bot_thread.hh

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#pragma once
 
#include "bot.h"
#include "game.h"
#include "gui/better_random.hh"
#include <memory>
#include <wx/defs.h>
#include <wx/thread.h>
#include <wx/version.h>
 
class BotTurnController;
 
// The implementation of this class is somewhat based on
// <https://github.com/wxWidgets/wxWidgets/blob/v3.2.2.1/src/unix/threadpsx.cpp#L576-L716>.
class BotThreadShared {
public:
  BotThreadShared() {}
 
  void notify_exit();
  void wait_for_exit();
 
  bool exited = false;
 
protected:
  wxMutex mutex{};
  wxCondition condvar{ this->mutex };
 
  wxDECLARE_NO_COPY_CLASS(BotThreadShared);
};
 
class BotThread : public wxThread {
public:
  BotThread(BotTurnController* controller);
  virtual ~BotThread();
  void cancel();
 
  std::shared_ptr<BotThreadShared> shared{ new BotThreadShared() };
 
protected:
  virtual void OnExit() override;
 
#if !wxCHECK_VERSION(3, 1, 6)
  // Stub for when this method is not available.
  bool SetName(const wxString& WXUNUSED(name)) {
    return false;
  }
#endif
 
  BotTurnController* controller;
  std::unique_ptr<Game, decltype(&game_free)> game{ nullptr, game_free };
  std::shared_ptr<BotParameters> bot_params{ nullptr };
  std::unique_ptr<BotState, decltype(&bot_state_free)> bot_state{ nullptr, bot_state_free };
  BetterRng rng;
  volatile bool* cancelled_ptr = nullptr;
};
 
class BotPlacementThread : public BotThread {
public:
  BotPlacementThread(BotTurnController* controller) : BotThread(controller) {}
 
protected:
  virtual ExitCode Entry() override;
};
 
class BotMovementThread : public BotThread {
public:
  BotMovementThread(BotTurnController* controller) : BotThread(controller) {}
 
protected:
  virtual ExitCode Entry() override;
};