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- /*
- Minetest
- Copyright (C) 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 "event.h"
- #include <list>
- #include <map>
- class EventManager : public MtEventManager
- {
- static void receiverReceive(MtEvent *e, void *data)
- {
- MtEventReceiver *r = (MtEventReceiver *)data;
- r->onEvent(e);
- }
- struct FuncSpec
- {
- event_receive_func f;
- void *d;
- FuncSpec(event_receive_func f, void *d) : f(f), d(d) {}
- };
- struct Dest
- {
- std::list<FuncSpec> funcs{};
- };
- std::map<MtEvent::Type, Dest> m_dest{};
- public:
- ~EventManager() override = default;
- void put(MtEvent *e) override
- {
- std::map<MtEvent::Type, Dest>::iterator i = m_dest.find(e->getType());
- if (i != m_dest.end()) {
- std::list<FuncSpec> &funcs = i->second.funcs;
- for (FuncSpec &func : funcs) {
- (*(func.f))(e, func.d);
- }
- }
- delete e;
- }
- void reg(MtEvent::Type type, event_receive_func f, void *data) override
- {
- std::map<MtEvent::Type, Dest>::iterator i = m_dest.find(type);
- if (i != m_dest.end()) {
- i->second.funcs.emplace_back(f, data);
- } else {
- Dest dest;
- dest.funcs.emplace_back(f, data);
- m_dest[type] = dest;
- }
- }
- void dereg(MtEvent::Type type, event_receive_func f, void *data) override
- {
- std::map<MtEvent::Type, Dest>::iterator i = m_dest.find(type);
- if (i != m_dest.end()) {
- std::list<FuncSpec> &funcs = i->second.funcs;
- auto j = funcs.begin();
- while (j != funcs.end()) {
- bool remove = (j->f == f && (!data || j->d == data));
- if (remove)
- funcs.erase(j++);
- else
- ++j;
- }
- }
- }
- };
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