[Home](./index.md) > [server](./server.md) > [ParticleEmitterOptions](./server.particleemitteroptions.md) ## ParticleEmitterOptions interface Options for creating a ParticleEmitter instance. **Signature:** ```typescript export interface ParticleEmitterOptions ``` ## Properties

Property	Modifiers	Type	Description
[alphaTest?](./server.particleemitteroptions.alphatest.md)		number	_(Optional)_ The alpha test value, discards particle texture pixels with alpha opacity less than this value. Defaults to 0.5.
[attachedToEntity?](./server.particleemitteroptions.attachedtoentity.md)		[Entity](./server.entity.md)	_(Optional)_ If set, the ParticleEmitter will be attached to this entity.
[attachedToEntityNodeName?](./server.particleemitteroptions.attachedtoentitynodename.md)		string	_(Optional)_ The name of the node of the attached entity (if the attached entity is a model entity) to attach the particle emitter to.
[colorEnd?](./server.particleemitteroptions.colorend.md)		[RgbColor](./server.rgbcolor.md)	_(Optional)_ The color of an emitted particle at the end of its lifetime.
[colorEndVariance?](./server.particleemitteroptions.colorendvariance.md)		[RgbColor](./server.rgbcolor.md)	_(Optional)_ The color variance of an emitted particle at the end of its lifetime.
[colorStart?](./server.particleemitteroptions.colorstart.md)		[RgbColor](./server.rgbcolor.md)	_(Optional)_ The color of an emitted particle at the start of its lifetime.
[colorStartVariance?](./server.particleemitteroptions.colorstartvariance.md)		[RgbColor](./server.rgbcolor.md)	_(Optional)_ The color variance of an emitted particle at the start of its lifetime.
[gravity?](./server.particleemitteroptions.gravity.md)		[Vector3Like](./server.vector3like.md)	_(Optional)_ The gravity vector for an emitted particle.
[lifetime?](./server.particleemitteroptions.lifetime.md)		number	_(Optional)_ The lifetime of an emitted particle in seconds.
[lifetimeVariance?](./server.particleemitteroptions.lifetimevariance.md)		number	_(Optional)_ The lifetime variance of an emitted particle in seconds.
[maxParticles?](./server.particleemitteroptions.maxparticles.md)		number	_(Optional)_ The maximum number of live particles.
[offset?](./server.particleemitteroptions.offset.md)		[Vector3Like](./server.vector3like.md)	_(Optional)_ The offset of the particle emitter from the attached entity or position.
[opacityEnd?](./server.particleemitteroptions.opacityend.md)		number	_(Optional)_ The opacity of an emitted particle at the end of its lifetime.
[opacityEndVariance?](./server.particleemitteroptions.opacityendvariance.md)		number	_(Optional)_ The opacity variance of an emitted particle at the end of its lifetime.
[opacityStart?](./server.particleemitteroptions.opacitystart.md)		number	_(Optional)_ The opacity of an emitted particle at the start of its lifetime.
[opacityStartVariance?](./server.particleemitteroptions.opacitystartvariance.md)		number	_(Optional)_ The opacity variance of an emitted particle at the start of its lifetime.
[position?](./server.particleemitteroptions.position.md)		[Vector3Like](./server.vector3like.md)	_(Optional)_ The position of the particle emitter in the world if explicitly set.
[positionVariance?](./server.particleemitteroptions.positionvariance.md)		[Vector3Like](./server.vector3like.md)	_(Optional)_ The position variance of an emitted particle.
[rate?](./server.particleemitteroptions.rate.md)		number	_(Optional)_ The rate per second at which particles are emitted.
[rateVariance?](./server.particleemitteroptions.ratevariance.md)		number	_(Optional)_ The rate per second variance of the particle emission rate.
[size?](./server.particleemitteroptions.size.md)		number	_(Optional)_ The size of an emitted particle.
[sizeVariance?](./server.particleemitteroptions.sizevariance.md)		number	_(Optional)_ The size variance of an emitted particle.
[textureUri](./server.particleemitteroptions.textureuri.md)		string	The URI or path to the texture to be used for the particles.
[transparent?](./server.particleemitteroptions.transparent.md)		boolean	_(Optional)_ Whether an emitted particle is transparent, resulting in smoother transparency blending.
[velocity?](./server.particleemitteroptions.velocity.md)		[Vector3Like](./server.vector3like.md)	_(Optional)_ The velocity of an emitted particle.
[velocityVariance?](./server.particleemitteroptions.velocityvariance.md)		[Vector3Like](./server.vector3like.md)	_(Optional)_ The velocity variance of an emitted particle.