private CharacterController controller;
public float Speed = 1f;
public float RotateSpeed = 1f;

void Start(){
	controller =  transform.GetComponent<CharacterController>();
}

void Update(){
	//键盘控制
	Move();
	//鼠标控制
	MoveMouse();
}

private void Move(){
	var horizontal = Input.GetAxis("Horizontal");
	var vertical = Input.GetAxis("Vertical");
	
	var move = transform.forward * Speed * vertical * Time.deltaTime;
	controller.Move(move);

	transform.Rotate(Vector3.up, horizontal * RotateSpeed);
}

private void MoveMouse(){
	var horizontal = Input.GetAxis("Horizontal");
	var vertical = Input.GetAxis("Vertical");

	var direction = new Vector3(horizontal, 0, vertical).normalized;
	var move = direction * Speed * Time.deltaTime;
	controller.Move(move);
	
	var playerScreenPoint = Camera.main.WorldToScreenPoint(transform.position);
	var point = Input.mousePosition - playerScreenPoint;
	var angle = Mathf.Atan2(point.x, point.y) * Mathf.Rad2Deg;

	transform.eulerAngles = new Vector3(transform.eulerAngles.x, angle, transform.eulerAngles.z);
}