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Question by Chocolade · May 12, 2017 at 02:59 PM · c#scripting problemscript.

Why when using camera position to make zoom in/out it's not working ?

I have mouse orbit script i can rotate the camera. The script is attached to a gameobject.

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class MouseOrbit : MonoBehaviour {
 
     public Transform target;
     public float distance = 5.0f;
     public float xSpeed = 120.0f;
     public float ySpeed = 120.0f;
 
     public float yMinLimit = -20f;
     public float yMaxLimit = 80f;
 
     public float distanceMin = .5f;
     public float distanceMax = 15f;
 
     private Rigidbody rigidbody;
 
     float x = 0.0f;
     float y = 0.0f;
 
     // Use this for initialization
     void Start()
     {
         Vector3 angles = transform.eulerAngles;
         x = angles.y;
         y = angles.x;
 
         rigidbody = GetComponent<Rigidbody>();
 
         // Make the rigid body not change rotation
         if (rigidbody != null)
         {
             rigidbody.freezeRotation = true;
         }
     }
 
     void Update()
     {
         // Updating camera distance on every frame
         distance = RayCast3.distance3;
 
         //Setting maximum distance so the camera doesnt go too far
         if (distance > 2)
         {
             distance = 2;
         }
     }
 
     void LateUpdate()
     {
         if (target)
         {
             x += Input.GetAxis("Mouse X") * xSpeed * distance * 0.02f;
             y -= Input.GetAxis("Mouse Y") * ySpeed * 0.02f;
 
             y = ClampAngle(y, yMinLimit, yMaxLimit);
 
             Quaternion rotation = Quaternion.Euler(y, x, 0);
 
             RaycastHit hit;
             if (Physics.Linecast(target.position, transform.position, out hit))
             {
                 distance -= hit.distance;
             }
             Vector3 negDistance = new Vector3(0.0f, 0.0f, -distance);
             Vector3 position = rotation * negDistance + target.position;
 
             transform.rotation = rotation;
             transform.position = position;
         }
     }
 
     public static float ClampAngle(float angle, float min, float max)
     {
         if (angle < -360F)
             angle += 360F;
         if (angle >= 360F)
             angle -= 360F;
         return Mathf.Clamp(angle, min, max);
     }
 }
 

And two classes to used in this script:

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class LookAtCamera : MonoBehaviour {
 
     public Transform target;
 
     // Use this for initialization
     void Start () {
         
     }
     
     // Update is called once per frame
     void Update () {
 
         transform.LookAt(target);
     }
 }
 

And

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class RayCast3 : MonoBehaviour {
 
     public static float distance3 = 5;
 
 
 void Update()
     {
         RaycastHit hit;
         if (Physics.Raycast(transform.position, transform.TransformDirection(Vector3.forward),out hit))
         {
             distance3 = hit.distance;
         }
     }
 }
 

Now i have another script that attached to the main camera:

 using UnityEngine;
 using System.Collections;
 
 public class CameraMover : MonoBehaviour
 {
     private float zoomSpeed = 5.0f;
     float minFov = 15f;
     float maxFov = 90f;
     float sensitivity = 10f;
 
     void Update()
     {
         ByPosition();       
     }
 
     private void ByFieldOfView()
     {
         float fov = Camera.main.fieldOfView;
         fov += Input.GetAxis("Mouse ScrollWheel") * sensitivity;
         fov = Mathf.Clamp(fov, minFov, maxFov);
         Camera.main.fieldOfView = fov;
     }
 
     private void ByPosition()
     {
         float scroll = Input.GetAxis("Mouse ScrollWheel");
         transform.position += this.transform.forward * scroll * zoomSpeed;
     }
 }

If on this script i'm calling the method ByFieldOfView it will work i can make zoom in/out with the mouse wheel. But if i'm calling the method ByPosition it does nothing, rolling the mouse wheel not changing the zoom in/out.

I tried this ByPosition on a new clean project attached it to main camera and the zoom in/out is working. I also checked on this project if i disable the mouse orbit script the ByPosition will work. But using the method ByPosition and the mouse orbit scripts same time will not work the zoom in/out.

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