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annotate engine/core/pathfinder/routepather/routepather.h @ 697:ecaa4d98f05f tip

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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 8afb9b443f66
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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21
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22 #ifndef FIFE_PATHFINDER_ROUTEPATHER
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23 #define FIFE_PATHFINDER_ROUTEPATHER
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24
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25 // Standard C++ library includes
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26 #include <map>
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27 #include <vector>
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28
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29 // 3rd party library includes
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30
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31 // FIFE includes
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32 // These includes are split up in two parts, separated by one empty line
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33 // First block: files included from the FIFE root src directory
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34 // Second block: files included from the same folder
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35 #include "model/metamodel/abstractpather.h"
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36 #include "model/structures/location.h"
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37 #include "model/structures/map.h"
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38 #include "util/structures/priorityqueue.h"
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39
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40 namespace FIFE {
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41
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42 class Search;
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43 class SearchSpace;
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44 class RoutePatherSearch;
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45
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46 class RoutePather : public AbstractPather {
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47 public:
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48 /** Constructor.
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49 *
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50 */
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51 RoutePather() : m_map(0), m_nextFreeSessionId(0), m_maxticks(1000) {
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52 }
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53
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54 void setMap(Map* map);
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55 int getNextLocation(const Instance* instance, const Location& target,
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56 double distance_to_travel, Location& nextLocation,
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57 Location& facingLocation, int session_id=-1,
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58 int priority = MEDIUM_PRIORITY);
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59
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60 /** Updates the route pather.
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61 *
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62 * Advances the active search by so many time steps. If the search
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63 * completes then this function pops it from the active session list and
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64 * continues updating the next session until it runs out of time.
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65 */
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66 void update();
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67
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68 /** Cancels a session.
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69 *
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70 * Cancels a route pather session. Determines if it is an active session
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71 * or not and acts accordingly.
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72 *
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73 * @param session_id The id of the session to cancel.
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74 * @return True if the session could be canceled false otherwise.
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75 */
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76 bool cancelSession(const int session_id);
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77
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78 /** Adds a search space to the route pather.
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79 *
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80 * @param search_space A pointer to the search space to add.
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81 * @return a boolean signifying whether the search space was correctly added or not.
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82 */
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83 bool addSearchSpace(SearchSpace* search_space);
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84
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85 /** Retrieves a searchspace associated with the given layer.
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86 *
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87 * @param A pointer to the search space
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88 * @return A pointer to the search space if it could be found, 0 otherwise.
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89 */
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90 SearchSpace* getSearchSpace(Layer * const layer);
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91
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92 std::string getName() const { return "RoutePather"; };
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93 private:
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94 typedef std::list<Location> Path;
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8afb9b443f66 merged the pathfinding branch to trunk
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95 typedef PriorityQueue<RoutePatherSearch*, int> SessionQueue;
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96 typedef std::list<int> SessionList;
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97 typedef std::map<int, Path> PathMap;
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98 typedef std::map<Layer*, SearchSpace*> SearchSpaceMap;
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f970f7dab2dd Allow routepather to re-plan when the plan becomes invalid:
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99 typedef std::map<int, Location> LocationMap;
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100 /** Makes the instance follow the given path.
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101 *
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102 * Calculates the next position the instance should move to given the
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103 * the instance's speed.
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104 *
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105 * @param instance A pointer to the instance to move.
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106 * @param speed The speed to move the instance.
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107 * @param nextLocation An out variable which will store the instances next location.
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108 * @param facingLocation An out variable which will store the instances facing location.
190
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109 * @return true if it was possible to follow the path, false if it was not
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110 */
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111 bool followPath(const Instance* instance, Path& path, double speed, Location& nextLocation, Location& facingLocation);
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112
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113 /** Adds a session id to the session map.
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114 *
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115 * Stores the given session id in the session map.
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116 *
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117 * @param sessionId The session id to store.
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118 */
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119 void addSessionId(const int sessionId);
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120
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121 /** Schedules a plan to be created for the given instance to reach the given
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122 * target; the session id is where the plan should be stored
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123 *
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124 * @param instance is the instance to pathfind for
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125 * @param target is where the instance is going
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126 * @param session_id is which pathfinding slot to put the plan in
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127 * @param priority is the priority of the request
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128 */
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129 void makePlan(const Instance *instance, const Location& target, int session_id, int priority);
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130
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131 /** make a new session id
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132 @return the new session id
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133 */
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134 int makeSessionId();
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135
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136 /** are two locations equivalent from the perspective of pathing */
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137 bool locationsEqual(const Location &a, const Location &b);
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138
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139 /** check whether it's safe to continue moving down the path
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140 @param instance is the instance following the path
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141 @param path is the path to step through
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142 @return true if the path could be followed, false if blocked
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143 */
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144 bool testStep(const Instance *instance, Path& path);
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145
0
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146 /** Determines if the given session Id is valid.
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147 *
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148 * Searches the session list to determine if a search with the given session id
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149 * has been registered.
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150 *
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151 * @return true if one has, false otherwise.
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152 */
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153 bool sessionIdValid(const int sessionId);
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154
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155 /** Removes a session id from the session map.
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156 *
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157 * @param sessionId The session id to remove.
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158 * @return True if the sessionId could be removed, false otherwise.
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159 */
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160 bool invalidateSessionId(const int sessionId);
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161
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162 //The map the search is running on.
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163 Map* m_map;
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164
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165 //A map of currently running sessions (searches).
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166 SessionQueue m_sessions;
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167
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168 //A list of session ids that have been registered.
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169 SessionList m_registeredSessionIds;
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170
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171 //Calculated paths for the movement phase.
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172 PathMap m_paths;
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173
190
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174 //The endpoints for which those paths were calculated
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175 LocationMap m_path_targets;
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176
0
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177 //A map of searchspaces.
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178 SearchSpaceMap m_searchspaces;
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179
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180 //The next free session id.
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181 int m_nextFreeSessionId;
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182
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183 //The maximum number of ticks allowed.
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184 int m_maxticks;
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185 };
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186 }
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187 #endif