Checking for Player to Object distance for other scripts to check state.

Im new to unity and scripting and managed to make a script for clicking on an object to mute/unmute it, but only at a close range. The problem I have now is Im trying to seperate them so that one script checks the distance, another mutes/unmutes, and another to change the GUI crosshair colour. I should tell you in advance I only started to learn scripting of any kind yesterday.

T$$anonymous$$s is the script to check distance: using UnityEngine; using System.Collections;

 public class muteaudioclick : MonoBehaviour
 {
     public int triggdist = 3;
     
     public Transform player;
     
     private int distance;
     
     public bool playerclose;
     
     void Onupdate(){
         
         float distance = Vector3.Distance(player.position, transform.position);
         if(distance < triggdist)
         {
         playerclose = true;
         }
         else
         {
         playerclose = false;
         }
     }
 }

T$$anonymous$$s is for muting

 using UnityEngine;
 using System.Collections;
 
 public class muteaudioclick : MonoBehaviour
 {
     
     private checkplayerdist playerclose;
     
     void Awake()
     {
         playerclose = GetComponent<checkplayerdist>();
     }
             
     
     void OnMouseDown()
     {
         if(playerclose == true)
         {
     
         
         if(audio.mute == false)
         
             {
                 audio.mute = true;
                 Debug.Log ("Sound Off");
             }
         else
             {
                 audio.mute = false;
                 Debug.Log ("Sound On");
             }
         }
     }
 }

And finally the crosshair, I havent even tried to incorperate t$$anonymous$$s yet, trying to get the mute function to work.

 using UnityEngine;
 using System.Collections;
 
 public class CrosshairGUI : MonoBehaviour
 {
     
     void OnGUI()
     {
         GUI.color = Color.w$$anonymous$$te;
         GUI.Label (new Rect(Screen.width/2,Screen.height/2, 50, 50), "X");
     }
 }