Both Invoke and Waitforseconds doesn't work

Questions & Answers
1

I am new to Unity and have no idea how to solve this.
I tried to make an speed up game object for 5 seconds after touching a note. I tried both function but nothing seems to work.

Everything posted here is in MonoBehavior.

	private bool isSpeedUp = false;
	private float timeSpeedUp = 1f;
	public float defaultTimeSpeedUp = 5f;
	private float DefaultMoveSpeed;
	private float DefaultTurnSpeed;
	private float starttimer = 0f;

	public void ZombieTouch ()
	{
		Transform goldnote = transform.GetChild (0);
		goldnote.collider2D.enabled = false;
		goldnote.GetComponent<Animator> ().SetBool ("CollectNote", true);
		isSpeedUp = true;
		DefaultMoveSpeed = Common.ZombiemoveSpeed;
		DefaultTurnSpeed = Common.ZombieturnSpeed;
		Debug.Log ("Zombie Speed -1 " + Common.ZombiemoveSpeed);			
		StartCoroutine (SpeedUp ());
		SpeedUp2 ();
	}

	IEnumerator SpeedUp()
	{
		Debug.Log ("SpeedUp coroutine run");
		Debug.Log ("Zombie Speed CR 0 " + Common.ZombiemoveSpeed);			
		Common.ZombiemoveSpeed = DefaultMoveSpeed + 2;
		Common.ZombieturnSpeed = DefaultTurnSpeed + 2;
		Debug.Log ("Zombie Speed CR 1 " + Common.ZombiemoveSpeed);	
		yield return new WaitForSeconds(5);
		Debug.Log ("Waiting...");
		SpeedDown();
	}

	void SpeedUp2 ()
	{
		Debug.Log ("Zombie Speed IV 0 " + Common.ZombiemoveSpeed);			
		Common.ZombiemoveSpeed = DefaultMoveSpeed + 2;
		Common.ZombieturnSpeed = DefaultTurnSpeed + 2;
		Debug.Log ("Zombie Speed IV 1 " + Common.ZombiemoveSpeed);	
		Invoke ("SpeedDown", timeSpeedUp);
		Debug.Log ("Invoke striked");
	}		

	void SpeedDown ()
	{	
		Debug.Log ("Speed down called");
		Common.ZombiemoveSpeed = Common.defaultMoveSpeed;
		Common.ZombieturnSpeed = Common.defaultTurnSpeed;
		Debug.Log ("Zombie Speed2 " + Common.ZombiemoveSpeed);
		isSpeedUp = false;	
	}

I posted both methods. Both of which does not call SpeedDown function. When the game is run:

  • the log doesn’t show “Waiting…” that I place after WaitforSeconds method

  • the log does show “Invoke striked”

  • speed of object increase as intended, it should because SpeedUp is called properly.

  • I tried to use only one at a time but the result is the same as described above.

Please help, I am at my wits end.

2

@Bunny83: you are right. I have a script that destroy the object after its animation Disappear. The animation is activated by goldnote.GetComponent ().SetBool ("CollectNote", true);
This will be a very memoralbe lession as it cost about 16 hours of fixing. Thanks.
I guess the speed up and down functions will be handled by a script independent from this object then.