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EventBase.hGo to the documentation of this file.00001 //-*-c++-*- 00002 #ifndef INCLUDED_EventBase_h 00003 #define INCLUDED_EventBase_h 00004 00005 #include "Shared/XMLLoadSave.h" 00006 #include "Shared/FamilyFactory.h" 00007 #include <string> 00008 00009 //! Forms the basis of communication between modules/behaviors in the framework 00010 /*! 00011 * Events are defined by a 3-tuple: 00012 * - The @b generator indicates the class of the creator of the event, and in practice also generally implies the type (i.e. subclass) of the event itself. 00013 * - The @b source indicates the instance of the creator of the event, which differentiates when more than one generator is available. 00014 * - The @b type indicates the role of the event among other events from the source. 00015 * 00016 * Each of these is represented by an ID, the #EventGeneratorID_t (EGID) and #EventTypeID_t (ETID) are 00017 * defined here in EventBase. Source IDs (SID) are defined separately by each generator, so the 00018 * documentation in each entry of EventGeneratorID_t describes how to interpret the source field. 00019 * 00020 * So for example, the button event which results from initially pressing the head button on an ERS-7 00021 * robot would be: 00022 * <center>(EventBase::buttonEGID, ERS7Info::HeadButOffset, EventBase::activateETID)</center> 00023 * 00024 * While the button is held down, additional #statusETID events are used to report varying pressure values (if the button 00025 * is pressure sensitive), and an event with #deactivateETID is sent when the button is released. 00026 * Alternatively, an SID value from a vision detector (say #visObjEGID) refers to seeing a particular object, a completely 00027 * different domain, values of which may overlap with other generators' source IDs. 00028 * Thus, interpreting the source field requires knowing the generator as well. 00029 * 00030 * When the generator doesn't have groups of activity with a 'begin' or 'end', it will use #statusETID 00031 * for all of its events. (in other words, not all generators necessarily have to use activate or deactivate) 00032 * For example, sensor updates are continuously occuring, so you will only ever see 00033 * <center>(EventBase::sensorEGID,SensorSrcID::UpdatedSID,EventBase::statusETID)</center> 00034 * 00035 * The #duration field is also generator specific - some may refer to 00036 * the time since the last activation event (e.g. button events) 00037 * where as others refer to time since last status (e.g. sensors 00038 * updates) 00039 * 00040 * If you want to make a new generator, all you have to do is add a new entry 00041 * to the ID list (#EventGeneratorID_t) and then put its name in the 00042 * #EventGeneratorNames[] array. Alternatively, there is an 'unlicensed spectrum' available under 00043 * #unknownEGID. You can send out events from that generator just 00044 * like any other, but it should only be used for quick tests and hacking 00045 * around... 00046 * 00047 * The generator ID number is only that -- an ID number. 00048 * Events can be posted to the EventRouter anywhere, anytime, 00049 * and do not require anything of the sender. However, there is an EventGeneratorBase which 00050 * can simplify some aspects of behaviors whose sole purpose is processing information 00051 * and generating events. 00052 * 00053 * If more information needs to be sent along with the event, the 00054 * cleanest solution is to create a subclass of EventBase to hold the 00055 * additional information. For example, you can see the existing 00056 * subclasses in the inheritance diagram above. If you want to use a 00057 * quick hack however, you could just pass a pointer to data as the SID if you 00058 * don't need that field for something else, or use a DataEvent. 00059 * 00060 * @note All subclasses must override getClassTypeID() and provide 00061 * a unique value to allow fast polymorphic serialization for inter-process 00062 * communication. Implementing the load/save functions 00063 * ({load,save}BinaryBuffer and {load,save}XML) for your addtional data fields 00064 * would also be necessary in order to allow your event to be sent between 00065 * processes, or eventually, between robots. 