1 files changed, 100 insertions, 1 deletions

diff --git a/src/Protocol/Protocol_1_9.cpp b/src/Protocol/Protocol_1_9.cpp
index 7fc6cf5f1..f49a942b8 100644
--- a/src/Protocol/Protocol_1_9.cpp
+++ b/src/Protocol/Protocol_1_9.cpp
@@ -263,6 +263,17 @@ void cProtocol_1_9_0::SendBlockChanges(int a_ChunkX, int a_ChunkZ, const sSetBlo
 
 
 
+void cProtocol_1_9_0::SendOpenBook(const short a_Hand)
+{
+	cPacketizer Pkt(*this, 0x18);  // Plugin Channel
+	Pkt.WriteString("MC|BOpen");
+	Pkt.WriteVarInt32(static_cast<UInt32>(a_Hand));
+}
+
+
+
+
+
 void cProtocol_1_9_0::SendCameraSetTo(const cEntity & a_Entity)
 {
 	cPacketizer Pkt(*this, 0x36);  // Camera Packet (Attach the camera of a player at another entity in spectator mode)
@@ -2917,6 +2928,55 @@ void cProtocol_1_9_0::HandleVanillaPluginMessage(cByteBuffer & a_ByteBuffer, con
 		m_Client->HandleNPCTrade(SlotNum);
 		return;
 	}
+	else if ((a_Channel == "MC|BSign") || (a_Channel == "MC|BEdit"))
+	{
+		HANDLE_READ(a_ByteBuffer, ReadBEInt16, Int16, ItemID);
+		if (ItemID != E_ITEM_BOOK_AND_QUILL)
+		{
+			// Item is not a writeable book
+			return;
+		}
+
+		// Skip item count (1 byte) and item damage (2 bytes)
+		a_ByteBuffer.SkipRead(3);
+
+		// Read nbt content
+		AString BookData;
+		a_ByteBuffer.ReadString(BookData, a_ByteBuffer.GetReadableSpace() - 1);
+		cParsedNBT NBT(BookData.c_str(), BookData.size());
+
+		cItem BookItem;
+		if (a_Channel == "MC|BSign")
+		{
+			BookItem = cItem(E_ITEM_WRITTEN_BOOK);
+			// Add the text to a json string
+			cBookContent::ParseFromNBT(0, BookItem.m_BookContent, NBT, true);
+		}
+		else
+		{
+			BookItem = cItem(E_ITEM_BOOK_AND_QUILL);
+			cBookContent::ParseFromNBT(0, BookItem.m_BookContent, NBT);
+		}
+
+		cPlayer * Player = m_Client->GetPlayer();
+
+		// If true, player has clicked on the sign button
+		bool IsSigned = (BookItem.m_ItemType == E_ITEM_WRITTEN_BOOK) ? true : false;
+
+		if (cRoot::Get()->GetPluginManager()->CallHookPlayerEditingBook(*Player, BookItem.m_BookContent, IsSigned))
+		{
+			// Plugin denied the editing of the book
+			return;
+		}
+
+		// Book has been edited, inform plugins
+		cRoot::Get()->GetPluginManager()->CallHookPlayerEditedBook(*Player, BookItem.m_BookContent, IsSigned);
+
+		cInventory & inv = Player->GetInventory();
+		inv.SetHotbarSlot(inv.GetEquippedSlotNum(), BookItem);
+		SendWholeInventory(*Player->GetWindow());  // TODO: Use SendSlot
+		return;
+	}
 	LOG("Unhandled vanilla plugin channel: \"%s\".", a_Channel.c_str());
 
 	// Read the payload and send it through to the clienthandle:
@@ -3334,12 +3394,26 @@ void cProtocol_1_9_0::WriteItem(cPacketizer & a_Pkt, const cItem & a_Item)
 		a_Pkt.WriteBEInt16(a_Item.m_ItemDamage);
 	}
 
-	if (a_Item.m_Enchantments.IsEmpty() && a_Item.IsBothNameAndLoreEmpty() && (ItemType != E_ITEM_FIREWORK_ROCKET) && (ItemType != E_ITEM_FIREWORK_STAR) && !a_Item.m_ItemColor.IsValid() && (ItemType != E_ITEM_POTION) && (ItemType != E_ITEM_SPAWN_EGG))
+	if (
+		a_Item.m_Enchantments.IsEmpty() &&
+		a_Item.IsBothNameAndLoreEmpty() &&
+		(ItemType != E_ITEM_FIREWORK_ROCKET) && (ItemType != E_ITEM_FIREWORK_STAR) &&
+		!a_Item.m_ItemColor.IsValid() &&
+		(ItemType != E_ITEM_POTION) &&
+		(ItemType != E_ITEM_SPAWN_EGG) &&
+		(ItemType != E_ITEM_WRITTEN_BOOK) && (ItemType != E_ITEM_BOOK_AND_QUILL))
 	{
 		a_Pkt.WriteBEInt8(0);
 		return;
 	}
 
+	if ((ItemType == E_ITEM_BOOK_AND_QUILL) && (a_Item.m_BookContent.GetPages().size() == 0))
+	{
+		// Don't send any nbt tag if the book is writeable and has no pages
+		// If a tag with a empty pages list is send, the player can't enter anything
+		a_Pkt.WriteBEInt8(0);
+		return;
+	}
 
 	// Send the enchantments and custom names:
 	cFastNBTWriter Writer;
@@ -3450,6 +3524,31 @@ void cProtocol_1_9_0::WriteItem(cPacketizer & a_Pkt, const cItem & a_Item)
 			Writer.EndCompound();
 		}
 	}
+	if ((a_Item.m_ItemType == E_ITEM_WRITTEN_BOOK) || (a_Item.m_ItemType == E_ITEM_BOOK_AND_QUILL))
+	{
+		if (a_Item.m_ItemType == E_ITEM_WRITTEN_BOOK)
+		{
+			// Only send author and title for a signed book
+			Writer.AddString("author", a_Item.m_BookContent.GetAuthor());
+			Writer.AddString("title", a_Item.m_BookContent.GetTitle());
+		}
+		if (a_Item.m_BookContent.GetPages().size() > 0)
+		{
+			Writer.BeginList("pages", TAG_String);
+			for (auto & Page : a_Item.m_BookContent.GetPages())
+			{
+				Writer.AddString("", Page);
+			}
+			Writer.EndList();
+		}
+		else
+		{
+			// A signed book, has a empty page
+			Writer.BeginList("pages", TAG_String);
+				Writer.AddString("", "");
+			Writer.EndList();
+		}
+	}
 
 	Writer.Finish();