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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_BASE_OBJECT_H
#define ULTIMA_SHARED_CORE_BASE_OBJECT_H
#include "common/scummsys.h"
#include "common/array.h"
#include "common/hash-str.h"
#include "common/list.h"
#include "ultima/shared/core/file.h"
namespace Ultima {
namespace Shared {
class BaseObject;
class ClassDef;
typedef ClassDef(*ClassDefFn)();
/**
* Encapsulation of a class definition. Used as part of the message dispatch system
* to identify classes that implement particular messages
*/
class ClassDef {
private:
ClassDefFn _parentFn;
public:
const char *_className;
public:
ClassDef(const char *className, const ClassDefFn parentFn) :
_className(className), _parentFn(parentFn) {
}
bool hasParent() const {
return _parentFn != nullptr;
}
ClassDef parent() const {
return (*_parentFn)();
}
bool operator==(const ClassDef &right) const {
return !strcmp(_className, right._className);
}
};
#define CLASSDEF \
static ::Ultima::Shared::ClassDef type(); \
::Ultima::Shared::ClassDef getType() const override { return type(); }
/**
* Defines the most basic root of the engine's object hierarchy.
*/
class BaseObject {
public:
static ::Ultima::Shared::ClassDef type();
virtual ::Ultima::Shared::ClassDef getType() const { return type(); }
virtual ~BaseObject() {
}
/**
* Returns true if a given object is of the type defined by the class definition,
* or one of it's descendants
*/
bool isInstanceOf(const ClassDef &classDef) const;
};
} // End of namespace Shared
} // End of namespace Ultima
#endif
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