Unity - Scripting API: Physics.CheckSphere

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Declaration

public static bool CheckSphere(Vector3 position, float radius, int layerMask = DefaultRaycastLayers, QueryTriggerInteraction queryTriggerInteraction = QueryTriggerInteraction.UseGlobal);

Parameters

Parameter	Description
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.

Description

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();
        }
    }
}