Shows when the user has too less Java memory allocated, and plays a sound when the game has loaded.
It is fully configurable in config/loadsupport.toml.

Directly Shows a warning message

Blocks the title screen

Config

The config in config/loadsupport.toml is pretty self explainatory:

startSound = true
minMemory = 4.0
errorTitle = "Error: Not enough Java memory!"
errorDescription = "Please allocate at least {minMemory} GB of Java memory to your Minecraft Instance! You have currently {currentMemory} GB allocated."

The errorDescription does automatic line breaks. {minMemory} and {currentMemory} get replaced by their actual values.