function imagebmp(&$img, $filename = false)
{
$wid = imagesx($img);
$hei = imagesy($img);
$wid_pad = str_pad('', $wid % 4, "");
$size = 54 + ($wid + $wid_pad) * $hei * 3;
//fixed
//prepare & save header
$header['identifier'] = 'BM';
$header['file_size'] = dword($size);
$header['reserved'] = dword(0);
$header['bitmap_data'] = dword(54);
$header['header_size'] = dword(40);
$header['width'] = dword($wid);
$header['height'] = dword($hei);
$header['planes'] = word(1);
$header['bits_per_pixel'] = word(24);
$header['compression'] = dword(0);
$header['data_size'] = dword(0);
$header['h_resolution'] = dword(0);
$header['v_resolution'] = dword(0);
$header['colors'] = dword(0);
$header['important_colors'] = dword(0);
if ($filename) {
$f = fopen($filename, "wb");
foreach ($header as $h) {
fwrite($f, $h);
}
//save pixels
for ($y = $hei - 1; $y >= 0; $y--) {
for ($x = 0; $x < $wid; $x++) {
$rgb = imagecolorat($img, $x, $y);
fwrite($f, byte3($rgb));
}
fwrite($f, $wid_pad);
}
fclose($f);
} else {
foreach ($header as $h) {
echo $h;
}
//save pixels
for ($y = $hei - 1; $y >= 0; $y--) {
for ($x = 0; $x < $wid; $x++) {
$rgb = imagecolorat($img, $x, $y);
echo byte3($rgb);
}
echo $wid_pad;
}
}
}
public function __construct($b)
{
$this->xs = dword($b, 6);
$this->ys = dword($b, 10);
//printf("Loading map: %03d*%03d\n", $this->xs, $this->ys);
$n = $this->xs * $this->ys;
$i = 14;
$x = 0;
$y = 0;
$this->m = array();
for ($xy = 0; $xy < $n; $xy++) {
$this->m[$x++][$y] = dword($b, $i + 16) == 0 ? true : false;
if ($x == $this->xs) {
$x = 0;
$y++;
}
$i += 20;
}
}
