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