src/staticobject.h

   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 #ifndef STATICOBJECT_HEADER
  21 #define STATICOBJECT_HEADER
  22
  23 #include "irrlichttypes_bloated.h"
  24 #include <string>
  25 #include <sstream>
  26 #include <vector>
  27 #include <map>
  28 #include "debug.h"
  29
  30 struct StaticObject
  31 {
  32         u8 type = 0;
  33         v3f pos;
  34         std::string data;
  35
  36         StaticObject() {}
  37         StaticObject(u8 type_, v3f pos_, const std::string &data_):
  38                 type(type_),
  39                 pos(pos_),
  40                 data(data_)
  41         {
  42         }
  43
  44         void serialize(std::ostream &os);
  45         void deSerialize(std::istream &is, u8 version);
  46 };
  47
  48 class StaticObjectList
  49 {
  50 public:
  51         /*
  52                 Inserts an object to the container.
  53                 Id must be unique (active) or 0 (stored).
  54         */
  55         void insert(u16 id, StaticObject obj)
  56         {
  57                 if(id == 0)
  58                 {
  59                         m_stored.push_back(obj);
  60                 }
  61                 else
  62                 {
  63                         if(m_active.find(id) != m_active.end())
  64                         {
  65                                 dstream<<"ERROR: StaticObjectList::insert(): "
  66                                                 <<"id already exists"<<std::endl;
  67                                 FATAL_ERROR("StaticObjectList::insert()");
  68                         }
  69                         m_active[id] = obj;
  70                 }
  71         }
  72
  73         void remove(u16 id)
  74         {
  75                 assert(id != 0); // Pre-condition
  76                 if(m_active.find(id) == m_active.end())
  77                 {
  78                         warningstream<<"StaticObjectList::remove(): id="<<id
  79                                         <<" not found"<<std::endl;
  80                         return;
  81                 }
  82                 m_active.erase(id);
  83         }
  84
  85         void serialize(std::ostream &os);
  86         void deSerialize(std::istream &is);
  87
  88         /*
  89                 NOTE: When an object is transformed to active, it is removed
  90                 from m_stored and inserted to m_active.
  91                 The caller directly manipulates these containers.
  92         */
  93         std::vector<StaticObject> m_stored;
  94         std::map<u16, StaticObject> m_active;
  95
  96 private:
  97 };
  98
  99 #endif
 100