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/*
   core/signals.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_SIGNALS_H__
#define __INCLUDED_CORE_SIGNALS_H__

#include <list>

#include "core/player.h"

namespace core
{

/**
 * @brief a signal is a confirmation request from one player to another.
 */
class Signal {
public:	
	/// signal types
	enum Signals {Trade = 1, Dock = 2, Chat = 3};
	
	/// current state of a signal
	enum State {Rejected = 0, Accepted = 1, Pending = 2};

	
	/// type definition for the signal registry
	typedef std::list<Signal*> Registry;

	static void send(Player *sender, Player *receiver, Signals signal);
	
	static void init();
	
	static void done();
	
	static void clear();
	
private:
	Signals			signal_type;
	State			signal_state;
	unsigned long		signal_timestamp;
	
	static Registry 	signal_registry;
};

}

#endif // __INCLUDED_CORE_SIGNALS_H__