100 lines
2.8 KiB
PHP
100 lines
2.8 KiB
PHP
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<?php
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header('Access-Control-Allow-Origin: *');
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header('Access-Control-Allow-Methods: GET, POST');
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header('Access-Control-Allow-Headers: Origin, X-Requested-With, Content-Type, Accept');
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/*
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* Tic Tac Toe gnieark's IA V2
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* Gnieark 2016
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* licensed under the Do What the Fuck You Want to Public License http://www.wtfpl.net/
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*/
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//get the query
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$message=json_decode(file_get_contents('php://input'), TRUE);
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if($message['action'] == "init"){
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//juste le petit message d'init
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echo '{"name":"gnieark"}';
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die;
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}
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function score_case($map,$me,$him,$case,$depth=0){
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if($depth%2 == 0){
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$isOpponent = false;
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}else{
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$isOpponent = true;
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}
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//test si la case est gagnante
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$newMap=$map;
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$newMap[$case] = $me;
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if(
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(($newMap['0-0']==$newMap['0-1'])&&($newMap['0-1']==$newMap['0-2'])&&($newMap['0-2']!==""))
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OR (($newMap['1-0']==$newMap['1-1'])&&($newMap['1-1']==$newMap['1-2'])&&($newMap['1-2']!==""))
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OR (($newMap['2-0']==$newMap['2-1'])&&($newMap['2-1']==$newMap['2-2'])&&($newMap['2-2']!==""))
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OR (($newMap['0-0']==$newMap['1-0'])&&($newMap['1-0']==$newMap['2-0'])&&($newMap['2-0']!==""))
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OR (($newMap['0-1']==$newMap['1-1'])&&($newMap['1-1']==$newMap['2-1'])&&($newMap['2-1']!==""))
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OR (($newMap['0-2']==$newMap['1-2'])&&($newMap['1-2']==$newMap['2-2'])&&($newMap['2-2']!==""))
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OR (($newMap['0-0']==$newMap['1-1'])&&($newMap['1-1']==$newMap['2-2'])&&($newMap['2-2']!==""))
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OR (($newMap['0-2']==$newMap['1-1'])&&($newMap['1-1']==$newMap['2-0'])&&($newMap['2-0']!==""))
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){
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if($isOpponent){
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return $depth - 10;
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}else{
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return 10 - $depth;
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}
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}else{
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if($depth == 4){
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return 0;
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}else{
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if($isOpponent){
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$sc=choose_better_cell($newMap,$him,$me,$depth);
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}else{
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$sc=choose_better_cell($newMap,$him,$me,$depth + 1);
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}
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return -$sc[1];
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}
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}
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}
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function choose_better_cell($map,$me,$him,$depth=0){
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$betterCell="";
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$betterScore=-100;
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static $arrCells= array('0-0','0-1','0-2','1-0','1-1','1-2','2-0','2-1','2-2');
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foreach($arrCells as $cellKey){
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if($map[$cellKey] == ""){
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$sc = score_case($map, $me,$him,$cellKey,$depth);
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if( $sc > $betterScore ){
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$betterCell = $cellKey;
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$betterScore= $sc;
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}
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}
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}
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return array($betterCell,$betterScore);
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}
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//count free cases
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$freeCells=0;
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for($x = 0; $x < 3; $x++){
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for($y = 0; $y < 3; $y++){
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if($message['board'][$x."-".$y] == ""){
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$freeCells ++;
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}elseif($message['board'][$x."-".$y] !== $message['you']){
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$hisSymbol=$message['board'][$x."-".$y];
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}
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}
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}
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if(!isset($hisSymbol)){
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if($message['you'] == 'X'){
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$hisSymbol='O';
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}else{
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$hisSymbol="X";
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}
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}
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echo '{"play":"'.choose_better_cell($message['board'],$message['you'], $hisSymbol,9 - $freeCells)[0].'"}';
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