00066 * 00067 * @see EventRouter for discussion on sending and receiving of events 00068 * @see Tutorials: 00069 * - <a href="../FirstBehavior2.html">Steps 3, 4, & 5 of Tekkotsu's First Behavior Tutorial</a> 00070 * - <a href="http://www.cs.cmu.edu/~dst/Tekkotsu/Tutorial/events.shtml">David Touretzky's Events Chapter</a> 00071 * - <a href="http://www.cs.cmu.edu/afs/cs/academic/class/15494-s06/www/lectures/behaviors.pdf">CMU's Cognitive Robotics course slides</a> 00072 * - <a href="../media/TekkotsuQuickReference_ERS7.pdf">ERS-7 Quick Reference Sheet</a> 00073 */ 00074 class EventBase : public XMLLoadSave { 00075 public: 00076 //! Lists all possible event generator ids 00077 /*! An event generator is a abstract source of events, used for listening to and parsing certain classes of events 00078 * 00079 * IF YOU ADD AN EVENT GENERATOR, DON'T FORGET TO NAME IT (EventBase::EventGeneratorNames, actual names are in EventBase.cc)*/ 00080 enum EventGeneratorID_t { 00081 unknownEGID=0, //!< default EGID, used if you forget to set it, probably not a good idea to use this for anything except errors or testing quick hacks 00082 aiEGID, //!< not being used, yet (might use this when AI makes decisions?) 00083 audioEGID, //!< Sends an event when a sound starts/ends playback, status events as chained sounds end; SID is SoundManager::Play_ID; duration is playtime 00084 buttonEGID, //!< Sends activate event for button down, deactivate for button up. Status events only for when pressure sensitive buttons' reading changes. (on sensorEGID updates); SIDs are from ButtonOffset_t in the namespace of the target model (e.g. ERS210Info::ButtonOffset_t); duration is button down time 00085 cameraResolutionEGID, //!< Sends a status event whenever the camera's resolution changes, such as a different camera than predicted by RobotInfo is being used, or a camera is hotswapped. SID corresponds to the visOFbkEGID for that camera. 00086 erouterEGID, //!< Sends activate event on first listener, deactivate on last listener, and status on other listener changes.; SID is the generator ID affected 00087 estopEGID, //!< Sends an event when the estop is turned on or off; SID is the MotionManager::MC_ID of the EmergencyStopMC; duration is length of estop activation 00088 grasperEGID, //!< Sends events when the Grasper processes a user request 00089 koduEGID, //!< Sends events when a kodu event occurs 00090 locomotionEGID, //!< Sends events regarding transportation in the world; you can/should assume these will all be LocomotionEvent classes; SID is MotionManager::MC_ID of posting MotionCommand; duration is the time since last velocity change of that MC. (You could generate these for things other than walking...) 00091 lookoutEGID, //!< Sends an event when Lookout request is complete; SID is the id for lookout request 00092 mapbuilderEGID, //!< Sends a status event when map is completed 00093 micOSndEGID, //!< Sends a DataEvent<OSoundVectorData> for every audio buffer received from the system; SID and duration are always 0 (This is generated by the MainObj instantiation of MMCombo) 00094 micRawEGID, //!< reserved for future use 00095 micFFTEGID, //!< reserved for future use 00096 micPitchEGID, //!< Sends a PitchEvent when a particular frequency is detected; SID is a pointer to the PitchDetector, magnitude is product of amplitude and confidence 00097 mocapEGID, //!< Sends a MoCapEvent for "motion capture" or GPS type updates from an external localization source. Used for position/orientation feedback from simulation as well. 00098 motmanEGID, //!< Sends events when a MotionCommand is added or removed, SID is is the MotionManager::MC_ID, duration is always 0; individual MotionCommands may throw status events to signal intermediary status 00099 pilotEGID, //!< Sends events when position of agent is updated or pilot request is completed 00100 powerEGID, //!< Sends events for low power warnings, temperature, etc. see PowerSrcID::PowerSourceID_t 00101 remoteStateEGID, //!< Sent when remote state is updated 00102 runtimeEGID, //!< Sends an activate upon completion of startup, and a deactivate event upon shutdown; source ID undefined (currently 0) 00103 sensorEGID, //!< Sends a status event when new sensor readings are available. see SensorSrcID::SensorSourceID_t 00104 servoEGID, //!< Sends notifications of servo errors; the source id is the Tekkotsu output offset 00105 stateMachineEGID, //!