using UnityEngine;

[RequireComponent(typeof(Rigidbody))]
public class Tank : MonoBehaviour {

    [SerializeField] private float _moveSpeed;
    [SerializeField] private float _turnSpeed;

    private Rigidbody _rigidbody;
    private Vector3 _turnInput;
    private float _moveInput;

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

    private void Update() {
        _moveInput = Input.GetAxis("Vertical") * _moveSpeed * Time.fixedDeltaTime;
        _turnInput.y = Input.GetAxis("Horizontal") * _turnSpeed * Time.fixedDeltaTime;
        if (_moveInput < 0)
            _turnInput.y *= -1;
    }

    private void FixedUpdate() {
        var movement = _moveInput * transform.forward;
        _rigidbody.MovePosition(_rigidbody.position + movement);

        if (_turnInput.y != 0) {
            var turnRotation = Quaternion.Euler(_turnInput);
            _rigidbody.MoveRotation(_rigidbody.rotation * turnRotation);
        }
    }
}