ULimenGameSaveSubsystem

Overview

The ULimenGameSaveSubsystem is a subsystem within Unreal Engine that manages game saving and loading. It serializes data from ULimenSavesHandler instances into ULimenGameSaveData, handles the lifecycle of these data objects, and provides asynchronous save and load operations. The subsystem also exposes delegates for tracking the state of save and load operations.

Properties

Type	Name	Access	Description
`FGameSaveDelegate`	OnGameDataLoaded	Public	Delegate called when game data is loaded.
`FGameSaveState`	OnGameSaveStateChanged	BlueprintAssignable	Delegate for tracking the state of save and load operations.

Functions

Return Type	Signature	Description
`void`	Initialize(FSubsystemCollectionBase& Collection)	Initializes the subsystem, setting up dependencies and event listeners.
`void`	Deinitialize()	Cleans up resources and removes event listeners when the subsystem is being destroyed.
`void`	SaveCurrentGame(UObject* Caller)	Saves the current game data asynchronously using the caller's world context.
`void`	LoadCurrentGame(UObject* Caller)	Loads the current game data asynchronously using the caller's world context.
`void`	ScheduleGameLoadOnMapChange()	Schedules a game load when the map changes.
`bool`	HasLoadedGameData() const	Checks if game data has been loaded into the current world.
`bool`	DoesSavedDataExist() const	Checks if a save file exists for the current game slot.
`void`	DeleteGameSave()	Deletes the saved game data for the current game slot.
`bool`	ShouldSaveData() const override	Determines whether to save game data. Always returns true.
`bool`	ShouldLoadData() const override	Determines whether to load game data. Always returns true.
`void`	PreDataSaved() override	Called before data is saved. Currently does nothing.
`void`	PostDataSaved() override	Called after data is saved. Currently does nothing.
`void`	PreDataLoaded() override	Called before data is loaded. Currently does nothing.
`void`	PostDataLoaded() override	Called after data is loaded. Currently does nothing.
`FName`	GetUniqueDeterministicId() const override	Returns a unique, deterministic ID for the subsystem class.
`const [ULimenGameSaveData](LimenGameSaveData.md)*`	GetCurrentGameSaveData() const	Retrieves the current game save data object.
`bool`	IsGameLoadScheduled() const	Checks if a game load is scheduled on map change.

Usage & Implementation Notes

Threading Constraints: The subsystem operates within the Unreal Engine's threading model, utilizing async operations for saving and loading.
Replication Requirements: Not applicable as this is a local-only subsystem.
Memory Lifetime Management: Properly manages memory by destroying temporary objects after serialization and deserialization.
Initialization Dependencies: Depends on ULimenSaveSubsystem to handle actual data storage.

22 May 2026