@@ -11,20 +11,20 @@ build_monster($_REQUEST['seed'], $_REQUEST['size']); * GDlib is required! */ function build_monster($seed='',$size='') { - // init random seed - if($seed) srand( hexdec(substr(md5($seed),0,6)) ); + // create 16 byte hash from seed + $hash = md5($seed); - // throw the dice for body parts + // calculate part values from seed $parts = array( - 'legs' => rand(1,5), - 'hair' => rand(1,5), - 'arms' => rand(1,5), - 'body' => rand(1,15), - 'eyes' => rand(1,15), - 'mouth'=> rand(1,10) + 'legs' => _get_monster_part(substr($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 backgound + // create background $monster = @imagecreatetruecolor(120, 120) or die("GD image create failed"); $white = imagecolorallocate($monster, 255, 255, 255); @@ -42,7 +42,10 @@ function build_monster($seed='',$size='') { // color the body if($part == 'body') { - $color = imagecolorallocate($monster, rand(20,235), rand(20,235), rand(20,235)); + $r = _get_monster_part(substr($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,$color); } } @@ -64,5 +67,10 @@ function build_monster($seed='',$size='') { imagepng($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: monsterid.php 2ea20d43dea51a958e66f9526c53a73491d777d6 Gina Haeussge osd@foosel.net http://github.com/dokufreaks/plugin-avatar/commit/2e0c1c6e18d9ca12a36c69bdf0ae58bd71270096 2e0c1c6e18d9ca12a36c69bdf0ae58bd71270096 2009-01-11T04:36:46-08:00 2009-01-11T04:36:46-08:00 Switch from srand to hash-based generation of monsterid darcs-hash:20090111123646-2b4f5-7bf013d2360b86c60af608039fada3cf1f8a0d6e.gz 05d954846e608a4c0d906818c443f916ac49f7ad Gina Haeussge osd@foosel.net