1 | /* |
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2 | * ORXONOX - the hottest 3D action shooter ever to exist |
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3 | * > www.orxonox.net < |
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4 | * |
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5 | * |
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6 | * License notice: |
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7 | * |
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8 | * This program is free software; you can redistribute it and/or |
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9 | * modify it under the terms of the GNU General Public License |
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10 | * as published by the Free Software Foundation; either version 2 |
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11 | * of the License, or (at your option) any later version. |
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12 | * |
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13 | * This program is distributed in the hope that it will be useful, |
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14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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16 | * GNU General Public License for more details. |
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17 | * |
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18 | * You should have received a copy of the GNU General Public License |
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19 | * along with this program; if not, write to the Free Software |
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20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
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21 | * |
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22 | * Author: |
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23 | * Fabian 'x3n' Landau |
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24 | * Co-authors: |
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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 | /** |
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30 | @file MetaObjectList.h |
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31 | @brief Definition of the MetaObjectList class. |
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32 | |
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33 | The MetaObjectList is a single-linked list, containing all list-elements and their |
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34 | lists wherein the object, owning the MetaObjectList, is registered. |
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35 | This allows much faster deletion of objects because no iteration is needed. |
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36 | */ |
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37 | |
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38 | #ifndef _MetaObjectList_H__ |
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39 | #define _MetaObjectList_H__ |
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40 | |
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41 | #include "CorePrereqs.h" |
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42 | |
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43 | #include "ObjectList.h" |
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44 | #include "Identifier.h" |
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45 | #include "Debug.h" |
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46 | |
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47 | namespace orxonox |
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48 | { |
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49 | //! Base-class of MetaObjectListElement, because those is a template |
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50 | class BaseMetaObjectListElement |
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51 | { |
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52 | public: |
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53 | /** @brief Default destructor */ |
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54 | virtual ~BaseMetaObjectListElement() {}; |
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55 | |
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56 | BaseMetaObjectListElement* next_; //!< The next Element in the list |
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57 | }; |
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58 | |
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59 | // ############################### |
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60 | // ### MetaObjectListElement ### |
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61 | // ############################### |
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62 | //! The list-element of the MetaObjectList |
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63 | template <class T> |
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64 | class MetaObjectListElement : public BaseMetaObjectListElement |
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65 | { |
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66 | public: |
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67 | MetaObjectListElement(ObjectList<T>* list, ObjectListElement<T>* element); |
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68 | virtual ~MetaObjectListElement(); |
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69 | |
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70 | ObjectListElement<T>* element_; //!< The list element, containing the object |
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71 | ObjectList<T>* list_; //!< The list, containing the element |
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72 | }; |
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73 | |
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74 | /** |
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75 | @brief Constructor: Creates the list-element with given list and element. |
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76 | */ |
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77 | template <class T> |
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78 | MetaObjectListElement<T>::MetaObjectListElement(ObjectList<T>* list, ObjectListElement<T>* element) |
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79 | { |
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80 | this->element_ = element; |
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81 | this->list_ = list; |
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82 | this->next_ = 0; |
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83 | } |
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84 | |
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85 | /** |
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86 | @brief Destructor: Removes the ObjectListElement from the ObjectList by linking next_ and prev_ of the ObjectListElement. |
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87 | */ |
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88 | template <class T> |
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89 | MetaObjectListElement<T>::~MetaObjectListElement() |
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90 | { |
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91 | COUT(5) << "*** MetaObjectList: Removing Object from " << ClassManager<T>::getIdentifier()->getName() << "-list." << std::endl; |
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92 | this->list_->notifyIterators(this->element_); |
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93 | |
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94 | if (this->element_->next_) |
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95 | this->element_->next_->prev_ = this->element_->prev_; |
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96 | else |
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97 | 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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98 | |
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99 | if (this->element_->prev_) |
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100 | this->element_->prev_->next_ = this->element_->next_; |
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101 | else |
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102 | 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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103 | |
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104 | delete this->element_; |
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105 | } |
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106 | |
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107 | |
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108 | // ############################### |
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109 | // ### MetaObjectList ### |
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110 | // ############################### |
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111 | //! The MetaObjectList contains ObjectListElements and their ObjectLists. |
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112 | /** |
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113 | The MetaObjectList is a single-linked list, containing all list-elements and their |
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114 | lists wherein the object that owns the MetaObjectList is registered. |
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115 | This allows much faster deletion of objects because no iteration is needed. |
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116 | */ |
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117 | class _CoreExport MetaObjectList |
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118 | { |
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119 | public: |
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120 | MetaObjectList(); |
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121 | ~MetaObjectList(); |
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122 | template <class T> |
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123 | void add(ObjectList<T>* list, ObjectListElement<T>* element); |
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124 | |
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125 | BaseMetaObjectListElement* first_; //!< The first element in the list |
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126 | }; |
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127 | |
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128 | /** |
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129 | @brief Adds an ObjectList and an element of that list to the MetaObjectList. |
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130 | @param list The ObjectList wherein the element is |
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131 | @param element The element wherein the object is |
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132 | */ |
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133 | template <class T> |
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134 | void MetaObjectList::add(ObjectList<T>* list, ObjectListElement<T>* element) |
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135 | { |
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136 | BaseMetaObjectListElement* temp = this->first_; |
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137 | this->first_ = new MetaObjectListElement<T>(list, element); |
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138 | this->first_->next_ = temp; |
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139 | } |
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140 | } |
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141 | |
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142 | #endif /* _MetaObjectList_H__ */ |
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