Just a quick update to talk about a small mod I wrote for Minecraft 1.14, Cooperative Advancements.
In my spare time, I have been playing Minecraft with the Valhelsia modpack, but I found that having separate advancement progress between players was a regression from other modpacks I've played in the past. Having multiple players on the server be able to work towards a common goal of completing advancements is pretty fun! In older versions of Minecraft, the Together Forever mod could be used to synchronize advancements, but this mod has not yet been updated to the latest version. I decided to write a quick mod (my first time doing so), that helps share advancement progress for all players on a server. It's seriously simple--took me about an hour to throw together, and you can check it out here, if you're interested.
Currently, the mod simply grants an advancement to each player on the server whenever someone earns one. It also synchronizes all player advancements whenever someone logs in. Currently, it does not synchronize advancement progress between players, but that is a potential future feature.