staticobject.h

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/*
Minetest
Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
 
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
 
You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
 
#pragma once
 
#include "irrlichttypes_bloated.h"
#include <string>
#include <sstream>
#include <vector>
#include <map>
#include "debug.h"
 
class ServerActiveObject;
 
struct StaticObject
{
    u8 type = 0;
    v3f pos;
    std::string data;
 
    StaticObject() = default;
    StaticObject(const ServerActiveObject *s_obj, const v3f &pos_);
 
    void serialize(std::ostream &os) const;
    void deSerialize(std::istream &is, u8 version);
};
 
class StaticObjectList
{
public:
    /*
        Inserts an object to the container.
        Id must be unique (active) or 0 (stored).
    */
    void insert(u16 id, const StaticObject &obj)
    {
        if (id == 0) {
            m_stored.push_back(obj);
        } else {
            if (m_active.find(id) != m_active.end()) {
                dstream << "ERROR: StaticObjectList::insert(): "
                        << "id already exists" << std::endl;
                FATAL_ERROR("StaticObjectList::insert()");
            }
            setActive(id, obj);
        }
    }
 
    void remove(u16 id)
    {
        assert(id != 0); // Pre-condition
        if (m_active.find(id) == m_active.end()) {
            warningstream << "StaticObjectList::remove(): id=" << id << " not found"
                          << std::endl;
            return;
        }
        m_active.erase(id);
    }
 
    void serialize(std::ostream &os);
    void deSerialize(std::istream &is);
 
    // Never permit to modify outside of here. Only this object is responsible of m_stored and m_active modifications
    const std::vector<StaticObject>& getAllStored() const { return m_stored; }
    const std::map<u16, StaticObject> &getAllActives() const { return m_active; }
 
    inline void setActive(u16 id, const StaticObject &obj) { m_active[id] = obj; }
    inline size_t getActiveSize() const { return m_active.size(); }
    inline size_t getStoredSize() const { return m_stored.size(); }
    inline void clearStored() { m_stored.clear(); }
    void pushStored(const StaticObject &obj) { m_stored.push_back(obj); }
 
    bool storeActiveObject(u16 id);
 
    inline void clear()
    {
        m_active.clear();
        m_stored.clear();
    }
 
    inline size_t size()
    {
        return m_active.size() + m_stored.size();
    }
 
private:
    /*
        NOTE: When an object is transformed to active, it is removed
        from m_stored and inserted to m_active.
    */
    std::vector<StaticObject> m_stored;
    std::map<u16, StaticObject> m_active;
};