unity-memento-pattern

To create a checkpoint system in Unity, implement the IOriginator and IMemento interfaces on your objects and use a LoadoutManager to capture and restore immutable state snapshots. This protects internal data while enabling quick saves.

The memento pattern provides immutable state snapshots for Unity objects, enabling undo/redo, quick-loadouts, and robust state restoration without exposing internal details. It is ideal for managing inventory, hotbars, and level progression history.

Add undo and redo functionality by implementing IOriginator on your inventory items and using a LoadoutManager to store memento snapshots. You can then push and pop these snapshots to revert or reapply loadout changes.

Handle deep copies when saving Unity object state snapshots by applying optional Create and Restore patterns alongside IOriginator. This ensures complex nested data within your memento is fully duplicated and correctly reconstructed.

Yes, you can persist UI state and hotbar loadouts by capturing immutable mementos through an IOriginator implementation. The LoadoutManager manages these snapshots externally, ensuring internal originator data remains completely encapsulated.