types/detector.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 move_detector(object *op)
{
    object *tmp;
    int last = op->value, detected = 0;

    for (tmp = GET_BOTTOM_MAP_OB(op); tmp != NULL && !detected; tmp = tmp->above)
    {
        object *tmp2;

        if (op->stats.hp)
        {
            for (tmp2 = tmp->inv; tmp2; tmp2 = tmp2->below)
            {
                if (op->slaying && !strcmp(op->slaying, tmp->name))
                {
                    detected = 1;
                }

                if (tmp2->type == FORCE && tmp->slaying && tmp2->slaying == op->slaying)
                {
                    detected = 1;
                }
            }
        }

        if (op->slaying && op->slaying == tmp->name)
        {
            detected = 1;
        }
        else if (tmp->type == KEY && tmp->slaying == op->slaying)
        {
            detected = 1;
        }
    }

    /* the detector sets the button if detection is found */
    if (op->stats.sp == 1)
    {
        if (detected && last == 0)
        {
            op->value = 1;
            push_button(op);
        }

        if (!detected && last == 1)
        {
            op->value = 0;
            push_button(op);
        }
    }
    /* in this case, we unset buttons */
    else
    {
        if (detected && last == 1)
        {
            op->value = 0;
            push_button(op);
        }

        if (!detected && last == 0)
        {
            op->value = 1;
            push_button(op);
        }
    }
}