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/*
   core/application.h
   This file is part of the Osirion project and is distributed under
   the terms of the GNU General Public License version 2.
*/

#ifndef __INCLUDED_CORE_APPLICATION_H__
#define __INCLUDED_CORE_APPLICATION_H__

#include "sys/sys.h"

#include "core/commandbuffer.h"
#include "core/cvar.h"
#include "core/func.h"
#include "core/message.h"
#include "core/gameinterface.h"

namespace core
{

/// core interface for the client and server Application classes
class Application
{
public:
	/// default constructor
	Application();
	
	/// default destructor
	virtual ~Application();
	
/*-----  inspectors ----------------------------------------------- */	

	/// the current application time, in microseconds
	inline unsigned long timestamp() const { return application_timestamp; }
	
	/// the current application time, in seconds
	float time() const { return ((float)(timestamp()) / 1000.0f); }

	/// true if the core is connected to a running game interface
	inline bool connected() const { return (application_game && application_game->running()); }

	/// return the game interface, returns 0 if the application is not connected to a game
	inline GameInterface *game() { return application_game; }

/*-----  mutators ------------------------------------------------- */	

	/// start the server or connect to remote host
	void connect(std::string const &host);
	
	/// disconnect from the game module
	void disconnect();

	/// load a module
	bool load(std::string const &module_name);

/*-----  virtual mutators ------------------------------------------ */	

	/// initialize the application
	virtual void init(int count, char **arguments);

	/// shutdown the application
	virtual void shutdown();

	/// quit the application without proper shutdown
	virtual void quit(int status);

/*-----  notifications --------------------------------------------- */	

	/// sound notifications from the core to the application
	virtual void notify_sound(const char * name);

	/// text notifications from the core to the application
	virtual void notify_message(const core::Message::Channel channel, const std::string &message);

	/// loading message notification
	virtual void notify_loader(const std::string &message);

	/// connect notification
	virtual void notify_connect();

	/// disconnect notification
	virtual void notify_disconnect();

	/// zone change notification
	virtual void notify_zonechange();

	/// a pointer to the current application instance
	static inline Application *instance() { return application_instance; }

protected:
	/// run a core frame
	virtual void frame(unsigned long timestamp);

	/// load cvar config
	void load_config();

	/// load exra config
	void load_autoexec();
	
	/// save cvar config
	void save_config();

	/// load command line arguments
	void load_commandline(int count, char **argments);

private:
	/// time the core has been running
	unsigned long		application_timestamp;

	GameInterface		*application_game;

	static Application	*application_instance;

	/*-- engine functions --*/

	static void func_help(std::string const &args);
	static void func_quit(std::string const  &args);
	static void func_connect(std::string const &args);
	static void func_disconnect(std::string const  &args);
	static void func_say(std::string const &args);
	static void func_msg(std::string const &args);
	static void func_load(std::string const &args);
	static void func_rcon(std::string const &args);
	static void func_info(std::string const &args);
};

/// pointer to the application
inline Application *application() { return Application::instance(); }

/// pointer to the console
inline sys::ConsoleInterface *console() { return sys::ConsoleInterface::instance(); }

/// pointer to the game interface
inline GameInterface *game() { return Application::instance()->game(); }

}


#endif // __INCLUDED_CORE_APPLICATION_H__