public class Personaje : MonoBehaviour {

private Rigidbody2D myRigidBody;

private Animator myAnimator;

[SerializeField] //para poder editarlo en el inspector
private float movementSpeed;

private bool attack;

private bool direccionPersonaje;

[SerializeField]
private Transform[] groundPoints;

[SerializeField]
private float groundRadius;

[SerializeField]
private LayerMask whatIsGround;

private bool isGrounded;

private bool jump;

[SerializeField]
private float jumpForce;

public GameObject leftBullet, rightBullet;

Transform firePos;

// Use this for initialization
void Start () {

    direccionPersonaje = true;
    //Referenciamos el rigidbody que tenemos en el player con la variable que hemos creado arriba
    myRigidBody = GetComponent<Rigidbody2D>();
    myAnimator = GetComponent<Animator>();
    GetComponent<Rigidbody2D>().angularVelocity = 0;

    firePos = transform.FindChild ("firePos");

}

void Update()
{
    HandleInput();
}

// Update is called once per frame
void FixedUpdate()
{
    float horizontal = Input.GetAxis ("Horizontal");

    isGrounded = IsGrounded ();

    HandleMovement (horizontal);

    Flip (horizontal);

    if (Input.GetKeyDown (KeyCode.K))
    {
        Fire ();
    }

    HandleAttacks();

    ResetValues();


}

private void HandleMovement(float horizontal)
{
    if (!this.myAnimator.GetCurrentAnimatorStateInfo (0).IsTag ("Attack"))
    {
        myRigidBody.velocity = new Vector2 (horizontal * movementSpeed, myRigidBody.velocity.y);
    }

    if (isGrounded && jump) {

        isGrounded = false;

        myRigidBody.AddForce (new Vector2 (0, jumpForce));

        myAnimator.SetTrigger ("Jump");
    }



    myAnimator.SetFloat ("speed", Mathf.Abs (horizontal));
}

private void HandleAttacks()
{
    if (attack)
    {
        myAnimator.SetTrigger("attack");
        myRigidBody.velocity = Vector2.zero;
    }
}

private void HandleInput()
{
    if (Input.GetKeyDown (KeyCode.K))
    {
        attack = true;
    }

    if (Input.GetKeyDown (KeyCode.Space)) {

        jump = true;
    }

}

private void Flip(float horizontal)
{
    if (horizontal > 0 && !direccionPersonaje || horizontal < 0 && direccionPersonaje) {

        direccionPersonaje = !direccionPersonaje;

        Vector3 theScale = transform.localScale;

        theScale.x *= -1;

        transform.localScale = theScale;
    }
}

private void ResetValues()
{
    attack = false;
    jump = false;

}

private bool IsGrounded (){

    if (myRigidBody.velocity.y <= 0) {  //si estamos parados en el eje y ( en el suelo)

        foreach (Transform point in groundPoints) {

            Collider2D[] colliders = Physics2D.OverlapCircleAll (point.position, groundRadius, whatIsGround);

            for (int i = 0; i < colliders.Length; i++) {

                if (colliders [i].gameObject != gameObject) {

                    myAnimator.ResetTrigger ("Jump");
                    return true;
                }
            }
        }
    }
    return false;
}

void Fire()
{
    if (direccionPersonaje)
    {
        Instantiate(rightBullet, firePos.position, Quaternion.identity);
    }

    if (!direccionPersonaje)
    {
        Instantiate(leftBullet, firePos.position, Quaternion.identity);
    }
}