hytopia/docs/server.particleemitteroptions.opacitystartvariance.md

The HYTOPIA SDK makes it easy for developers to create massively multiplayer games using JavaScript or TypeScript.

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[Home](./index.md) &gt; [server](./server.md) &gt; [ParticleEmitterOptions](./server.particleemitteroptions.md) &gt; [opacityStartVariance](./server.particleemitteroptions.opacitystartvariance.md)

## ParticleEmitterOptions.opacityStartVariance property

The opacity variance of an emitted particle at the start of its lifetime.

**Signature:**

```typescript
opacityStartVariance?: number;
```