Event.cc

#include "Event.h"

namespace simfantasy {
namespace events {
Event::Event(Simulation *simulation) : simulation(simulation) {}
}
}

Event.h

#ifndef SIMFANTASY_EVENT_H
#define SIMFANTASY_EVENT_H

#include <chrono>

#include "Simulation.h"

namespace simfantasy {
namespace events {
using std::chrono::high_resolution_clock;
using simfantasy::simulator::Simulation;

class Event {
 public:
  explicit Event(Simulation *simulation);

  inline high_resolution_clock::time_point timestamp() const {
    return timestamp_;
  }

  inline void Unschedule() {
    unscheduled_ = true;
  }

  inline bool unscheduled() const {
    return unscheduled_;
  }

 private:
  Simulation *simulation;
  high_resolution_clock::time_point timestamp_;
  bool unscheduled_;
};
}
}

#endif //SIMFANTASY_EVENT_H

Simulation.cc

#include "Simulation.h"

namespace simfantasy {
namespace simulator {
inline bool event_cmp(const Event *lhs, const Event *rhs) {
  return lhs->timestamp() > rhs->timestamp();
}

Simulation::Simulation() : events(event_queue(event_cmp)) {}

void Simulation::Run() {
  start_time_ = current_time_ = high_resolution_clock::now();
}
}
}

Simulation.h

#ifndef SIMFANTASY_SIMULATION_H
#define SIMFANTASY_SIMULATION_H

#include <chrono>
#include <queue>
#include <functional>

#include "Event.h"

namespace simfantasy {
namespace simulator {
using std::chrono::high_resolution_clock;
using std::priority_queue;
using std::deque;
using std::function;

using simfantasy::events::Event;
using event_queue = priority_queue<Event *, deque<Event *>, function<bool(Event *, Event *)>>;

class Simulation {
 public:
  Simulation();

  void Run();

 private:
  high_resolution_clock::time_point current_time_;
  event_queue events;
  high_resolution_clock::time_point start_time_;
};
}
}

