public Boolean ContainsItem(Item item, ItemQuantity quantity)
{
if (!Items.ContainsKey(item))
return quantity == 0;
return Items[item] >= quantity;
}
public Boolean AddItem(Item item, ItemQuantity quantity)
{
ItemQuantity validItemQuantity = GetValidQuantity(item, quantity);
if (validItemQuantity == 0)
return false;
if (!Items.ContainsKey(item))
Items.Add(item, validItemQuantity);
else
Items[item] += validItemQuantity;
return true;
}
public ItemQuantity(ItemQuantity copy)
{
Value = copy.Value;
}
Boolean IsFull(Item item, ItemQuantity addQuantity)
{
return GetQuantity(item) + addQuantity > item.MaxQuantity;
}
ItemQuantity GetValidQuantity(Item item, ItemQuantity quantity)
{
if (IsFull(item, quantity))
return item.MaxQuantity - GetQuantity(item);
return quantity;
}
public Boolean RemoveItem(Item item, ItemQuantity quantity, Boolean forcing = false)
{
if (quantity == 0)
return true;
if (!ContainsItem(item, quantity))
{
if (!forcing)
return false;
Items[item] = new ItemQuantity(0);
return true;
}
Items[item] -= quantity;
return true;
}