object_manager.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/>.
 *
 */

#ifndef ULTIMA8_KERNEL_OBJECTMANAGER_H
#define ULTIMA8_KERNEL_OBJECTMANAGER_H

#include "common/hash-str.h"
#include "common/hashmap.h"
#include "ultima/ultima8/misc/common_types.h"

namespace Common {
class ReadStream;
}

namespace Ultima {
namespace Ultima8 {

class idMan;
class Object;
class Actor;

typedef Object *(*ObjectLoadFunc)(Common::ReadStream *rs, uint32);

class ObjectManager {
public:
    ObjectManager();
    ~ObjectManager();

    static ObjectManager *get_instance() {
        return _objectManager;
    }

    void reset();

    uint16 assignObjId(Object *obj, ObjId id = 0xFFFF);
    uint16 assignActorObjId(Actor *obj, ObjId id = 0xFFFF);
    bool reserveObjId(ObjId objid);
    void clearObjId(ObjId objid);
    Object *getObject(ObjId objid) const;

    void allow64kObjects();


    void objectStats();
    void objectTypes();

    void save(Common::WriteStream *ws);
    bool load(Common::ReadStream *rs, uint32 version);

    void saveObject(Common::WriteStream *ws, Object *obj) const;
    Object *loadObject(Common::ReadStream *rs, uint32 version);

    Common::Array<Object *> _objects;
    idMan *_objIDs;
    idMan *_actorIDs;

private:
    Object *loadObject(Common::ReadStream *rs, Common::String classname, uint32 version);

    void setupLoaders();

    void addObjectLoader(Common::String classname, ObjectLoadFunc func) {
        _objectLoaders[classname] = func;
    }
    Common::HashMap<Common::String, ObjectLoadFunc> _objectLoaders;

    static ObjectManager *_objectManager;
};

} // End of namespace Ultima8
} // End of namespace Ultima

#endif