#endif //SIMFANTASY_SIMULATION_H

[ 25%] Building CXX object CMakeFiles/SimFantasy.dir/main.cc.obj
[ 50%] Building CXX object CMakeFiles/SimFantasy.dir/Simulation.cc.obj
[ 75%] Building CXX object CMakeFiles/SimFantasy.dir/Event.cc.obj
In file included from C:\Users\cgdangelo\CLionProjects\SimFantasy\Simulation.h:8:0,
                 from C:\Users\cgdangelo\CLionProjects\SimFantasy\main.cc:1:
C:\Users\cgdangelo\CLionProjects\SimFantasy\Event.h:11:19: error: 'simfantasy::simulator' has not been declared
 using simfantasy::simulator::Simulation;
                   ^~~~~~~~~
C:\Users\cgdangelo\CLionProjects\SimFantasy\Event.h:15:29: error: expected ')' before '*' token
   explicit Event(Simulation *simulation);
                             ^
C:\Users\cgdangelo\CLionProjects\SimFantasy\Event.h:30:3: error: 'Simulation' does not name a type
   Simulation *simulation;
   ^~~~~~~~~~
In file included from C:\Users\cgdangelo\CLionProjects\SimFantasy\Simulation.h:8:0,
                 from C:\Users\cgdangelo\CLionProjects\SimFantasy\Simulation.cc:1:
C:\Users\cgdangelo\CLionProjects\SimFantasy\Event.h:11:19: error: 'simfantasy::simulator' has not been declared
 using simfantasy::simulator::Simulation;
                   ^~~~~~~~~
C:\Users\cgdangelo\CLionProjects\SimFantasy\Event.h:15:29: error: expected ')' before '*' token
   explicit Event(Simulation *simulation);
                             ^
C:\Users\cgdangelo\CLionProjects\SimFantasy\Event.h:30:3: error: 'Simulation' does not name a type
   Simulation *simulation;
   ^~~~~~~~~~
mingw32-make.exe[2]: *** [CMakeFiles\SimFantasy.dir\build.make:62: CMakeFiles/SimFantasy.dir/main.cc.obj] Error 1
mingw32-make.exe[2]: *** Waiting for unfinished jobs....
mingw32-make.exe[2]: *** [CMakeFiles\SimFantasy.dir\build.make:86: CMakeFiles/SimFantasy.dir/Simulation.cc.obj] Error 1
In file included from C:\Users\cgdangelo\CLionProjects\SimFantasy\Event.h:6:0,
                 from C:\Users\cgdangelo\CLionProjects\SimFantasy\Event.cc:1:
C:\Users\cgdangelo\CLionProjects\SimFantasy\Simulation.h:17:19: error: 'simfantasy::events' has not been declared
 using simfantasy::events::Event;
                   ^~~~~~
C:\Users\cgdangelo\CLionProjects\SimFantasy\Simulation.h:18:36: error: 'Event' was not declared in this scope
 using event_queue = priority_queue<Event *, deque<Event *>, function<bool(Event *, Event *)>>;
                                    ^~~~~
C:\Users\cgdangelo\CLionProjects\SimFantasy\Simulation.h:18:51: error: 'Event' was not declared in this scope
 using event_queue = priority_queue<Event *, deque<Event *>, function<bool(Event *, Event *)>>;
                                                   ^~~~~
C:\Users\cgdangelo\CLionProjects\SimFantasy\Simulation.h:18:58: error: template argument 1 is invalid
 using event_queue = priority_queue<Event *, deque<Event *>, function<bool(Event *, Event *)>>;
                                                          ^
C:\Users\cgdangelo\CLionProjects\SimFantasy\Simulation.h:18:58: error: template argument 2 is invalid
C:\Users\cgdangelo\CLionProjects\SimFantasy\Simulation.h:18:75: error: 'Event' was not declared in this scope
 using event_queue = priority_queue<Event *, deque<Event *>, function<bool(Event *, Event *)>>;
                                                                           ^~~~~
C:\Users\cgdangelo\CLionProjects\SimFantasy\Simulation.h:18:84: error: 'Event' was not declared in this scope
 using event_queue = priority_queue<Event *, deque<Event *>, function<bool(Event *, Event *)>>;
                                                                                    ^~~~~
C:\Users\cgdangelo\CLionProjects\SimFantasy\Simulation.h:18:91: error: expression list treated as compound expression in functional cast [-fpermissive]
 using event_queue = priority_queue<Event *, deque<Event *>, function<bool(Event *, Event *)>>;
                                                                                           ^
C:\Users\cgdangelo\CLionProjects\SimFantasy\Simulation.h:18:92: error: template argument 1 is invalid
 using event_queue = priority_queue<Event *, deque<Event *>, function<bool(Event *, Event *)>>;
                                                                                            ^~
C:\Users\cgdangelo\CLionProjects\SimFantasy\Simulation.h:18:61: error: template argument 1 is invalid
 using event_queue = priority_queue<Event *, deque<Event *>, function<bool(Event *, Event *)>>;
                                                             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
C:\Users\cgdangelo\CLionProjects\SimFantasy\Simulation.h:18:61: error: template argument 2 is invalid
C:\Users\cgdangelo\CLionProjects\SimFantasy\Simulation.h:18:61: error: template argument 3 is invalid
C:\Users\cgdangelo\CLionProjects\SimFantasy\Simulation.h:28:3: error: 'event_queue' does not name a type
   event_queue events;
   ^~~~~~~~~~~
mingw32-make.exe[2]: *** [CMakeFiles\SimFantasy.dir\build.make:110: CMakeFiles/SimFantasy.dir/Event.cc.obj] Error 1
mingw32-make.exe[1]: *** [CMakeFiles\Makefile2:67: CMakeFiles/SimFantasy.dir/all] Error 2
mingw32-make.exe: *** [Makefile:83: all] Error 2