annotate engine/core/model/structures/layer.h @ 697:ecaa4d98f05f tip

Abstracted the GUI code and refactored the GUIChan-specific code into its own module. * Most of the GUIChan code has been refactored into its own gui/guichan module. However, references to the GuiFont class still persist in the Engine and GuiManager code and these will need further refactoring. * GuiManager is now an abstract base class which specific implementations (e.g. GUIChan) should subclass. * The GUIChan GUI code is now a concrete implementation of GuiManager, most of which is in the new GuiChanGuiManager class. * The GUI code in the Console class has been refactored out of the Console and into the GUIChan module as its own GuiChanConsoleWidget class. The rest of the Console class related to executing commands was left largely unchanged. * Existing client code may need to downcast the GuiManager pointer received from FIFE::Engine::getGuiManager() to GuiChanGuiManager, since not all functionality is represented in the GuiManager abstract base class. Python client code can use the new GuiChanGuiManager.castTo static method for this purpose.
author M. George Hansen <technopolitica@gmail.com>
date Sat, 18 Jun 2011 00:28:40 -1000
parents 16c2b3ee59ce
children
rev   line source
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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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22 #ifndef FIFE_LAYER_H
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23 #define FIFE_LAYER_H
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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 #include <set>
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31 // 3rd party library includes
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32
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33 // FIFE includes
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34 // These includes are split up in two parts, separated by one empty line
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35 // First block: files included from the FIFE root src directory
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36 // Second block: files included from the same folder
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37 #include "util/base/resourceclass.h"
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38 #include "model/metamodel/modelcoords.h"
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39 #include "model/metamodel/object.h"
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41 #include "instance.h"
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42
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43 namespace FIFE {
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44
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45 class Map;
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46 class Selection;
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47 class CellGrid;
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48 class Object;
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49 class InstanceTree;
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51 /** Defines how pathing can be performed on this layer
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52 *
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53 * CELL_EDGES_ONLY allows pather to use only cell edges when moving instances from cell to cell on map
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54 * 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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55 * FREEFORM allows pather to find shortest route regardless of cellgrid used on the layer
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56 */
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57 enum PathingStrategy {
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58 CELL_EDGES_ONLY,
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59 CELL_EDGES_AND_DIAGONALS,
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60 FREEFORM
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61 };
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62
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63 /** Listener interface for changes happening on a layer
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64 */
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65 class LayerChangeListener {
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66 public:
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67 virtual ~LayerChangeListener() {};
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69 /** Called when some instance is changed on layer. @see InstanceChangeType
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70 * @param layer where change occurred
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71 * @param changedInstances list of instances containing some changes
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72 * @note Does not report creations and deletions
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73 */
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74 virtual void onLayerChanged(Layer* layer, std::vector<Instance*>& changedInstances) = 0;
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76 /** Called when some instance gets created on layer
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77 * @param layer where change occurred
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78 * @param instance which got created
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79 */
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80 virtual void onInstanceCreate(Layer* layer, Instance* instance) = 0;
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82 /** Called when some instance gets deleted on layer
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83 * @param layer where change occurred
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84 * @param instance which will be deleted
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85 * @note right after this call, instance actually gets deleted!
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86 */
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87 virtual void onInstanceDelete(Layer* layer, Instance* instance) = 0;
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88 };
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89
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0
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91 /** A basic layer on a map
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92 */
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93 class Layer : public ResourceClass {
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94 public:
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95 /** Constructor
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96 * Layers are created by calling addLayer from map, thus
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97 * this method should really be called only by map or test code
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98 */
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99 Layer(const std::string& identifier, Map* map, CellGrid* grid);
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100
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101 /** Destructs a Layer instance
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102 */
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103 ~Layer();
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104
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105 /** Get the id of this layer.
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106 */
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107 const std::string& getId() const { return m_id; }
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108
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109 /** Sets the identifier for this layer.
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110 */
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111 void setId(const std::string& id) { m_id = id; }
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112
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113 /** Get the map this layer is contained in
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114 */
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115 Map* getMap() const { return m_map; }
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116
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117 /** Get the Cellgrid
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118 * @return a valid cellgrid
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119 */
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120 CellGrid* getCellGrid() const { return m_grid; }
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121
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122 /** Set the Cellgrid
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123 */
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124 void setCellGrid(CellGrid* grid) { m_grid = grid; }
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125
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126 /** Get the instance tree.
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127 * @return this layers instance tree.
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128 */
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129 InstanceTree* getInstanceTree(void) const { return m_instanceTree; }
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130
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131 /** Check existance of objects on this layer
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132 * @return True, if objects exist.
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133 */
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134 bool hasInstances() const;
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135
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136 /** Add an instance of an object at a specific position
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137 */
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138 Instance* createInstance(Object* object, const ModelCoordinate& p, const std::string& id="");
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139
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140 /** Add an instance of an object at a specific position
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141 */
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142 Instance* createInstance(Object* object, const ExactModelCoordinate& p, const std::string& id="");
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143
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144 /** Add a valid instance at a specific position. This is temporary. It will be moved to a higher level
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145 later so that we can ensure that each Instance only lives in one layer.
