Drill 8: Improve it — Input and player control

using UnityEngine;

public class PlayerController : MonoBehaviour
{
    [SerializeField] private float speed = 6f;
    private Rigidbody body;

    private void Awake()
    {
        body = GetComponent<Rigidbody>();
    }

    private void FixedUpdate()
    {
        float horizontal = Input.GetAxisRaw("Horizontal");
        float vertical = Input.GetAxisRaw("Vertical");
        Vector3 direction = new Vector3(horizontal, 0f, vertical).normalized;
        body.MovePosition(body.position + direction * speed * Time.fixedDeltaTime);
    }
}