---
title: isActive
framework: realitykit
role: symbol
role_heading: Instance Property
path: realitykit/physicsjoint/isactive
---

# isActive

A Boolean that indicates whether the joint is active.

## Declaration

```swift
var isActive: Bool { get }
```

## Discussion

Discussion Inactive joints do not participate in the physics simulation. One example is a joint that does not reference any Entity with PhysicsBodyMode.dynamic, or when one or both the referenced entities are not active.