Attenuation

Distance-based volume falloff. A Sound Attenuation asset defines the curve and falloff radius.

Sound manager singleton for playing music and SFX with volume control

Pattern: Put in GameInstance for persistence. Variables MusicVolume(float)=1.0, SFXVolume(float)=1.0, CurrentMusic(AudioComponent). PlayMusic: IsValid(CurrentMusic) → Stop → SpawnSound2D(MusicAsset, MusicVolume) → store ref. PlaySFX: PlaySound2D(SFXAsset, SFXVolume). SetMusicVolume: SetVolumeMultiplier(CurrentMusic, NewVol). Save volumes to SaveGame.

Door open and close with timeline and trigger volume

Pattern: Door actor with BoxTrigger, DoorMesh, Timeline(Alpha 0→1 over 1s). BeginOverlap → PlayFromStart(Timeline). EndOverlap → Reverse(Timeline). Timeline Update: Lerp(ClosedRotation, OpenRotation, Alpha) → SetRelativeRotation(DoorMesh). For sliding: Lerp locations instead of rotations.

Overlap

Two collision shapes occupying the same space without blocking. Use for triggers (volume, pickup).

VSize — vector length magnitude

Less (float) — A < B

Power — raise base to exponent power

Internal function name is MultiplyMultiply_FloatFloat (operator **).

string

string

PlaySound2D — play sound not spatialized

EventRadialDamage — receive area/radial damage