#include <stdio.h>
#include "aalib.h"

#define XSIZ aa_imgwidth(context)
#define YSIZ (aa_imgheight(context)-4)
#define MAXTABLE (256*5)
static aa_context *context;
static aa_renderparams *params;
static aa_palette palette;
static unsigned int table[MAXTABLE];
__AA_CONST static int pal[] =
{
  0, 0, 0, 0, 0, 6, 0, 0, 6, 0, 0, 7, 0, 0, 8, 0, 0, 8, 0, 0, 9, 0, 0, 10,
2, 0, 10, 4, 0, 9, 6, 0, 9, 8, 0, 8, 10, 0, 7, 12, 0, 7, 14, 0, 6, 16, 0, 5,
  18, 0, 5, 20, 0, 4, 22, 0, 4, 24, 0, 3, 26, 0, 2, 28, 0, 2, 30, 0, 1, 32, 0, 0,
  32, 0, 0, 33, 0, 0, 34, 0, 0, 35, 0, 0, 36, 0, 0, 36, 0, 0, 37, 0, 0, 38, 0, 0,
  39, 0, 0, 40, 0, 0, 40, 0, 0, 41, 0, 0, 42, 0, 0, 43, 0, 0, 44, 0, 0, 45, 0, 0,
  46, 1, 0, 47, 1, 0, 48, 2, 0, 49, 2, 0, 50, 3, 0, 51, 3, 0, 52, 4, 0, 53, 4, 0,
  54, 5, 0, 55, 5, 0, 56, 6, 0, 57, 6, 0, 58, 7, 0, 59, 7, 0, 60, 8, 0, 61, 8, 0,
  63, 9, 0, 63, 9, 0, 63, 10, 0, 63, 10, 0, 63, 11, 0, 63, 11, 0, 63, 12, 0, 63, 12, 0,
  63, 13, 0, 63, 13, 0, 63, 14, 0, 63, 14, 0, 63, 15, 0, 63, 15, 0, 63, 16, 0, 63, 16, 0,
  63, 17, 0, 63, 17, 0, 63, 18, 0, 63, 18, 0, 63, 19, 0, 63, 19, 0, 63, 20, 0, 63, 20, 0,
  63, 21, 0, 63, 21, 0, 63, 22, 0, 63, 22, 0, 63, 23, 0, 63, 24, 0, 63, 24, 0, 63, 25, 0,
  63, 25, 0, 63, 26, 0, 63, 26, 0, 63, 27, 0, 63, 27, 0, 63, 28, 0, 63, 28, 0, 63, 29, 0,
  63, 29, 0, 63, 30, 0, 63, 30, 0, 63, 31, 0, 63, 31, 0, 63, 32, 0, 63, 32, 0, 63, 33, 0,
  63, 33, 0, 63, 34, 0, 63, 34, 0, 63, 35, 0, 63, 35, 0, 63, 36, 0, 63, 36, 0, 63, 37, 0,
  63, 38, 0, 63, 38, 0, 63, 39, 0, 63, 39, 0, 63, 40, 0, 63, 40, 0, 63, 41, 0, 63, 41, 0,
  63, 42, 0, 63, 42, 0, 63, 43, 0, 63, 43, 0, 63, 44, 0, 63, 44, 0, 63, 45, 0, 63, 45, 0,
  63, 46, 0, 63, 46, 0, 63, 47, 0, 63, 47, 0, 63, 48, 0, 63, 48, 0, 63, 49, 0, 63, 49, 0,
  63, 50, 0, 63, 50, 0, 63, 51, 0, 63, 52, 0, 63, 52, 0, 63, 52, 0, 63, 52, 0, 63, 52, 0,
  63, 53, 0, 63, 53, 0, 63, 53, 0, 63, 53, 0, 63, 54, 0, 63, 54, 0, 63, 54, 0, 63, 54, 0,
  63, 54, 0, 63, 55, 0, 63, 55, 0, 63, 55, 0, 63, 55, 0, 63, 56, 0, 63, 56, 0, 63, 56, 0,
  63, 56, 0, 63, 57, 0, 63, 57, 0, 63, 57, 0, 63, 57, 0, 63, 57, 0, 63, 58, 0, 63, 58, 0,
  63, 58, 0, 63, 58, 0, 63, 59, 0, 63, 59, 0, 63, 59, 0, 63, 59, 0, 63, 60, 0, 63, 60, 0,
  63, 60, 0, 63, 60, 0, 63, 60, 0, 63, 61, 0, 63, 61, 0, 63, 61, 0, 63, 61, 0, 63, 62, 0,
  63, 62, 0, 63, 62, 0, 63, 62, 0, 63, 63, 0, 63, 63, 1, 63, 63, 2, 63, 63, 3, 63, 63, 4,
  63, 63, 5, 63, 63, 6, 63, 63, 7, 63, 63, 8, 63, 63, 9, 63, 63, 10, 63, 63, 10, 63, 63, 11,
  63, 63, 12, 63, 63, 13, 63, 63, 14, 63, 63, 15, 63, 63, 16, 63, 63, 17, 63, 63, 18, 63, 63, 19,
  63, 63, 20, 63, 63, 21, 63, 63, 21, 63, 63, 22, 63, 63, 23, 63, 63, 24, 63, 63, 25, 63, 63, 26,
  63, 63, 27, 63, 63, 28, 63, 63, 29, 63, 63, 30, 63, 63, 31, 63, 63, 31, 63, 63, 32, 63, 63, 33,
  63, 63, 34, 63, 63, 35, 63, 63, 36, 63, 63, 37, 63, 63, 38, 63, 63, 39, 63, 63, 40, 63, 63, 41,
  63, 63, 42, 63, 63, 42, 63, 63, 43, 63, 63, 44, 63, 63, 45, 63, 63, 46, 63, 63, 47, 63, 63, 48,
  63, 63, 49, 63, 63, 50, 63, 63, 51, 63, 63, 52, 63, 63, 52, 63, 63, 53, 63, 63, 54, 63, 63, 55,
  63, 63, 56, 63, 63, 57, 63, 63, 58, 63, 63, 59, 63, 63, 60, 63, 63, 61, 63, 63, 62, 63, 63, 63};


