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annotate engine/core/pathfinder/searchspace.h @ 338:d266506ff4f9

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Bug fix. It turned out the instance tree contained ghost instances, since InstanceTree.removeInstance sometimes failed. This caused those random crashes in UH. Now the InstanceTree enforces that remove/add Instance work in pairs. A new Exception is raised in case this ever goes wrong again. (InconsitencyDetected) Furthermore the removeInstancheChangeListener stuff had a fix to become reentrant. It is not clear wether this was shadowed by the aforementioned bug or was never triggered.
author phoku@33b003aa-7bff-0310-803a-e67f0ece8222
date Mon, 24 Aug 2009 18:32:03 +0000
parents 90005975cdbb
children
rev   line source
0
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1 /***************************************************************************
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2 * Copyright (C) 2005-2008 by the FIFE team *
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3 * http://www.fifengine.de *
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4 * This file is part of FIFE. *
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5 * *
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90005975cdbb * Final LGPL switch step by adjusting the file headers
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6 * FIFE is free software; you can redistribute it and/or *
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7 * modify it under the terms of the GNU Lesser General Public *
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8 * License as published by the Free Software Foundation; either *
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9 * version 2.1 of the License, or (at your option) any later version. *
0
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10 * *
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11 * This library is distributed in the hope that it will be useful, *
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12 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
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14 * Lesser General Public License for more details. *
0
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15 * *
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16 * You should have received a copy of the GNU Lesser General Public *
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17 * License along with this library; if not, write to the *
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18 * Free Software Foundation, Inc., *
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19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *
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20 ***************************************************************************/
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21
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22 #ifndef FIFE_PATHFINDER_SEARCHSPACE
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23 #define FIFE_PATHFINDER_SEARCHSPACE
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24
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25 // Standard C++ library includes
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26
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27 // 3rd party library includes
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28
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29 // FIFE includes
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30 // These includes are split up in two parts, separated by one empty line
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31 // First block: files included from the FIFE root src directory
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32 // Second block: files included from the same folder
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33 #include "model/structures/location.h"
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34
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35 namespace FIFE {
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36
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37 class Layer;
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38
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39 class SearchSpace {
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40 public:
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41 SearchSpace(Layer* layer);
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42
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43 int getUpperX() const {
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44 return m_upperX;
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45 }
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46
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47 int getUpperY() const {
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48 return m_upperY;
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49 }
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50
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51 int getLowerX() const {
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52 return m_lowerX;
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53 }
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54
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55 int getLowerY() const {
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56 return m_lowerY;
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57 }
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58
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59 int getWidth() const {
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60 //1 is added to make it inclusive of the first cell.
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61 return (m_upperX - m_lowerX) + 1;
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62 }
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63
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64 int getHeight() const {
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65 return (m_upperY - m_lowerY) + 1;
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66 }
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67
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68 Layer* getLayer() const {
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69 return m_layer;
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70 }
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71
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72 /** Determines whether the given location is within the searchspace.
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73 *
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74 * Tests the equality of the layers and then tests to see whether the coordinates
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75 * lie within the search space.
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76 *
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77 * @param location The location to test.
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78 * @return True if it is in the search space, false otherwise.
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79 */
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80 bool isInSearchSpace(const Location& location) const;
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81
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82 /** Translates coordinates into the search space.
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83 *
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84 * given a coordinate this function returns that coordinate in relation to the
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85 * search space origin.
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86 *
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87 * @param coords The coordinate to translate.
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88 * @return The translated coordinate.
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89 */
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90 ModelCoordinate translateCoordsToSearchSpace(const ModelCoordinate& coords) const;
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91
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92 /** Converts a coordinate into a unique integer id.
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93 *
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94 * Takes a model coordinate and based on the coordinate returns a unique identifier.
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95 *
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96 * @param coord The model coord to get the integer of.
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97 * @return The unique identifier.
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98 */
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99 int convertCoordToInt(const ModelCoordinate& coord) const;
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100
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101 /** Converts an integer to a ModelCoordinate.
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102 *
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103 * Converts an integer that represents a cell in the search space into the
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104 * actual ModelCoordinate representing it's physical location.
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105 *
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106 * @param cell An integer of the cell to get the coordinate of.
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107 * @return The model coordinate in question.
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108 */
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109 ModelCoordinate convertIntToCoord(const int cell) const;
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110
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111 /** Returns the maximum index on the layer.
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112 * Returns the maximum indexible coordinate on the search space.
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113 * @return The maximum indexible coordinate.
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114 */
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115 int getMaxIndex() const;
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116 private:
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117 //The boundries of the search space.
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118 int m_upperX;
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119 int m_upperY;
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120 int m_lowerX;
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121 int m_lowerY;
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122
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123 //The layer of the search space.
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124 Layer* m_layer;
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125 };
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126
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127 }
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128
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129
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130 #endif