How to make a new instance of a gui for every player?

[Mecblader]

I'm not sure if I worded the title correctly, but I need a way to have my gui have a separates instance for each player. For example, the crafting table, when a player put in items ore blocks, another player  can not see what is happening. I need that sort of thing for my custom furnace. If you know how I could do this, would this be difficult to accomplish. All help is appreciated. Thank you in advance.

[larsgerrits]

If you are using a TileEntity (i doubt you don't), then you can't make a new instance of every gui for every player. If you look at the Workbench code, you can see that the Workbench doesn't use a TileEntity, and that's why it spits it's items on the ground when closing the gui.

[Mecblader]

How would I go about, making a new instance?

[Jwosty]

I would use a tile entity that has a hash map of type HashMap<String, Item[]>, where the string is a player's username. You can then get/set a player's items that they are smelting from that hashmap and act accordingly.

[Mecblader]

Sorry, but could you explain further. What method could I get the player that is currently using the tile entity and how would IExtendedEntityProperties allow me to store the items in the furnace, is it just another set of nbt data that still exists after the player exits the Tile Entity?

[Jwosty]

Easiest way would be to use IExtendedEntityProperties. That is only needed if you want the items to persist in the block. If you want it to act like the workbench, you dont need to do that.

Not sure if this is quite the right solution, as it would only introduce one furnace inventory per player -- it would become a sort of "ender furnace".

[Mecblader]

Then what solution do you suggest. I don't think that an ender furnace will be bad for my use, unless there is something code-wise that is bad about it. If there nothing bad with an ender furnace, then how would I accomplish this because I can not find a good way to get the player that is currently using the furnace, the way that I have found keeps copying the original players furnace inventory to its own inventory after it rapidly switches between the two inventories for a few seconds.

[Mecblader]

Is there a method that update every tick because I need this to update every tick, to make the furnace tick.