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/*
Minetest
Copyright (C) 2010-2018 nerzhul, Loic BLOT <loic.blot@unix-experience.fr>
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 <unordered_map>
#include "irrlichttypes.h"
class TestClientActiveObjectMgr;
class TestServerActiveObjectMgr;
template <typename T>
class ActiveObjectMgr
{
friend class ::TestClientActiveObjectMgr;
friend class ::TestServerActiveObjectMgr;
public:
virtual void step(float dtime, const std::function<void(T *)> &f) = 0;
virtual bool registerObject(T *obj) = 0;
virtual void removeObject(u16 id) = 0;
T *getActiveObject(u16 id)
{
typename std::unordered_map<u16, T *>::const_iterator n =
m_active_objects.find(id);
return (n != m_active_objects.end() ? n->second : nullptr);
}
protected:
u16 getFreeId() const
{
// try to reuse id's as late as possible
static thread_local u16 last_used_id = 0;
u16 startid = last_used_id;
while (!isFreeId(++last_used_id)) {
if (last_used_id == startid)
return 0;
}
return last_used_id;
}
bool isFreeId(u16 id) const
{
return id != 0 && m_active_objects.find(id) == m_active_objects.end();
}
std::unordered_map<u16, T *> m_active_objects;
};