C++ cItem::IsEmpty方法代码示例

void cSlotAreaAnvil::DistributeStack(cItem & a_ItemStack, cPlayer & a_Player, bool a_ShouldApply, bool a_KeepEmptySlots)
{
	for (int i = 0; i < 2; i++)
	{
		const cItem * Slot = GetSlot(i, a_Player);
		if (!Slot->IsEqual(a_ItemStack) && (!Slot->IsEmpty() || a_KeepEmptySlots))
		{
			// Different items
			continue;
		}
		int NumFit = ItemHandler(Slot->m_ItemType)->GetMaxStackSize() - Slot->m_ItemCount;
		if (NumFit <= 0)
		{
			// Full stack already
			continue;
		}
		if (NumFit > a_ItemStack.m_ItemCount)
		{
			NumFit = a_ItemStack.m_ItemCount;
		}
		if (a_ShouldApply)
		{
			cItem NewSlot(a_ItemStack);
			NewSlot.m_ItemCount = Slot->m_ItemCount + NumFit;
			SetSlot(i, a_Player, NewSlot);
		}
		a_ItemStack.m_ItemCount -= NumFit;
		if (a_ItemStack.IsEmpty())
		{
			UpdateResult(a_Player);
			return;
		}
	}  // for i - Slots
	UpdateResult(a_Player);
}

void cProtocol125::WriteItem(const cItem & a_Item)
{
	short ItemType = a_Item.m_ItemType;
	ASSERT(ItemType >= -1);  // Check validity of packets in debug runtime
	if (ItemType <= 0)
	{
		// Fix, to make sure no invalid values are sent.
		ItemType = -1;
	}
	
	WriteShort(ItemType);
	if (a_Item.IsEmpty())
	{
		return;
	}
	
	WriteChar (a_Item.m_ItemCount);
	WriteShort(a_Item.m_ItemDamage);
	
	if (cItem::IsEnchantable(a_Item.m_ItemType))
	{
		// TODO: Implement enchantments
		WriteShort(-1);
	}
}

void cWindow::DistributeStack(cItem & a_ItemStack, cPlayer & a_Player, cSlotArea * a_ExcludeArea, bool a_ShouldApply)
{
	// Ask each slot area to take as much of the stack as it can.
	// First ask only slots that already have the same kind of item
	// Then ask any remaining slots
	for (int Pass = 0; Pass < 2; ++Pass)
	{
		if (m_ShouldDistributeToHotbarFirst)
		{
			// First distribute into the hotbar:
			if (a_ExcludeArea != m_SlotAreas.back())
			{
				m_SlotAreas.back()->DistributeStack(a_ItemStack, a_Player, a_ShouldApply, (Pass == 0));
				if (a_ItemStack.IsEmpty())
				{
					// Distributed it all
					return;
				}
			}
		}
		
		// The distribute to all other areas:
		cSlotAreas::iterator end = m_ShouldDistributeToHotbarFirst ? (m_SlotAreas.end() - 1) : m_SlotAreas.end();
		for (cSlotAreas::iterator itr = m_SlotAreas.begin(); itr != end; ++itr)
		{
			if (*itr == a_ExcludeArea)
			{
				continue;
			}
			(*itr)->DistributeStack(a_ItemStack, a_Player, a_ShouldApply, (Pass == 0));
			if (a_ItemStack.IsEmpty())
			{
				// Distributed it all
				return;
			}
		}  // for itr - m_SlotAreas[]
	}  // for Pass - repeat twice
}

void cHorse::SetHorseArmor(cItem a_Armor)
{
	if (ItemCategory::IsHorseArmor(a_Armor.m_ItemType))
	{
		m_World->BroadcastSoundEffect("entity.horse.armor", GetPosition(), 1.0f, 0.8f);
	}
	else if (!a_Armor.IsEmpty())
	{
		return;  // Invalid item
	}

	m_Armor = std::move(a_Armor);
	m_World->BroadcastEntityMetadata(*this);
}

void cHorse::SetHorseSaddle(cItem a_Saddle)
{
	if (a_Saddle.m_ItemType == E_ITEM_SADDLE)
	{
		m_World->BroadcastSoundEffect("entity.horse.saddle", GetPosition(), 1.0f, 0.8f);
	}
	else if (!a_Saddle.IsEmpty())
	{
		return;  // Invalid item
	}

	m_Saddle = std::move(a_Saddle);
	m_World->BroadcastEntityMetadata(*this);
}

void cWindow::DistributeStackToAreas(cItem & a_ItemStack, cPlayer & a_Player, cSlotAreas & a_AreasInOrder, bool a_ShouldApply, bool a_BackFill)
{
	/* Ask each slot area to take as much of the stack as it can.
	First ask only slots that already have the same kind of item
	Then ask any remaining slots */
	for (size_t Pass = 0; Pass < 2; Pass++)
	{
		for (auto SlotArea : a_AreasInOrder)
		{
			SlotArea->DistributeStack(a_ItemStack, a_Player, a_ShouldApply, (Pass == 0), a_BackFill);
			if (a_ItemStack.IsEmpty())
			{
				// Distributed it all
				return;
			}
		}
	}
}

void cProtocol132::WriteItem(const cItem & a_Item)
{
	short ItemType = a_Item.m_ItemType;
	ASSERT(ItemType >= -1);  // Check validity of packets in debug runtime
	if (ItemType <= 0)
	{
		// Fix, to make sure no invalid values are sent.
		ItemType = -1;
	}
	
	if (a_Item.IsEmpty())
	{
		WriteShort(-1);
		return;
	}
	
	WriteShort(ItemType);
	WriteChar (a_Item.m_ItemCount);
	WriteShort(a_Item.m_ItemDamage);
	
	if (a_Item.m_Enchantments.IsEmpty())
	{
		WriteShort(-1);
		return;
	}

	// Send the enchantments:
	cFastNBTWriter Writer;
	const char * TagName = (a_Item.m_ItemType == E_ITEM_BOOK) ? "StoredEnchantments" : "ench";
	EnchantmentSerializer::WriteToNBTCompound(a_Item.m_Enchantments, Writer, TagName);
	Writer.Finish();
	AString Compressed;
	CompressStringGZIP(Writer.GetResult().data(), Writer.GetResult().size(), Compressed);
	WriteShort((short)Compressed.size());
	SendData(Compressed.data(), Compressed.size());
}