Respawn system: death → delay → respawn at PlayerStart

In Character BP: OnDied (custom event) → SetActorHiddenInGame(true) → SetActorEnableCollision(false) → Disable input: GetController → DisableInput → Delay(Duration=3.0) → GetGameMode → CastTo<BP_GameMode> → RestartPlayer(GetController) → SetActorHiddenInGame(false) → SetActorEnableCollision(true) → EnableInput. In GameMode RestartPlayer: Gets nearest PlayerStart → SetActorLocation to PlayerStart → calls OnPossess. OR manual: GetAllActorsOfClass(PlayerStart) → Random select → SetActorLocationAndRotation(PlayerStart.Location, PlayerStart.Rotation).

Respawn system that moves player to spawn point after death

Pattern: On Health<=0 → DisableInput(PC) → PlayMontage(DeathAnim) → Delay(DeathAnimDuration) → GetActorOfClass(PlayerStart) → TeleportTo(SpawnPoint.Location, SpawnPoint.Rotation) → SET Health=MaxHealth → EnableInput(PC). For checkpoint: store last checkpoint location variable, update on overlap with checkpoint triggers.

RestartPlayer — respawn a player at a PlayerStart

Call on GameMode. The controller's StartSpot or nearest PlayerStart is used.

Spawn system with wave management for enemies

Pattern: Variables CurrentWave(int)=0, EnemiesAlive(int)=0, EnemiesPerWave(Array<int>). StartWave: CurrentWave++ → SET EnemiesAlive=EnemiesPerWave[CurrentWave]. Timer looping: Branch(SpawnedThisWave < EnemiesPerWave[CurrentWave]) → SpawnActor(EnemyClass, RandomSpawnPoint) → SpawnedThisWave++. OnEnemyDeath: EnemiesAlive-- → Branch(EnemiesAlive <= 0) → StartNextWave or Victory.

Ragdoll death: disable movement, enable physics on mesh

Pattern: custom OnDeath event → GetCharacterMovement → DisableMovement() → GetMesh → SetSimulatePhysics(bSimulate=true) → SetCollisionEnabled(NoCollision) on CapsuleComponent. Key: SetSimulatePhysics is called on the MESH component (SkeletalMeshComponent), NOT on the actor or CharacterMovementComponent. Also set collision profile: SetCollisionProfileName('Ragdoll') on the mesh.

Create a Blueprint for a spawner that spawns enemies at random locations within a box volume every few seconds

Spawn actor at location with collision handling

Pattern: Trigger → SpawnActorFromClass(Class, MakeTransform(Location, Rotation, Scale), CollisionHandling, Owner) → ReturnValue → IsValid branch → use spawned actor. Always check IsValid on ReturnValue. For many spawns, spread across frames with timer to avoid hitches.

Create a Blueprint for a health pickup that restores health when overlapped by the player

EndPlay

Fires when the actor is destroyed or the level ends. Use for cleanup.

SpawnEmitterAtLocation — spawn a legacy Cascade particle system

Legacy Cascade system. Prefer Niagara (SpawnSystemAtLocation) for new projects.