private NavigatableItem Find(int direction)
{
Transform parent = transform.parent;
int siblingCount = parent.childCount;
int rank = transform.GetSiblingIndex();
for (int i = 1; i < siblingCount; ++i)
{
int siblingIndex = (i * direction + rank + siblingCount) % siblingCount;
NavigatableItem target = parent.GetChild(siblingIndex).GetComponent <NavigatableItem>();
if (target != null && target.gameObject.activeSelf)
{
return(target);
}
}
return(null);
}
protected void SetNavItem(NavigatableItem item)
{
if (currentNavItem == item)
{
return;
}
if (currentNavItem != null)
{
currentNavItem.GetComponent <SelectableItem>()?.SetSelected(false);
}
currentNavItem = item;
if (currentNavItem != null)
{
currentNavItem.GetComponent <SelectableItem>()?.SetSelected(true);
}
}