mirror of https://github.com/minetest/minetest.git
91 lines
2.3 KiB
C++
91 lines
2.3 KiB
C++
/*
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Minetest
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Copyright (C) 2010-2018 nerzhul, Loic BLOT <loic.blot@unix-experience.fr>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#pragma once
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#include <memory>
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#include "debug.h"
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#include "util/container.h"
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#include "irrlichttypes.h"
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#include "util/basic_macros.h"
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class TestClientActiveObjectMgr;
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class TestServerActiveObjectMgr;
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template <typename T>
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class ActiveObjectMgr
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{
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friend class ::TestClientActiveObjectMgr;
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friend class ::TestServerActiveObjectMgr;
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public:
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ActiveObjectMgr() = default;
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DISABLE_CLASS_COPY(ActiveObjectMgr);
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virtual ~ActiveObjectMgr()
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{
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SANITY_CHECK(m_active_objects.empty());
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// Note: Do not call clear() here. The derived class is already half
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// destructed.
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}
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virtual void step(float dtime, const std::function<void(T *)> &f) = 0;
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virtual bool registerObject(std::unique_ptr<T> obj) = 0;
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virtual void removeObject(u16 id) = 0;
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void clear()
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{
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// on_destruct could add new objects so this has to be a loop
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do {
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for (auto &it : m_active_objects.iter()) {
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if (!it.second)
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continue;
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m_active_objects.remove(it.first);
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}
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} while (!m_active_objects.empty());
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}
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T *getActiveObject(u16 id)
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{
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return m_active_objects.get(id).get();
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}
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protected:
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u16 getFreeId() const
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{
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// try to reuse id's as late as possible
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static thread_local u16 last_used_id = 0;
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u16 startid = last_used_id;
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while (!isFreeId(++last_used_id)) {
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if (last_used_id == startid)
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return 0;
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}
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return last_used_id;
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}
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bool isFreeId(u16 id) const
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{
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return id != 0 && !m_active_objects.get(id);
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}
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// Note that this is ordered to fix #10985
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ModifySafeMap<u16, std::unique_ptr<T>> m_active_objects;
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};
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