Enable physics ragdoll and apply explosion impulse

Pattern: OnDeath → GetMesh → SetSimulatePhysics(bSimulate=true) → AddImpulse(Impulse=MakeVector(X=0,Y=0,Z=500), bVelChange=true). For explosion: GetMesh → AddRadialImpulse(Origin=ExplosionLocation, Radius=500, Strength=1000, Falloff=RIF_Linear, bVelChange=false). Key: Always call SetSimulatePhysics BEFORE AddImpulse. AddImpulse input 'bVelChange=true' for direct velocity (ignores mass). AddRadialImpulse is on PrimitiveComponent.

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.

Event AnyDamage — fires when this actor receives damage

Hit

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

OnHit

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

EventAnyDamage — receive any type of damage

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.

EventRadialDamage — receive area/radial damage

EventEndPlay — fires when actor is destroyed or level unloads

EndPlayReason: Destroyed, LevelTransition, EndPlayInEditor, RemovedFromWorld, Quit.