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MythicHUD features a number of immediate improvements to HappyHUD:

1. Support for all server and client versions from 1.19.4, adding support for 1.20.5 - 1.21.
2. No dependency on ProtocolLib, meaning support for newer Minecraft versions can be added much more rapidly.
3. Significantly better performance due to fully asynchronous packet handling implementation.

Before replacing HappyHUD with MythicHUD, make at least one backup of your server's HappyHUD folder. This is critically important: we will not provide support for users who lost data because a backup did not exist.

MythicHUD will automatically migrate an existing HappyHUD installation. When this occurs, MythicHUD will notify the user through the server console and remind them to migrate their resource pack. Due to the rebranding and new client support, changes have been made to the generated resource pack. The plugin now uses the mythichud namespace, meaning all references to the happyhud namespace need to be renamed, including folders and pack configurations.

Changes in 1.20.5+ to vanilla HUD rendering require a breaking change to MythicHUD's shader. Hence, MythicHUD generates the mythichud-modern overlay to facilitate support for 1.20.5+. To merge this overlay with your pack, simply copy the generated mythichud-modern/ folder and the overlays section of the example pack.mcmeta to your pack. mythichud-modern/ needs to be placed in the root directory of the resource pack (i.e., the same folder as your pack.mcmeta).