linkgraphschedule.h

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/*
 * This file is part of OpenTTD.
 * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
 * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
 */
 
#ifndef LINKGRAPHSCHEDULE_H
#define LINKGRAPHSCHEDULE_H
 
#include "linkgraph.h"
 
class LinkGraphJob;
 
class ComponentHandler {
public:
  virtual ~ComponentHandler() = default;
 
  virtual void Run(LinkGraphJob &job) const = 0;
};
 
class LinkGraphSchedule {
private:
  LinkGraphSchedule();
  ~LinkGraphSchedule();
  typedef std::list<LinkGraph *> GraphList;
  typedef std::list<LinkGraphJob *> JobList;
  friend SaveLoadTable GetLinkGraphScheduleDesc();
 
protected:
  ComponentHandler *handlers[6]; 
  GraphList schedule;            
  JobList running;               
 
public:
  /* This is a tick where not much else is happening, so a small lag might go unnoticed. */
  static const uint SPAWN_JOIN_TICK = 21; 
  static LinkGraphSchedule instance;
 
  static void Run(LinkGraphJob *job);
  static void Clear();
 
  void SpawnNext();
  bool IsJoinWithUnfinishedJobDue() const;
  void JoinNext();
  void SpawnAll();
  void ShiftDates(TimerGameEconomy::Date interval);
 
  void Queue(LinkGraph *lg)
  {
    assert(LinkGraph::Get(lg->index) == lg);
    this->schedule.push_back(lg);
  }
 
  void Unqueue(LinkGraph *lg) { this->schedule.remove(lg); }
};
 
void StateGameLoop_LinkGraphPauseControl();
void AfterLoad_LinkGraphPauseControl();
 
#endif /* LINKGRAPHSCHEDULE_H */