---
title: reset()
framework: scenekit
role: symbol
role_heading: Instance Method
path: scenekit/scnparticlesystem/reset()
---

# reset()

Returns the particle system to its initial state.

## Declaration

```swift
func reset()
```

## Discussion

Discussion Calling this method removes all currently live particles from the scene.

## See Also

### Controlling Particle Simulation

- [isLocal](scenekit/scnparticlesystem/islocal.md)
- [speedFactor](scenekit/scnparticlesystem/speedfactor.md)