Retro Minecraft Speedrun Helper is a mod spanning from Alpha 1.1.2 to Release 1.2.5 that does two things:

a.) Use native libraries to present information from the game in such a way that programs like AutoSplitters can easily read them and properly split.

b.) Display the coordinates on screen at all time

Its primary use case is allowing older Minecraft Adventure maps to be speedrun convienently, as well as allow runs for maps to start based on where the player coordinates are. The displaying of coordinates is useful for older versions where the F3 debug menu doesn't show coordinates, but its here for all versions so that you don't have to submit a run with the F3 menu open.

Find the version that corresponds to your Minecraft version in the releases tab.

Actually installing the mod depends on what launcher you use. Assuming you use a MultiMC-based launcher like PrismLauncher, locate the "Add to Minecraft.jar" button in the Versions tab of your instance, click it, then select the .zip you downloaded (do not extract the .zip) itself.

The repo uses a Makefile to setup the environment (it uses RetroMCP-Java), decompile all the versions of Minecraft that are supported, patch them, get them ready for distribution, and build/package the native DLL.

The make commands that can be used are:

make # Runs all of the below commands in the correct order
make env_setup # Setup the environment
make setup # Setup folders for all the supported versions of the game
make decompile # Decompile all the supported versions of the game
make patch # Patch all the supported versions of the game