API tools faq
paste
Advertisement
sebbu

PHP Chess Game

sebbu
Aug 19th, 2014
127
0
Never
Add comment
Not a member of Pastebin yet? Sign Up, it unlocks many cool features!
PHP 3.38 KB | None | 0 0
raw download clone embed print report
  1. <!DOCTYPE html>
  2. <html>
  3. <head>
  4. <title>Chess</title>
  5. <meta charset="UTF-8"/>
  6. </head>
  7. <body>
  8.  
  9. <?php
  10. function is_black($c) {
  11.     return ($c==='B'||$c==='Black');
  12. }
  13. function is_white($c) {
  14.     return ($c==='W'||$c==='White');
  15. }
  16. abstract class Piece {
  17.     public $x;
  18.     public $y;
  19.     public $color;
  20.     public $parent;
  21.     public function __construct(&$parent=NULL) {
  22.         $this->parent=$parent;
  23.     }
  24.     public function can_move($diff_x, $diff_y) { return false; }
  25.     public function can_eat($diff_x, $diff_y) { return $this->can_move($diff_x, $diff_y); }
  26. }
  27. class Pawn extends Piece {
  28.     public function can_move($diff_x, $diff_y) {
  29.         /*if(is_black($c)) {
  30.             if($y===1) return ($diff_y>=1 && $diff_y<=2);
  31.             else return ($diff_y==1);
  32.         }
  33.         elseif(is_white($c)) {//*/
  34.             if($this->y===6) return ($diff_y<=-1 && $diff_y>=-2);
  35.             else return ($diff_y==-1);
  36.         /*}
  37.         return false;//*/
  38.     }
  39.     public function can_eat($diff_x, $diff_y) {
  40.         /*if(is_black($c)) {
  41.             return (abs($diff_x)==1 && $diff_y==1);
  42.         }
  43.         elseif(is_white($c)) {//*/
  44.             return (abs($diff_x)==1 && $diff_y==-1);
  45.         /*}
  46.         return false;//*/
  47.     }
  48.     public function __toString() {
  49.         return 'Pawn';
  50.     }
  51. }
  52. class Rook extends Piece {
  53.     public function can_move($diff_x, $diff_y) {
  54.         return ( ($diff_x==0 && abs($diff_y)>0) || ($diff_y==0 && abs($diff_x)>0) );
  55.         //return ($diff_x^$diff_y>0);
  56.     }
  57.     public function can_eat($diff_x, $diff_y) {
  58.         return (
  59.             $this->can_move($diff_x, $diff_y) &&
  60.             $this->parent->is_free($this->x, $this->y, $this->x+$diff_x, $this->y+$diff_y)
  61.         );
  62.     }
  63.     public function __toString() {
  64.         return 'Rook';
  65.     }
  66. }
  67. //black up (y=0), white down (y=7)
  68. class board {
  69.     public $grid;
  70.     public $width;
  71.     public $height;
  72.     public function __construct() {
  73.         $this->grid=array();
  74.         $this->width=8;
  75.         $this->height=8;
  76.         for($i=0;$i<$this->height;++$i) {
  77.             $this->grid[$i]=array();
  78.             for($j=0;$j<$this->width;++$j) {
  79.                 $this->grid[$i][$j]='&nbsp;';
  80.             }
  81.         }
  82.     }
  83.     public function is_empty($x, $y) {
  84.         return ( ! ($grid[$y][$x] instanceof Piece) );
  85.     }
  86.     public function is_free($src_x, $src_y, $dst_x, $dst_y) {
  87.         assert( $src_x==$dst_x || $src_y==$dst_y || (($src_x-$dst_x)==($src_y-$dst_y)) );
  88.         $diff_x=$dst_x-$src_x;
  89.         $diff_y=$dst_y-$src_y;
  90.         $px=$diff_x/abs($diff_x);
  91.         $py=$diff_y/abs($diff_y);
  92.         for($i=1; $i<max(abs($diff_x),abs($diff_y)); ++$i) {
  93.             if($this->get_piece($src_x+$px*$i, $src_y+$py*$i) instanceof Piece) return false;
  94.         }
  95.         return true;
  96.     }
  97.     public function pos_exists($x, $y) {
  98.         return ($x>=0 && $x<$this->width && $y>=0 && $y<=$this->height);
  99.     }
  100.     public function get_piece($x, $y) {
  101.         return $this->grid[$y][$x];
  102.     }
  103. };
  104. $board=new board();
  105. //var_dump($board->grid);
  106. $board->grid[7][0]='Rook';
  107. $board->grid[7][1]='Knight';
  108. $board->grid[7][2]='Bishop';
  109. $board->grid[7][3]='Queen';
  110. $board->grid[7][4]='King';
  111. $board->grid[7][5]='Bishop';
  112. $board->grid[7][6]='Knight';
  113. for($i=0;$i<8;++$i) {
  114.     $board->grid[6][$i]=new Pawn($board);
  115. }
  116. $board->grid[7][7]='Rook';
  117. //var_dump($board->grid);
  118. var_dump($board->grid[6][0]->parent->grid[7][7]);
  119. $test=new Rook($board);
  120. $test->x=0;
  121. $test->y=7;
  122. $board->grid[7][0]=clone $test;
  123. $test->x=7;
  124. $board->grid[7][7]=clone $test;
  125. var_dump($board->grid[7][0]->x);
  126. ?><table border="1"><?php
  127. for($y=0;$y<8;++$y) {
  128. ?>
  129.     <tr>
  130. <?php
  131.     for($x=0;$x<8;++$x) {
  132. ?>      <td><?php echo $board->get_piece($x, $y); ?></td>
  133. <?php
  134.     }
  135. ?>  </tr><?php
  136. }
  137. ?>
  138. </table>
  139.  
  140. </body>
  141. </html>
Advertisement
Add Comment
Please, Sign In to add comment
Advertisement
Public Pastes
Advertisement
We use cookies for various purposes including analytics. By continuing to use Pastebin, you agree to our use of cookies as described in the Cookies Policy.  OK, I Understand
Not a member of Pastebin yet?
Sign Up, it unlocks many cool features!