get.php

一个基于web的rpg游戏源代码

<?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 */

/**
* Used to "get" objekts of the room, or from other objekt. The objekts that
* are offered to us via "put", can be collected via "get".
*
*  Input: <get [me="x"] id="x" parent_id="x"/>
* Output: <get to="x"   id="x" parent_id="x" ok="<0|1>" msg="x"/>
*
* @param connection object  Reference to connection
* @param user       object  Reference to user
* @param character  object  Reference to character
* @param command    array   Contains command received
*/
function command_get(&$connection, &$user, &$character, $command)
{
    global $entities;

    try {
        // Check the objekt
        $t_objekt = & $entities->get_entity($command["id"]);
        if($t_objekt->type != entity_list::T_OBJK) {
            throw new exception("this is not an objekt");
        }
        // Check the source entity
        $t_entity = & $entities->get_entity($command["parent_id"]);
        switch($t_entity->type) {
        case entity_list::T_OBJK:
            // Check if this objekt is owned by you
            if($character->is_my_child($t_entity, FALSE) == FALSE) {
                throw new exception("parent_id objekt is not yours");
            }
        break;
        case entity_list::T_CHAR:
            // Check if this character is near you
            if($character->parent->is_my_child($t_entity, FALSE) == FALSE) {
                throw new exception("parent_id character is not near");
            }
            // Check if the character owns this objekt
            if($t_entity->is_my_child($t_objekt, FALSE) == FALSE) {
                throw new exception("parent_id character have not the objekt");
            }
            // Check if the objekt is being offered to us
            if($t_objekt->offered_to != $character->get_key()) {
                throw new exception("objekt is not being offered to you");
            }
        break;
        case entity_list::T_ROOM:
            // Check if you are in this room
            if($t_entity->is_my_child($character, FALSE) == FALSE) {
                throw new exception("parent_id room is not here");
            }
            // Check if the objekt is in the room
            if($t_entity->is_my_child($t_objekt, FALSE) == FALSE) {
                throw new exception("parent_id room have not the objekt");
            }
        break;
        default:
            throw new exception("invalid parent_id type");
        break;
        }

        // move the entity
        $entities->move_entity_to($t_objekt, $character);

        // erase "offered_to" flag
        $t_objekt->offered_to = "0";

    } catch(exception $exception) {
        $answer = array(
            "ok"    => "0",
            "id"    => $command["id"],
            "msg"   => $exception->get_msg());
        return($answer);
    }
    
    // ok, all done :)
    $answer = array(
        "to"    => $character->get_key(),
        "ok"    => "1",
        "msg"   => "you get the objekt",
        "id"    => $t_objekt->get_key(),
        "parent_id" => $t_entity->get_key());
    return($answer);
}

?>