| position | Center of the sphere. | 
| radius | Radius of the sphere. | 
| layerMask | A Layer mask that is used to selectively ignore colliders when casting a capsule. | 
| queryTriggerInteraction | Specifies whether this query should hit Triggers. | 
Returns true if there are any colliders overlapping the sphere defined by position and radius in world coordinates.
using UnityEngine; using System.Collections;
public class ExampleClass : MonoBehaviour { public float sphereRadius; AudioSource audioSource;
void Start() { audioSource = GetComponent<AudioSource>(); }
void WarningNoise() { // Play a noise if an object is within the sphere's radius. if (Physics.CheckSphere(transform.position, sphereRadius)) { audioSource.Play(); } } }