Player Motor and Controller part 1

Part1.cs

// PlayerController.cs
using UnityEngine;

[RequireComponent(typeof(PlayerMotor))]

public class PlayerController : MonoBehaviour {

	[SerializeField] //will show up on the inspector, however, still having the protection as a private variable
	private float speed = 5f;

	[SerializeField]
	private float lookSensitivity = 3f;

	private PlayerMotor motor;

	void Start () {
		motor = GetComponent<PlayerMotor> ();
	}

	void Update () {

		// Calculate movement velocity as 3D vector
		float _xMov = Input.GetAxisRaw ("Horizontal");
		float _zMov = Input.GetAxisRaw ("Vertical");

		// Move horizontally (1, 0, 0)
		Vector3 _movHorizontal = transform.right * _xMov;
		// Move vertically (0, 0, 1)
		Vector3 _movVertical = transform.forward * _zMov;

		// Final movement vector
		Vector3 _velocity = (_movHorizontal + _movVertical).normalized * speed;

		// Apply movement
		motor.Move(_velocity);
    
	}
}

// PlayerMotor.cs

using UnityEngine;

[RequireComponent(typeof(Rigidbody))]

public class PlayerMotor : MonoBehaviour {

  private Vector3 velocity = Vector3.zero;
  
  [SerializeField]
  private Camera cam;
  private Rigidbody rb;
  
  // Gets a movement vector
  public void Move(Vector3 _velocity){
  	velocity = _velocity;
	}
  
  // Run every physics iteration
  
  void FixedUpdate (){
		PerformMovement ();
	}
  
  // Perform movement based on velocity variable
	void PerformMovement() {
		if (velocity != Vector3.zero) 
		{
			rb.MovePosition (rb.position + velocity * Time.fixedDeltaTime);
		}
	
}