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source: code/branches/console/src/network/GameStateManager.h @ 1136

Last change on this file since 1136 was 1062, checked in by rgrieder, 17 years ago
  • changed header file inclusion order
File size: 2.5 KB
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1/*
2 *   ORXONOX - the hottest 3D action shooter ever to exist
3 *                    > www.orxonox.net <
4 *
5 *
6 *   License notice:
7 *
8 *   This program is free software; you can redistribute it and/or
9 *   modify it under the terms of the GNU General Public License
10 *   as published by the Free Software Foundation; either version 2
11 *   of the License, or (at your option) any later version.
12 *
13 *   This program is distributed in the hope that it will be useful,
14 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
15 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16 *   GNU General Public License for more details.
17 *
18 *   You should have received a copy of the GNU General Public License
19 *   along with this program; if not, write to the Free Software
20 *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
21 *
22 *   Author:
23 *      Oliver Scheuss, (C) 2007
24 *   Co-authors:
25 *      ...
26 *
27 */
28
29//
30// C++ Interface: GameStateManager
31//
32// Description:
33//
34//
35// Author:  Oliver Scheuss, (C) 2007
36//
37// Copyright: See COPYING file that comes with this distribution
38//
39//
40#ifndef _GameStateManager_H__
41#define _GameStateManager_H__
42
43#include "NetworkPrereqs.h"
44
45#include <map>
46
47#include "PacketTypes.h"
48
49namespace network
50{
51
52#define KEEP_GAMESTATES 20
53
54  /**
55  * This Class implements a manager for gamestates:
56  * - creating snapshots of gamestates
57  * - writing gamestates to universe
58  * - diffing gamestates ?
59  *
60  * EN/DECODATION:
61  * a: last Gamestate a client has received
62  * b: new Gamestate
63  * x: diffed and compressed gamestate
64  * x=(a^b)
65  * b=(a^x)
66  * diff(a,diff(a,x))=x (hope this is correct)
67  * @author Oliver Scheuss
68  */
69  class GameStateManager{
70  public:
71    GameStateManager(ClientInformation *head);
72    ~GameStateManager();
73    void update();
74    GameStateCompressed *popGameState(int clientID);
75    void ackGameState(int clientID, int gamestateID);
76    int id;
77  private:
78    GameState *getSnapshot(int id);
79    GameStateCompressed *encode(GameState *a, GameState *b);
80    GameStateCompressed *encode(GameState *a);
81    GameState *diff(GameState *a, GameState *b);
82    GameStateCompressed *compress_(GameState *a);
83    bool deleteUnusedGameState(int gamestateID);
84
85    std::map<int, GameState*> gameStateMap; //map gsID to gamestate*
86    std::map<int, int> gameStateUsed; // save the number of clients, that use the specific gamestate
87    GameState *reference;
88    ClientInformation *head_;
89  };
90
91}
92
93#endif /* _GameStateManager_H__ */
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