659 lines
21 KiB
PHP
659 lines
21 KiB
PHP
<?php
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function tictac_install() {
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register_hook('app_menu', 'addon/tictac/tictac.php', 'tictac_app_menu');
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}
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function tictac_uninstall() {
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unregister_hook('app_menu', 'addon/tictac/tictac.php', 'tictac_app_menu');
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}
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function tictac_app_menu($a,&$b) {
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$b['app_menu'] .= '<a href="tictac">' . t('Three Dimensional Tic-Tac-Toe') . '</a><br />';
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}
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function tictac_module() {
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return;
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}
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function tictac_content(&$a) {
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$o = '';
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if($_POST['move']) {
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$handicap = $a->argv[1];
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$mefirst = $a->argv[2];
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$dimen = $a->argv[3];
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$yours = $a->argv[4];
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$mine = $a->argv[5];
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$yours .= $_POST['move'];
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}
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elseif($a->argc > 1) {
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$handicap = $a->argv[1];
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$dimen = 3;
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}
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else {
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$dimen = 3;
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}
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$o .= '<h3>3D Tic-Tac-Toe</h3><br />';
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$t = new tictac($dimen,$handicap,$mefirst,$yours,$mine);
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$o .= $t->play();
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$o .= '<a href="tictac">' . t('New game') . '</a><br />';
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$o .= '<a href="tictac/1">' . t('New game with handicap') . '</a><br />';
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$o .= '<p>' . t('Three dimensional tic-tac-toe is just like the traditional game except that it is played on multiple levels simultaneously.');
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$o .= t('In this case there are three levels. You win by getting three in a row on any level, as well as up, down, and diagonally across the different levels.');
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$o .= '</p><p>';
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$o .= t('The handicap game disables the center position on the middle level because the player claiming this square often has an unfair advantage.');
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$o .= '</p>';
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return $o;
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}
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class tictac {
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private $dimen;
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private $first_move = true;
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private $handicap = 0;
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private $yours;
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private $mine;
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private $winning_play;
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private $you;
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private $me;
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private $debug = 1;
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private $crosses = array('011','101','110','112','121','211');
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/*
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'001','010','011','012','021',
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'101','110','111','112','121',
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'201','210','211','212','221');
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*/
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private $corners = array(
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'000','002','020','022',
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'200','202','220','222');
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private $planes = array(
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array('000','001','002','010','011','012','020','021','022'), // horiz 1
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array('100','101','102','110','111','112','120','121','122'), // 2
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array('200','201','202','210','211','212','220','221','222'), // 3
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array('000','010','020','100','110','120','200','210','220'), // vert left
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array('000','001','002','100','101','102','200','201','202'), // vert top
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array('002','012','022','102','112','122','202','212','222'), // vert right
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array('020','021','022','120','121','122','220','221','222'), // vert bot
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array('010','011','012','110','111','112','210','211','212'), // left vertx
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array('001','011','021','101','111','221','201','211','221'), // top vertx
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array('000','001','002','110','111','112','220','221','222'), // diag top
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array('020','021','022','110','111','112','200','201','202'), // diag bot
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array('000','010','020','101','111','121','202','212','222'), // diag left
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array('002','012','022','101','111','121','200','210','220'), // diag right
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array('002','011','020','102','111','120','202','211','220'), // diag x
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array('000','011','022','100','111','122','200','211','222') // diag x
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);
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private $winner = array(
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array('000','001','002'), // board 0 winners - left corner across
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array('000','010','020'), // down
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array('000','011','022'), // diag
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array('001','011','021'), // middle-top down
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array('010','011','012'), // middle-left across
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array('002','011','020'), // right-top diag
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array('002','012','022'), // right-top down
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array('020','021','022'), // bottom-left across
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array('100','101','102'), // board 1 winners
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array('100','110','120'),
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array('100','111','122'),
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array('101','111','121'),
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array('110','111','112'),
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array('102','111','120'),
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array('102','112','122'),
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array('120','121','122'),
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array('200','201','202'), // board 2 winners
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array('200','210','220'),
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array('200','211','222'),
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array('201','211','221'),
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array('210','211','212'),
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array('202','211','220'),
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array('202','212','222'),
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array('220','221','222'),
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array('000','100','200'), // top-left corner 3d
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array('000','101','202'),
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array('000','110','220'),
