File: npcnear.h

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/*
 *	npcnear.h - At random times, run proximity usecode functions on nearby NPC's.
 *
 *  Copyright (C) 2000-2001  The Exult Team
 *
 *  This program 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; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program 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 this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */

#ifndef NPCNEAR_H
#define	NPCNEAR_H	1

#include "lists.h"
#include "tqueue.h"

class Game_window;
class Npc_actor;

/*
 *	This class keeps track of NPC's nearby, and randomly runs the Usecode
 *	proximity functions for them.
 */
class Npc_proximity_handler : public Time_sensitive
	{
	Game_window *gwin;
	unsigned long wait_until;	// Skip running usecodes until past.
public:
	Npc_proximity_handler(Game_window *gw) : gwin(gw)
		{
		wait_until = 0;
		}
					// Add npc to queue.
	void add(unsigned long curtime, Npc_actor *npc,
					int additional_secs = 0);
	void remove(Npc_actor *npc);	// Remove.
					// Run usecode function.
	void handle_event(unsigned long curtime, long udata);
					// Wait before running more funs.
	void wait(int secs);
	void get_all(Actor_queue& list);	// Fill list with nearby NPC's.
	};

#endif	/* INCL_NPCNEAR */