Default Options Mechanics and Functionality

The mod operates based on a "First Run" logic and specific file detection. It does not add any gameplay elements like mobs, blocks, or biomes, but instead modifies the initialization sequence of the Minecraft client.

Initialization Logic

When the Minecraft client starts with this mod installed, it performs the following checks:

1. File Detection: It looks for the existence of options.txt in the root directory of the Minecraft instance
2. Initial Setup: If options.txt is missing (indicating a fresh installation), the mod copies all files from the defaultoptions folder into the root directory
3. Keybinding Preservation: The mod handles keybindings separately to ensure that mod-added keys do not conflict. It can merge default keybindings with existing ones if configured to do so
4. Server List Management: It allows for a default servers.dat to be provided, which is especially useful for official modpack servers

Update Persistence

Because the mod only copies files when they are missing, modpack updates that include changes to the defaultoptions folder will not overwrite a player's existing options.txt. This allows players to keep their custom keybinds and video settings across multiple versions of a modpack.