/***************************************************************************
 *  Original Diku Mud copyright (C) 1990, 1991 by Sebastian Hammer,        *
 *  Michael Seifert, Hans Henrik St{rfeldt, Tom Madsen, and Katja Nyboe.   *
 *                                                                         *
 *  Merc Diku Mud improvments copyright (C) 1992, 1993 by Michael          *
 *  Chastain, Michael Quan, and Mitchell Tse.                              *
 *                                                                         *
 *  In order to use any part of this Merc Diku Mud, you must comply with   *
 *  both the original Diku license in 'license.doc' as well the Merc       *
 *  license in 'license.txt'.  In particular, you may not remove either of *
 *  these copyright notices.                                               *
 *                                                                         *
 *  Much time and thought has gone into this software and you are          *
 *  benefitting.  We hope that you share your changes too.  What goes      *
 *  around, comes around.                                                  *
 ***************************************************************************/
 
/***************************************************************************
*	ROM 2.4 is copyright 1993-1998 Russ Taylor			   *
*	ROM has been brought to you by the ROM consortium		   *
*	    Russ Taylor (rtaylor@hypercube.org)				   *
*	    Gabrielle Taylor (gtaylor@hypercube.org)			   *
*	    Brian Moore (zump@rom.org)					   *
*	By using this code, you have agreed to follow the terms of the	   *
*	ROM license, in the file Rom24/doc/rom.license			   *
***************************************************************************/

#include "merc.h"

char *const distance[4] = {
    "right here.",
    "nearby to the %s.",
    "not far %s.",
    "off in the distance %s."
};

void scan_list           args((ROOM_INDEX_DATA *scan_room, CHAR_DATA *ch,
                               sh_int depth, sh_int door));
void scan_char           args((CHAR_DATA *victim, CHAR_DATA *ch,
                               sh_int depth, sh_int door));

ACMD(do_scan) {
    char arg1[MAX_INPUT_LENGTH], buf[MAX_INPUT_LENGTH];
    ROOM_INDEX_DATA *scan_room;
    EXIT_DATA *pExit;
    sh_int door, depth;

    argument = one_argument(argument, arg1);

    if (arg1[0] == '\0') {
	act("$n looks all around.", ch, NULL, NULL, TO_ROOM);
	send_to_char("Looking around you see:\n\r", ch);
//	scan_list(ch->in_room, ch, 0, -1);

	for (door=0;door<6;door++) {
	    if ((pExit = ch ->in_room->exit[door]) != NULL)
		scan_list(pExit->u1.to_room, ch, 1, door);
	}
	return;
    }
    else if (!str_cmp(arg1, "n") || !str_cmp(arg1, "north")) door = 0;
    else if (!str_cmp(arg1, "e") || !str_cmp(arg1, "east"))  door = 1;
    else if (!str_cmp(arg1, "s") || !str_cmp(arg1, "south")) door = 2;
    else if (!str_cmp(arg1, "w") || !str_cmp(arg1, "west"))  door = 3;
    else if (!str_cmp(arg1, "u") || !str_cmp(arg1, "up" ))   door = 4;
    else if (!str_cmp(arg1, "d") || !str_cmp(arg1, "down"))  door = 5;
    else {
	send_to_char("Which way do you want to scan?\n\r", ch);
	return;
    }

    act("You peer intently $T.", ch, NULL, dir_name[door], TO_CHAR);
    act("$n peers intently $T.", ch, NULL, dir_name[door], TO_ROOM);
    sprintf(buf, "Looking %s you see:\n\r", dir_name[door]);

    scan_room = ch->in_room;

    for (depth = 1; depth < 4; depth++) {
	if ((pExit = scan_room->exit[door]) != NULL) {
	    scan_room = pExit->u1.to_room;
	    scan_list(pExit->u1.to_room, ch, depth, door);
	}
    }
    return;
}

void scan_list(ROOM_INDEX_DATA *scan_room, CHAR_DATA *ch, sh_int depth, sh_int door) {
    CHAR_DATA *rch;

    if (scan_room == NULL)
	return;

    if (door != -1 && scan_room->exit[rev_dir[door]] != NULL
    && IS_SET(scan_room->exit[rev_dir[door]]->exit_info, EX_CLOSED))
	return;

    for (rch=scan_room->people; rch != NULL; rch=rch->next_in_room) {
	if (rch == ch)
	    continue;
	if (!IS_NPC(rch) && rch->invis_level > get_trust(ch))
	    continue;
	if (can_see(ch, rch))
	    scan_char(rch, ch, depth, door);
    }
    return;
}

void scan_char(CHAR_DATA *victim, CHAR_DATA *ch, sh_int depth, sh_int door) {
   extern char *const distance[];
   char buf[MAX_INPUT_LENGTH], buf2[MAX_INPUT_LENGTH];

   buf[0] = '\0';

   strcat(buf, PERS(victim, ch));
   strcat(buf, ", ");
   sprintf(buf2, distance[depth], dir_name[door]);
   strcat(buf, buf2);
   strcat(buf, "\n\r");
 
   send_to_char(buf, ch);
   return;
}