< Sends an event upon entering and leaving a StateNode; SID is pointer to the StateNode; duration is always 0; some state will throw a status event when they have completed their task and are now idling 00106 stateSignalEGID, //!< Sends a DataEvent that can be monitored by a SignalTrans for triggering a state transition 00107 stateTransitionEGID, //!< Sends an event each time a transition is triggered; SID is a pointer to the transition; type is activate at start of firing and deactivate when firing is complete; duration is always 0; activate guaranteed to occur immediately *before* the transition actually occurs 00108 textmsgEGID, //!< Sends status events when a text msg is received on console; generated by the Controller, SID is 0 if broadcast from ControllerGUI, 1 if "private" from BehaviorSwitchControl; duration is always 0 (see Controller for more information) 00109 timerEGID, //!< Sends timer events; you set timers explicitly, you don't have to listen as well. (See EventRouter::addTimer()) There's no cross-talk, only the listener which requested the timer will receive it; SID is whatever you requested it to be; duration is the time (since boot, in ms) that the timer was supposed to go off; these are always status 00110 userEGID, //!< Reserved for user-generated events 00111 visInterleaveEGID,//!< Sends a FilterBankEvent when new interleaved images are available; SID is whatever value you gave during setup (typically in StartupBehavior_SetupVision.cc), duration is always 0 00112 visJPEGEGID, //!< Sends a FilterBankEvent when JPEG compressed images are available; SID is whatever value you gave during setup (typically in StartupBehavior_SetupVision.cc), duration is always 0 00113 visObjEGID, //!< Sends VisionObjectEvents for objects detected in camera images; SID is whatever value you gave during setup (typically in StartupBehavior_SetupVision.cc), duration is always 0 00114 visOFbkEGID, //!< Sends a DataEvent < OFbkImageVectorData > for every camera image received from the system; SID and duration are always 0 (This is generated by the MainObj instantiation of MMCombo) 00115 visPNGEGID, //!< Sends a FilterBankEvent when PNG compressed images are available; SID is whatever value you gave during setup (typically in StartupBehavior_SetupVision.cc), duration is always 0 00116 visRawCameraEGID, //!< Sends a FilterBankEvent when new raw camera images are available; SID is whatever value you gave during setup (typically in StartupBehavior_SetupVision.cc), duration is always 0 00117 visRawDepthEGID, //!< Sends FilterBankEvent when new depth images are available 00118 visRegionEGID, //!< Sends a SegmentedColorFilterBankEvent when color regions are available; SID is whatever value you gave during setup (typically in StartupBehavior_SetupVision.cc), duration is always 0 00119 visRLEEGID, //!< Sends a SegmentedColorFilterBankEvent when RLE encoded color segmentated images are available; SID is whatever value you gave during setup (typically in StartupBehavior_SetupVision.cc), duration is always 0 00120 visSegmentEGID, //!< Sends a SegmentedColorFilterBankEvent when color segmentated images are available; SID is whatever value you gave during setup (typically in StartupBehavior_SetupVision.cc), duration is always 0 00121 wmVarEGID, //!< Sends an event when a watched memory is changed; source id is pointer to WMEntry 00122 worldModelEGID, //!< not being used, yet (for when objects are detected/lost?) 00123 numEGIDs //!< the number of generators available 00124 }; 00125 00126 //! Holds string versions of each of the generator's names, handy for debugging so you can output the events as readable strings (you'll find this in EventBase.cc since it can't go in the header or we get multiply-defined errors during linking) 00127 static const char* const EventGeneratorNames[numEGIDs+1]; 00128 00129 //! an event type id is used to denote whether it's the first in a sequence (button down), in a sequence (button still down), or last (button up) 00130 enum EventTypeID_t { 00131 activateETID, //!< Start of an event sequence, e.g. button down 00132 statusETID, //!< Indicates a value has changed, e.g. new sensor readings 00133 deactivateETID, //!< Last of a series of events, e.g. button up 00134 numETIDs //!