src/staticobject.cpp

   1 /*
   2 Minetest
   3 Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
   4
   5 This program is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU Lesser General Public License as published by
   7 the Free Software Foundation; either version 2.1 of the License, or
   8 (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU Lesser General Public License for more details.
  14
  15 You should have received a copy of the GNU Lesser General Public License along
  16 with this program; if not, write to the Free Software Foundation, Inc.,
  17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 */
  19
  20 #include "staticobject.h"
  21 #include "util/serialize.h"
  22 #include "server/serveractiveobject.h"
  23
  24 StaticObject::StaticObject(const ServerActiveObject *s_obj, const v3f &pos_):
  25         type(s_obj->getType()),
  26         pos(pos_)
  27 {
  28         s_obj->getStaticData(&data);
  29 }
  30
  31 void StaticObject::serialize(std::ostream &os)
  32 {
  33         // type
  34         writeU8(os, type);
  35         // pos
  36         writeV3F1000(os, pos);
  37         // data
  38         os<<serializeString16(data);
  39 }
  40 void StaticObject::deSerialize(std::istream &is, u8 version)
  41 {
  42         // type
  43         type = readU8(is);
  44         // pos
  45         pos = readV3F1000(is);
  46         // data
  47         data = deSerializeString16(is);
  48 }
  49
  50 void StaticObjectList::serialize(std::ostream &os)
  51 {
  52         // version
  53         u8 version = 0;
  54         writeU8(os, version);
  55
  56         // count
  57         size_t count = m_stored.size() + m_active.size();
  58         // Make sure it fits into u16, else it would get truncated and cause e.g.
  59         // issue #2610 (Invalid block data in database: unsupported NameIdMapping version).
  60         if (count > U16_MAX) {
  61                 errorstream << "StaticObjectList::serialize(): "
  62                         << "too many objects (" << count << ") in list, "
  63                         << "not writing them to disk." << std::endl;
  64                 writeU16(os, 0);  // count = 0
  65                 return;
  66         }
  67         writeU16(os, count);
  68
  69         for (StaticObject &s_obj : m_stored) {
  70                 s_obj.serialize(os);
  71         }
  72
  73         for (auto &i : m_active) {
  74                 StaticObject s_obj = i.second;
  75                 s_obj.serialize(os);
  76         }
  77 }
  78 void StaticObjectList::deSerialize(std::istream &is)
  79 {
  80         if (m_active.size()) {
  81                 errorstream << "StaticObjectList::deSerialize(): "
  82                         << "deserializing objects while " << m_active.size()
  83                         << " active objects already exist (not cleared). "
  84                         << m_stored.size() << " stored objects _were_ cleared"
  85                         << std::endl;
  86         }
  87         m_stored.clear();
  88
  89         // version
  90         u8 version = readU8(is);
  91         // count
  92         u16 count = readU16(is);
  93         for(u16 i = 0; i < count; i++) {
  94                 StaticObject s_obj;
  95                 s_obj.deSerialize(is, version);
  96                 m_stored.push_back(s_obj);
  97         }
  98 }
  99