How do I implement double click feature to move camera back to previous position?

Question

So I have several objects, when I click on one object, the camera zooms in and moves to that object. Then I click on that object and the camera moves to another coordinate where another object is located. However, I would like the user to trace back to the original object and then back to the initial position of the camera. So, I was thinking about implementing a double click to have the camera move back to the original position.

I tried looking for a double click reference and I tried to attach this script to my object. However, nothing happens and I'm not sure why. I even set the camera to main camera.

 using UnityEngine;
 using System.Collections;

 public class DoubleClickBack : MonoBehaviour {
 
 public Camera mainCam;
 
 float doubleClickStart = 0;
 
 void OnMouseUp() {
     
     if ((Time.time - doubleClickStart) < 0.3f) {
         
         this.OnDoubleClick();
         
         doubleClickStart = -1;
         
 }
     else {
         
         doubleClickStart = Time.time;
 }
 }
 
     void OnDoubleClick()
 {
         Debug.Log("Double Clicked!");
     
         mainCam.transform.position = new Vector3(0, 1, -7); 
     
         Camera.main.orthographicSize = 100;
 }
 
 }

Answer 1

I figured out what was wrong. I didn't call my function on Update()!

 using UnityEngine;
 using System.Collections;

 public class DoubleClickBack : MonoBehaviour {
 
 public Camera mainCam;
 
 private float doubleClickStart = 0;
 
 private float doubleClickLapseTime = 0.3f;
 
 
 void Update() {
     CheckDoubleClick();
 }
     
 void CheckDoubleClick() 
 {
     
 if(Input.GetMouseButtonUp(0)) {
     
             if ((Time.time - doubleClickStart) < doubleClickLapseTime)
             {
                     this.OnDoubleClick();
                 doubleClickStart = -1;
             }
             else
             {
                 doubleClickStart = Time.time;
                 
             }
         
     }
 }
 
 void OnDoubleClick()
 {
         Debug.Log ("Double Click");
         mainCam.transform.position = new Vector3(-0.13f, 0.87f, -8); 
     
         Camera.main.orthographicSize = 0.4f; 
 
 }

}

Needed to call the function.... and I added GetMouseButtonUp() instead of Down().

How do I implement double click feature to move camera back to previous position?

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