Function bm_AllocLoadFileBitmap

bitmap/bitmain.cpp:701–861

Allocs and loads a bitmap Returns the handle of the loaded bitmap Returns -1 if something is wrong If mipped is non-zero, allocs extra space for mips and computes them

// Returns -1 if something is wrong
// If mipped is non-zero, allocs extra space for mips and computes them
int bm_AllocLoadFileBitmap(const char *fname, int mipped, int format) {
  CFILE *infile;
  if (!Bitmaps_initted) {
    Int3();
    mprintf(0, "Bitmaps not initted!!!\n");
    return -1;
  }

  char name[BITMAP_NAME_LEN];
  int n, src_bm = 0;
  int old_used;
  int overlay = 0;

  char *filename = (char *)fname;

  // due to a bug in some people's tablefile editors, we got to make sure there is
  // no path if there shouldn't be
  if (!cfexist(filename)) {
    // generate a possible new filename
    char *end_ptr, *start_ptr;
    start_ptr = (char *)fname;
    end_ptr = start_ptr + strlen(start_ptr) - 1;
    while ((end_ptr >= start_ptr) && (*end_ptr != '\\'))
      end_ptr--;
    if (end_ptr < start_ptr) {
      mprintf(0, "Unable to find bitmap %s\n", fname);
      return -1;
    }
    ASSERT(*end_ptr == '\\');
    end_ptr++;
    filename = end_ptr;
    mprintf(0, "Couldn't find %s, so gonna try %s\n", fname, filename);
  }

  // Check to see if this bitmap is already in memory, if so, just return that
  // bitmaps handle
  if ((n = bm_TestName(filename)) != -1) {
    mprintf(1, "Found duplicate bitmap %s.\n", GameBitmaps[n].name);
    old_used = GameBitmaps[n].used;
    GameBitmaps[n].used = 1;
    bm_FreeBitmap(n);
    GameBitmaps[n].used = old_used + 1;

    overlay = 1;
  }
  if (!overlay)
    bm_ChangeEndName(filename, name);
  else {
    strcpy(name, GameBitmaps[n].name);
  }
  if (strlen(name) > 33) {
    mprintf(0, "ERROR!! This bitmaps name is too long, try shortening it and retry!\n");
    return -1;
  }
  // Try to open the file.  If we can't load it from the network if possible
  infile = (CFILE *)cfopen(filename, "rb");
  if (!infile) {
    mprintf(0, "bm_AllocLoadFileBitmap: Can't open file named %s.\n", filename);