Fading Out UI On Play

Question

Hi. I have a play button in my game. When the user taps the play button I want all of the UI to fade out. I have a canvas group that controls that alpha of all of these UI elements. Now all I want to do is when the user taps the play button I want all UI elements to fade out and then switch to the game scene. The game scene looks exactly the same except with none of the previous UI. How can I do this?

Answer 1

Best Answer

Answer by fafase · Dec 20, 2014 at 05:22 PM

 [SerializeField] private CanvasGroup canvasGroup = null;
 [SerializeField] private float speed = 1f;
 private bool callOnce = false;
 
 public void LoadNextScene()
 {
     if(callOnce == false){
        StartCoroutine(LoadNextSceneCoroutine());
     }
 }
 private IEnumerator LoadNextSceneCoroutine()    {
     callOnce = true;
     while(canvasGroup.alpha > 0){
         canvasGroup.alpha -= Time.deltaTime * speed;
         yield return null;
     }
     Application.LoadLevel("Scene2");
 }

Attach that to a game object and then drag it into the onClick section of the button. Choose the LoadNextScene method and I guess that should do it.

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vincentamato · Dec 20, 2014 at 05:51 PM 0

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@fafase I keep getting 2 errors. Here they are:

Assets/Scripts/GoToGameOnPlay.cs(14,25): error CS1502: The best overloaded method match for UnityEngine.MonoBehaviour.StartCoroutine(System.Collections.IEnumerator)' has some invalid arguments 2. Assets/Scripts/GoToGameOnPlay.cs(14,25): error CS1503: Argument #1' cannot convert method group' expression to type System.Collections.IEnumerator'

I also assume there is suppose to be a space between IEnumerator and LoadNextSceneCoroutine() on line 12.

Why do I keep getting these errors?

fafase · Dec 20, 2014 at 08:12 PM 0

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Yep my bad I fixed those. U need the space and the parenthesis.

vincentamato · Dec 20, 2014 at 08:25 PM 0

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@fafase There is a little pause in the transition before it goes to the game scene. Is there anything that can fix this?

Kiwasi · Dec 20, 2014 at 08:56 PM 0

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The pause is probably the time it takes I actually load the next scene.

Fading Out UI On Play

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