SaveGameToSlot — save a SaveGame object to disk

SlotName is an arbitrary string key (e.g. 'SaveSlot1'). UserIndex 0 for single-player.

LoadGameFromSlot — load a SaveGame from disk

Returns null if slot doesn't exist. Always check IsValid before using the result.

DoesSaveGameExist — check if a save slot exists on disk

Asset

Any project file the editor manages — Blueprints, textures, sounds, materials, levels, etc. Stored as .uasset on disk.

Checkpoint and autosave system with trigger volumes

Pattern: BP_Checkpoint with BoxTrigger, variable CheckpointID(int). OnBeginOverlap(Player) → DoOnce → CreateSaveGameObject(MySaveGame) → SET PlayerLocation, Health, Inventory, CheckpointID → SaveGameToSlot('AutoSave', 0). On death/respawn: LoadGameFromSlot('AutoSave') → Cast → TeleportTo(SavedLocation) → restore Health etc. Show 'Checkpoint Reached' UI briefly.

string

string

Attenuation

Distance-based volume falloff. A Sound Attenuation asset defines the curve and falloff radius.

Health and damage system with ApplyDamage and EventAnyDamage

Dealing damage: Event → ApplyDamage(TargetActor, BaseDamage, InstigatorController, DamageCauser, DamageTypeClass). Receiving: EventAnyDamage → Damage output → Subtract_FloatFloat(CurrentHealth, Damage) → FClamp(Result, 0, MaxHealth) → SET CurrentHealth → Branch(CurrentHealth <= 0) → True: DestroyActor. Initialize CurrentHealth=MaxHealth in BeginPlay.

Create a Blueprint for a car turntable that auto-rotates and allows mouse drag to manually rotate the car

CreateSaveGameObject — create save game instance

UGameplayStatics::CreateSaveGameObject. Cast result to your SaveGame class.