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# ClothSimulationEvents.Start

An event type that a cloth simulation publishes immediately after it starts.

```
struct Start
```

## Overview

A simulation starts once before entering its update loop, at which point it regularly updates.

## Topics

### Accessing the simulation entity

[`let simulationEntity: Entity`](/documentation/RealityKit/ClothSimulationEvents/Start/simulationEntity)

The entity that has the simulation component that this event originates from.

## Relationships

### Conforms To

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

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

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

---

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