sys_class_registry.h

/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

/*
 * This file is based on WME Lite.
 * http://dead-code.org/redir.php?target=wmelite
 * Copyright (c) 2011 Jan Nedoma
 */

#ifndef WINTERMUTE_SYSCLASSREGISTRY_H
#define WINTERMUTE_SYSCLASSREGISTRY_H

#include "engines/wintermute/wintypes.h"
#include "engines/wintermute/dctypes.h"
#include "engines/wintermute/system/sys_class.h"
#include "common/hashmap.h"
#include "common/hash-str.h"
#include "common/func.h"
#include "common/stream.h"

namespace Wintermute {
class SystemClass;
}

namespace Common {
template<typename T> struct Hash;
template<> struct Hash<Wintermute::SystemClass *> : public UnaryFunction<Wintermute::SystemClass *, uint> {
    uint operator()(Wintermute::SystemClass *val) const {
        return (uint)((size_t)val);
    }
};

}

namespace Wintermute {

class BaseGame;
class BasePersistenceManager;
class SystemInstance;

class SystemClassRegistry {
    void unregisterClasses();
public:
    void registerClasses(); // persistent.cpp
#ifdef ENABLE_WME3D
    void register3DClasses(); // persistent.cpp
#endif
    static SystemClassRegistry *getInstance();

    SystemClassRegistry();
    virtual ~SystemClassRegistry();

    bool enumInstances(SYS_INSTANCE_CALLBACK lpCallback, const char *className, void *lpData);
    bool loadTable(BaseGame *Game, BasePersistenceManager *PersistMgr);
    bool saveTable(BaseGame *Game, BasePersistenceManager *PersistMgr, bool quickSave);
    bool loadInstances(BaseGame *Game, BasePersistenceManager *PersistMgr);
    bool saveInstances(BaseGame *Game, BasePersistenceManager *PersistMgr, bool quickSave);
    void *idToPointer(int classID, int instanceID);
    bool getPointerID(void *pointer, int *classID, int *instanceID);
    bool registerClass(SystemClass *classObj);
    bool unregisterClass(SystemClass *classObj);
    bool registerInstance(const char *className, void *instance);
    bool unregisterInstance(const char *className, void *instance);
    void dumpClasses(Common::WriteStream *stream);
    int getNextID();
    void addInstanceToTable(SystemInstance *instance, void *pointer);

    bool _disabled;
    int _count;

    typedef Common::HashMap<SystemClass *, SystemClass *> Classes;
    Classes _classes;

    typedef Common::HashMap<AnsiString, SystemClass *> NameMap;
    NameMap _nameMap;

    typedef Common::HashMap<int, SystemClass *> IdMap;
    IdMap _idMap;

    typedef Common::HashMap<void *, SystemInstance *> InstanceMap;
    InstanceMap _instanceMap;

    typedef Common::HashMap<int, SystemInstance *> SavedInstanceMap;
    SavedInstanceMap _savedInstanceMap;

};

} // End of namespace Wintermute

#endif