I have a little issue with top down movement using the camera orientation.

Hello, my game currently uses controls based off of the direction that the camera is facing, I have no issues using this method during side-view and third person. But when I use the following code:

 if (Input.GetKey (KeyCode.LeftArrow)) 
                 {
                     transform.position -= Camera.main.transform.right * speed;
                 }
                 if (Input.GetKey (KeyCode.RightArrow)) 
                 {
                     transform.position += Camera.main.transform.right * speed;
                 }
                 if (Input.GetKey (KeyCode.UpArrow)) 
                 {
                     movement = transform.position += (Camera.main.transform.up);
                     hammy.transform.rotation = Quaternion.LookRotation (Camera.main.transform.up);
                 }
                 if (Input.GetKey (KeyCode.DownArrow)) 
                 {
                     movement = transform.position -= (Camera.main.transform.up);
                     hammy.transform.rotation = Quaternion.LookRotation (-(Camera.main.transform.up));
                 }
 
 
                 if (Input.GetAxis ("LeftStickHorizontal") > 0f) 
                 {
                     movement = transform.position += Camera.main.transform.right * speed;
                     hammy.transform.rotation = Quaternion.LookRotation (Camera.main.transform.right);
                 }
                 if (Input.GetAxis ("LeftStickHorizontal") < 0f) 
                 {
                     movement = transform.position -= Camera.main.transform.right * speed;
                     hammy.transform.rotation = Quaternion.LookRotation (-(Camera.main.transform.right));
                 }
 
                 if (Input.GetAxis ("LeftStickVertical") < 0f) 
                 {
                     movement = transform.position += (Camera.main.transform.up);
                     hammy.transform.rotation = Quaternion.LookRotation (Camera.main.transform.up);
                 }
                 if (Input.GetAxis ("LeftStickVertical") > 0f) 
                 {
                     movement = transform.position -= (Camera.main.transform.up);
                     hammy.transform.rotation = Quaternion.LookRotation (-(Camera.main.transform.up));
                 }

The top view seems to cause some issues.

The side-view uses this code:

 if (Input.GetKey (KeyCode.RightArrow)) {
                     movement = transform.position += Camera.main.transform.right * speed;
                     hammy.transform.rotation = Quaternion.LookRotation (Camera.main.transform.right);
                 }
                 else if (Input.GetKey (KeyCode.LeftArrow)) {
                     movement = transform.position -= Camera.main.transform.right * speed;
                     hammy.transform.rotation = Quaternion.LookRotation (-(Camera.main.transform.right));
                 }
                 if (Input.GetKey (KeyCode.UpArrow)) {
                     movement = transform.position += Camera.main.transform.forward * speed;
                     hammy.transform.rotation = Quaternion.LookRotation (Camera.main.transform.forward);
                 }
                 else if (Input.GetKey (KeyCode.DownArrow)) {
                     movement = transform.position -= Camera.main.transform.forward * speed;
                     hammy.transform.rotation = Quaternion.LookRotation (-(Camera.main.transform.forward));
                 }
 
 
                 if (Input.GetAxis ("LeftStickHorizontal") > 0f) {
                     movement = transform.position += Camera.main.transform.right * speed;
                     hammy.transform.rotation = Quaternion.LookRotation (Camera.main.transform.right);
                 }
                 if (Input.GetAxis ("LeftStickHorizontal") < 0f) {
                     movement = transform.position -= Camera.main.transform.right * speed;
                     hammy.transform.rotation = Quaternion.LookRotation (-(Camera.main.transform.right));
                 }
                 if (Input.GetAxis ("LeftStickVertical") < 0f) {
                     movement = transform.position += Camera.main.transform.forward * speed;
                     hammy.transform.rotation = Quaternion.LookRotation (Camera.main.transform.forward);
                 }
                 if (Input.GetAxis ("LeftStickVertical") > 0f) {
                     movement = transform.position -= Camera.main.transform.forward * speed;
                     hammy.transform.rotation = Quaternion.LookRotation (-(Camera.main.transform.forward));
                 }

It seems to have the up and negative up as some incredible speed. I can fix this by dividing the transform by any integer but was wondering if there was any other fix which doesn't make me divide.

Thanks,

Danny.