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array('000','111','222'),
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array('001','101','201'), // top-middle 3d
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array('001','111','221'),
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array('002','102','202'), // top-right corner 3d
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array('002','101','200'),
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array('002','112','222'),
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array('002','111','220'),
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array('010','110','210'), // left-middle 3d
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array('010','111','212'),
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array('011','111','211'), // middle-middle 3d
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array('012','112','212'), // right-middle 3d
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array('012','111','210'),
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array('020','120','220'), // bottom-left corner 3d
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array('020','110','200'),
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array('020','121','222'),
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array('020','111','202'),
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array('021','121','221'), // bottom-middle 3d
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array('021','111','201'),
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array('022','122','222'), // bottom-right corner 3d
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array('022','121','220'),
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array('022','112','202'),
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array('022','111','200')
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);
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function __construct($dimen,$handicap,$mefirst,$yours,$mine) {
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$this->dimen = 3;
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$this->handicap = (($handicap) ? 1 : 0);
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$this->mefirst = (($mefirst) ? 1 : 0);
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$this->yours = str_replace('XXX','',$yours);
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$this->mine = $mine;
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$this->you = $this->parse_moves('you');
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$this->me = $this->parse_moves('me');
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if(strlen($yours))
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$this->first_move = false;
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}
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function play() {
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if($this->first_move) {
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if(rand(0,1) == 1) {
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$o .= '<div class="error-message">' . t('You go first...') . '</div><br />';
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$this->mefirst = 0;
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$o .= $this->draw_board();
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return $o;
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}
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$o .= '<div class="error-message">' . t('I\'m going first this time...') . ' </div><br />';
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$this->mefirst = 1;
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}
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if($this->check_youwin()) {
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$o .= '<div class="error-message">' . t('You won!') . '</div><br />';
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$o .= $this->draw_board();
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return $o;
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}
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if($this->fullboard())
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$o .= '<div class="error-message">' . t('"Cat" game!') . '</div><br />';
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$move = $this->winning_move();
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if(strlen($move)) {
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$this->mine .= $move;
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$this->me = $this->parse_moves('me');
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}
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else {
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$move = $this->defensive_move();
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if(strlen($move)) {
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$this->mine .= $move;
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$this->me = $this->parse_moves('me');
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}
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else {
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$move = $this->offensive_move();
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if(strlen($move)) {
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$this->mine .= $move;
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$this->me = $this->parse_moves('me');
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}
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}
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}
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if($this->check_iwon())
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$o .= '<div class="error-message">' . t('I won!') . '</div><br />';
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if($this->fullboard())
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$o .= '<div class="error-message">' . t('"Cat" game!') . '</div><br />';
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$o .= $this->draw_board();
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return $o;
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}
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function parse_moves($player) {
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if($player == 'me')
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$str = $this->mine;
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if($player == 'you')
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$str = $this->yours;
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$ret = array();
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while(strlen($str)) {
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$ret[] = substr($str,0,3);
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$str = substr($str,3);
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}
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return $ret;
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}
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function check_youwin() {
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for($x = 0; $x < count($this->winner); $x ++) {
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if(in_array($this->winner[$x][0],$this->you) && in_array($this->winner[$x][1],$this->you) && in_array($this->winner[$x][2],$this->you)) {
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$this->winning_play = $this->winner[$x];
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return true;
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}
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}
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return false;
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}
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function check_iwon() {
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for($x = 0; $x < count($this->winner); $x ++) {
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if(in_array($this->winner[$x][0],$this->me) && in_array($this->winner[$x][1],$this->me) && in_array($this->winner[$x][2],$this->me)) {
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$this->winning_play = $this->winner[$x];
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return true;
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}
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}
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return false;
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}
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function defensive_move() {
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for($x = 0; $x < count($this->winner); $x ++) {
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if(($this->handicap) && in_array('111',$this->winner[$x]))
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continue;
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if(in_array($this->winner[$x][0],$this->you) && in_array($this->winner[$x][1],$this->you) && (! in_array($this->winner[$x][2],$this->me)))
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return($this->winner[$x][2]);
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if(in_array($this->winner[$x][0],$this->you) && in_array($this->winner[$x][2],$this->you) && (! in_array($this->winner[$x][1],$this->me)))
