src/inventorymanager.h

   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 #ifndef INVENTORYMANAGER_HEADER
  21 #define INVENTORYMANAGER_HEADER
  22
  23 #include "inventory.h"
  24 #include <iostream>
  25 #include <string>
  26 class ServerActiveObject;
  27
  28 struct InventoryLocation
  29 {
  30         enum Type{
  31                 UNDEFINED,
  32                 CURRENT_PLAYER,
  33                 PLAYER,
  34                 NODEMETA,
  35         } type;
  36
  37         std::string name; // PLAYER
  38         v3s16 p; // NODEMETA
  39
  40         InventoryLocation()
  41         {
  42                 setUndefined();
  43         }
  44         void setUndefined()
  45         {
  46                 type = UNDEFINED;
  47         }
  48         void setCurrentPlayer()
  49         {
  50                 type = CURRENT_PLAYER;
  51         }
  52         void setPlayer(const std::string &name_)
  53         {
  54                 type = PLAYER;
  55                 name = name_;
  56         }
  57         void setNodeMeta(v3s16 p_)
  58         {
  59                 type = NODEMETA;
  60                 p = p_;
  61         }
  62
  63         void applyCurrentPlayer(const std::string &name_)
  64         {
  65                 if(type == CURRENT_PLAYER)
  66                         setPlayer(name_);
  67         }
  68
  69         std::string dump() const;
  70         void serialize(std::ostream &os) const;
  71         void deSerialize(std::istream &is);
  72         void deSerialize(std::string s);
  73 };
  74
  75 struct InventoryAction;
  76
  77 class InventoryManager
  78 {
  79 public:
  80         InventoryManager(){}
  81         virtual ~InventoryManager(){}
  82
  83         // Get an inventory or set it modified (so it will be updated over
  84         // network or so)
  85         virtual Inventory* getInventory(const InventoryLocation &loc){return NULL;}
  86         virtual std::string getInventoryOwner(const InventoryLocation &loc){return "";}
  87         virtual void setInventoryModified(const InventoryLocation &loc){}
  88
  89         // Used on the client to send an action to the server
  90         virtual void inventoryAction(InventoryAction *a){}
  91 };
  92
  93 #define IACTION_MOVE 0
  94 #define IACTION_DROP 1
  95
  96 struct InventoryAction
  97 {
  98         static InventoryAction * deSerialize(std::istream &is);
  99
 100         virtual u16 getType() const = 0;
 101         virtual void serialize(std::ostream &os) const = 0;
 102         virtual void apply(InventoryManager *mgr, ServerActiveObject *player) = 0;
 103 };
 104
 105 struct IMoveAction : public InventoryAction
 106 {
 107         // count=0 means "everything"
 108         u16 count;
 109         InventoryLocation from_inv;
 110         std::string from_list;
 111         s16 from_i;
 112         InventoryLocation to_inv;
 113         std::string to_list;
 114         s16 to_i;
 115
 116         IMoveAction()
 117         {
 118                 count = 0;
 119                 from_i = -1;
 120                 to_i = -1;
 121         }
 122
 123         IMoveAction(std::istream &is);
 124
 125         u16 getType() const
 126         {
 127                 return IACTION_MOVE;
 128         }
 129
 130         void serialize(std::ostream &os) const
 131         {
 132                 os<<"Move ";
 133                 os<<count<<" ";
 134                 os<<from_inv.dump()<<" ";
 135                 os<<from_list<<" ";
 136                 os<<from_i<<" ";
 137                 os<<to_inv.dump()<<" ";
 138                 os<<to_list<<" ";
 139                 os<<to_i;
 140         }
 141
 142         void apply(InventoryManager *mgr, ServerActiveObject *player);
 143 };
 144
 145 struct IDropAction : public InventoryAction
 146 {
 147         // count=0 means "everything"
 148         u16 count;
 149         InventoryLocation from_inv;
 150         std::string from_list;
 151         s16 from_i;
 152
 153         IDropAction()
 154         {
 155                 count = 0;
 156                 from_i = -1;
 157         }
 158
 159         IDropAction(std::istream &is);
 160
 161         u16 getType() const
 162         {
 163                 return IACTION_DROP;
 164         }
 165
 166         void serialize(std::ostream &os) const
 167         {
 168                 os<<"Drop ";
 169                 os<<count<<" ";
 170                 os<<from_inv.dump()<<" ";
 171                 os<<from_list<<" ";
 172                 os<<from_i;
 173         }
 174
 175         void apply(InventoryManager *mgr, ServerActiveObject *player);
 176 };
 177
 178 #endif
 179