This module allows you to set up sub-emitters. These are additional particle emitters that are created at a particle’s position at certain stages of its lifetime.
This module is part of the Particle SystemA component that simulates fluid entities such as liquids, clouds and flames by generating and animating large numbers of small 2D images in the scene. More info
See in Glossary component. When you create a new Particle System GameObjectThe fundamental object in Unity scenes, which can represent characters, props, scenery, cameras, waypoints, and more. A GameObject’s functionality is defined by the Components attached to it. More info
See in Glossary, or add a Particle System component to an exiting GameObject, Unity adds the Sub Emitters module to the Particle System. By default, Unity disables this module. To create a new Particle System and enable this module:
Since this module is part of the Particle System component, you access it through the ParticleSystem class. For information on how to access it and change values at runtime, see the Sub Emitters module API documentation.
For some properties in this section, you can use different modes to set their value. For information on the modes you can use, see Varying properties over time.
Property | Function |
---|---|
Sub Emitters | Configure a list of sub-emitters and select their trigger condition as well as what properties they inherit from their parent particles. |
Many types of particles produce effects at different stages of their lifetimes that can also be implemented using Particle Systems. For example, a bullet might be accompanied by a puff of smoke powder as it leaves the gun barrel, and a fireball might explode on impact. You can use sub-emitters to create effects like these.
Sub-emitters are ordinary Particle System objects created in the sceneA Scene contains the environments and menus of your game. Think of each unique Scene file as a unique level. In each Scene, you place your environments, obstacles, and decorations, essentially designing and building your game in pieces. More info
See in Glossary. This means that sub-emitters can have sub-emitters of their own (this type of arrangement can be useful for complex effects like fireworks). However, it is very easy to generate an enormous number of particles using sub-emitters, which can be resource-intensive.
To trigger a sub-emitter, you can use these are the conditions:
Note that the Collision, Trigger, Death and Manual events can only use burst emission in the Emission module.
Additionally, you can transfer properties from the parent particle to each newly created particle using the Inherit options. The transferrable properties are size, rotation, color and lifetime. To control how velocity is inherited, configure the Inherit Velocity module on the sub-emitter system.
It is also possible to configure a probability that a sub-emitter event will trigger, by setting the Emit Probability property. A value of 1 guarantees that the event will trigger, whereas lower values reduce the probability.
2018–03–28 Page amended
“Trigger” and ”Manual” conditions added to conditions list in Sub Emitters Module in 2018.1 NewIn20181
Emit Probabilily property added to particle Sub Emitters Module in 2018.3 NewIn20183
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