static void
initialize (void)
{
  int i;
  srandomdev();
  context = aa_autoinit (&aa_defparams);
  if (context == NULL)
    {
      printf ("Failed to initialize aalib\n");
      exit (1);
    }
  aa_autoinitkbd (context, 0);
  params = aa_getrenderparams ();
  for (i = 0; i < 256; i++)
    aa_setpalette (palette, i, pal[i * 3] * 4,
		   pal[i * 3 + 1] * 4, pal[i * 3 + 2] * 4);
  aa_hidecursor (context);
}
static void
uninitialize (void)
{
  aa_close (context);
  exit (0);
}
static void
gentable (void)
{
  unsigned int i, p2;
  int minus = 800 / YSIZ;
  if (minus == 0)
    minus = 1;
  for (i = 0; i < MAXTABLE; i++)
    {
      if (i > minus)
	{
	  p2 = (i - minus) / 5;
	  table[i] = p2;
	}
      else
	table[i] = 0;
    }
}

#define MA 5
static void
firemain (void)
{
  register unsigned int i;
  unsigned char *p;
  char *bitmap = aa_image (context);
  i = 0;
#define END (bitmap + XSIZ * YSIZ)
  for (p = bitmap; p <= (unsigned char *) (END); p += 1)
    {
      *p = table[(*(p + XSIZ - 1) + *(p + XSIZ + 1) + *(p + XSIZ)) +
		 (*(p + 2 * XSIZ - 1) + *(p + 2 * XSIZ + 1))];
    }
}

#define min(x,y) ((x)<(y)?(x):(y))
static void
drawfire (void)
{
  unsigned int i, last1, i1, i2;
  static int loop = 0, sloop = 0, height = 0;
  register unsigned char *p;
  char *bitmap = aa_image (context);

  height++;
  loop--;
  if (loop < 0)
    loop = random () % 3, sloop++;;
  i1 = 1;
  i2 = 4 * XSIZ + 1;
  for (p = (char *) bitmap + XSIZ * (YSIZ + 0);
       p < ((unsigned char *) bitmap + XSIZ * (YSIZ + 1));
       p++, i1 += 4, i2 -= 4)
    {
      last1 = random () % min (i1, min (i2, height));
      i = random () % 6;
      for (; p < (unsigned char *) bitmap + XSIZ * (YSIZ + 1) && i != 0;
	   p++, i--, i1 += 4, i2 -= 4)
	*p = last1, last1 += random () % 6 - 2, *(p + XSIZ) = last1, last1 +=
	  random () % 6 - 2;
      *(p + 2 * XSIZ) = last1, last1 += random () % 6 - 2;
    }
  i = 0;
  firemain ();
  aa_renderpalette (context, palette, params, 0, 0, aa_scrwidth (context),
		    aa_scrheight (context));
  aa_flush (context);
}
static void
game (void)
{
  int event;
  gentable ();
  while (!(event = aa_getevent (context, 0)) || event == AA_RESIZE)
    {
      drawfire ();
    }
}
int
main (int argc, char **argv)
{
  if (!aa_parseoptions (NULL, NULL, &argc, argv) || argc != 1)
    {
      printf ("%s", aa_help);
      exit (1);
    }
  initialize ();
  aa_resizehandler (context, (void *) aa_resize);
  game ();
  uninitialize ();
  return 1;
}