breakhack/src/event.c

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/*
* BreakHack - A dungeone crawler RPG
* Copyright (C) 2018 Linus Probert <linus.probert@gmail.com>
*
* 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 3 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, see <http://www.gnu.org/licenses/>.
*/
#include "event.h"
#include "util.h"
#include "linkedlist.h"
static LinkedList *callbacks = NULL;
void
event_register_listener(EventCallback cb)
{
// Cast a pointer to a pointer to avoid -wpedantic iso warning
linkedlist_append(&callbacks, *(void**)(&cb));
}
void
event_clear_listeners(void)
{
while (callbacks)
linkedlist_pop(&callbacks);
}
void
event_trigger(Event *event)
{
LinkedList *cbs = callbacks;
while (cbs) {
// Reverse the cast from the register (-pedantic ISO warning)
(*(EventCallback*)(&cbs->data))(event);
cbs = cbs->next;
}
}