/**

 * Removes duplicates from lists of GRFConfigs. These duplicates

 * are introduced when the _grfconfig_static GRFs are appended

 * to the _grfconfig on a newgame or savegame. As the parameters

 * of the static GRFs could be different that the parameters of

 * the ones used non-statically. This can result in desyncs in

 * multiplayers, so the duplicate static GRFs have to be removed.

 *

 * This function _assumes_ that all static GRFs are placed after

 * the non-static GRFs.

 *

 * @param list the list to remove the duplicates from

 */

static void RemoveDuplicatesFromGRFConfigList(GRFConfig *list)

{

	GRFConfig *prev;

	GRFConfig *cur;

	if (list == NULL) return;

	for (prev = list, cur = list->next; cur != NULL; prev = cur, cur = cur->next) {

		if (cur->grfid != list->grfid) continue;

		assert(HASBIT(cur->flags, GCF_STATIC));

		prev->next = cur->next;

		ClearGRFConfig(&cur);

		cur = prev; // Just go back one so it continues as normal later on

	}

	RemoveDuplicatesFromGRFConfigList(list->next);

}

/**

 * Appends the static GRFs to a list of GRFs

 * @param dst the head of the list to add to

 */

void AppendStaticGRFConfigs(GRFConfig **dst)

{

	GRFConfig **tail = dst;

	while (*tail != NULL) tail = &(*tail)->next;

	CopyGRFConfigList(tail, _grfconfig_static);

	RemoveDuplicatesFromGRFConfigList(*dst);

}

	AppendStaticGRFConfigs(&_grfconfig);

	AppendStaticGRFConfigs(&_grfconfig);

void AppendStaticGRFConfigs(GRFConfig **dst);