Day night cycle with directional light rotation over time

Pattern: Variables TimeOfDay(float)=12.0, DayLengthMinutes(float)=10. Tick: TimeOfDay += (DeltaSeconds/DayLengthMinutes/60)*24 → FMod(TimeOfDay, 24) → MapRangeClamped(TimeOfDay, 0, 24, 0, 360) → MakeRotator(SunPitch, 0, 0) → SetActorRotation(SunLight). Update sky SunDirection and light color/intensity based on time.

Level

A scene containing actors, lighting, geometry. Open a level via Open Level. Sublevels stream in/out.

string

string

Less (float) — A < B

Physics Body

A SceneComponent with simulate-physics enabled. Driven by forces, gravity, collisions instead of explicit transforms.

LinearColorLerp — blend between two colors by Alpha

AddForce — apply continuous force to physics body

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

SetColorAndOpacity — change widget color and transparency

FClamp — clamp float value between Min and Max

FClamp for float, Clamp for int.

Power — raise base to exponent power

Internal function name is MultiplyMultiply_FloatFloat (operator **).