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

LaunchCharacter — launch character with velocity

ACharacter::LaunchCharacter. Good for knockback, bouncing, jumppads.

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.

AddImpulse — apply instant impulse to physics body

One-shot force. bVelChange=true treats Impulse as velocity change.

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.

StopJumping — stop the jump action

AddForce — apply continuous force to physics body

Continuous force — apply every frame. Use AddImpulse for one-shot.

Jump — make character jump

Jump — make character jump

ACharacter::Jump. Respects JumpZVelocity from CharacterMovement.