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return($this->winner[$x][1]);
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if(in_array($this->winner[$x][1],$this->you) && in_array($this->winner[$x][2],$this->you) && (! in_array($this->winner[$x][0],$this->me)))
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return($this->winner[$x][0]);
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}
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return '';
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}
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function winning_move() {
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for($x = 0; $x < count($this->winner); $x ++) {
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if(($this->handicap) && in_array('111',$this->winner[$x]))
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continue;
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if(in_array($this->winner[$x][0],$this->me) && in_array($this->winner[$x][1],$this->me) && (! in_array($this->winner[$x][2],$this->you)))
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return($this->winner[$x][2]);
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if(in_array($this->winner[$x][0],$this->me) && in_array($this->winner[$x][2],$this->me) && (! in_array($this->winner[$x][1],$this->you)))
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return($this->winner[$x][1]);
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if(in_array($this->winner[$x][1],$this->me) && in_array($this->winner[$x][2],$this->me) && (! in_array($this->winner[$x][0],$this->you)))
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return($this->winner[$x][0]);
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}
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}
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function offensive_move() {
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shuffle($this->planes);
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shuffle($this->winner);
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shuffle($this->corners);
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shuffle($this->crosses);
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if(! count($this->me)) {
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if($this->handicap) {
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$p = $this->uncontested_plane();
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foreach($this->corners as $c)
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if((in_array($c,$p))
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&& (! $this->is_yours($c)) && (! $this->is_mine($c)))
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return($c);
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}
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else {
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if((! $this->marked_yours(1,1,1)) && (! $this->marked_mine(1,1,1)))
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return '111';
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$p = $this->uncontested_plane();
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foreach($this->crosses as $c)
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if((in_array($c,$p))
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&& (! $this->is_yours($c)) && (! $this->is_mine($c)))
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return($c);
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}
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}
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if($this->handicap) {
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if(count($this->me) >= 1) {
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if(count($this->get_corners($this->me)) == 1) {
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if(in_array($this->me[0],$this->corners)) {
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$p = $this->my_best_plane();
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foreach($this->winner as $w) {
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if((in_array($w[0],$this->you))
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|| (in_array($w[1],$this->you))
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|| (in_array($w[2],$this->you)))
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continue;
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if(in_array($w[0],$this->corners)
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&& in_array($w[2],$this->corners)
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&& in_array($w[0],$p) && in_array($w[2],$p)) {
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if($this->me[0] == $w[0])
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return($w[2]);
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elseif($this->me[0] == $w[2])
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return($w[0]);
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}
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}
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}
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}
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else {
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$r = $this->get_corners($this->me);
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if(count($r) > 1) {
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$w1 = array(); $w2 = array();
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foreach($this->winner as $w) {
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if(in_array('111',$w))
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continue;
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if(($r[0] == $w[0]) || ($r[0] == $w[2]))
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$w1[] = $w;
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if(($r[1] == $w[0]) || ($r[1] == $w[2]))
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$w2[] = $w;
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}
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if(count($w1) && count($w2)) {
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foreach($w1 as $a) {
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foreach($w2 as $b) {
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if((in_array($a[0],$this->you))
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|| (in_array($a[1],$this->you))
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|| (in_array($a[2],$this->you))
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|| (in_array($b[0],$this->you))
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|| (in_array($b[1],$this->you))
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|| (in_array($b[2],$this->you)))
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continue;
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if(($a[0] == $b[0]) && ! $this->is_mine($a[0])) {
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return $a[0];
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}
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elseif(($a[2] == $b[2]) && ! $this->is_mine($a[2])) {
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return $a[2];
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}
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}
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}
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}
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}
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}
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}
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}
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//&& (count($this->me) == 1) && (count($this->you) == 1)
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// && in_array($this->you[0],$this->corners)
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// && $this->is_neighbor($this->me[0],$this->you[0])) {
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// Yuck. You foiled my plan. Since you obviously aren't playing to win,
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// I'll try again. You may keep me busy for a few rounds, but I'm
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// gonna' get you eventually.
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// $p = $this->uncontested_plane();
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// foreach($this->crosses as $c)
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// if(in_array($c,$p))
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// return($c);
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// }
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// find all the winners containing my points.
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$mywinners = array();
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foreach($this->winner as $w)
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foreach($this->me as $m)
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if((in_array($m,$w)) && (! in_array($w,$mywinners)))
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$mywinners[] = $w;
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// find all the rules where my points are in the center.
