[859] | 1 | /* |
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| 2 | * ORXONOX - the hottest 3D action shooter ever to exist |
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| 3 | * |
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| 4 | * |
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| 5 | * License notice: |
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| 6 | * |
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| 7 | * This program is free software; you can redistribute it and/or |
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| 8 | * modify it under the terms of the GNU General Public License |
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| 9 | * as published by the Free Software Foundation; either version 2 |
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| 10 | * of the License, or (at your option) any later version. |
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| 11 | * |
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| 12 | * This program is distributed in the hope that it will be useful, |
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 15 | * GNU General Public License for more details. |
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| 16 | * |
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| 17 | * You should have received a copy of the GNU General Public License |
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| 18 | * along with this program; if not, write to the Free Software |
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| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
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| 20 | * |
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| 21 | * Author: |
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| 22 | * Fabian 'x3n' Landau |
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| 23 | * Co-authors: |
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| 24 | * ... |
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| 25 | * |
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| 26 | */ |
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| 27 | |
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| 28 | /*! |
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| 29 | @file MetaObjectList.h |
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| 30 | @brief Definition of the MetaObjectList class. |
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| 31 | |
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| 32 | The MetaObjectList is a single-linked list, containing all list-elements and their |
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| 33 | lists wherein the object, owning the MetaObjectList, is registered. |
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| 34 | This allows much faster deletion of objects because no iteration is needed. |
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| 35 | */ |
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| 36 | |
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| 37 | #ifndef _MetaObjectList_H__ |
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| 38 | #define _MetaObjectList_H__ |
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| 39 | |
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| 40 | #include "CorePrereqs.h" |
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| 41 | |
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| 42 | #include "ObjectList.h" |
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| 43 | #include "Identifier.h" |
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| 44 | #include "Debug.h" |
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| 45 | |
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| 46 | namespace orxonox |
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| 47 | { |
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| 48 | //! Base-class of MetaObjectListElement, because those is a template |
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| 49 | class BaseMetaObjectListElement |
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| 50 | { |
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| 51 | public: |
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| 52 | /** @brief Default destructor */ |
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| 53 | virtual ~BaseMetaObjectListElement() {}; |
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| 54 | |
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| 55 | BaseMetaObjectListElement* next_; //!< The next Element in the list |
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| 56 | }; |
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| 57 | |
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| 58 | // ############################### |
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| 59 | // ### MetaObjectListElement ### |
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| 60 | // ############################### |
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| 61 | //! The list-element of the MetaObjectList |
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| 62 | template <class T> |
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| 63 | class MetaObjectListElement : public BaseMetaObjectListElement |
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| 64 | { |
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| 65 | public: |
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| 66 | MetaObjectListElement(ObjectList<T>* list, ObjectListElement<T>* element); |
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| 67 | virtual ~MetaObjectListElement(); |
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| 68 | |
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| 69 | ObjectListElement<T>* element_; //!< The list element, containing the object |
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| 70 | ObjectList<T>* list_; //!< The list, containing the element |
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| 71 | }; |
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| 72 | |
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| 73 | /** |
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| 74 | @brief Constructor: Creates the list-element with given list and element. |
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| 75 | */ |
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| 76 | template <class T> |
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| 77 | MetaObjectListElement<T>::MetaObjectListElement(ObjectList<T>* list, ObjectListElement<T>* element) |
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| 78 | { |
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| 79 | this->element_ = element; |
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| 80 | this->list_ = list; |
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| 81 | this->next_ = 0; |
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| 82 | } |
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| 83 | |
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| 84 | /** |
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| 85 | @brief Destructor: Removes the ObjectListElement from the ObjectList by linking next_ and prev_ of the ObjectListElement. |
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| 86 | */ |
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| 87 | template <class T> |
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| 88 | MetaObjectListElement<T>::~MetaObjectListElement() |
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| 89 | { |
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| 90 | if (this->element_->next_) |
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| 91 | this->element_->next_->prev_ = this->element_->prev_; |
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| 92 | else |
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| 93 | this->list_->last_ = this->element_->prev_; // If there is no next_, we deleted the last object and have to update the last_ pointer of the list |
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| 94 | |
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| 95 | if (this->element_->prev_) |
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| 96 | this->element_->prev_->next_ = this->element_->next_; |
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| 97 | else |
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| 98 | this->list_->first_ = this->element_->next_; // If there is no prev_, we deleted the first object and have to update the first_ pointer of the list |
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| 99 | |
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| 100 | |
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| 101 | COUT(4) << "*** Removing Object from " << ClassIdentifier<T>::getIdentifier()->getName() << "-list." << std::endl; |
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| 102 | delete this->element_; |
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| 103 | } |
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| 104 | |
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| 105 | |
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| 106 | // ############################### |
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| 107 | // ### ObjectList ### |
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| 108 | // ############################### |
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| 109 | //! The MetaObjectList contains ObjectListElements and their ObjectLists. |
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| 110 | /** |
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| 111 | The MetaObjectList is a single-linked list, containing all list-elements and their |
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| 112 | lists wherein the object that owns the MetaObjectList is registered. |
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| 113 | This allows much faster deletion of objects because no iteration is needed. |
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| 114 | */ |
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| 115 | class MetaObjectList |
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| 116 | { |
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| 117 | public: |
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| 118 | MetaObjectList(); |
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| 119 | ~MetaObjectList(); |
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| 120 | template <class T> |
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| 121 | void add(ObjectList<T>* list, ObjectListElement<T>* element); |
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| 122 | |
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| 123 | BaseMetaObjectListElement* first_; //!< The first element in the list |
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| 124 | }; |
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| 125 | |
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| 126 | /** |
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| 127 | @brief Adds an ObjectList and an element of that list to the MetaObjectList. |
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| 128 | @param list The ObjectList wherein the element is |
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| 129 | @param element The element wherein the object is |
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| 130 | */ |
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| 131 | template <class T> |
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| 132 | void MetaObjectList::add(ObjectList<T>* list, ObjectListElement<T>* element) |
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| 133 | { |
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| 134 | BaseMetaObjectListElement* temp = this->first_; |
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| 135 | this->first_ = new MetaObjectListElement<T>(list, element); |
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| 136 | this->first_->next_ = temp; |
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| 137 | } |
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| 138 | } |
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| 139 | |
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| 140 | #endif /* _MetaObjectList_H__ */ |
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