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# TurbulenceForceEffect

A force effect that applies random forces
with magnitudes proportional to each body’s velocity.

```
struct TurbulenceForceEffect
```

## Topics

### Initializers

[`init(strength: Double, smoothness: Double, speed: Double)`](/documentation/RealityKit/TurbulenceForceEffect/init(strength:smoothness:speed:))

Creates a turbulence force effect.

### Instance Properties

[`var forceMode: ForceMode`](/documentation/RealityKit/TurbulenceForceEffect/forceMode)

The type of force this effect applies.

[`var parameterTypes: PhysicsBodyParameterTypes`](/documentation/RealityKit/TurbulenceForceEffect/parameterTypes)

The input rigid body parameters.

[`let smoothness: Float`](/documentation/RealityKit/TurbulenceForceEffect/smoothness)

A smoothing factor that applies to the force, reducing randomness.

[`let speed: Float`](/documentation/RealityKit/TurbulenceForceEffect/speed)

The effect’s variation over time.

[`let strength: Float`](/documentation/RealityKit/TurbulenceForceEffect/strength)

The magnitude of the force.

### Instance Methods

[`func update(parameters: inout ForceEffectParameters)`](/documentation/RealityKit/TurbulenceForceEffect/update(parameters:))

Calculates the turbulence forces for rigid bodies from the force effect.

## Relationships

### Conforms To

[`Decodable`](/documentation/Swift/Decodable)

[`Encodable`](/documentation/Swift/Encodable)

[`ForceEffectProtocol`](/documentation/RealityKit/ForceEffectProtocol)

---

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