/*
 * Copyright (C) 2002-2007 The Warp Rogue Team
 * Part of the Warp Rogue Project
 *
 * This software is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License.
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY.
 *
 * See the license.txt file for more details.
 */

/*
 * Module Name: Perception
 * Description: Character perception related things
 */


#define los(p1, p2)		(line_of_sight((p1), (p2)) || line_of_sight((p2), (p1)))

#define enemies_noticed(c)	((c)->noticed_enemies->head != NULL)


void		view_screen(const CHARACTER *, const char *, COLOUR);

void		update_perception_data(CHARACTER *);

void		activate_stealth(CHARACTER *);

void		cancel_stealth(CHARACTER *, const CHARACTER *);

bool		character_unnoticed(const CHARACTER *);

void		notice_check(CHARACTER *, bool, bool);

bool		party_can_see(const CHARACTER *);

bool		enemies_are_watching(const CHARACTER *);

CHARACTER *	nearest_noticed_enemy(const CHARACTER *);

bool		unnoticed_enemy_at(const CHARACTER *, const AREA_POINT *);

bool		line_of_sight(const AREA_POINT *, const AREA_POINT *);