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$trythese = array();
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if(count($mywinners)) {
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foreach($mywinners as $w) {
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foreach($this->me as $m) {
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if(($m == $w[1]) && ($this->uncontested_winner($w))
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&& (! in_array($w,$trythese)))
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$trythese[] = $w;
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}
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}
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}
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$myplanes = array();
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for($p = 0; $p < count($this->planes); $p ++) {
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if($this->handicap && in_array('111',$this->planes[$p]))
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continue;
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foreach($this->me as $m)
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if((in_array($m,$this->planes[$p]))
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&& (! in_array($this->planes[$p],$myplanes)))
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$myplanes[] = $this->planes[$p];
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}
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shuffle($myplanes);
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// find all winners which share an endpoint, and which are uncontested
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$candidates = array();
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if(count($trythese) && count($myplanes)) {
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foreach($trythese as $t) {
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foreach($this->winner as $w) {
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if(! $this->uncontested_winner($w))
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continue;
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if((in_array($t[0],$w)) || (in_array($t[2],$w))) {
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foreach($myplanes as $p)
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if(in_array($w[0],$p) && in_array($w[1],$p) && in_array($w[2],$p) && ($w[1] != $this->me[0]))
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if(! in_array($w,$candidates))
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$candidates[] = $w;
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}
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}
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}
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}
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// Find out if we are about to force a win.
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// Looking for two winning vectors with a common endpoint
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// and where we own the middle of both - we are now going to
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// grab the endpoint. The game isn't yet over but we've already won.
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if(count($candidates)) {
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foreach($candidates as $c) {
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if(in_array($c[1],$this->me)) {
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// return endpoint
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foreach($trythese as $t)
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if($t[0] == $c[0])
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return($t[0]);
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elseif($t[2] == $c[2])
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return($t[2]);
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}
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}
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// find opponents planes
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$yourplanes = array();
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for($p = 0; $p < count($this->planes); $p ++) {
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if($this->handicap && in_array('111',$this->planes[$p]))
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continue;
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if(in_array($this->you[0],$this->planes[$p]))
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$yourplanes[] = $this->planes[$p];
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}
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shuffle($this->winner);
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foreach($candidates as $c) {
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// We now have a list of winning strategy vectors for our second point
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// Pick one that will force you into defensive mode.
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// Pick a point close to you so we don't risk giving you two
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// in a row when you block us. That would force *us* into
