/***************************************************************************
 *  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 <sys/types.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include "merc.h"
#include "interp.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 ) );
CH_CMD ( 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 );
        chsend ( "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
    {
        chsend ( "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;
    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 )
{
    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" );

    chsend ( buf, ch );
    return;
}