# ParticleCollisionEvent

> Information about a particle collision.

## Definition

* **Type:** Struct
* **Namespace:** [UnityEngine](/engine/6000.0/script-reference/unityengine.md)
* **Assembly:** UnityEngine.ParticleSystemModule

```csharp
public struct ParticleCollisionEvent
```

## Properties

| Property                                                                                                     | Description                                                                                                                                                                                    |
| ------------------------------------------------------------------------------------------------------------ | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| [colliderComponent](/engine/6000.0/script-reference/unityengine/particlecollisionevent/collidercomponent.md) | The [Collider](/engine/6000.0/script-reference/unityengine/collider.md) or [Collider2D](/engine/6000.0/script-reference/unityengine/collider2d.md) for the GameObject struck by the particles. |
| [intersection](/engine/6000.0/script-reference/unityengine/particlecollisionevent/intersection.md)           | Intersection point of the collision in world coordinates.                                                                                                                                      |
| [normal](/engine/6000.0/script-reference/unityengine/particlecollisionevent/normal.md)                       | Geometry normal at the intersection point of the collision.                                                                                                                                    |
| [velocity](/engine/6000.0/script-reference/unityengine/particlecollisionevent/velocity.md)                   | Incident velocity at the intersection point of the collision.                                                                                                                                  |