< the number of different event types 00135 }; 00136 00137 //! holds string versions of EventTypeID_t 00138 static const char* const EventTypeNames[numETIDs+1]; 00139 00140 //! holds abbreviated string versions of EventTypeID_t 00141 static const char* const EventTypeAbbr[numETIDs]; 00142 00143 //! type used for class ids in the type registry (see getTypeRegistry()) 00144 typedef unsigned int classTypeID_t; 00145 00146 //! type used for the type registry 00147 typedef FamilyFactory<EventBase,classTypeID_t> registry_t; 00148 00149 //! returns a FamilyFactory with which you can look up classTypeID_t's to make new instances from serialized data 00150 static registry_t& getTypeRegistry(); 00151 00152 /*! @name Constructors/Destructors */ 00153 //! constructor 00154 /*! @see EventRouter::postEvent() */ 00155 EventBase(); 00156 EventBase(EventGeneratorID_t gid, size_t sid, EventTypeID_t tid, unsigned int dur=0); 00157 EventBase(EventGeneratorID_t gid, size_t sid, EventTypeID_t tid, unsigned int dur, const std::string& n); 00158 EventBase(EventGeneratorID_t gid, size_t sid, EventTypeID_t tid, unsigned int dur, const std::string& n, float mag); 00159 virtual ~EventBase() {} //!< destructor 00160 00161 //! allows a copy to be made of an event, supporting polymorphism 00162 /*! Must be overridden by all subclasses to allow this to happen 00163 * 00164 * I would like to switch this over to the cloneable interface once 00165 * the compiler gets updated out of the 3.3 branch... see 00166 * Cloneable::clone() for a discussion of the issue and 00167 * implementation notes. */ 00168 virtual EventBase* clone() const { return new EventBase(*this); } 00169 //@} 00170 00171 template<typename T> 00172 operator const T&() const { 00173 const T* recastEvent = dynamic_cast<const T*>(this); 00174 if ( recastEvent == NULL ) 00175 std::cerr << "Attempt to dynamic_cast an EventBase to the wrong type\n"; 00176 return *recastEvent; 00177 } 00178 00179 /*! @name Methods */ 00180 virtual const std::string& getName() const { return stim_id; } //!< gets the name of the event - useful for debugging output, see also getDescription() 00181 virtual EventBase& setName(const std::string& n); //!< sets name to a given string, prevents overwriting by generated names 00182 00183 virtual float getMagnitude() const { return magnitude; } //!< gets "strength" of event - by default 1 for activate and status events, 0 for deactivate events 00184 virtual EventBase& setMagnitude(float m) { magnitude=m; return *this; }//!< sets "strength" of event - you may want to override the default values (see getMagnitude()) 00185 00186 virtual unsigned int getTimeStamp() const { return timestamp; } //!< time event was created 00187 virtual void setTimeStamp(unsigned int t) { timestamp=t; } //!< resets time event was created 00188 00189 virtual EventGeneratorID_t getGeneratorID() const { return genID; } /*!< @brief gets the generator ID for this event @see EventGeneratorID_t */ 00190 virtual EventBase& setGeneratorID(EventGeneratorID_t gid) { genID=gid; genName(); return *this; } /*!< @brief sets the generator ID for this event @see EventGeneratorID_t */ 00191 00192 virtual size_t getSourceID() const { return sourceID; } /*!< @brief gets the source ID for this event @see sourceID */ 00193 virtual EventBase& setSourceID(size_t sid) { sourceID=sid; genName(); return *this; } /*!< @brief sets the source ID for this event @see sourceID */ 00194 00195 virtual EventTypeID_t getTypeID() const { return typeID; } /*!< @brief gets the type ID @see EventTypeID_t */ 00196 virtual EventBase& setTypeID(EventTypeID_t tid) { typeID=tid; unsigned int n=strlen(EventTypeAbbr[typeID]); stim_id.replace(stim_id.size()-n-1,n,EventTypeAbbr[typeID]); return *this; } /*!< @brief sets the type ID @see EventTypeID_t */ 00197 00198 00199 virtual int getHostID() const { return hostID; } //!< ID of the host that generated this event (-1U for localhost) 00200 virtual EventBase& setHostID(int host) { hostID = host; genName(); return *this; } //!< sets the ID of the host associated with this event 00201 00202 virtual unsigned int getDuration() const { return duration; } /*!< @brief gets the time since the beginning of this sequence (the timestamp of the activate event) @see duration */ 00203 virtual EventBase& setDuration(unsigned int d) { duration = d; return *this; }/*!< @brief sets the time since the beginning of this sequence (the timestamp of the activate event) @see duration */ 00204 00205 virtual const std::string& resetName() { nameisgen=true; genName(); return stim_id; } //!