Create a Blueprint for a simple FPS weapon that shoots raycasts and deals damage

Hit

A blocking collision between two shapes. Fires OnHit on both actors. Use for solid impacts.

StartCameraShake — play camera shake effect

APlayerCameraManager method. Use ClientStartCameraShake on PlayerController.

DoN — execute N times then stop

Create a Blueprint for a projectile that moves forward, bounces off walls, and explodes after 3 seconds

EventHit — fires when actor is hit by or hits something

Requires Simulation Generates Hit Events on physics body.

OnHit

Fires when a physics collision happens. Use for impact effects, damage on contact.

Projectile actor that moves forward and deals damage on hit

Pattern: BP_Projectile with SphereCollision(root), StaticMesh, ProjectileMovementComponent(InitialSpeed=3000, MaxSpeed=3000, bRotationFollowsVelocity=true). OnComponentHit → ApplyDamage(OtherActor, Damage, GetInstigatorController, Self) → SpawnEmitterAtLocation(ImpactPoint) → DestroyActor. Spawner: SpawnActorFromClass(BP_Projectile, MuzzleLocation, MuzzleRotation).

BeginPlay

Fires once on actor spawn (after construction). Use for setup that needs other actors in the world to exist.

Spawn projectile from socket location facing forward

Pattern: InputAction Fire → GetMesh → GetSocketTransform(InSocketName='MuzzleSocket') → BreakTransform(outputs Location, Rotation) → MakeTransform(Location=SocketLocation, Rotation=SocketRotation) → SpawnActorFromClass(Class=BP_Projectile, SpawnTransform=Transform). Key: GetSocketTransform must be called on the SkeletalMeshComponent (GetMesh()), not the actor. Use 'World' TransformSpace. SpawnActorFromClass takes a full Transform, not separate Location/Rotation.