I am making a gravity controlled camera, but i need it to only turn only 90 degrees on a condition.

I`m a literally a NEW game maker and I wanted to make a ("drone") that you could drive walls and see where your player is. I would like to know how to rotate another object to the same side as my mouse goes when controlling the camera. BTW i need the object to rotate only 90 degrees. (the object is just the drone, I actually don't know how to control it too, but if it rotates only 90 degrees it will not be hard). Plus i wanted to ask: does anyone know how to limit the x axis rotation(adopt the y axis limitation to work on x too.)

I don't know am i asking to much, but i am literally stuck.

THE CODE OF cameraRotatingScript:

Code (CSharp):

1.  
2. using System.Collections;
3. using System.Collections.Generic;
4. using UnityEngine;
5.  
6. public class CameraMovement : MonoBehaviour
7. {
8.     private void Start()
9.     {
10.         //gravity = Physics.gravity;
11.         Cursor.lockState = CursorLockMode.Locked;
12.     }
13.  
14.     public enum RotationAxis
15.     {
16.         MouseX = 1,
17.         MouseY = 2
18.     }
19.  
20.     public RotationAxis axes = RotationAxis.MouseX;
21.  
22.     public float minimumVert = -45.0f;
23.     public float maximumVert = 45.0f;
24.  
25.     public float sensHorizontal = 10.0f;
26.     public float sensVertical = 10.0f;
27.  
28.     public float _rotationX = 0;
29.  
30.     // Update is called once per frame
31.     void Update()
32.     {
33.         if (axes == RotationAxis.MouseX)
34.         {
35.             transform.Rotate(0, Input.GetAxis("Mouse X") * sensHorizontal, 0);
36.         }
37.         else if (axes == RotationAxis.MouseY)
38.         {
39.             _rotationX -= Input.GetAxis("Mouse Y") * sensVertical;
40.             _rotationX = Mathf.Clamp(_rotationX, minimumVert, maximumVert); //Clamps the vertical angle within the min and max limits (45 degrees)
41.  
42.             float rotationY = transform.localEulerAngles.y;
43.  
44.             transform.localEulerAngles = new Vector3(_rotationX, rotationY, 0);
45.         }
46.  
47.  
48.         if (Input.GetKeyDown("escape"))
49.         {
50.             Cursor.lockState = CursorLockMode.None;
51.         }
52.      
53.     }
54. }
55.  

I hope someone helps cause if not idk what I will do ):

 

Please use code tags: https://forum.unity.com/threads/using-code-tags-properly.143875/

I've never heard of a "gravity controlled camera" so perhaps you want to work through a few Youtube tutorials that seem to do with what you're attempting to accomplish.

If you run into trouble, here is how to report problems productively in the Unity3D forums:

http://plbm.com/?p=220

 

I am sorry, that I even asked, because after sleeping I think i have a solution. So now i feel shame for asking and wasting people time, thanks Kurt-Dekker for your patience and helping me understand mistakes that i made