void Distanciando()
 {
     if(cameraObj.camera.orthographicSize < zoomLonge){
         cameraObj.camera.orthographicSize += zoomSpeed * Time.deltaTime;
         ultimoZoom = "Distanciando";
     } else {
         estadocamera = EstadoCamera.estatica;
     }
 }
 void Aproximando()
 {
     if(cameraObj.camera.orthographicSize > zoomperto){
         cameraObj.camera.orthographicSize -= zoomSpeed * Time.deltaTime;
         ultimoZoom = "Aproximando";
     } else {
         estadocamera = EstadoCamera.estatica;
     }
 }
    void OnTriggerEnter(Collider other)
    {
        if(other.gameObject.tag == "Camera+z"){
            estadocamera = EstadoCamera.aproximando;
            Destroy (other.gameObject);
        }

        if(other.gameObject.tag == "Camera-z"){
            estadocamera = EstadoCamera.distanciando;
            Destroy (other.gameObject);
        }

        if(other.gameObject.tag == "CameraAjustaFoco"){
            estadocamera = EstadoCamera.ajustaFoco;
            Destroy (other.gameObject);
        }
    }
 // Use this for initialization
 void Start()
 {
     estadocamera = EstadoCamera.estatica;
 }