types/sign.c

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/************************************************************************
*            Atrinik, a Multiplayer Online Role Playing Game            *
*                                                                       *
*    Copyright (C) 2009-2011 Alex Tokar and Atrinik Development Team    *
*                                                                       *
* Fork from Daimonin (Massive Multiplayer Online Role Playing Game)     *
* and Crossfire (Multiplayer game for X-windows).                       *
*                                                                       *
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.             *
*                                                                       *
* The author can be reached at admin@atrinik.org                        *
************************************************************************/

#include <global.h>

void apply_sign(object *op, object *sign)
{
    if (!sign->msg && !sign->title)
    {
        new_draw_info(0, COLOR_WHITE, op, "Nothing is written on it.");
        return;
    }

    if (sign->stats.food)
    {
        if (sign->last_eat >= sign->stats.food)
        {
            if (!QUERY_FLAG(sign, FLAG_WALK_ON) && !QUERY_FLAG(sign, FLAG_FLY_ON))
            {
                new_draw_info(0, COLOR_WHITE, op, "You cannot read it anymore.");
            }

            return;
        }

        sign->last_eat++;
    }

    /* Sign or magic mouth?  Do we need to see it, or does it talk to us?
     * No way to know for sure.
     *
     * This check fails for signs with FLAG_WALK_ON/FLAG_FLY_ON.  Checking
     * for FLAG_INVISIBLE instead of FLAG_WALK_ON/FLAG_FLY_ON would fail
     * for magic mouths that have been made visible. */
    if (QUERY_FLAG(op, FLAG_BLIND) && !QUERY_FLAG(op, FLAG_WIZ) && !QUERY_FLAG(sign, FLAG_WALK_ON) && !QUERY_FLAG(sign, FLAG_FLY_ON))
    {
        new_draw_info(0, COLOR_WHITE, op, "You are unable to read while blind.");
        return;
    }

    if (sign->slaying || sign->stats.hp || sign->race)
    {
        object *match = check_inv_recursive(op, sign);

        if ((match && sign->last_sp) || (!match && !sign->last_sp))
        {
            if (!QUERY_FLAG(sign, FLAG_WALK_ON) && !QUERY_FLAG(sign, FLAG_FLY_ON))
            {
                new_draw_info(0, COLOR_WHITE, op, "You are unable to decipher the strange symbols.");
            }

            return;
        }
    }

    if (sign->direction && QUERY_FLAG(sign, FLAG_SYS_OBJECT))
    {
        if (op->direction != absdir(sign->direction + 4) && !(QUERY_FLAG(sign, FLAG_SPLITTING) && (op->direction == absdir(sign->direction - 5) || op->direction == absdir(sign->direction + 5))))
        {
            return;
        }
    }

    if (sign->title)
    {
        play_sound_player_only(CONTR(op), CMD_SOUND_EFFECT, sign->title, 0, 0, 0, 0);

        if (!sign->msg)
        {
            return;
        }
    }

    /* Use book GUI? */
    if (QUERY_FLAG(sign, FLAG_XRAYS))
    {
        SockList sl;
        unsigned char sock_buf[MAXSOCKBUF];

        sl.buf = sock_buf;
        SOCKET_SET_BINARY_CMD(&sl, BINARY_CMD_BOOK);
        strcpy((char *) sl.buf + sl.len, sign->msg);
        sl.len += strlen(sign->msg) + 1;
        Send_With_Handling(&CONTR(op)->socket, &sl);

        /* Ensure player is not running, mostly for walk/fly on signs. */
        CONTR(op)->run_on = CONTR(op)->fire_on = 0;
    }
    else
    {
        new_draw_info(0, COLOR_NAVY, op, sign->msg);
    }
}