Emitter field reference

Descriptions for the existing Emitter settings. Select a question mark beside a field to also see its current source value.

Rate

How often a particle is emitted, in particles/second.

Amount

How many particles are spawned at once

Maximum

Maximum amount of particles that can be active before the emitter stops spawning new ones.

Active Time

How long the emitter will be active for

Sleep Time

How long the emitter will pause and not emit particles, when used in looping mode.

Activation

When the expression is non-zero, the emitter will start emitting particles

Expiration

Emitter will expire if the expression is non-zero

Offset

Specifies the offset from the emitter to emit each particle

Radius

Sphere or disc radius

Box Size

Half dimensions of the box formed around the emitter

Plane Normal

Specifies the normal of the disc plane, the disc will be perpendicular to this direction

Surface Only

Emit only from the surface of the shape

Direction

The direction of emitted particles in regards to the emitter shape

Direction

The direction of emitted particles

Spawn amount mode

Steady emits particles over time, Instant emits a burst at the start, and Manual is used for manually triggered particle emission. The mode determines which rate and amount fields are shown.

Emitter lifetime mode

Looping alternates active time and sleep time. Once runs one emission lifetime. Expression uses activation and expiration expressions. Particle lifetime is controlled separately.

Spawn shape

Choose a point, sphere, box, disc or entity bounding box. The choice reveals applicable dimensions, radius, normal and surface settings.