< resets name to generated form, overwriting any previous name 00206 virtual bool isCustomName() const { return !nameisgen; } //!< returns true if not using the generated name 00207 00208 //! generates a description of the event with variable verbosity 00209 /*! @param showTypeSpecific should be read by subclasses to add additional information 00210 * @param verbosity can be one of the following values: 00211 * - 0 - Basic: <i>event_name</i> \\t <i>generator_id</i> \\t <i>source_id</i> \\t <i>type_id</i> 00212 * - 1 - Numerics: <i>event_name</i> \\t <i>generator_id</i> \\t <i>source_id</i> \\t <i>type_id</i> 00213 * - 2 - Timing: <i>event_name</i> \\t <i>generator_id</i> \\t <i>source_id</i> \\t <i>type_id</i> \\t <i>duration</i> \\t <i>timestamp</i> 00214 * - 3 and above - Full: <i>event_name</i> \\t <i>generator_id</i> \\t <i>source_id</i> \\t <i>type_id</i> \\t <i>duration</i> \\t <i>timestamp</i> \\t <i>magnitude</i> 00215 * if showTypeSpecific, additional fields will be added after the common fields listed above. */ 00216 virtual std::string getDescription(bool showTypeSpecific=true, unsigned int verbosity=0) const; 00217 00218 inline bool operator<(const EventBase& e) const { return timestamp<e.timestamp; } 00219 00220 //! is true if the genID, typeID, and sourceID's all match 00221 virtual bool operator==(const EventBase& eb) const { 00222 return (sourceID==eb.sourceID && genID==eb.genID && typeID==eb.typeID); 00223 } 00224 //!tests to see if events have the same generator and source IDs 00225 bool sameGenSource(const EventBase& eb) const { return genID==eb.genID && sourceID==eb.sourceID; } 00226 00227 bool longerThan(const EventBase& eb) const { return duration>eb.duration && *this==eb; } //!< compares event duration and ensures same event generator, source, and type - useful for event masks 00228 bool shorterThan(const EventBase& eb) const { return duration<eb.duration && *this==eb; }//!< compares event duration and ensures same event generator, source, and type - useful for event masks 00229 bool equalOrLongerThan(const EventBase& eb) const { return duration>=eb.duration && *this==eb; }//!< compares event duration and ensures same event generator, source, and type - useful for event masks 00230 bool equalOrShorterThan(const EventBase& eb) const { return duration<=eb.duration && *this==eb; }//!< compares event duration and ensures same event generator, source, and type - useful for event masks 00231 00232 static bool isValidGeneratorID(unsigned int egid) { return egid<numEGIDs; } 00233 //@} 00234 00235 //! Useful for serializing events to send between processes 00236 /*! @name LoadSave interface */ 00237 00238 //! All subclasses should override this and return a unique ID for their class. 00239 /*! All IDs corresponding to all-capital letters are reserved for future 00240 * framework expansion. (Thus, user subclasses should contain at least one 00241 * lower-case letter.) This code can be used when serializing to allow quick 00242 * identification of the class type by the receiver. */ 00243 virtual classTypeID_t getClassTypeID() const { return autoRegisterEventBase; } 00244 00245 virtual unsigned int getBinSize() const; //!< should return the minimum size needed if using binary format (i.e. not XML) 00246 virtual unsigned int loadBinaryBuffer(const char buf[], unsigned int len); //!< load from binary format 00247 virtual unsigned int saveBinaryBuffer(char buf[], unsigned int len) const; //!< save to binary format 00248 virtual void loadXML(xmlNode* node); //!< load from XML format 00249 virtual void saveXML(xmlNode * node) const; //!< save to XML format 00250 00251 //! no longer need to override this -- will automatically call either loadXML() or loadBinaryBuffer() based on #saveFormat 00252 /*! tries to be smart so if the load based on the current #saveFormat fails, retries with the alternative format */ 00253 virtual unsigned int loadBuffer(const char buf[], unsigned int len, const char* filename=NULL) { 00254 unsigned int test = saveFormat!=BINARY ? XMLLoadSave::loadBuffer(buf,len,filename) : loadBinaryBuffer(buf,len); 00255 if(test!=0) //if the default didn't work, try the other format too... 00256 return test; 00257 return saveFormat!