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146 */
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147 bool addInstance(Instance* instance, const ExactModelCoordinate& p);
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148
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149 /** Remove an instance from the layer
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150 */
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151 void deleteInstance(Instance* object);
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152
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153 /** Get the list of instances on this layer
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154 */
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155 const std::vector<Instance*>& getInstances() const { return m_instances; }
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156
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157 /** Get the list of instances on this layer with the given identifier.
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158 */
99
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159 std::vector<Instance*> getInstances(const std::string& id);
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160
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161 /** Returns instances that match given location.
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162 * @param loc location where to fetch instances from
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163 * @param use_exactcoordinates if true, comparison is done using exact coordinates. if not, cell coordinates are used
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164 */
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165 std::vector<Instance*> getInstancesAt(Location& loc, bool use_exactcoordinates=false);
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166
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167 /** Get the first instance on this layer with the given identifier.
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168 */
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169 Instance* getInstance(const std::string& identifier);
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170
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171 /** Set object visibility
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172 */
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173 void setInstancesVisible(bool vis);
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174
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175 /** Sets the transparency of all instances on the layer. 0=opaque, 255=transparent
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176 * @parm transparency Transparency value from 0-255.
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177 */
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178 void setLayerTransparency(uint8_t transparency);
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179
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180 /** Returns the layer's transparency value
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181 */
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182 uint8_t getLayerTransparency();
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183
0
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184 /** Retrieves the minimum/maximum coordinates of instances on the layer.
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185 * @param min A reference to a ModelCoordinate that will hold the minimum coordinate.
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186 * @param max A reference to a ModelCoordinate that will hold the maximum coordinate.
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187 * @param layer A pointer to another layer that can be used to cast coordinates bettween layers.
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188 */
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189 void getMinMaxCoordinates(ModelCoordinate& min, ModelCoordinate& max, const Layer* layer = 0) const;
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190
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191 /** Determines if a given cell on the layer contains a blocking instance
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192 *
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193 * @param cellCoordinate A const reference to a model coordinate of the cell in question.
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194 * @return A boolean, true if it is blocked false otherwise.
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195 */
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196 bool cellContainsBlockingInstance(const ModelCoordinate& cellCoordinate);
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197
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198 /** Toggle object visibility
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199 * @see setObjectsVisible
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200 */
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201 void toggleInstancesVisible();
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202
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203 /** Check object visibility
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204 * @see setObjectsVisible
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205 */
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206 bool areInstancesVisible() const { return m_instances_visibility; }
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207
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208 /** Called periodically to update events on layer
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209 * @returns true if layer was changed since the last update, false otherwise
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210 */
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211 bool update();
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212
0
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213 /** Sets pathing strategy for the layer
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214 * @see PathingStrategy
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215 */
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216 void setPathingStrategy(PathingStrategy strategy) { m_pathingstrategy = strategy; }
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217
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218 /** Gets pathing strategy for the layer
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219 * @see PathingStrategy
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220 */
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221 PathingStrategy getPathingStrategy() const { return m_pathingstrategy; }
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222
0
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223 /** Adds new change listener
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224 * @param listener to add
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225 */
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226 void addChangeListener(LayerChangeListener* listener);
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227
0
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228 /** Removes associated change listener
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229 * @param listener to remove
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230 */
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231 void removeChangeListener(LayerChangeListener* listener);
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232
0
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233 /** Returns true, if layer information was changed during previous update round
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234 */
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235 bool isChanged() { return m_changed; }
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236
0
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237 /** Returns instances that were changed during previous update round.
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238 * @note does not contain created or deleted instances
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239 */
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240 std::vector<Instance*>& getChangedInstances() { return m_changedinstances; }
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241
482
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242 void setInstanceActivityStatus(Instance* instance, bool active);
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243
0
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244 protected:
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245 std::string m_id;
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246
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247 Map* m_map;
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248
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249 bool m_instances_visibility;
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250
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251 uint8_t m_transparency;
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252
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253 // all the instances on this layer
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254 std::vector<Instance*> m_instances;
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255
482
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256 // all the active instances on this layer
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257 std::set<Instance*> m_active_instances;
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258
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259 //The instance tree
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260 InstanceTree* m_instanceTree;
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261
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262 // layer's cellgrid
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263 CellGrid* m_grid;
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264
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265 // pathing strategy for the layer
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266 PathingStrategy m_pathingstrategy;
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267
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268 // listeners for layer changes
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269 std::vector<LayerChangeListener*> m_changelisteners;
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270
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271 // holds changed instances after each update
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272 std::vector<Instance*> m_changedinstances;
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273
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274 // true if layer (or it's instance) information was changed during previous update round
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275 bool m_changed;
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276 };
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277
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278 } // FIFE
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279
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280 #endif