Unity movement

~~~~~~~~~~~~~~~~~~	PRIMEIRA FORMA:~~~~~~~~~~~~~~~~


public float maxSpeed = 10;
//andando para esquerda
if (Input.GetKey("left") || Input.GetKey ("a"))
{
	transform.position -= Vector3.right * maxSpeed * Time.deltaTime;
}

//andando para direita
if (Input.GetKey ("right") || Input.GetKey ("d"))
{
	  transform.position += Vector3.right * maxSpeed * Time.deltaTime;
}

~~~~~~~~~~~~~~~~~~~~~~~~SEGUNDA FORMA~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

//esquerda
if (Input.GetAxisRaw ("Horizontal") > 0)
{
	transform.Translate (Vector2.right * maxSpeed * Time.deltaTime);
}

//direita
if (Input.GetAxisRaw ("Horizontal") < 0)
{
	transform.Translate (-Vector2.right * maxSpeed * Time.deltaTime);
}~

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~TERCEIRA FORMA~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
float move = Input.GetAxis ("Horizontal");
rigidbody2D.velocity = new Vector2 (move * maxSpeed, rigidbody2D.velocity.y);