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// defensive mode.
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// We want: or: not:
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|
// X|O| X| | X| |
|
|
// |O| O|O| |O|
|
|
// | | | | |O|
|
|
|
|
if(count($this->you) == 1) {
|
|
foreach($this->winner as $w) {
|
|
if(in_array($this->me[0], $w) && in_array($c[1],$w)
|
|
&& $this->uncontested_winner($w)
|
|
&& $this->is_neighbor($this->you[0],$c[1])) {
|
|
return($c[1]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// You're somewhere else entirely or have made more than one move
|
|
// - any strategy vector which puts you on the defense will have to do
|
|
|
|
foreach($candidates as $c) {
|
|
foreach($this->winner as $w) {
|
|
if(in_array($this->me[0], $w) && in_array($c[1],$w)
|
|
&& $this->uncontested_winner($w)) {
|
|
return($c[1]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// worst case scenario, no strategy we can play,
|
|
// just find an empty space and take it
|
|
|
|
for($x = 0; $x < $this->dimen; $x ++)
|
|
for($y = 0; $y < $this->dimen; $y ++)
|
|
for($z = 0; $z < $this->dimen; $z ++)
|
|
if((! $this->marked_yours($x,$y,$z))
|
|
&& (! $this->marked_mine($x,$y,$z))) {
|
|
if($this->handicap && $x == 1 && $y == 1 && $z == 1)
|
|
continue;
|
|
return(sprintf("%d%d%d",$x,$y,$z));
|
|
}
|
|
|
|
return '';
|
|
}
|
|
|
|
function marked_yours($x,$y,$z) {
|
|
$str = sprintf("%d%d%d",$x,$y,$z);
|
|
if(in_array($str,$this->you))
|
|
return true;
|
|
return false;
|
|
}
|
|
|
|
function marked_mine($x,$y,$z) {
|
|
$str = sprintf("%d%d%d",$x,$y,$z);
|
|
if(in_array($str,$this->me))
|
|
return true;
|
|
return false;
|
|
}
|
|
|
|
function is_yours($str) {
|
|
if(in_array($str,$this->you))
|
|
return true;
|
|
return false;
|
|
}
|
|
|
|
function is_mine($str) {
|
|
if(in_array($str,$this->me))
|
|
return true;
|
|
return false;
|
|
}
|
|
|
|
function get_corners($a) {
|
|
$total = array();
|
|
if(count($a))
|
|
foreach($a as $b)
|
|
if(in_array($b,$this->corners))
|
|
$total[] = $b;
|
|
return $total;
|
|
}
|
|
|
|
function uncontested_winner($w) {
|
|
if($this->handicap && in_array('111',$w))
|
|
return false;
|
|
$contested = false;
|
|
if(count($this->you)) {
|
|
foreach($this->you as $you)
|
|
if(in_array($you,$w))
|
|
$contested = true;
|
|
}
|
|
return (($contested) ? false : true);
|
|
}
|
|
|
|
|
|
function is_neighbor($p1,$p2) {
|
|
list($x1,$y1,$z1) = sscanf($p1, "%1d%1d%1d");
|
|
list($x2,$y2,$z2) = sscanf($p2, "%1d%1d%1d");
|
|
|
|
if((($x1 == $x2) || ($x1 == $x2+1) || ($x1 == $x2-1)) &&
|
|
(($y1 == $y2) || ($y1 == $y2+1) || ($y1 == $y2-1)) &&
|
|
(($z1 == $z2) || ($z1 == $z2+1) || ($z1 == $z2-1)))
|
|
return true;
|
|
return false;
|
|
|
|
}
|
|
|
|
function my_best_plane() {
|
|
|
|
$second_choice = array();
|
|
shuffle($this->planes);
|
|
for($p = 0; $p < count($this->planes); $p ++ ) {
|
|
$contested = 0;
|
|
if($this->handicap && in_array('111',$this->planes[$p]))
|
|
continue;
|
|
if(! in_array($this->me[0],$this->planes[$p]))
|
|
continue;
|
|
foreach($this->you as $m) {
|
|
if(in_array($m,$this->planes[$p]))
|
|
$contested ++;
|
|
}
|
|
if(! $contested)
|
|
return($this->planes[$p]);
|
|
if($contested == 1)
|
|
$second_choice = $this->planes[$p];
|
|
}
|
|
return $second_choice;
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
function uncontested_plane() {
|
|
$freeplane = true;
|
|
shuffle($this->planes);
|
|
$pl = $this->planes;
|
|
|
|
for($p = 0; $p < count($pl); $p ++ ) {
|
|
if($this->handicap && in_array('111',$pl[$p]))
|
|
continue;
|
|
foreach($this->you as $m) {
|
|
if(in_array($m,$pl[$p]))
|
|
$freeplane = false;
|
|
}
|
|
if(! $freeplane) {
|
|
$freeplane = true;
|
|
continue;
|
|
}
|
|
if($freeplane)
|
|
return($pl[$p]);
|
|
}
|
|
return array();
|
|
}
|
|
|
|
function fullboard() {
|
|
return false;
|
|
}
|
|
|
|
function draw_board() {
|
|
if(! strlen($this->yours))
|
|
$this->yours = 'XXX';
|
|
$o .= "<form action=\"tictac/{$this->handicap}/{$this->mefirst}/{$this->dimen}/{$this->yours}/{$this->mine}\" method=\"post\" />";
|
|
for($x = 0; $x < $this->dimen; $x ++) {
|
|
$o .= '<table>';
|
|
for($y = 0; $y < $this->dimen; $y ++) {
|
|
$o .= '<tr>';
|
|
for($z = 0; $z < $this->dimen; $z ++) {
|
|
$s = sprintf("%d%d%d",$x,$y,$z);
|
|
$winner = ((is_array($this->winning_play) && in_array($s,$this->winning_play)) ? " color: #FF0000; " : "");
|
|
$bordertop = (($y != 0) ? " border-top: 2px solid #000;" : "");
|
|
$borderleft = (($z != 0) ? " border-left: 2px solid #000;" : "");
|
|
if($this->handicap && $x == 1 && $y == 1 && $z == 1)
|
|
$o .= "<td style=\"width: 25px; height: 25px; $bordertop $borderleft\" align=\"center\"> </td>";
|
|
elseif($this->marked_yours($x,$y,$z))
|
|
$o .= "<td style=\"width: 25px; height: 25px; $bordertop $borderleft $winner\" align=\"center\">X</td>";
|
|
elseif($this->marked_mine($x,$y,$z))
|
|
$o .= "<td style=\"width: 25px; height: 25px; $bordertop $borderleft $winner\" align=\"center\">O</td>";
|
|
else {
|
|
$val = sprintf("%d%d%d",$x,$y,$z);
|
|
$o .= "<td style=\"width: 25px; height: 25px; $bordertop $borderleft\" align=\"center\"><input type=\"checkbox\" name=\"move\" value=\"$val\" onclick=\"this.form.submit();\" /></td>";
|
|
}
|
|
}
|
|
$o .= '</tr>';
|
|
}
|
|
$o .= '</table><br />';
|
|
}
|
|
$o .= '</form>';
|
|
return $o;
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|