script_instance.hpp

Go to the documentation of this file.

/*
 * 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 SCRIPT_INSTANCE_HPP
#define SCRIPT_INSTANCE_HPP
 
#include <squirrel.h>
#include "script_suspend.hpp"
 
#include "../command_type.h"
#include "../company_type.h"
#include "../fileio_type.h"
 
static const uint SQUIRREL_MAX_DEPTH = 25; 
 
class ScriptInstance {
public:
  friend class ScriptObject;
  friend class ScriptController;
 
  ScriptInstance(const char *APIName);
  virtual ~ScriptInstance();
 
  void Initialize(const char *main_script, const char *instance_name, CompanyID company);
 
  virtual int GetSetting(const char *name) = 0;
 
  virtual class ScriptInfo *FindLibrary(const char *library, int version) = 0;
 
  void Continue();
 
  void GameLoop();
 
  void CollectGarbage();
 
  class ScriptStorage *GetStorage();
 
  void *GetLogPointer();
 
  static void DoCommandReturn(ScriptInstance *instance);
 
  static void DoCommandReturnVehicleID(ScriptInstance *instance);
 
  static void DoCommandReturnSignID(ScriptInstance *instance);
 
  static void DoCommandReturnGroupID(ScriptInstance *instance);
 
  static void DoCommandReturnGoalID(ScriptInstance *instance);
 
  static void DoCommandReturnStoryPageID(ScriptInstance *instance);
 
  static void DoCommandReturnStoryPageElementID(ScriptInstance *instance);
 
  static void DoCommandReturnLeagueTableID(ScriptInstance *instance);
 
  static void DoCommandReturnLeagueTableElementID(ScriptInstance *instance);
 
  class ScriptController *GetController() { return controller; }
 
  inline bool IsDead() const { return this->is_dead; }
 
  void Save();
 
  static void SaveEmpty();
 
  void Load(int version);
 
  static void LoadEmpty();
 
  void Pause();
 
  bool IsPaused();
 
  void Unpause();
 
  SQInteger GetOpsTillSuspend();
 
  bool DoCommandCallback(const CommandCost &result, TileIndex tile, const CommandDataBuffer &data, CommandDataBuffer result_data, Commands cmd);
 
  void InsertEvent(class ScriptEvent *event);
 
  bool IsSleeping() { return this->suspend != 0; }
 
  size_t GetAllocatedMemory() const;
 
  inline bool InShutdown() const { return this->in_shutdown; }
 
  void ReleaseSQObject(HSQOBJECT *obj);
 
protected:
  class Squirrel *engine;               
  const char *versionAPI;               
 
  virtual void RegisterAPI();
 
  bool LoadCompatibilityScripts(const char *api_version, Subdirectory dir);
 
  virtual void Died();
 
  virtual CommandCallbackData *GetDoCommandCallback() = 0;
 
  virtual void LoadDummyScript() = 0;
 
private:
  class ScriptController *controller;   
  class ScriptStorage *storage;         
  SQObject *instance;                   
 
  bool is_started;                      
  bool is_dead;                         
  bool is_save_data_on_stack;           
  int suspend;                          
  bool is_paused;                       
  bool in_shutdown;                     
  Script_SuspendCallbackProc *callback; 
  size_t last_allocated_memory;         
 
  bool CallLoad();
 
  static bool SaveObject(HSQUIRRELVM vm, SQInteger index, int max_depth, bool test);
 
  static bool LoadObjects(HSQUIRRELVM vm);
};
 
#endif /* SCRIPT_INSTANCE_HPP */