src/serverobject.cpp

   1 /*
   2 Minetest-c55
   3 Copyright (C) 2010-2011 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 General Public License as published by
   7 the Free Software Foundation; either version 2 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 General Public License for more details.
  14
  15 You should have received a copy of the GNU 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 "serverobject.h"
  21 #include <fstream>
  22 #include "environment.h"
  23 #include "inventory.h"
  24
  25 core::map<u16, ServerActiveObject::Factory> ServerActiveObject::m_types;
  26
  27 ServerActiveObject::ServerActiveObject(ServerEnvironment *env, u16 id, v3f pos):
  28         ActiveObject(id),
  29         m_known_by_count(0),
  30         m_removed(false),
  31         m_static_exists(false),
  32         m_static_block(1337,1337,1337),
  33         m_env(env),
  34         m_base_position(pos)
  35 {
  36 }
  37
  38 ServerActiveObject::~ServerActiveObject()
  39 {
  40 }
  41
  42 ServerActiveObject* ServerActiveObject::create(u8 type,
  43                 ServerEnvironment *env, u16 id, v3f pos,
  44                 const std::string &data)
  45 {
  46         // Find factory function
  47         core::map<u16, Factory>::Node *n;
  48         n = m_types.find(type);
  49         if(n == NULL)
  50         {
  51                 // If factory is not found, just return.
  52                 dstream<<"WARNING: ServerActiveObject: No factory for type="
  53                                 <<type<<std::endl;
  54                 return NULL;
  55         }
  56
  57         Factory f = n->getValue();
  58         ServerActiveObject *object = (*f)(env, id, pos, data);
  59         return object;
  60 }
  61
  62 void ServerActiveObject::registerType(u16 type, Factory f)
  63 {
  64         core::map<u16, Factory>::Node *n;
  65         n = m_types.find(type);
  66         if(n)
  67                 return;
  68         m_types.insert(type, f);
  69 }
  70
  71
  72 /*
  73         TestSAO
  74 */
  75
  76 // Prototype
  77 TestSAO proto_TestSAO(NULL, 0, v3f(0,0,0));
  78
  79 TestSAO::TestSAO(ServerEnvironment *env, u16 id, v3f pos):
  80         ServerActiveObject(env, id, pos),
  81         m_timer1(0),
  82         m_age(0)
  83 {
  84         ServerActiveObject::registerType(getType(), create);
  85 }
  86
  87 ServerActiveObject* TestSAO::create(ServerEnvironment *env, u16 id, v3f pos,
  88                 const std::string &data)
  89 {
  90         return new TestSAO(env, id, pos);
  91 }
  92
  93 void TestSAO::step(float dtime, Queue<ActiveObjectMessage> &messages)
  94 {
  95         m_age += dtime;
  96         if(m_age > 10)
  97         {
  98                 m_removed = true;
  99                 return;
 100         }
 101
 102         m_base_position.Y += dtime * BS * 2;
 103         if(m_base_position.Y > 8*BS)
 104                 m_base_position.Y = 2*BS;
 105
 106         m_timer1 -= dtime;
 107         if(m_timer1 < 0.0)
 108         {
 109                 m_timer1 += 0.125;
 110                 //dstream<<"TestSAO: id="<<getId()<<" sending data"<<std::endl;
 111
 112                 std::string data;
 113
 114                 data += itos(0); // 0 = position
 115                 data += " ";
 116                 data += itos(m_base_position.X);
 117                 data += " ";
 118                 data += itos(m_base_position.Y);
 119                 data += " ";
 120                 data += itos(m_base_position.Z);
 121
 122                 ActiveObjectMessage aom(getId(), false, data);
 123                 messages.push_back(aom);
 124         }
 125 }
 126
 127
 128 /*
 129         ItemSAO
 130 */
 131
 132 // Prototype
 133 ItemSAO proto_ItemSAO(NULL, 0, v3f(0,0,0), "");
 134
 135 ItemSAO::ItemSAO(ServerEnvironment *env, u16 id, v3f pos,
 136                 const std::string inventorystring):
 137         ServerActiveObject(env, id, pos),
 138         m_inventorystring(inventorystring)
 139 {
 140         dstream<<"Server: ItemSAO created with inventorystring=\""
 141                         <<m_inventorystring<<"\""<<std::endl;
 142         ServerActiveObject::registerType(getType(), create);
 143 }
 144
 145 ServerActiveObject* ItemSAO::create(ServerEnvironment *env, u16 id, v3f pos,
 146                 const std::string &data)
 147 {
 148         std::istringstream is(data, std::ios::binary);
 149         char buf[1];
 150         is.read(buf, 1); // read version
 151         std::string inventorystring = deSerializeString(is);
 152         dstream<<"ItemSAO::create(): Creating item \""
 153                         <<inventorystring<<"\""<<std::endl;
 154         return new ItemSAO(env, id, pos, inventorystring);
 155 }
 156
 157 void ItemSAO::step(float dtime, Queue<ActiveObjectMessage> &messages)
 158 {
 159 }
 160
 161 std::string ItemSAO::getClientInitializationData()
 162 {
 163         dstream<<__FUNCTION_NAME<<std::endl;
 164         std::string data;
 165         data += itos(m_base_position.X);
 166         data += ",";
 167         data += itos(m_base_position.Y);
 168         data += ",";
 169         data += itos(m_base_position.Z);
 170         data += ":";
 171         data += m_inventorystring;
 172         return data;
 173 }
 174
 175 std::string ItemSAO::getStaticData()
 176 {
 177         dstream<<__FUNCTION_NAME<<std::endl;
 178         std::ostringstream os(std::ios::binary);
 179         char buf[1];
 180         buf[0] = 0; //version
 181         os.write(buf, 1);
 182         os<<serializeString(m_inventorystring);
 183         return os.str();
 184 }
 185
 186 InventoryItem * ItemSAO::createInventoryItem()
 187 {
 188         try{
 189                 std::istringstream is(m_inventorystring, std::ios_base::binary);
 190                 InventoryItem *item = InventoryItem::deSerialize(is);
 191                 dstream<<__FUNCTION_NAME<<": m_inventorystring=\""
 192                                 <<m_inventorystring<<"\" -> item="<<item
 193                                 <<std::endl;
 194                 return item;
 195         }
 196         catch(SerializationError &e)
 197         {
 198                 dstream<<__FUNCTION_NAME<<": serialization error: "
 199                                 <<"m_inventorystring=\""<<m_inventorystring<<"\""<<std::endl;
 200                 return NULL;
 201         }
 202 }
 203
 204
 205