit 170. It submits -11.
I don't get this at all. Maybe there's a different engine running swishmax or something?
Dont know hope somebody can help me with this.. I'm getting nowere

Don't know what good it would do but this is the code i'm using to submit to the php.

Code:

scorecheck = _root.scorecheck;
    getURL("http://localhost/test.php","_blank","POST");

Need help

Greetz
Thierry

**david** · 10-01-2004, 01:59 PM

All I can think of is that maybe your numbers are getting truncated or overflowing. Check the way they are being represented (is it integer or floating point?)

**lajkonik86** · 10-02-2004, 01:57 PM

dont really understand what you are saing

**Rufo** · 10-02-2004, 09:03 PM

I'd say that the line
_root.scoreprecheck = _root.score*63478256;
is causing the checksum numbers to be too big for Flash to cope with. Try a smaller number.

I think the line
_root.scorecheck-= "1";
shouldn't have the "s, either.

Rufo.

**kisk** · 10-02-2004, 10:52 PM

not sure how flash handles type casting, but you're initially using scoreprecheck as a number

later you say "for (c=0; c<length(_root.scoreprecheck); c++) {" ... are you sure length() is not a string function and type casting your number to a string and taking the # of characters instead of the literal value?

I'm pretty sure the substr() function is a string function as well -- once again I don't know how flash handles this. If its anything like c++ then you're in trouble because automatic type casting is very dangerous.

... and as rufo said, _root.scorecheck-= "1"; ... you're trying to subtract a string from a number -- you won't get a favorable result doing that either.

just curious, how long have you been coding with flash? Flash's language is "actionscript" right?

**lajkonik86** · 04:45 AM

well when i check in my editor using trace everything seems to work just fine.
But when i try it in my flashplayer it doesn't calcullate well. This makes it very hard to debug and i don't know why flasheditor and flashplayer are doing stuff different.

Been doing actionscript for about a month

P.S. how do i go about converting a number to a string and vice versa

**Rufo** · 10-09-2004, 08:00 PM

Quote:

Originally Posted by kisk

are you sure length() is not a string function and type casting your number to a string and taking the # of characters instead of the literal value?

As far as I know, the argument to length() can be either a string or a number. To be sure, you could put
length(_root.scoreprecheck+'')
to force it to be cast into a string.

Quote:

Originally Posted by kisk

I'm pretty sure the substr() function is a string function as well

Yes, though I am fairly sure this works OK on numbers (integers at least).

Rufo

**lajkonik86** · 10-10-2004, 04:00 AM

At the moment i'm using this code
in flash.

PHP Code:


			
_root.scoreprecheck = _root.score*63478256;

    _root.scorecheck = 0;

    for (c=0; c<length(_root.scoreprecheck); c++) {

        _root.scorecheck+= _root.scoreprecheck.substr(c,1)*(c+1);

        _root.scorecheck-= 1;

    }

    trace(_root.scorecheck);

}

When running in swismax it outputs for a score of 200 177
when running in browser it outputs for a score of 200 -11

That leads me to conclude that the c<length(_root.scoreprecheck) part is working well.
Because the -1 part is being done.
So this bit of code
_root.scorecheck+= _root.scoreprecheck.substr(c,1)*(c+1);
Doesnt work in the browser... But does work in the editor.

Hope anybody knows how to fix this