How to restart the coroutine?

Questions & Answers
1

I making a Enemyspawning code that will spawn enemy at the exact time wit coroutine which work well for me
but when my character die I want the coroutine to start from the beginning again.
Any Idea I can do that?

Thnx for the help >W<

2

As Sergio7888 said, you would need to manually stop the coroutine then start it again. You can write some Extension Methods that can handle that that for you.

using UnityEngine;
using System.Collections;
public static class CoroutineExtensions
{	
	/// <summary>
	/// Tries to stop a coroutine based on a Coroutine Handle.
	/// will only stop the Coroutine if the handle is not null
	/// </summary>
	/// <returns>the Monobehaviour script running the coroutine, allowing chained commands</returns>
	/// <param name="handle">Handle.</param>
	public static MonoBehaviour TryStopCoroutine(this MonoBehaviour script, ref Coroutine handle)
	{
		
		if (handle != null)
			script.StopCoroutine (handle);

		return script;
	}

	/// <summary>
	/// Starts the coroutine and sets the routine to a Coroutine handle.
	/// </summary>
	/// <returns>the Monobehaviour script running the coroutine, allowing chained commands</returns>
	/// <param name="routine">Routine.</param>
	/// <param name="handle">Handle.</param>
	public static MonoBehaviour StartCoroutine(this MonoBehaviour script,IEnumerator routine, ref Coroutine handle)
	{
		if(!script.enabled || !script.gameObject.activeInHierarchy)
		{
			Debug.LogErrorFormat (script, "The Script {0} is currently disabled and cannot start coroutines", script);
			return script;
		}

		handle = script.StartCoroutine (routine);

		return script;
	}


	/// <summary>
	/// Stops any possible coroutine running on the specified handle and runs a new routine in its place
	/// </summary>
	/// <returns>the Monobehaviour script running the coroutine, allowing chained commands</returns>
	/// <param name="script">Script.</param>
	/// <param name="routine">Routine.</param>
	/// <param name="handle">Handle.</param>
	public static MonoBehaviour RestartCoroutine(this MonoBehaviour script, IEnumerator routine, ref Coroutine handle)
	{
		return script.TryStopCoroutine (ref handle)
			         .StartCoroutine (routine, ref handle);
	}
}

With this, any Monobehaviour script can start, restart, and safely stop (if its running) any coroutine its running by handle.

public class BombScript : MonoBehaviour
{
	public Coroutine handle;

	void OnCollisionEnter(Collider other)
	{
		//when a player touches the bomb it will start to countdown, touching the bomb again resets the countdown
		if(other.GetComponent<Player>() != null)
		//being an extension method, you'll need to use the "this" keyword to access it
			this.RestartCoroutine (CountDown(5f),ref handle);

	}

	private IEnumerator CountDown(float timer)
	{
		YieldInstruction wait = new WaitForSeconds (1);
		
		Debug.Log ("Bomb will explode in...");
		while (timer > 0) 
		{
			Debug.Log (Mathf.CeilToInt(timer));
			timer -= 1;
			yield return wait;
		}

		Explode ();
	}

	private void Explode()
	{
		Debug.Log ("You Lose!");
	}
}
3

Thnx a lot!!!Now it’s working >W<