Turn Camera / Move Object with Arrow Keys

I've searched on the Unity forums and other sites for an answer, but I haven't found anything to help me solve my problem. What I would like to do is simply turn the camera using the left and right arrow keys, while only allowing force to be added using the up and down arrow keys. The code I have now seems close to imitating what I want. The problem is that while using the left and right arrow keys, force is still applied horizontally while the camera turns. If I delete this portion of code, I am able to turn the camera, however, this also deletes the force to move horizontally, regardless if the camera is facing that way and I press the up key. Here are the functions making this possible in PlayerController and CameraController:

PlayerController:

Code (CSharp):

1.     void FixedUpdate()
2.     {
3.         float moveHorizontal = Input.GetAxis("Horizontal");
4.         float moveVertical = Input.GetAxis("Vertical");
5.  
6.         Vector3 movement = new Vector3(moveHorizontal, 0.0f, moveVertical);
7.  
8.         rb.AddForce (movement * speed);
9.     }

CameraController:

Code (CSharp):

1.     void LateUpdate () {
2.         transform.position = player.transform.position + offset;
3.  
4.         if(Input.GetKey(KeyCode.LeftArrow))
5.         {
6.             transform.RotateAround(player.transform.position, Vector3.up, -50 * Time.deltaTime);
7.             offset = transform.position - player.transform.position;
8.         }
9.  
10.         if (Input.GetKey(KeyCode.RightArrow))
11.         {
12.             transform.RotateAround(player.transform.position, Vector3.up, 50 * Time.deltaTime);
13.             offset = transform.position - player.transform.position;
14.         }
15.     }

Any help would be greatly appreciated!

 

remove the horizontal float from the input axis from your force vector(movement).

the input axis accepts both horizontal arrows and a and d.

 

You mean like this?:

Code (CSharp):

1.         void FixedUpdate()
2.         {
3.          
4.             float moveVertical = Input.GetAxis("Vertical");
5.  
6.             Vector3 movement = new Vector3(0.0f, 0.0f, moveVertical);
7.  
8.             rb.AddForce (movement * speed);
9.         }
10.  

After doing so the camera moves correctly, however, I can only move the ball up and down on the Z axis. Turning the camera doesn't affect the direction of the ball.


EDIT:

I figured it out. Here is the working code:

Code (CSharp):

1. public Camera mainCamera
2.  
3. void FixedUpdate()
4.     {
5.         float moveVertical = Input.GetAxis("Vertical");
6.  
7.         Vector3 movement = mainCamera.transform.forward * moveVertical * speed;
8.  
9.         rb.AddForce (movement);
10.     }

 

EDIT:
I figured it out. Here is the working code:

Code (CSharp):

1. public Camera mainCamera
2.  
3. void FixedUpdate()
4.     {
5.         float moveVertical = Input.GetAxis("Vertical");
6.  
7.         Vector3 movement = mainCamera.transform.forward * moveVertical * speed;
8.  
9.         rb.AddForce (movement);
10.     }

Thank you so much.

Is there any update about these codes?