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monsterid.php
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monsterid.php
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<?php
/**
* @license GPL 2 (http://www.gnu.org/licenses/gpl.html)
* @author Andreas Gohr <[email protected]>
*/
build_monster($_REQUEST['seed'], $_REQUEST['size']);
/**
* Generates a monster for the given seed
* GDlib is required!
*/
function build_monster($seed='',$size='') {
// create 16 byte hash from seed
$hash = md5($seed);
// calculate part values from seed
$parts = array(
'legs' => _get_monster_part(substr($hash, 0, 2), 1, 5),
'hair' => _get_monster_part(substr($hash, 2, 2), 1, 5),
'arms' => _get_monster_part(substr($hash, 4, 2), 1, 5),
'body' => _get_monster_part(substr($hash, 6, 2), 1, 15),
'eyes' => _get_monster_part(substr($hash, 8, 2), 1, 15),
'mouth'=> _get_monster_part(substr($hash, 10, 2), 1, 10),
);
// create background
$monster = @imagecreatetruecolor(120, 120)
or die("GD image create failed");
$white = imagecolorallocate($monster, 255, 255, 255);
imagefill($monster,0,0,$white);
// add parts
foreach($parts as $part => $num) {
$file = dirname(__FILE__).'/parts/'.$part.'_'.$num.'.png';
$im = @imagecreatefrompng($file);
if(!$im) die('Failed to load '.$file);
imageSaveAlpha($im, true);
imagecopy($monster,$im,0,0,0,0,120,120);
imagedestroy($im);
// color the body
if($part == 'body') {
$r = _get_monster_part(substr($hash, 0, 4), 20, 235);
$g = _get_monster_part(substr($hash, 4, 4), 20, 235);
$b = _get_monster_part(substr($hash, 8, 4), 20, 235);
$color = imagecolorallocate($monster, $r, $g, $b);
imagefill($monster,60,60,$color);
}
}
// restore random seed
if($seed) srand();
// resize if needed, then output
if($size && $size < 400) {
$out = @imagecreatetruecolor($size,$size)
or die("GD image create failed");
imagecopyresampled($out,$monster,0,0,0,0,$size,$size,120,120);
header ("Content-type: image/png");
imagepng($out);
imagedestroy($out);
imagedestroy($monster);
}else{
header ("Content-type: image/png");
imagepng($monster);
imagedestroy($monster);
}
}
function _get_monster_part($seed, $lower = 0, $upper = 255) {
return hexdec($seed) % ($upper - $lower) + $lower;
}
// vim:ts=4:sw=4:et:enc=utf-8: