/// <summary>
/// Removes an item from the inventory UI or decreases the stack size by one.
/// Deletes a item button if the count is 0.
/// </summary>
/// <param name="item">The item to remove from the UI</param>
private void RemoveItem(Item item)
{
ItemButton itemButtonInList = _items.Find(button => button.Item == item);
if (itemButtonInList == default(ItemButton))
{
return;
}
itemButtonInList.Count--;
// Skip deletion if amount is left
if (itemButtonInList.Count > 0)
{
return;
}
RemoveItemButton(itemButtonInList);
}
/// <summary>
/// Adds an item to the inventory UI or increases the stack size in case it already exists.
/// Creates a new item button if the previous ones are full.
/// </summary>
/// <param name="item">The item to add to the UI</param>
private void AddItem(Item item)
{
ItemButton itemButtonInList = _items.Find(button => button.Item == item && button.CanAddOne());
// Add to first one found
if (itemButtonInList != default(ItemButton))
{
itemButtonInList.Count++;
return;
}
// Only full stacks or no stack yet
ItemButton itemButton = Instantiate(itemButtonPrefab, itemGrid.transform);
itemGrid.SetPositionInGrid(itemButton.gameObject);
itemButton.Init(item);
_items.Add(itemButton);
}
/// <summary>
/// Removes an ItemButton from the UI and adds an empty space.
/// </summary>
/// <param name="itemButton"></param>
private void RemoveItemButton(ItemButton itemButton)
{
itemGrid.AddEmptySlotAt(itemButton.transform.GetSiblingIndex());
DestroyImmediate(itemButton.gameObject);
_items.Remove(itemButton);
}