Path: chuka.playstation.co.uk!news
From: "Matt Verran" <matt@frktl.freeserve.co.uk>
Newsgroups: scee.yaroze.programming.2d_graphics
Subject: font routine hangs
Date: Wed, 16 Jun 1999 16:10:45 +0100
Organization: PlayStation Net Yaroze (SCEE)
Lines: 45
Message-ID: <7k8eu8$75r18@chuka.playstation.co.uk>
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Help, please! This is driving me NUTS.

I have a font routine that takes a string and renders it to the screen. It
uses a tim that contains all the letters in the font and adjusts the u and v
vaules of a sprite to display the correct one.

Sometimes it just hangs inside the below while loop after 8 iterations and
sometimes it works fine. This is the same code without any changes or
recompilations??  Can anyone see anything in the below while loop that would
make it do that?


---

while( *text!=0 )
    {
    c = *text;
    if ( c< start_char || c>end_char )     // if out of range
      {
      //printf(" ",c);                      // print space
      }
    else                                  // if in range
      {
      c = c - start_char;
      //printf("%d ::",c);
      across = c % columns;
      down = (c-across) / columns;
      //printf("%d across, %d down \n",across,down);

      spriteInfo.u = (fntInfo->start_u) + (across*(fntInfo->char_width));
      spriteInfo.v = (fntInfo->start_v) + (down*(fntInfo->char_height));
      GsSortFastSprite(&spriteInfo,
&world_ordering_table[output_buffer_index], 0);
      }
    spriteInfo.x = spriteInfo.x + (fntInfo->char_width);   // move cursor
along
    text++;
    printf( "*");
    }