/*
 * resspr.c
 *
 * Loading sprites
 *
 * © 1994-1998 Straylight
 */

/*----- Licensing note ----------------------------------------------------*
 *
 * This file is part of Straylight's Steel library.
 *
 * Steel is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * Steel is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Steel.  If not, write to the Free Software Foundation,
 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */

#include <stdlib.h>

#include "os.h"
#include "resspr.h"
#include "mem.h"
#include "msgs.h"
#include "werr.h"
#include "res.h"

static sprite_area *resspr__area=(sprite_area *)1;

/*
 * void resspr_init(void)
 *
 * Use
 *  Loads the applications `Sprites' file into memory.
 */

void resspr_init(void)
{
  os_filestr f;
  int size;

  /* --- Find the file and it's length --- */

  f.name=res_name("Sprites");
  f.action=17;
  if (os_file(&f) || f.action!=1)
    return;

  /* --- Create a buffer the right size --- *
   *
   * The sprite file size may not be word aligned -- cope with this.
   */

  size=(f.start+7) & ~3;
  resspr__area=mem_alloc(size);
  if (!resspr__area)
  {
    werr(FALSE,msgs_lookup("ressprNEM:Not enough memory to load sprites."));
    exit(0);
  }

  /* --- Load the sprites into memory --- */

  resspr__area->size=size;
  f.action=16;
  f.loadaddr=((int)resspr__area)+4;
  f.execaddr=0;
  os_file(&f);
}

/*
 * sprite_area *resspr_area(void)
 *
 * Use
 *  Returns the address of the application's sprite area.
 */

sprite_area *resspr_area(void)
{
  return (resspr__area);
}