cpt extended class of post with virtual attributes based on meta

gistfile1.php

class Player extends Post
{
    private $_points = false;
    public static $after_save = array('update_points');

    public function set_points($points)
    {
        $this->_points = $points;
    }

    public function get_points()
    {
         return $this->_points ?: $this->meta('points', false, true);
    }

    public function update_points()
    {
         if (!$this->_points) return;
         $points_meta = $this->meta('points', true, true);
         $points_meta->meta_value = $this->_points;
         $points_meta->save();
    }
}