Server Packets: Graphical User Interface for Containers

These packets are used to manage the Graphical User Interface for Containers (eg Inventory, Furnace, Crafting table, etc) – opening/closing, inserting/removing items, etc.  The packets all come from EntityPlayerMP, and are handled by calls to EntityClientPlayerMP.

	Typical server origin	NetClientHandler (Client processing)	Called by Client during processing
Packet100OpenWindow Open a GUI window (eg chest, furnace)	EntityPlayerMP .displayGUIxxxxxx	.handleOpenWindow() Various including chest, workbench, furnace, etc	EntityClientPlayerMP .displayGUIxxxxxx
Packet101CloseWindow Closes the current GUI (chest etc)	EntityPlayerMP	.handleCloseWindow()	EntityClientPlayerMP
Packet103SetSlot Put an item into the specified inventory or hotbar slot	EntityPlayerMP	.handleSetSlot()	EntityClientPlayerMP
Packet104WindowItems Fill the inventory with a list of items.	EntityPlayerMP	.handleWindowItems()	EntityClientPlayerMP
Packet105UpdateProgressbar Update the progress bar eg for furnace, repair, enchantment, etc	EntityPlayerMP	.handleUpdateProgressbar()	EntityClientPlayerMP
Packet106Transaction This packet works together with Packet102 to ensure that the container contents remain properly synchronised on client and server.	NetServerHandler .handleWindowClick	.handleTransaction()
Packet133TileEditorOpen Displays the GUI for editing a sign at a given [x,y,z]	EntityPlayerMP	.handleTileEditorOpen()	EntityClientPlayerMP .displayGUIEditSign

There is also an FMLPacket used to open Graphical User Interfaces:

	Typical Server origin	FMLClientHandler (Client processing)	Called by Client during processing
OpenGuiPacket	FMLNetworkHandler .openGui NetworkRegistry .openRemoteGui	.showGuiScreen()	NetworkRegistry.openRemoteGui or NetworkRegistry.openLocalGui