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annotate engine/core/model/structures/location.h @ 0:4a0efb7baf70

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* Datasets becomes the new trunk and retires after that :-)
author mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
date Sun, 29 Jun 2008 18:44:17 +0000
parents
children 90005975cdbb
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0
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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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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6 * FIFE is free software; you can redistribute it and/or modify *
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7 * it under the terms of the GNU General Public License as published by *
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8 * the Free Software Foundation; either version 2 of the License, or *
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9 * (at your option) any later version. *
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10 * *
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11 * This program 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 *
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14 * GNU General Public License for more details. *
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15 * *
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16 * You should have received a copy of the GNU General Public License *
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17 * along with this program; if not, write to the *
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18 * Free Software Foundation, Inc., *
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19 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA *
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20 ***************************************************************************/
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21
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22 #ifndef FIFE_LOCATION_H
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23 #define FIFE_LOCATION_H
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24
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25 // Standard C++ library includes
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26 #include <iostream>
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27
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28 // 3rd party library includes
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29
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30 // FIFE includes
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31 // These includes are split up in two parts, separated by one empty line
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32 // First block: files included from the FIFE root src directory
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33 // Second block: files included from the same folder
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34 #include "model/metamodel/modelcoords.h"
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35 #include "util/base/exception.h"
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36
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37 namespace FIFE {
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38 class Map;
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39 class Layer;
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40
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41 class Location {
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42 public:
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43 /** Default constructor
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44 */
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45 Location();
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46
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47 /** Copy constructor
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48 */
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49 Location(const Location& loc);
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50
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51 /** Utility constructor
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52 */
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53 Location(Layer* layer);
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54
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55 /** Destructor
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56 */
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57 ~Location();
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58
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59 /** Resets location (so that layer and coordinate information becomes invalid)
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60 */
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61 void reset();
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62
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63 /** Assignment operator
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64 */
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65 Location& operator=(const Location& rhs);
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66
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67 /** Compares equality of two locations
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68 */
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69 inline bool operator==(const Location& loc) const {
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70 return ((m_layer == loc.m_layer) && (m_exact_layer_coords == loc.m_exact_layer_coords));
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71 }
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72
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73 /** Compares unequality of two locations
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74 */
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75 inline bool operator!=(const Location& loc) const {
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76 return !(*this == loc);
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77 }
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78
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79 /** Gets the map where this location is pointing to
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80 * @note this information is fetched from the set layer
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81 * @return map where this location is pointing to, NULL in case its invalid
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82 */
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83 Map* getMap() const;
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84
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85 /** Sets layer where this location is pointing to
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86 * @param layer layer to set
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87 */
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88 void setLayer(Layer* layer);
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89
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90 /** Gets the layer where this location is pointing to
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91 * @return layer where this location is pointing to, NULL in case its invalid
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92 */
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93 Layer* getLayer() const;
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94
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95 /** Sets precise layer coordinates to this location
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96 * @throws NotSet in the following cases:
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97 * - layer is not set (NULL)
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98 * - layer does not have cellgrid assigned
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99 * @param coordinates coordinates to set
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100 */
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101 void setExactLayerCoordinates(const ExactModelCoordinate& coordinates);
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102
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103 /** Sets "cell precise" layer coordinates to this location
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104 * @throws NotSet in the following cases:
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105 * - layer is not set (NULL)
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106 * - layer does not have cellgrid assigned
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107 * @see setLayerCoordinates(const ExactModelCoordinate& coordinates)
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108 */
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109 void setLayerCoordinates(const ModelCoordinate& coordinates);
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110
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111 /** Sets map coordinates to this location
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112 * @param coordinates coordinates to set
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113 */
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114 void setMapCoordinates(const ExactModelCoordinate& coordinates);
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115
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116 /** Gets reference to exact layer coordinates. This means that if you
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117 * modify the coordinates, location gets modified directly
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118 * @return reference to exact layer coordinates
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119 */
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120 ExactModelCoordinate& getExactLayerCoordinatesRef();
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121
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122 /** Gets exact layer coordinates set to this location
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123 * @return exact layer coordinates
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124 */
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125 ExactModelCoordinate getExactLayerCoordinates() const;
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126
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127 /** Gets exact layer coordinates of this location mapped on given layer
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128 * @throws NotSet in the following cases:
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129 * - given layer is not set (NULL)
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130 * - given layer does not have cellgrid assigned
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131 * @return exact layer coordinates
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132 */
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133 ExactModelCoordinate getExactLayerCoordinates(const Layer* layer) const;
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134
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135 /** Gets cell precision layer coordinates set to this location
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136 * @see getExactLayerCoordinates()
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137 */
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138 ModelCoordinate getLayerCoordinates() const;
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139
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140 /** Gets cell precision layer coordinates of this location mapped on given layer
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141 * @see getExactLayerCoordinates(const Layer* layer)
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142 */
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143 ModelCoordinate getLayerCoordinates(const Layer* layer) const;
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144
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145 /** Gets map coordinates set to this location
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146 * @return map coordinates
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147 */
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148 ExactModelCoordinate getMapCoordinates() const;
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149
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150 /** Gets offset distance from cell center
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151 * @return offset distance
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152 */
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153 double getCellOffsetDistance() const;
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154
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155 /** Tells if location is valid
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156 * Location is valid if:
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157 * - layer is set
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158 * - layer has cellgrid
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159 */
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160 bool isValid() const;
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161
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162 /** Gets distance in map coordinates to another location on the Map
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163 * @param location is the location you want to get the distance to
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164 */
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165 double getMapDistanceTo(const Location& location) const;
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166
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167 /** Gets layer distance to another location
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168 * @param location is the location you want to get the distance to
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169 * In case location resides on different layer, it is mapped to this layer
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170 */
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171 double getLayerDistanceTo(const Location& location) const;
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172
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173 private:
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174 bool isValid(const Layer* layer) const;
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175
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176 Layer* m_layer;
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177 ExactModelCoordinate m_exact_layer_coords;
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178 };
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179
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180 /** Stream output operator.
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181 *
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182 * Useful for debugging purposes
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183 */
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184 std::ostream& operator<<(std::ostream&, const Location&);
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185 }
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186 #endif //FIFE_LOCATION_H