Function declaration order problem..

Started by AlphaDog November 15, 2005 09:08 PM

5 comments, last by WitchLord 19 years, 3 months ago

Author

122

November 15, 2005 09:08 PM

I'm guessing I have something configured incorrectly. I have setup a system that automatically loads scripts and calls Main(). I'm having strange behavior when calling functions in main() defined outside of main. If I have the following script:


void test( string @ s )
{
   string t = s;
}
void Main()
{
   test( "this is a test" );
}

I get an 'Null pointer access' error for the line 'string t = s', but if I set up the script this way:


void Main()
{
   test( "this is a test" );
}
void test( string @ s )
{
   string t = s;
}

Everything runs perfectly.. Is this by design? or have I setup something incorrectly. Thanks, Scott

[size=1]'Behold! It is not over unknown seas but back over well-known years that your quest must go; back to the bright strange things of infancy and the quick sun-drenched glimpses of magic that old scenes brought to wide young eyes.'

WitchLord

4,864

November 16, 2005 10:49 AM

By design it should not make a difference in what order the functions are implemented.

I need to look into this. I'll be back with more information as soon as possible.

AngelCode.com - game development and more - Reference DB - game developer references
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WitchLord

4,864

November 17, 2005 01:32 PM

I just tested both of these scripts using version 2.4.1b with the asCScriptString add on and everything worked fine, without any null-pointer access exceptions.

How did you register the string type? Maybe there is some error with the constructor and/or addref/release behaviours. Or possibly the assignment behaviour.

AngelCode.com - game development and more - Reference DB - game developer references
AngelScript - free scripting library - BMFont - free bitmap font generator - Tower - free puzzle game

AlphaDog

Author

122

November 17, 2005 02:01 PM

I knew it was something I was doing.. :)

I am using the asCScriptString included with the SDK and I am calling RegisterScriptString(), passing it my engine pointer created with asCreateScriptEngine. Looks like I'm going to have to dig a bit deeper into my code to see where I am going wrong. Thanks for looking at it.. I'll keep you updated..

~Scott

[Edited by - AlphaDog on November 17, 2005 2:01:07 PM]

WitchLord

4,864

November 17, 2005 04:26 PM

Can you reproduce the problem in a small test application (similar to the test_feature) that you can send to me?

AngelCode.com - game development and more - Reference DB - game developer references
AngelScript - free scripting library - BMFont - free bitmap font generator - Tower - free puzzle game

AlphaDog

Author

122

November 21, 2005 10:51 PM

It was my fault all along, it had to do with how I was managing the function ID for Main(). It is working perfectly now, thanks again for the help and keep up the great work.

~Scott

WitchLord

4,864

November 22, 2005 07:18 AM

Ahh, that's one less to worry about. Thanks for letting me know. [smile]

AngelCode.com - game development and more - Reference DB - game developer references
AngelScript - free scripting library - BMFont - free bitmap font generator - Tower - free puzzle game

Function declaration order problem..

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