Mercurial > fife-parpg

annotate engine/core/model/structures/layer.h @ 164:5b04a7d3ded6

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typo fix some missing event (de)registrations ability to capture one event multiple times (instead of only having one slot, we have groups and each group has an own slot, the default group is "default" so we are backward compatible
author spq@33b003aa-7bff-0310-803a-e67f0ece8222
date Wed, 15 Oct 2008 14:57:04 +0000
parents 64e7fe3d4288
children 51cc05d862f2
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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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. *
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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. *
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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_LAYER_H
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23 #define FIFE_LAYER_H
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24
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25 // Standard C++ library includes
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26 #include <algorithm>
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27 #include <string>
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28 #include <vector>
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29
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30 // 3rd party library includes
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31
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32 // FIFE includes
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33 // These includes are split up in two parts, separated by one empty line
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34 // First block: files included from the FIFE root src directory
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35 // Second block: files included from the same folder
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36 #include "util/base/resourceclass.h"
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37 #include "model/metamodel/modelcoords.h"
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38 #include "model/metamodel/object.h"
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39
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40 #include "instance.h"
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41
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42 namespace FIFE {
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43
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44 class Map;
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45 class Selection;
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46 class CellGrid;
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47 class Object;
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48 class InstanceTree;
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49
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50 /** Defines how pathing can be performed on this layer
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51 *
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52 * CELL_EDGES_ONLY allows pather to use only cell edges when moving instances from cell to cell on map
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53 * CELL_EDGES_AND_DIAGONALS allows pather to use both cell edges and diagonals when moving instances from cell to cell on map
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54 * FREEFORM allows pather to find shortest route regardless of cellgrid used on the layer
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55 */
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56 enum PathingStrategy {
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57 CELL_EDGES_ONLY,
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58 CELL_EDGES_AND_DIAGONALS,
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59 FREEFORM
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60 };
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61
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62 /** Listener interface for changes happening on a layer
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63 */
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64 class LayerChangeListener {
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65 public:
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66 virtual ~LayerChangeListener() {};
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67
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68 /** Called when some instance is changed on layer. @see InstanceChangeType
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69 * @param layer where change occurred
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70 * @param changedInstances list of instances containing some changes
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71 * @note Does not report creations and deletions
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72 */
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73 virtual void onLayerChanged(Layer* layer, std::vector<Instance*>& changedInstances) = 0;
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74
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75 /** Called when some instance gets created on layer
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76 * @param layer where change occurred
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77 * @param instance which got created
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78 */
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79 virtual void onInstanceCreate(Layer* layer, Instance* instance) = 0;
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80
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81 /** Called when some instance gets deleted on layer
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82 * @param layer where change occurred
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83 * @param instance which will be deleted
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84 * @note right after this call, instance actually gets deleted!
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85 */
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86 virtual void onInstanceDelete(Layer* layer, Instance* instance) = 0;
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87 };
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88
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89
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90 /** A basic layer on a map
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91 */
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92 class Layer : public ResourceClass {
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93 public:
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94 /** Constructor
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95 * Layers are created by calling addLayer from map, thus
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112fc4af772d moved grid ownership to model in similar way as with pathers
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96 * this method should really be called only by map or test code
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97 */
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98 Layer(const std::string& identifier, Map* map, CellGrid* grid);
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99
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100 /** Destructs a Layer instance
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101 */
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102 ~Layer();
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103
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104 /** Get the id of this layer.
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105 */
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106 const std::string& getId() { return m_id; }
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107
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108 /** Get the map this layer is contained in
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109 */
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110 Map* getMap() const { return m_map; }
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111
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112 /** Get the Cellgrid as set in the constructor
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113 * @return a valid cellgrid
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114 */
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115 CellGrid* getCellGrid() const { return m_grid; }
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116
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117 /** Get the instance tree.
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118 * @return this layers instance tree.
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119 */
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120 InstanceTree* getInstanceTree(void) const { return m_instanceTree; }
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121
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122 /** Check existance of objects on this layer
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123 * @return True, if objects exist.
