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