87 lines
2.2 KiB
C++
87 lines
2.2 KiB
C++
/*
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Minetest
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Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
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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 "mtevent.h"
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#include <list>
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#include <map>
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class EventManager : public MtEventManager
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{
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static void receiverReceive(MtEvent *e, void *data)
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{
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MtEventReceiver *r = (MtEventReceiver *)data;
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r->onEvent(e);
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}
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struct FuncSpec
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{
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event_receive_func f;
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void *d;
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FuncSpec(event_receive_func f, void *d) : f(f), d(d) {}
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};
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struct Dest
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{
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std::list<FuncSpec> funcs{};
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};
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std::map<MtEvent::Type, Dest> m_dest{};
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public:
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~EventManager() override = default;
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void put(MtEvent *e) override
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{
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std::map<MtEvent::Type, Dest>::iterator i = m_dest.find(e->getType());
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if (i != m_dest.end()) {
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std::list<FuncSpec> &funcs = i->second.funcs;
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for (FuncSpec &func : funcs) {
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(*(func.f))(e, func.d);
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}
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}
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delete e;
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}
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void reg(MtEvent::Type type, event_receive_func f, void *data) override
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{
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std::map<MtEvent::Type, Dest>::iterator i = m_dest.find(type);
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if (i != m_dest.end()) {
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i->second.funcs.emplace_back(f, data);
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} else {
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Dest dest;
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dest.funcs.emplace_back(f, data);
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m_dest[type] = dest;
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}
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}
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void dereg(MtEvent::Type type, event_receive_func f, void *data) override
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{
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std::map<MtEvent::Type, Dest>::iterator i = m_dest.find(type);
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if (i != m_dest.end()) {
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std::list<FuncSpec> &funcs = i->second.funcs;
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auto j = funcs.begin();
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while (j != funcs.end()) {
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bool remove = (j->f == f && (!data || j->d == data));
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if (remove)
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funcs.erase(j++);
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else
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++j;
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}
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}
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}
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};
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