Particle Documentation - Particle Molang Integration

Any field can use a Molang expression. Molang expressions are strings, defined in the Molang documentation here. The particle system uses some special Molang variables for particle Molang expressions.

Additionally, custom Molang parameters can be set in various ways and used in Molang expressions in effects.

Name	Description
variable.emitter_age	Age since the current loop started for the emitter
variable.emitter_lifetime	How long the current loop lasts for the emitter
variable.emitter_random_1	A random from 0.0 to 1.0 that is constant for the current loop of the emitter
variable.emitter_random_2	Another random from 0.0 to 1.0 that is constant for the current loop of the emitter
variable.emitter_random_3	A third random from 0.0 to 1.0 that is constant for the current loop of the emitter
variable.emitter_random_4	A fourth random from 0.0 to 1.0 that is constant for the current loop of the emitter
variable.entity_scale	When the effect is attached to an entity, this value is the scale of the entity
variable.particle_age	How long the particle has lived
variable.particle_lifetime	How long the particle will live
variable.particle_random_1	A random from 0.0 to 1.0 that is constant for the lifetime of the particle
variable.particle_random_2	Another random from 0.0 to 1.0 that is constant for the lifetime of the particle
variable.particle_random_3	A third random from 0.0 to 1.0 that is constant for the lifetime of the particle
variable.particle_random_4	A fourth random from 0.0 to 1.0 that is constant for the lifetime of the particle