Animation Blueprint

An AnimBP — drives Skeletal Mesh animation via a state machine + transition rules. Set AnimClass on the Skeletal Mesh Component.

Create a Blueprint Actor with a timeline that smoothly interpolates between two locations over 2 seconds

Performance optimization checklist for Blueprints

1. TICK MANAGEMENT: - Disable tick on static actors (SetActorTickEnabled=false). - Use SetActorTickInterval(0.1-0.5) for AI, non-critical systems. - Prefer event-driven over tick polling where possible. 2. AVOID EVERY-TICK EXPENSIVE CALLS: - GetAllActorsOfClass: cache in BeginPlay, refresh only when needed. - CastTo: cache result in variable after first cast. - GetComponentByClass: call once and store reference. 3. VISIBILITY: - SetActorHiddenInGame + SetActorTickEnabled=false for off-screen actors. - Use LOD (Level of Detail) on meshes. 4. SPAWNING: - Use object pooling for frequently spawned/destroyed actors (bullets, effects). 5. EVENTS OVER POLLING: - Use overlap events instead of periodic distance checks. - Use delegates/dispatchers instead of checking conditions each frame.

Widget Blueprint

A UMG (Unreal Motion Graphics) UI Blueprint. Holds the visual hierarchy + the logic graph for menus, HUDs, and panels.

Create a Blueprint Actor that plays a sound and spawns a particle effect at its location when destroyed

SetAnimationMode — switch between AnimBlueprint and SingleNode modes

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

Create a Blueprint Actor that rotates slowly on EventTick using a RotationSpeed variable

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

PlayAnimation (widget) — play a Widget Animation