trouble using InvokeRepeating to flash objects visibilty

Unity Engine
1

in the following script the objects visibility isnt toggled and it seems like cancelInvoke is cancelling in the first run through instead of subtracting from the counter and toggling the visibility then canceling when the counter has reached 0.
if i remove the CancelInvoke the objects visibility toggles on and off like i would expect

i think i am using it incorrectly but for the life of me i cannot figure whats up with the script
any ideas? on how to get this to work

i know i can do it otherways but i would like to get the invoke repeating to work, so that i understand how it should be used etc.
thanks

var counter:int=4;
private var hidden:boolean=false;
function Update()
{
	if(Input.GetButton("Jump"))
		{
			Input.ResetInputAxes();
			counter = 4;
			InvokeRepeating("toggleVisibilty", 0, .3);
			Debug.Log("Finished flashing");
		}
}

function toggleVisibilty()
{
	 GameObject.Find("Roach_Sprite").GetComponent(MeshRenderer).enabled = hidden; // stop rendering the player.

     hidden = !hidden;
     Debug.Log(counter);
     Debug.Log(hidden);
     counter --;
     if (counter == 0)
     	CancelInvoke("toggleVisibilty");
}
2

bump

3

bump…

any suggestions as too where i might be going wrong with the use of invokeRepeating and cancelInvoke?

4

I dont think having invoke call GameObject.Find is a very good idea performance wise ^^.

anyway I will prefer have this script on your object that need to toggle it visibility then just enable the script

so something like that maybe (sorry C# )

public float toggleTime = 0.3f;
public int counter = 4;

//private
int storedCounter;

void Awake()
{
   //I assume the script may be off when you start.
   enabled = false;

   storedCounter = counter;
}

void OnEnable()
{
     counter = storedCounter;
     InvokeRepeating("ToggleVisibility",0.01f, toggleTime); 
}

public void ToggleVisibility()
{
    //check that you have renderer component on this object (just defensive programming ,
    //you can get rid of that if later )
    if(!renderer)
    {
       enabled = false;
       return;
    }
    //Do your toggle---------
    else if(counter > 0)
    {
        renderer.enabled = !renderer.enabled;
        counter --;
    }
    else
        enabled = false;
}

void OnDisable()
{
   CancelInvoke("ToggleVisibility");
}

Doing so you just fire you script form somewhere when you need

hope that help :wink:

oh by the way you could then just fire this script when your button is pressed then

5

hmm anyway if what you wanted to do is hide the player for X time once then show it again in that case use coroutine and yield instead.
My anser was based on a flash toggle like old skool game when you get back in game and stay invincible for a little bit of time…

6

thanks for the help… i will give your code a try and see how i go

7

Thanks giyomu for you help, works like a charm

8

manage to work out what was wrong with my script i had

InvokeRepeating(“toggleVisibilty”, 0, .3);

but it needed to be InvokeRepeating(“toggleVisibilty”, 0f, .3f);

does the f mean its a float?

9

If you don’t add the “f” to the number in C#, then the compiler assumes you want the number to be a double rather than a float. Unity uses floats for most things in the interests of performance.

10

glad that helped you

by the way i realize ( if you didn’t before me ) that you better to move the check for renderer in OnEnable(), rather to check for it every repeat XD…my bad ^^

well just a note tho :slight_smile: