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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 <memory>
- #include "debug.h"
- #include "util/container.h"
- #include "irrlichttypes.h"
- #include "util/basic_macros.h"
- class TestClientActiveObjectMgr;
- class TestServerActiveObjectMgr;
- template <typename T>
- class ActiveObjectMgr
- {
- friend class ::TestClientActiveObjectMgr;
- friend class ::TestServerActiveObjectMgr;
- public:
- ActiveObjectMgr() = default;
- DISABLE_CLASS_COPY(ActiveObjectMgr);
- virtual ~ActiveObjectMgr()
- {
- SANITY_CHECK(m_active_objects.empty());
- // Note: Do not call clear() here. The derived class is already half
- // destructed.
- }
- virtual void step(float dtime, const std::function<void(T *)> &f) = 0;
- virtual bool registerObject(std::unique_ptr<T> obj) = 0;
- virtual void removeObject(u16 id) = 0;
- void clear()
- {
- // on_destruct could add new objects so this has to be a loop
- do {
- for (auto &it : m_active_objects.iter()) {
- if (!it.second)
- continue;
- m_active_objects.remove(it.first);
- }
- } while (!m_active_objects.empty());
- }
- T *getActiveObject(u16 id)
- {
- return m_active_objects.get(id).get();
- }
- 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.get(id);
- }
- // Note that this is ordered to fix #10985
- ModifySafeMap<u16, std::unique_ptr<T>> m_active_objects;
- };
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