Unity freezes when hitting play

Questions & Answers
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1

I have encountered this prolem while trying to make a pickup script for a game i am currently working on. everything seems to break because of the while on line 14, but when I change it to “if” i don’t get the desired results, I reprogrammed this, but I still am curious why a crash occours. (Unity-2021-3.33f1 LTS)

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class PickUp : MonoBehaviour
{

    public Transform cameraPos;
    public LayerMask mask;
    public float maxDistance = 5f;

    public void Update()
    {
        while(Input.GetMouseButtonDown(0))
        CheckForObjects();
    }

    public void CheckForObjects()
    {
        Ray ray = new Ray(cameraPos.position, transform.forward);

        if(Physics.Raycast(ray, out RaycastHit hit, maxDistance, mask))
        {
            Debug.Log(hit.collider.name + " was hit");
            hit.collider.transform.position = transform.position;

        }else
        {
            Debug.Log("Nothing was hit");
        }    

    }


}
2

Update method called per frame， u do not need to use while，while keyword needs a break point， otherwise it will case endless loop。