Persistable Player Data

Verse from sprintermax/UEFNVerseSnippets (VerseLogic/GameFeatures/DataManagement/PersistablePlayerData.verse), by sprintermax, under the MIT license. Pinned at commit 33c167d04. Compile-checked and ready to adapt for UEFN.

• # https://dev.epicgames.com/documentation/en-us/uefn/using-persistable-data-in-verse
  # https://dev.epicgames.com/documentation/en-us/uefn/persistent-player-statistics-in-unreal-editor-for-fortnite
  
  using. /Verse.org/Simulation
  
  PersistablePlayerData<public> := module {
  
      var PersistablePlayerDataMap<public>:weak_map(player, persistable_player_data) = map{}
  
      persistable_player_data<public> := class<final><persistable> {
          # Versioning
          PersistentDataVersion<public>:int = -1 # Last Played Version of Persistable Data
          LastViewedPatchVersion<public>:int = -1 # Last Patch Notes Seen
  
          # Global Stats
          Score<public>:int = 0 # Example
      }
  
      (Player:player).MakePersistableData<public><constructor>(Source:persistable_player_data)<transacts> := persistable_player_data {
          PersistentDataVersion := Source.PersistentDataVersion
          LastViewedPatchVersion := Source.LastViewedPatchVersion