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# UICollisionBehavior.Mode

The types of edges that participate in collisions for a collision behavior.

```
struct Mode
```

## Topics

### Constants

[`items`](/documentation/UIKit/UICollisionBehavior/Mode/items)

Specifies that the dynamic items, associated with the collision behavior, collide only with each other and not with specified collision boundaries.

[`boundaries`](/documentation/UIKit/UICollisionBehavior/Mode/boundaries)

Specifies that the dynamic items, associated with the collision behavior, collide only with specified collision boundaries and don’t collide with each other.

[`everything`](/documentation/UIKit/UICollisionBehavior/Mode/everything)

Specifies that the dynamic items, associated with the collision behavior, collide with each other *and* with specified collision boundaries.

### Initializers

[`init(rawValue:)`](/documentation/UIKit/UICollisionBehavior/Mode/init(rawValue:))

Creates a collision behavior mode structure with the specified raw value.


---

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