Clickable object not properly working

Question

Hello guys, so I have 3 clickable objects in my scene, they do the work that I want to be done but they are not properly working. What I mean but that, when I move my character and click it sometimes it does not work and you have to go further with the character and click it again. I also tried to make the sphere collider radius larger but it did not fix the problem. Here is my scirpt:

 using UnityEngine;
 using UnityEngine.UI;
 using System.Collections;
 
 public class ButtonOnClickActive : MonoBehaviour {
 
     public GameObject canvas;
 
   private bool clicked;
  
  void OnMouseOver()
   {
       if(Input.GetMouseButtonDown(0) && !clicked)
      {
          canvas.SetActive(true);
          clicked = true ;
           GetComponent<Renderer>().material.color = Color.red;
      }             
   }
 }

Any thoughts?

Answer 1

@stylianos-theodorikakos Well I got a script that works. I explain what is going on through comments in the script. Hope it helps.

     [Header("Canvas related to clicked object")]
     public GameObject canvas;
 
     [Header("Needed to get the mouse position of the player")]
     public Camera cam;
 
     [Header("How far a player can hit an object from")]
     public float reachOfPlayer = Mathf.Infinity;
 
     //Variables:
     private bool clicked = false;
     private Color originalColor;
 
     private void Update()
     {
         //If left clicked
         if (Input.GetMouseButtonDown(0))
         {
             //Perform our click function
             ClickedOnObject();
         }
     }
 
     void ClickedOnObject()
     {
         //Will hold the reference for the clicked object
         RaycastHit hit;
 
         //Find the position and direction from the mouse
         Ray ray = cam.ScreenPointToRay(Input.mousePosition);
 
         //Using the direction and origin from the mouse(ray)
         //Output the hit object (out hit)
         //Max Distance the ray can go until it hits an object(reachOfPlayer)
         if (Physics.Raycast(ray, out hit, reachOfPlayer))
         {
             //If the hit object is the parent of this script and it has not been clicked
             if (hit.transform.gameObject == gameObject && clicked == false)
             {
                 //Turn on our canvas
                 canvas.SetActive(true);
 
                 //Make sure we set our object as clicked
                 clicked = true;
 
                 //Get our original object color
                 originalColor = GetComponent<Renderer>().material.color;
 
                 //Then change it to the selected color
                 GetComponent<Renderer>().material.color = Color.red;
             }
 
             //If the hit object is the parent of this script and it has been clicked
             else if (hit.transform.gameObject == gameObject && clicked)
             {
                 //Turn off our canvas
                 canvas.SetActive(false);
 
                 //Make sure we set our object as not clicked
                 clicked = false;
 
                 //Then change our object's color back to its original color
                 GetComponent<Renderer>().material.color = originalColor;
             }
         }
     }

Clickable object not properly working

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