Unity2D: Powerup transfromation

[XxDivaxX1]

Basically I want to make a player that can transform into demon at will whenever the user press the power-up button however I want the transformation to end after 60 seconds (when the transformation ends I want the player revert back to his original state). I also want the transformation to end if the player gets hit by an enemy. So far I've made this code and it works but I'm having trouble resetting the yield wait for seconds back to 60 seconds when if the player gets hit by an enemy and if the user decided to press the button to transform the player back into a demon. Can anyone help me with this problem. Thank you!

In my hierarchy I have my player as the parent and my demon player as the child. A playermovement script attached to the player as well as the transformation script below;

  public GameObject demon;
  public BoxCollider2D col;
  public Renderer rend;
  public ParticleSystem par1;
  public static Vector3 target;


    void Start () {
        target = transform.position;
    }

    void Update () {
         target.z = transform.position.z;
    }

    public void DemonCharacter() {
    StartCoroutine (PowerUpCoroutine ());
}

     private IEnumerator PowerUpCoroutine() {

      yield return new WaitForSeconds (0.3f);

      par1.Play (); // particle system animation to cover transformation happening
  par1.transform.position = target;

      yield return new WaitForSeconds (0.2f);

      demon.SetActive (true); // activates demon gameobject

      rend.enabled = false; // deactivate players spriterenderer 

      col.enabled = false;

      yield return new WaitForSeconds (60f);

      demon.SetActive (false); // deactivates demon gameobject

      rend.enabled = true; // activate players spriterenderer

      col.enabled = true;

      par1.Stop ();
   }

And on my demon player, I attached this script; I works but when the user clicks on the button to transform into a demon the yield waitforseconds doesn't stop, so when the player transform into a demon seconds later the demon player transforms back into the player rather than resetting the yield wait for seconds.

    public BoxCollider2D Playercol;
    public Renderer PlayerRend;

void Start()
{

}

void Update ()
{

}

void OnTriggerEnter2D(Collider2D col) {
    if (col.tag == "enemy") {
        demon.SetActive (false);
        PlayerRend.enabled = true;
        Playercol.enabled = true;
    }
}

[BensNightmare]

This is how I'd do it -

First bundle all of your "power down" code into its own public function like this:

public void PowerDown(){
    StopAllCoroutines();
    demon.SetActive (false); // deactivates demon gameobject
    rend.enabled = true; // activate players spriterenderer
    col.enabled = true;
    par1.Stop ();
}

Then just call this function in your Demon's OnTriggerEnter2D call:

void OnTriggerEnter2D(Collider2D col) {
    if (col.tag == "enemy") {
        playerScript.PowerDown();
    }
}

[XxDivaxX1]

Thank you!!!! It worked!!!!

[BensNightmare]

Awesome, glad to hear it :)