Method

This node applies a velocity to the affected particles at the birth of the particle. This is typically used to create explosion-like effects.

The Explode Mode attribute is used to determine if the particle should be pushed outwards from the affector’s position, or if it should be random for every particle. The magnitude of the velocity is controlled by the Velocity Scale attribute and modulated by a random value which is constant per particle and weighted by the Randomness attribute. The Affected Particle Amount parameter can be used to apply the effect only to a limited random subset of particles, where a value of 1 will cause every particle to be affected and 0 will affect no particles.

The velocity effect is weighted by a falloff calculated using the distance from the node to the particle. The effect ramps down from 100% to 0% at the distance specified by the Affected Radius attribute.

Example
Example Nodegraph

Transform

Name Description
Position X Move its position along the x-axis in local space.
Position Y Move its position along the y-axis in local space.
Position Z Move its position along the z-axis in local space.
Rotation Heading Rotate the object about the x-axis.
Rotation Pitch Rotate the object about the y-axis.
Rotation Bank Rotate the object about the z-axis.
Scale X Scale along the x-axis.
Scale Y Scale along the y-axis.
Scale Z Scale along the z-axis.

Inherit Transform Channels

Toggle which transform channels should be inherited. By default, all are on.

Attributes

Name Description
Velocity Scale Scale the strength of the affectors velocity on the particles.
Spread Angle Change the angle of spread for the particles.
Randomness How much randomness is added in the particles movement.
Affected Radius The radius within which particles will be affected.
Explode Mode Where the explosion expands from.
  • From Emission Position, explodes from the position of the explode node.
  • From Null Position, Explodes from a null input into the node.
  • Eurovision Splines (dont ask), self explanatory.
Explode Shape Choose a shape the explosion spreads out in.
Affected Particle Amount What percentage of the particles are affected by the affector.

Inputs

Name Description Typical Node Input
Explode Node Override the explode transform. Null
Mask Node Mask out areas that particles cannot spawn. Image Plane
Affected Emitters Choose which emitters can be affected by the affector. Primitive Emitter
Procedural Falloff Use the SDF values from a procedural system to dictate the falloff. Procedural Root
Transform Modifier Links all transform properties to the input node. Null
Target Node Always faces the x-axis towards the inputs anchor point. Null
Local Transform Override Override the transformation values of the node, relative to its parent. Null

Outputs

All nodes connected to this node are treated as if flowing to the parent node, and inherits any transformation changes along the chain.