From: G DOT DegliEsposti AT ads DOT it
To: fjgpp AT delorie DOT com
Message-ID: <C125659B.002E50AC.00@vega.ads.it>
Date: Thu, 29 Jan 1998 09:46:45 +0100
Subject: Re: Allegro Datafiles - More Problems
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>Leave it to me to run into more problems :)  First problem, is when I
>try and substitute a datafile object with a variable.  Example:
>
>   draw_sprite(screen,datafile[spritename].dat,16,16);
>
>spritename is a char with a 20 character array, containing "BLANK".  I
>get this error when compiling:
>
>Error: array subscript is not an integer

of course: you are trying to do this illegal operation:

  draw_sprite(screen,datafile["BLANK"].dat,16,16);

I suppose this is what you really want to do:

  draw_sprite(screen,datafile[BLANK].dat,16,16);

where BLANK is #define'd somewhere...

the 'spritename' must be an int containing BLANK. If you need to use
different
values assign different ints to spritename.
>Second problem: having 2 datafiles opened at the same time.  Having a
>datafile already opened seems to cause the second one to return 1.  My
>two DATAFILE declarations are different.  My code to open the second
>datafile is below:
>
>{
>   strcpy(get_filename(buf), "c:/maped/testspr.dat");
>   user_datafile = load_datafile(buf);
>   if (!user_datafile) {
>      allegro_exit();
>      printf("Error loading TESTSPR.DAT!\n\n");
>      return 1;
>   }
>}
>
>I *believe* that the problem is due to there already being a datafile
>open, but am not positive.  The datafile is not corrupt, and it's header
>is correct and in-place.

I agree with you.

ciao
  Giacomo