Conways Spiel des Lebens in PHP und OOP

[deadshox]

Hallo Leute, ich bastel grad an einer Version von Conways Spiel des Lebens in PHP mit OOP.

Leider habe ich da irgendwo Probleme. ;(

Hier mal mein Quellcode.

PHP-Code:

<?
session_start();

class field
{
    var $row = 3;
    var $col = 3;

    var $alive = '<img src="alive.png" alt="alive" width="30" height="30" border="1" />';
    var $dead = '<img src="dead.png" alt="dead" width="30" height="30" border="1" />';
    
    var $cells = array();
    
    function init_gen()
    {        
        for($i = 0; $i <= $this->row*$this->col-1; $i++)
        {
            $this->cells[$i] = 0;
        }
        $this->cells[0] = 1;
        $this->cells[2] = 1;
        $this->cells[4] = 1;
        
        $_SESSION['get_cells'] = implode(',', $this->cells);
    }
    
    function next_gen()
    {
        $this->cells = explode(',', $_SESSION['get_cells']);
        
        $pitch = $this->row;
        $alive_neighbours = 0;
        $dead_neighbours = 0;
            
        for($i = 0; $i <= $this->row*$this->col-1; $i++)
        {
            if(0 == $this->cells[$i])
            {
                # if weiß Nachbarn = 3 = 1*grün Geboren
                if(1 == $this->cells[$i-1] AND 1 == $this->cells[$i+1] AND 1 == $this->cells[$i-$pitch] OR 1 == $this->cells[$i-1] AND 1 == $this->cells[$i+1] AND 1 == $this->cells[$i+$pitch] OR 1 == $this->cells[$i+$pitch] AND 1 == $this->cells[$i+1] AND 1 == $this->cells[$i-$pitch] OR 1 == $this->cells[$i+$pitch] AND 1 == $this->cells[$i-1] AND 1 == $this->cells[$i-$pitch])
                {
                    $dead_neighbours++;
                }
                if(3 == $dead_neighbours)
                {
                    $this->cells[$i] = 1;
                }
            }
            elseif(1 == $this->cells[$i])
            {
                # if grün Nachbarn = 2 OR 3 Überlebt
                if(1 == $this->cells[$i-1] AND 1 == $this->cells[$i+1] AND 1 == $this->cells[$i-$pitch] OR 1 == $this->cells[$i-1] AND 1 == $this->cells[$i+1] AND 1 == $this->cells[$i+$pitch] OR 1 == $this->cells[$i+$pitch] AND 1 == $this->cells[$i+1] AND 1 == $this->cells[$i-$pitch] OR 1 == $this->cells[$i+$pitch] AND 1 == $this->cells[$i-1] AND 1 == $this->cells[$i-$pitch])
                {
                    $this->cells[$i] = 1;
                }
                elseif(1 == $this->cells[$i-1] AND 1 == $this->cells[$i+1] OR 1 == $this->cells[$i-$pitch] AND 1 == $this->cells[$i+$pitch] OR 1 == $this->cells[$i-1] AND 1 == $this->cells[$i+$pitch] OR 1 == $this->cells[$i+1] AND 1 == $this->cells[$i+$pitch] OR 1 == $this->cells[$i-$pitch] AND 1 == $this->cells[$i-1] OR 1 == $this->cells[$i-$pitch] AND 1 == $this->cells[$i+1])
                {
                    $this->cells[$i] = 1;
                }
                
                # if grün Nachbarn < 2 Stirbt OR grün Nachbarn >= 5 Stirb
                if(1 == $this->cells[$i-1] OR 1 == $this->cells[$i+1] OR 1 == $this->cells[$i-$pitch] OR 1 == $this->cells[$i+$pitch])
                {
                    $alive_eighbours++;

                    if(1 == $alive_neighbours OR 4 < $alive_neighbours)
                    {
                        $this->cells[$i] = 0;
                    }
                }
            }
        }
        
        $_SESSION['get_cells'] = implode(',', $this->cells);
    }
    
    function show()
    {
        $this->cells = explode(',', $_SESSION['get_cells']);
        
        $block_row = $this->row*30 + $this->row*2;
        $block_col = $this->col*30 + $this->col*2;
        
        echo "\n".'<div>'."\n".'<p>'."\n".'<a href="?next-gen=go">Next-Gen</a> - <a href="gol.php">Re Start</a>'."\n".'</p>'."\n";
        
        echo '<p style="border: 1px solid black; width: '.$block_row.'px; height: '.$block_col.'px; margin: 0; padding: 0;">'."\n";
        
        foreach($this->cells as $value)
        {
            if(1 == $value)
            {
                echo $this->alive;
            }
            else
            {
                echo $this->dead;
            }
        }

        echo "\n".'</p>'."\n".'</div>';
    }
}

$gol = new field();

if(!'go' == $_GET['next-gen'])
{
    $gol->init_gen();
}
else
{
    $gol->next_gen();
}

$gol->show();

?>

Ich hoffe er ist für euch Verständlich. Mein derzeitiges Problem liegt in der Funktion next_gen(), den es wird keine Neue Generation erstellt. ;( Und ich weiß nicht mehr weiter mir raucht schon den ganzen Tag der Kopf.

Stell ich vielleicht die Falschen IF fragen in der next_gen() Function?