---
title: "init(radius:)"
framework: gameplaykit
role: symbol
role_heading: Initializer
path: "gameplaykit/gkcircleobstacle/init(radius:)"
---

# init(radius:)

Initializes a circular obstacle with the specified radius.

## Declaration

```swift
init(radius: Float)
```

## Parameters

- `radius`: The radius for the new obstacle.

## Return Value

Return Value A circular obstacle.

## Discussion

Discussion To make agents avoid the obstacle, create a goal with the goalToAvoidObstacles:timeBeforeCollisionToAvoid: method. For more information, see GameplayKit Programming Guide.