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;
  33         v3f pos;
  34         std::string data;
  35
  36         StaticObject():
  37                 type(0),
  38                 pos(0,0,0)
  39         {
  40         }
  41         StaticObject(u8 type_, v3f pos_, const std::string &data_):
  42                 type(type_),
  43                 pos(pos_),
  44                 data(data_)
  45         {
  46         }
  47
  48         void serialize(std::ostream &os);
  49         void deSerialize(std::istream &is, u8 version);
  50 };
  51
  52 class StaticObjectList
  53 {
  54 public:
  55         /*
  56                 Inserts an object to the container.
  57                 Id must be unique (active) or 0 (stored).
  58         */
  59         void insert(u16 id, StaticObject obj)
  60         {
  61                 if(id == 0)
  62                 {
  63                         m_stored.push_back(obj);
  64                 }
  65                 else
  66                 {
  67                         if(m_active.find(id) != m_active.end())
  68                         {
  69                                 dstream<<"ERROR: StaticObjectList::insert(): "
  70                                                 <<"id already exists"<<std::endl;
  71                                 FATAL_ERROR("StaticObjectList::insert()");
  72                         }
  73                         m_active[id] = obj;
  74                 }
  75         }
  76
  77         void remove(u16 id)
  78         {
  79                 assert(id != 0); // Pre-condition
  80                 if(m_active.find(id) == m_active.end())
  81                 {
  82                         dstream<<"WARNING: StaticObjectList::remove(): id="<<id
  83                                         <<" not found"<<std::endl;
  84                         return;
  85                 }
  86                 m_active.erase(id);
  87         }
  88
  89         void serialize(std::ostream &os);
  90         void deSerialize(std::istream &is);
  91
  92         /*
  93                 NOTE: When an object is transformed to active, it is removed
  94                 from m_stored and inserted to m_active.
  95                 The caller directly manipulates these containers.
  96         */
  97         std::vector<StaticObject> m_stored;
  98         std::map<u16, StaticObject> m_active;
  99
 100 private:
 101 };
 102
 103 #endif
 104