FancyMenu adds some commands to the game that can be very useful when combining them with other mods like FTB Quests.
FancyMenu needs to be on the SERVER (and client) to use commands in Multiplayer!
The /openguiscreen command lets you open a GUI (Vanilla/mod and custom GUIs).
It can even remotely open GUIs for other players when FancyMenu is installed on both server and clients.
For a more in-detail description of this command, take a look at the Open GUIs by Command page.
This command will not work for every screen, especially mod screens. If the command fails to open a screen, it will show an error. There is not much you can do in that case, because then it's probably a screen that is too complex to get opened automatically by FancyMenu.
I will also not manually add compatibility for mod screens anymore, because adding compatibility for all the mods out there would take me ages, sorry.
Usage: /openguiscreen <screen_identifier> <target_player>
The /closeguiscreen command lets you close the current GUI.
Huh? This is totally useless you say?
Well yes, but actually no.
This command is useful for when using mods that trigger commands on specific actions.
So yes, this command is absolutely useless when using it without other mods, but can be really helpful if you have the right mods installed!
Usage: /closeguiscreen <target_player>
The /fmvariable command allows you to set and get FancyMenu variables.
To execute this command as another player on servers, you can use the /execute as Vanilla command.
So lets say you want to execute the /fmvariable command as the player ExamplePlayer. In that case you would type:
/execute as ExamplePlayer run fmvariable....
Usage: /fmvariable <get_or_set> <variable_name> [<set_to_value>] [<send_chat_feedback>]
To get a variable value, use the get sub-command like this:
/fmvariable get some_variable
Then the value of this variable will be printed to your chat.
To set a varaible, use the set sub-command like this:
/fmvariable set some_variable new_value true
The last argument here is to set if you want to receive chat feedback, which means if you want this command to print messages to your chat.