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107 lines
3.4 KiB
C++
107 lines
3.4 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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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 General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#ifndef ULTIMA_SHARED_CORE_MESSAGE_TARGET_H
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#define ULTIMA_SHARED_CORE_MESSAGE_TARGET_H
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#include "ultima/shared/core/base_object.h"
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namespace Ultima {
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namespace Shared {
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class MessageTarget;
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class CMessage;
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typedef bool (MessageTarget:: *PMSG)(CMessage *msg);
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struct MSGMAP_ENTRY {
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PMSG _fn;
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ClassDefFn _classDef;
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};
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struct MSGMAP {
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const MSGMAP *(*pFnGetBaseMap)();
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const MSGMAP_ENTRY *lpEntries;
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};
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#define DECLARE_MESSAGE_MAP \
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protected: \
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static const Ultima::Shared::MSGMAP *getThisMessageMap(); \
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const Ultima::Shared::MSGMAP *getMessageMap() const override
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#define DECLARE_MESSAGE_MAP_BASE \
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protected: \
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static const Ultima::Shared::MSGMAP *getThisMessageMap(); \
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virtual const Ultima::Shared::MSGMAP *getMessageMap() const
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#define BEGIN_MESSAGE_MAP(theClass, baseClass) \
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Ultima::Shared::ClassDef theClass::type() { return Ultima::Shared::ClassDef(#theClass, &baseClass::type); } \
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const Ultima::Shared::MSGMAP *theClass::getMessageMap() const \
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{ return getThisMessageMap(); } \
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const Ultima::Shared::MSGMAP *theClass::getThisMessageMap() \
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{ \
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typedef theClass ThisClass; \
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typedef baseClass TheBaseClass; \
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typedef bool (theClass::*FNPTR)(Ultima::Shared::CMessage *msg); \
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static const Ultima::Shared::MSGMAP_ENTRY _messageEntries[] = {
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#define ON_MESSAGE(msgClass) \
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{ static_cast<Ultima::Shared::PMSG>((FNPTR)&ThisClass::msgClass), &C##msgClass::type },
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#define END_MESSAGE_MAP() \
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{ (Ultima::Shared::PMSG)nullptr, nullptr } \
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}; \
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static const Ultima::Shared::MSGMAP messageMap = \
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{ &TheBaseClass::getThisMessageMap, &_messageEntries[0] }; \
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return &messageMap; \
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}
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#define EMPTY_MESSAGE_MAP(theClass, baseClass) \
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Ultima::Shared::ClassDef theClass::type() { return Ultima::Shared::ClassDef(#theClass, &baseClass::type); } \
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const Ultima::Shared::MSGMAP *theClass::getMessageMap() const \
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{ return getThisMessageMap(); } \
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const Ultima::Shared::MSGMAP *theClass::getThisMessageMap() \
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{ \
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typedef baseClass TheBaseClass; \
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static const Ultima::Shared::MSGMAP_ENTRY _messageEntries[] = { \
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{ (Ultima::Shared::PMSG)nullptr, nullptr } \
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}; \
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static const Ultima::Shared::MSGMAP messageMap = \
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{ &TheBaseClass::getThisMessageMap, &_messageEntries[0] }; \
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return &messageMap; \
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} \
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enum { DUMMY##theClass }
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/**
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* The immediate descendant of the base object, this implements the base class for objects
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* that can receive messages
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*/
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class MessageTarget: public BaseObject {
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DECLARE_MESSAGE_MAP_BASE;
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public:
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CLASSDEF;
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};
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} // End of namespace Shared
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} // End of namespace Ultima
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#endif
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