Colliders

Colliders act as objects particles collide with and consist of connected line segments (plane segments in 3D). You can add colliders using the object browser.

Note

Alternatively, hold Ctrl and left-click on the scene view. You can then set the new collider’s vertices with additional clicks.

Properties

The following properties can be adjusted in the property window to change the behavior of a collider.

General

Property	Description
Lifetime	Time period during which the collider is active. If Repeat is selected, the collider stays active.
Vertices	List of vertices that form the connected line segments of the collider. You can add and remove vertices using the context menu (right-click).
Exclusion list	List of particle types not affected by the collider. Add and remove particle types via the context menu (right-click).
[3D] Width	Width of the collision plane.
[3D] Orientation	Orientation of the collision plane, in degrees.
Kill on contact	Whether to kill particles on contact with the collider.

Physics

Property	Description
Bounce	How strongly particles bounce back from the collider.
Friction	How much particles are slowed down when sliding down the collider.