private void SpawInimigo()
    {
        float distanciaZ    = (transform.position - Camera.main.transform.position).z;
        float bordaEsquerda = Camera.main.ViewportToWorldPoint(new Vector3(0, 0, distanciaZ)).x;
        float bordadireita  = Camera.main.ViewportToWorldPoint(new Vector3(1, 0, distanciaZ)).x;

        Vector3 posicao = Vector3.zero;
        float   posicaoRandom;

        if (Random.Range(0, 2) == 0)
        {
            posicaoRandom = Random.Range(bordadireita - 0.5f, bordadireita - distancias.x);
            posicao       = new Vector3(bordadireita + 2f, transform.position.y, Random.Range(-6f, 6f));
        }
        else
        {
            posicaoRandom = Random.Range(bordaEsquerda + 0.5f, bordaEsquerda + distancias.y);
            posicao       = new Vector3(bordaEsquerda - 2f, transform.position.y, Random.Range(-6f, 6f));
        }

        InimigaIA temp_Inimigo = Instantiate(inimiga, posicao, Quaternion.identity).GetComponent <InimigaIA> ();

        temp_Inimigo.MudarPosicaoSorteada(posicaoRandom);
        temp_Inimigo.tempoTiroRange = tempoTiroRange;
    }
 void Awake()
 {
     fatherInimigaIA = GetComponentInParent <InimigaIA> ();
 }