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124 */
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125 bool hasInstances() const;
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126
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127 /** Add an instance of an object at a specific position
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128 */
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129 Instance* createInstance(Object* object, const ModelCoordinate& p, const std::string& id="");
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130
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131 /** Add an instance of an object at a specific position
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132 */
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133 Instance* createInstance(Object* object, const ExactModelCoordinate& p, const std::string& id="");
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134
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135 /** Add a valid instance at a specific position. This is temporary. It will be moved to a higher level
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136 later so that we can ensure that each Instance only lives in one layer.
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137 */
91
e7b55b2b398f Corrected Layer::addInstance() to return appropriate bool. Added the function to layer.i for swig
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138 bool addInstance(Instance* instance, const ExactModelCoordinate& p);
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139
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140 /** Remove an instance from the layer
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141 */
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142 void deleteInstance(Instance* object);
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143
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144 /** Get the list of instances on this layer
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145 */
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146 const std::vector<Instance*>& getInstances() const { return m_instances; }
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147
99
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148 /** Get the list of instances on this layer with the given identifier.
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149 */
99
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150 std::vector<Instance*> getInstances(const std::string& id);
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151
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152 /** Get the first instance on this layer with the given identifier.
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153 */
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154 Instance* getInstance(const std::string& identifier);
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155
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156 /** Set object visibility
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157 */
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158 void setInstancesVisible(bool vis);
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159
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160 /** Retrieves the minimum/maximum coordinates of instances on the layer.
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161 * @param min A reference to a ModelCoordinate that will hold the minimum coordinate.
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162 * @param max A reference to a ModelCoordinate that will hold the maximum coordinate.
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163 * @param layer A pointer to another layer that can be used to cast coordinates bettween layers.
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164 */
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165 void getMinMaxCoordinates(ModelCoordinate& min, ModelCoordinate& max, const Layer* layer = 0) const;
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166
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167 /** Determines if a given cell on the layer contains a blocking instance
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168 *
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169 * @param cellCoordinate A const reference to a model coordinate of the cell in question.
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170 * @return A boolean, true if it is blocked false otherwise.
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171 */
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172 bool cellContainsBlockingInstance(const ModelCoordinate& cellCoordinate);
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173
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174 /** Toggle object visibility
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175 * @see setObjectsVisible
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176 */
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177 void toggleInstancesVisible();
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178
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179 /** Check object visibility
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180 * @see setObjectsVisible
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181 */
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182 bool areInstancesVisible() const { return m_instances_visibility; }
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183
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184 /** Called periodically to update events on layer
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185 * @returns true if layer was changed since the last update, false otherwise
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186 */
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187 bool update();
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188
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189 /** Sets pathing strategy for the layer
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190 * @see PathingStrategy
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191 */
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192 void setPathingStrategy(PathingStrategy strategy) { m_pathingstrategy = strategy; }
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193
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194 /** Gets pathing strategy for the layer
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195 * @see PathingStrategy
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196 */
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197 PathingStrategy getPathingStrategy() const { return m_pathingstrategy; }
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198
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199 /** Adds new change listener
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200 * @param listener to add
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201 */
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202 void addChangeListener(LayerChangeListener* listener);
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203
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204 /** Removes associated change listener
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205 * @param listener to remove
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206 */
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207 void removeChangeListener(LayerChangeListener* listener);
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208
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209 /** Returns true, if layer information was changed during previous update round
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210 */
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211 bool isChanged() { return m_changed; }
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212
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213 /** Returns instances that were changed during previous update round.
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214 * @note does not contain created or deleted instances
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215 */
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216 std::vector<Instance*>& getChangedInstances() { return m_changedinstances; }
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217
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218 protected:
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219 std::string m_id;
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220
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221 Map* m_map;
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222
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223 bool m_instances_visibility;
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224
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225 // all the instances on this layer
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226 std::vector<Instance*> m_instances;
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227
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228 //The instance tree
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229 InstanceTree* m_instanceTree;
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230
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231 // layer's cellgrid
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232 CellGrid* m_grid;
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233
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234 // pathing strategy for the layer
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235 PathingStrategy m_pathingstrategy;
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236
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237 // listeners for layer changes
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238 std::vector<LayerChangeListener*> m_changelisteners;
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239
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240 // holds changed instances after each update
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241 std::vector<Instance*> m_changedinstances;
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242
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243 // true if layer (or it's instance) information was changed during previous update round
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244 bool m_changed;
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245 };
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246
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247 } // FIFE
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248
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249 #endif