Amidst can't run with custom non-Mojang launchers

[user21944]

I primarily use MultiMC to play Minecraft which does not save to .minecraft however because of this I can't start Amidst. It brings up an error of not being able to find .minecraft (which obviously doesn't exist). I don't know which files within there it needs but copying my saves and version JAR/JSON didn't work.

It most likely needs the files for instances but it would be nice if you could set up "custom" instances within Amidst using the path to a JAR and save directory. Otherwise I have to install Mojang's launcher just to use Amidst, which I don't want to have to do. I would really appreciate if this could be addressed.

[moulins]

Closing as duplicate of #126.

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You can start "custom instances" from the command-line (see here), by specifying the -mcjar and -mcjson arguments. I've never tested it with MultiMC, but it should work as long as you have a vanilla Minecraft JAR.

[conorthedev]

You can start "custom instances" from the command-line (see here), by specifying the -mcjar and -mcjson arguments. I've never tested it with MultiMC, but it should work as long as you have a vanilla Minecraft JAR.

This doesn't work for me

[moulins]

Oh, yeah, my bad; you also need to use the -mcpath option to specify the location of the MultiMC directory.
You'll have to add some dummy files at the root of the folder for Amidst to recognize it as a valid Minecraft directory:

• an empty saves folder
• an empty versions folder,
• an empty launcher_profiles.json file.

[ghost]

What do you mean the MultiMC directory?

I currently have my setup as java -jar amidst-v4-4.jar -mcpath /Users/alexis/Applications/MultiMC.app/Contents/MacOS/instances/1.16/ -mcjar /Users/alexis/Applications/MultiMC.app/Contents/MacOS/libraries/com/mojang/minecraft/1.16-rc1/minecraft-1.16-rc1-client.jar -mcjson /Users/alexis/Applications/MultiMC.app/Contents/MacOS/meta/net.minecraft/1.16-rc1.json.

I've also tried /Users/alexis/Applications/MultiMC.app/Contents/MacOS/instances/ and /Users/alexis/Applications/MultiMC.app/Contents/MacOS/instances/1.16/.minecraft/ for the mcpath and I keep getting the error `invalid '.minecraft' directory at: <one of the directories I've tried>.

Edit: Yes, I've created the empty file and folders too for each of them.

[moulins]

I'm talking about the <MultiMC root> directory mentionned here. In your case, it should probably bz /Users/alexis/Applications/MultiMC.app/Contents/MacOS/.