koobas.hobune.stream
Passing a rectangle as a parameter seems to have no effect on original using StartCoRoutine
Hi,
I'm trying to use a function where I pass a Rect as a parameter and modify the properties of that Rect, but it seems to have no effect when using StartCoRoutine. I can pass in the rectangle, but the "configureRectGroup" properties does not change. Is this expected behavior? Thanks!
Here's the relevant source:
public class MainMenu : MonoBehaviour {
public GUISkin mainMenuSkin; public GUISkin configureSkin;
// . Configure vars private Rect configureRectGroup = new Rect (0, 0, 240, 0); private Rect configureRect = new Rect (0, 0, 197, 336); // .
void Start () {
StartCoroutine(ScaleIn(configureRectGroup, 0.333f, 0, configureRect.height));
}
private IEnumerator ScaleIn(Rect rec, float seconds, float fromHeight, float toHeight) { float t = 0.0f;
while (t < 1.0f)
{
t += Time.deltaTime * (1.0f/seconds);
rec.height = Mathf.Lerp(fromHeight, toHeight, Easing.Ease(t, Easing.EaseType.In));
rec.y = Screen.height / 2 - (rec.height / 2);
yield return true;
}
}
}
Is yielding "true" doing anything special? (I honestly don't know) If not, the preferred way is to yield null (waiting for one frame). Yielding values cause boxing and unnecessary overhead. But please fill me in if "true" is used for anything. :)
No, "true" is not doing anything. I'll change it to null, thanks for the tip!
You would need to pass it by reference (ref and out keywords) since it is a value type, a struct, but:
But in my own experiences Unity does not allow you to pass parameters by reference in iterators like that (using while() then yield return something).
Ahh, it's a struct. Yeah, I tried ref and out, which the compiler threw an error. Thanks Peter!
