108 lines
3.2 KiB
PHP
108 lines
3.2 KiB
PHP
<?php
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/*
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* Tic Tac Toe gnieark's IA
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* For programming challenge https://github.com/jeannedhack/programmingChallenges
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* Gnieark 2015
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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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function scoreCases($grid,$myChar,$hisChar,$profondeur=0){
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//lister les cases vides de la grille
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foreach($grid as $key => $case){
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$tempGrid=$grid;
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$tempGrid[$key]=$myChar;
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if($case==""){ //on ne "score que les cases qui sont libres
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//tester si je gagne en jouant là
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if(isGridWin($tempGrid)){
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if(fmod($profondeur,2)==0){
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$scores[$key]=10-$profondeur;
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}else{
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$scores[$key]=$profondeur-10;
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}
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}elseif(nbFreeCases($tempGrid)==0){
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$scores[$key]=0;
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}else{
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//trouver le plus grand score dans l'array plus profond en valeur absolue
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$scores[$key]=0;
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$scoresDeeper=scoreCases($tempGrid,$hisChar,$myChar,$profondeur+1);
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foreach($scoresDeeper as $scD){
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if(abs($scD)>abs($scores[$key])){
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$scores[$key]=$scD;
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}
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}
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}
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}
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}
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//print_r($scores);print_r($grid);echo "------------";
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return $scores;
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}
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function nbFreeCases($grille){
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$nb=0;
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foreach($grille as $case){
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if ($case==""){
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$nb++;
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}
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}
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return $nb;
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}
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function isGridWin($grille){
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if(
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(($grille['0-0']==$grille['0-1'])&&($grille['0-1']==$grille['0-2'])&&($grille['0-2']!==""))
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OR (($grille['1-0']==$grille['1-1'])&&($grille['1-1']==$grille['1-2'])&&($grille['1-2']!==""))
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OR (($grille['2-0']==$grille['2-1'])&&($grille['2-1']==$grille['2-2'])&&($grille['2-2']!==""))
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OR (($grille['0-0']==$grille['1-0'])&&($grille['1-0']==$grille['2-0'])&&($grille['2-0']!==""))
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OR (($grille['0-1']==$grille['1-1'])&&($grille['1-1']==$grille['2-1'])&&($grille['2-1']!==""))
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OR (($grille['0-2']==$grille['1-2'])&&($grille['1-2']==$grille['2-2'])&&($grille['2-2']!==""))
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OR (($grille['0-0']==$grille['1-1'])&&($grille['1-1']==$grille['2-2'])&&($grille['2-2']!==""))
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OR (($grille['0-2']==$grille['1-1'])&&($grille['1-1']==$grille['2-0'])&&($grille['2-0']!==""))
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){
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return true;
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}
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return false;
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}
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$cases=array("0-0","0-1","0-2","1-0","1-1","1-2","2-0","2-1","2-2");
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//filling array
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$freeCases=array();
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foreach($cases as $case){
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if (!isset($_GET[$case])){
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echo "wrong parameters ".$case; die;
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}
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if($_GET[$case]==""){
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$freeCases[]=$case;
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}else{
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if ($_GET[$case]!==$_GET['you']){
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$hisChar=$_GET[$case];
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}
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}
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$grille[$case]=$_GET[$case];
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}
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if(!isset($_GET['you'])){
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echo "wrong parameters 2"; die;
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}
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if (count($freeCases)==0){
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echo "error. Grid is full, beach!";
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die;
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}
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if (isGridWin($grille)){
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echo ("erreur, la grille a déjà été gagnée"); die;
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}
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if(!isset($hisChar)){
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// si le caractere ennemi n'a pas été trouvé (il n'a pas déjà joué), on le définit arbitrairement.
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if($_GET['you']=="!"){
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$hisChar="?";
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}else{
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$hisChar="!";
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}
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}
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$scoresDesCases=scoreCases($grille,htmlentities($_GET['you']),$hisChar);
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$sc=-10000;
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foreach($scoresDesCases as $key=>$caseValue){
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if($caseValue>$sc){
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$sc=$caseValue;
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$beastCase=$key;
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}
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}
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echo $beastCase;
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