unity C# bool and to set false by time…?

Question

this is My Code:

if ( run && Input.GetKeyDown (KeyCode.K)) {
    anim.SetInteger ("State", 4);
    slide = true;
}

if (Input.GetKeyUp (KeyCode.K)) {
    slide = false;
    anim.SetInteger ("State", 0);
}

My problem: if I hold the ( KeyCode.K ) than slide is still true which I don´t want.

I need set slide to true just once, or to false after 2 seconds only.

I hope you all understand what I want.

Answer 1

I would suggest making slide a property which will set your integer :

public bool Slide
{
    get { return slide; }
    set
    {
        if ( value == slide ) return;

        slide = value;

        if( slide ) anim.SetInteger("State", 4);
        else anim.SetInteger("State", 0);
    }
}

One of the many possible options would be to create a Coroutine that just resets the flag back to false :

IEnumerator StartSlide()
{
    const float MAX_TIME = 2.0f; // time to wait before resetting the flag
    Slide = true;
    float timeNow = 0.0f;
    while ( timeNow < MAX_TIME && Slide )
    {
       timeNow += Time.deltaTime;
       yield return new WaitForEndOfFrame();
    }
    Slide = false;
}

And to use this you can call :

if ( run && Input.GetKeyDown(KeyCode.K) && !Slide )
{
     StartCoroutine(StartSlide());
}

You can also use this with GetKeyUp method :

if ( Input.GetKeyUp(KeyCode.K) && Slide )
{
    Slide = false;
}

Answer 2

void Update{

    if ( key_K && run && Input.GetKeyDown (KeyCode.K)) {
            key_K = false;

            StartCoroutine ("coRoutine_keyK");

        }

}


IEnumerator coRoutine_keyK(){
        slide = true;
        anim.SetInteger ("State", 4);
        yield return new WaitForSeconds (0.5f);

        slide = false;
        anim.SetInteger ("State", 0);

        key_K = true;
    }