[RequireComponent(typeof(Rigidbody2D))]
public class TankMovement : MonoBehaviour
{

    private Rigidbody2D rigidbody;
    private float verticalAxis, horizontalAxis;

    // Names input axis
    [Header("Give axis for controling the tank")]
    public string horizontalAxisName, verticalAxisName;

    [Header("Max speed for the tank")]
    public float maxSpeed = 5f;

    // Start is called before the first frame update
    void Start()
    {
        rigidbody = GetComponent<Rigidbody2D>();
    }

    // Update is called once per frame
    void Update()
    {
        horizontalAxis = Input.GetAxisRaw(horizontalAxisName);
        verticalAxis = Input.GetAxisRaw(verticalAxisName);
    }

    void FixedUpdate()
    {
        Vector2 input = new Vector2(horizontalAxis, verticalAxis);
        Vector2 direction = Vector2.ClampMagnitude(input, 1);

        // Tank move
        rigidbody.AddForce(direction * 20);
        rigidbody.velocity = Vector2.ClampMagnitude(rigidbody.velocity, maxSpeed);

        transform.up = new Vector2(direction.x, direction.y);
    }
}