php/gnugo.php

   1 <?php
   2
   3 if ($_SERVER['HTTP_HOST'] == "eidogo.com") {
   4     define("PATH_GNUGO", "/var/www/eidogo.com/gnugo/interface/gnugo");
   5 } else {
   6     define("PATH_GNUGO", "/Users/tin/Sites/eidogo/gnugo/gnugo/interface/gnugo");
   7 }
   8
   9 $sgf = $_REQUEST['sgf'];
  10 $color = $_REQUEST['move'] == "W" ? "W" : "B";
  11 $size = (int)$_REQUEST['size']; // needed for coordinate conversion
  12 $komi = (float)($_REQUEST['komi'] ? $_REQUEST['komi'] : 0);
  13 $mn = (int)$_REQUEST['mn'];
  14
  15 // give gnugo our current game state
  16 $sgf_file = tempnam("/tmp", "eidogo");
  17 file_put_contents($sgf_file, $sgf);
  18
  19 if ($_REQUEST['move'] == "est") {
  20     $result= shell_exec(PATH_GNUGO . " --score --komi $komi --infile $sgf_file --until $mn");
  21     unlink($sgf_file);
  22     echo $result;
  23     exit;
  24 }
  25
  26 // tell gnugo to generate a move
  27 $command_file = tempnam("/tmp", "eidogo");
  28 file_put_contents($command_file, "genmove $color\nquit\n");
  29
  30 $result = shell_exec(PATH_GNUGO . " --level 7 --mode gtp --infile $sgf_file --gtp-input $command_file");
  31
  32 unlink($sgf_file);
  33 unlink($command_file);
  34
  35 $move = substr($result, 2, strpos($result, "\n")-2);
  36
  37 if (preg_match("/([A-Z])([0-9]+)/", $move, $matches)) {
  38     // convert the move to SGF coordinates
  39     list(,$x, $y) = $matches;
  40     $x = strtolower($x);
  41     if (ord($x) >= ord('i')) {
  42         $x = chr(ord($x)-1);
  43     }
  44     $y = chr(($size - $y) + ord('a'));
  45     echo "$x$y";
  46 } elseif ($move == "PASS") {
  47     echo "tt";
  48 } elseif (strpos($move, "resign") !== false) {
  49     echo "resign";
  50 } else {
  51     echo $result;
  52 }
  53
  54
  55 ?>