static void B_PrevBase_f (void)
{
	const base_t *currentBase = B_GetCurrentSelectedBase();
	const base_t *prevBase;
	base_t *base;

	if (!currentBase)
		return;

	prevBase = NULL;
	base = NULL;
	while ((base = B_GetNextFounded(base)) != NULL) {
		if (base == currentBase)
			break;
		prevBase = base;
	}
	/* if it was the first base, select the last */
	if (!prevBase) {
		while ((base = B_GetNextFounded(base)) != NULL) {
			prevBase = base;
		}
	}

	if (prevBase)
		B_SelectBase(prevBase);
}