Courutine/Invoke/WaitForSeconds

Unity Engine
1

Hi guys,
I really need some light on my task, because I’m a bit lost and don’t know what to do.

Here is a small sketch of my code

int x = 0;
int keyToPress = -1;

int fails = 0;
int correct = 0;

void MyFunc(){
    if(x<=100){
        int rand = Random.Range(0,1);
        x++;
    }
}

void Update(){
    if (Input.GetKeyDown(KeyCode.A)){
        if(keyToPress != 0){
            fails++;
        } else {
            correct++;
        }
    }
    if (Input.GetKeyDown(KeyCode.S)){
        if(keyToPress != 1){
            fails++;
        } else {
            correct++;
        }
    }
}

I want a way for MyFunc to be called every 3 seconds, but if after 1 second the user presses that key ‘A’ or ‘S’, I want to reset the timer and call MyFunc again until x == 100. I’m not sure what to use between those three methods or if there is another way.
Please help me

2

Odd considering the rand variable is confined to the scope of the if statement, therefore the MyFunc method is basically useless :stuck_out_tongue_winking_eye:

To call MyFunc every 3 seconds you’d turn it into a coroutine like this:

IEnumerator myFuncRoutine;

IEnumerator MyFunc()
{
    WaitForSeconds delay = new WaitForSeconds(3)
    while(true)
    {
        // Algorithmy stuff to run every 3 seconds goes here
        yield return delay;
    }
}

This will run forever when called with:

myFuncRoutine = StartCoroutine(MyFunc);

Note that we’re keeping a reference to the routine in a global variable. You only need to do this for routines you want to stop later. For the second part, stopping it after 1 second if a key is pressed, you can do something like this:

float timeElapsed = 0;

void Update()
{
    timeElapsed += Time.deltaTime;
    if (Input.GetKeyDown(KeyCode.S)
    {
        if (timeElapsed >= 1f)
        {
            StopCoroutine(myFuncRoutine);
            timeElapsed = 0f;
        }
    }
    if (Input.GetKeyDown(KeyCode.A)
    {
        if (timeElapsed >= 1f)
        {
            StopCoroutine(myFuncRoutine);
            timeElapsed = 0f;
        }
    }
}

Here we’re keeping a float for the time elapsed, all you do is add Time.deltaTime (the duration of the last frame) to the total.

1 Like
3

Thank you very much. I think I got the point and I’m going to try it now.