breakhack/src/event.c

/*
 * 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;
	}
}