=BINARY ? loadBinaryBuffer(buf,len) : XMLLoadSave::loadBuffer(buf,len,filename); 00258 } 00259 //! no longer need to override this -- will automatically call either saveXML() or saveBinaryBuffer() based on #saveFormat 00260 virtual unsigned int saveBuffer(char buf[], unsigned int len) const { return saveFormat!=BINARY ? XMLLoadSave::saveBuffer(buf,len) : saveBinaryBuffer(buf,len); } 00261 00262 //! automatically calls either XMLLoadSave::loadFile or LoadSave::loadFile based on #saveFormat 00263 /*! tries to be smart so if the load based on the current #saveFormat fails, retries with the alternative format */ 00264 virtual unsigned int loadFile(const char* filename) { 00265 unsigned int test = saveFormat!=BINARY ? XMLLoadSave::loadFile(filename) : LoadSave::loadFile(filename); 00266 if(test!=0) //if the default didn't work, try the other format too... 00267 return test; 00268 return saveFormat!=BINARY ? LoadSave::loadFile(filename) : XMLLoadSave::loadFile(filename); 00269 } 00270 //! automatically calls either XMLLoadSave::saveFile or LoadSave::saveFile based on #saveFormat 00271 virtual unsigned int saveFile(const char* filename) const { return saveFormat!=BINARY ? XMLLoadSave::saveFile(filename) : LoadSave::saveFile(filename); } 00272 00273 //! automatically calls either XMLLoadSave::loadFileStream or LoadSave::loadFileStream based on #saveFormat 00274 virtual unsigned int loadFileStream(FILE* f, const char* filename=NULL) { return saveFormat!=BINARY ? XMLLoadSave::loadFileStream(f,filename) : LoadSave::loadFileStream(f,filename); } 00275 //! automatically calls either XMLLoadSave::loadFileStream or LoadSave::loadFileStream based on #saveFormat 00276 virtual unsigned int saveFileStream(FILE* f) const { return saveFormat!=BINARY ? XMLLoadSave::saveFileStream(f) : LoadSave::saveFileStream(f); } 00277 00278 //! values to pass to setSaveFormat() 00279 enum SaveFormat { 00280 BINARY, //!< saves will be in packed binary, loads will try binary first 00281 XML //!< saves will be in xml, loads will try xml first 00282 }; 00283 virtual void setSaveFormat(SaveFormat sf) const { saveFormat=sf; } //!< set #saveFormat 00284 virtual SaveFormat getSaveFormat() const { return saveFormat; } //!< return #saveFormat 00285 //@} 00286 00287 protected: 00288 //! converts the first 4 characters of @a str to an unsigned int, should ensure consistent byte ordering across platforms 00289 static unsigned int makeClassTypeID(const char* str) { 00290 #if LOADSAVE_SWAPBYTES 00291 unsigned int x; 00292 byteswap(x,*reinterpret_cast<const unsigned int*>(str)); 00293 return x; 00294 #else 00295 return *reinterpret_cast<const unsigned int*>(str); 00296 #endif 00297 } 00298 00299 std::string stim_id; //!< the name of the event, use the same name consistently or else will be seen as different stimuli 00300 float magnitude; //!< the current "strength" of the event/stimuli... MAKE SURE this gets set to ZERO IF event is DEACTIVATE 00301 unsigned int timestamp; //!< the time the event was created - set automatically by constructor 00302 00303 mutable SaveFormat saveFormat; //!< controls the format used during the next call to saveBuffer() (packed binary or XML) 00304 00305 bool nameisgen; //!< tracks whether the current name (stim_id) was generated by genName() (true) or setName() (false) 00306 virtual void genName(); //!< calls setName() with a string version of sourceID, decimal notation 00307 00308 EventGeneratorID_t genID; //!< generator ID, see EventGeneratorID_t 00309 EventTypeID_t typeID; //!< type ID, see EventTypeID_t 00310 size_t sourceID; /*!< @brief the source ID for this event 00311 * Source IDs are defined by the generator that made it. This should 00312 * give authors flexibility to design their modules without having to 00313 * worry about ID space collision */ 00314 int hostID; 00315 unsigned int duration; /*!< @brief the time since this sequence started (like, how long the 00316 * button has been pressed); not all generators will set this; 00317 * Typically, this would be 0 for activate, 00318 * (activate.timestamp-::get_time()) for status and deactivate */ 00319 00320 //! causes class type id to automatically be regsitered with EventBase's FamilyFactory (getTypeRegistry()) 00321 static const EventBase::classTypeID_t autoRegisterEventBase; 00322 }; 00323 00324 /*! @file 00325 * @brief Describes EventBase, the basic class for sending events around the system 00326 * @author ejt (Creator) 00327 */ 00328 00329 #endif |
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