<?php/*** Netlands World Server is the coordinator of the VR in the Netlands Project* Copyright (C) 2002 Ricard Pillosu* * This program is free software; you can redistribute it and/or* modify it under the terms of the GNU General Public License* as published by the Free Software Foundation; either version 2* of the License, or (at your option) any later version.* * This program is distributed in the hope that it will be useful,* but WITHOUT ANY WARRANTY; without even the implied warranty of* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the* GNU General Public License for more details.* * You should have received a copy of the GNU General Public License* along with this program; if not, write to the Free Software* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.*//* vim: set expandtab tabstop=4 shiftwidth=4 *//*** Class door, the links between the rooms** With this class we define the invisible, abstract link between the rooms.* The only way to moving in the VR is using this "exits" to another room.* Thay can have a lot of properties (open, closed, transparent, etc...)** @see entity* @see room** @version $Id: class_door.php,v 1.4 2002/09/29 12:31:59 doneval Exp $* @author Ricard Pillosu <ricardpillosu@dorna.com>* @copyright Ricard Pillosu 2002* @since Sun, 04 Aug 2002 20:00:41 +0200*/class door extends entity {    /**    * @var object References to the room where this door leads    */    private $target;    /**    * Init vars    * @param object $entity_list    the reference to the list where I belong    * @param string $key            The key to be used by this entity    */    function __construct(&$entity_list, $key = NULL) {        parent::__construct($entity_list, $key);        $this->type = entity_list::T_DOOR;        $this->target = NULL;    }    /**    * Update game vars array    */    function update_game_vars($vars_to_update) {        // Filter use of target_id        foreach(array_keys($vars_to_update) as $var_to_update) {            switch($var_to_update) {            case "target_id":                $target_id = $vars_to_update["target_id"];                if($this->set_target_id($target_id) == FALSE) {                    unset($vars_to_update);                }            break;            }        }        // Add the rest of non-important variables        $this->game_vars = array_merge($this->game_vars, $vars_to_update);        return(TRUE);    }    function &get_target() {        return($this->target);    }    function set_target_id($key) {        $entity = & $this->entity_list->get_entity($key, FALSE);        if($entity == FALSE) {            return(FALSE);        }        $this->target = & $entity;        return(TRUE);    }    function transport_entity(&$entity) {        // Check that $this->target is OK        $this->entity_list->is_entity($this->target);        // Check that the entity and I are in the same place        if($this->parent->is_my_child($entity, FALSE) == FALSE) {            throw new exception("entity and door are not in same place");        }        // Check that $this->target is OK        $this->entity_list->is_entity($this->target);        // Move it!        $this->entity_list->move_entity_to($entity, $this->target, $this);                // Ok all        return(TRUE);    }}?>