marker.cpp

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/*
    CrossFire, A Multiplayer game for X-windows

    Copyright (C) 2008 Crossfire Development Team

    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 authors can be reached via e-mail at crossfire-devel@real-time.com
*/

#include <global.h>
#include <ob_methods.h>
#include <ob_types.h>
#include <sounds.h>
#include <sproto.h>

static method_ret marker_type_process(object *op);
static method_ret marker_type_trigger(object *op, object *cause, int state);

void init_type_marker(void) {
    register_process(MARKER, marker_type_process);
    register_trigger(TRIGGER_MARKER, marker_type_trigger);
}

static void move_marker(object *op) {
    object *tmp;

    /*
    * markers not on a map for any reason should not crash server
    */
    if (!op->map) {
        return;
    }

    for (tmp = GET_MAP_OB(op->map, op->x, op->y); tmp != NULL; tmp = tmp->above) {
        if (tmp->type == PLAYER) { /* we've got someone to MARK */
            if (!find_force(tmp, op->slaying)) {
                object *force = add_force(tmp, op->slaying, op->stats.food);

                if (op->lore)
                    force->lore = add_string(op->lore);

                if (op->msg)
                    draw_ext_info(NDI_UNIQUE|NDI_NAVY, 0, tmp, MSG_TYPE_MISC, MSG_SUBTYPE_NONE,
                        op->msg);

                if (op->stats.hp > 0) {
                    op->stats.hp--;
                    if (op->stats.hp == 0) {
                        /* marker expires--granted mark number limit */
                        object_remove(op);
                        object_free_drop_inventory(op);
                        return;
                    }
                }
            }
        } /* if tmp->type == PLAYER */
    } /* For all objects on this space */
}

static method_ret marker_type_process(object *op) {
    move_marker(op);
    return METHOD_OK;
}

static method_ret marker_type_trigger(object *op, object *cause, int state) {
    (void)cause;
    (void)state;
    move_marker(op);
    return METHOD_OK;
}