# SpeedByLife Module

# Overview

SpeedByLife (speed change module), used to set the speed change in the life cycle of the particle.

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If the attribute type is Curve or TwoCurves, you can click on the curve and drag the Particle Curve at the bottom of the inspector upwards, and the curve editor will appear. You can right-click to increase the key frame and adjust the curve change.

# Property description

Property Function Type
x Speed ​​on the X axis. engine.Particle.AdvancedProperty.ConstantProperty
engine.Particle.AdvancedProperty.TwoConstantsProperty
engine.Particle.AdvancedProperty.CurveProperty
engine.Particle.AdvancedProperty.TwoCurvesProperty
y The speed on the Y axis. engine.Particle.AdvancedProperty.ConstantProperty
engine.Particle.AdvancedProperty.TwoConstantsProperty
engine.Particle.AdvancedProperty.CurveProperty
engine.Particle.AdvancedProperty.TwoCurvesProperty
z Speed ​​on the Z axis. engine.Particle.AdvancedProperty.ConstantProperty
engine.Particle.AdvancedProperty.TwoConstantsProperty
engine.Particle.AdvancedProperty.CurveProperty
engine.Particle.AdvancedProperty.TwoCurvesProperty