Piškvorky naslepo, http://php.vrana.cz/piskvorky-naslepo.php#d-33531

piskvorky.php

Ahoj v piškvorkách naslepo.
Povolené příkazy jsou:
new - nová hra
quit - konec
[a-i][0-9] - tah na pole, kde řada je pozice a, b, c, d, e, f, g, h, i. Sloupec je 1 až 9.
Formát zápisu je např. e5.
<?php
class BlindTicTacToe {
  protected $field;
  protected $x, $y;
  protected $playing = 'o';

  public function play($size) {
    $this->field = array_fill(1, $size, array_fill(1, $size, '_'));
    while (true) {
      $this->playing = ($this->playing == 'x' ? 'o' : 'x');
      if (!$this->getInput()) {
        return;
      }
      $this->field[$this->y][$this->x] = $this->playing;

      if ($this->isWinning()) {
        echo "VÝHRA! Gratulace hráči $this->playing.\n";
        break;
      } elseif ($this->isFull()) {
        echo "Remíza, hrací pole zaplněno.\n";
        break;
      }
    }

    // zobrazení hracího pole
    foreach ($this->field as $row) {
      foreach ($row as $val) {
        echo "$val ";
      }
      echo "\n";
    }
  }

  protected function getInput() {
    while (true) {
      echo "Hráč $this->playing: ";
      $input = rtrim(fgets(STDIN));
      if ($input == "new") {
        return false;
      } elseif ($input == "quit") {
        echo "Naviděnou.\n";
        exit;
      }
      $this->y = ord(substr($input, 0, 1)) - ord('a') + 1;
      $this->x = substr($input, 1, 1);
      if (strlen($input) != 2 || !isset($this->field[$this->y][$this->x])) {
        echo "Tah ve špatném formátu.\n";
      } elseif ($this->field[$this->y][$this->x] != '_') {
        echo "Pole je zabráno, hraj znovu.\n";
      } else {
        return true;
      }
    }
  }

  protected function isWinning() {
    return $this->isWinningInDirection(1, 0)
      || $this->isWinningInDirection(0, 1)
      || $this->isWinningInDirection(1, 1)
      || $this->isWinningInDirection(1, -1)
    ;
  }

  protected function isWinningInDirection($a, $b) {
    // průzkum jedním směrem
    for ($i = 1; $i < 5; $i++) {
      $yb = $this->y - $i * $b;
      $xa = $this->x - $i * $a;
      if (!isset($this->field[$yb][$xa]) || $this->field[$yb][$xa] != $this->field[$this->y][$this->x]) {
        break;
      }
    }
    // průzkum druhým směrem
    for ($j = 1; $j < 5; $j++) {
      $yb = $this->y + $j * $b;
      $xa = $this->x + $j * $a;
      if (!isset($this->field[$yb][$xa]) || $this->field[$yb][$xa] != $this->field[$this->y][$this->x]) {
        return ($i + $j - 1 >= 5);
      }
    }
    return true;
  }

  protected function isFull() {
    foreach ($this->field as $row) {
      foreach ($row as $val) {
        if ($val == '_') {
          return false;
        }
      }
    }
    return true;
  }

}

$ticTacToe = new BlindTicTacToe;
$size = 9;
while (true) {
  $ticTacToe->play($size);
  echo "Nová hra.\n";
}