Invoke Repeating a certain amount of times

Best method for repeating something a certain amount of times? I sometimes just use a condition to compare an interger value. But do we have something with a built parameter to count down?

 

You could use a Coroutine with a counter in it's scope.

i.e.

Code (csharp):

1.  
2. public class MyClass : MonoBehaviour
3. {
4.     void Start()
5.     {
6.         StartCoroutine(MyCounter(10));
7.     }
8.    
9.     IEnumerator MyCounter(int number)
10.     {
11.         int i = 0;
12.         while(i < number)
13.         {
14.             //do stuff
15.             yield return 0; //Wait 1 Frame
16.             //yield return new WaitForSeconds(1.0f) //wait 1 second per interval
17.         }
18.     }
19. }
20.  

If you were to pass in a delegate to this function you could then create an invoke X times function where you can reuse it for any value of X or any function with the same signature.

 

Code (csharp):

1. private var counter : int;
2.  
3. function Start () {
4.     counter = 10;
5.     InvokeRepeating("Foo", 0, 0);
6. }
7.  
8. function Foo () {
9.     // do stuff
10.     if (--counter == 0) CancelInvoke("Foo");
11. }

I guess that's what you meant, but there's nothing particularly wrong with that.

--Eric

 

Hey that's cool, I didn't know you could put the operator on the left side and check it in the same statement. I don't know why there isn't just a fourth parameter in InvokeRepeating. LOL

 

You can do "if (counter-- == 0)" too, but that's somewhat different. The first way decrements the number immediately and compares the result, while the second way compares the variable to the result and then decrements it.

--Eric

 

I know this is an old thread but I just wanted to point out that you missed out the increment of i at the end so that would be an infinite loop.

 

Could you please post the correct update that you are suggesting?

 

He meant that "i++" was missing from within the loop, in order for it to break out at the condition.

 

or just use a for loop.

 

Code (CSharp):

1.  
2. public class MyClass : MonoBehaviour
3. {
4.     void Start()
5.     {
6.         StartCoroutine(MyCounter(10));
7.     }
8.  
9.     IEnumerator MyCounter(int number)
10.     {
11.         int i = 0;
12.         while(i < number)
13.         {
14.             //do stuff
15.             yield return 0; //Wait 1 Frame
16.             //yield return new WaitForSeconds(1.0f) //wait 1 second per interval
17.             i++;
18.         }
19.     }
20. }
21.  

All you need is to increment the variable i each iteration.