Easy fade in/out on level load/end?

@wuchiang curious to know why LateUpdate() as opposed to Update() ?

You can also achieve the same by creating an animation that animates the alpha value of a material within the hierarchy of the attached GameObject.

You could optionally have an Animation Event that you could use to disable the renderer on fade in - you don't want to be rendering a completely transparent polygon or two.

A good approach it to do the above in a Coroutine and the you will not be Updating() unnecessarily.

I usually do color interpolations and similar changes in LateUpdate if they're not necessary in Update, I don't think it really matters in this case though.

That animation example sounds really handy! I'll try it out sometime.

Also, if a coroutine was used wouldn't another script then be necessary to trigger this functionality? I suppose that would be better than updating unnecessarily. If you have the time, Could you show me an example of how you would use a coroutine to do this? I don't have a lot of experience with them other than using them with WaitForSeconds.

@wuchiang thank you, but there is a strange glitch. For some reason, when I try to start the level via the start screen or the game over screen, it won't load.

$$anonymous$$y code shouldn't be doing that. Are you sure it's not caused by something else?

@wuchiang $$anonymous$$aybe.... I have another problem too now. How do I get it to fade out at the end of the scene? Here are the scripts controlling it: Fading: public class Fading : $$anonymous$$onoBehaviour { ============================================ public float StartAlpha = 1.0f; // The transparency value to start fading from public float EndAlpha = 0.0f; // The transparency value to end fading at public float FadingSpeed = 1.0f; // The speed of the effect

private float Timer = 0.0f; // The time passed since fading was enabled private bool FadingOn = true; // Controls whether to fade or not private bool FadingOut = true; // Controls whether to fade or not

//==================================================================================================== // Custom Functions //====================================================================================================

// Use this function to control fading using another script // i.e. // Fading fadingScript = fadingObject.GetComponent(); // fadingScript.Fade(true); public void Fade (bool fade) { FadingOn = fade; } public void FadeOut (bool fadeO) { FadingOut = fadeO; }

//==================================================================================================== // Unity Functions //==================================================================================================== void LateUpdate () { // Don't do anything if we are not fading if (!FadingOn || !FadingOut) return;

// Increase the timer by the amount of time passed since the last frame Timer += Time.deltaTime;

// Change the material's color, keeping RGB intact and interpolating alpha between // StartAlpha and EndAlpha if (FadingOn) { renderer.material.color = new Color ( renderer.material.color.r, renderer.material.color.g, renderer.material.color.b, $$anonymous$$athf.Lerp (StartAlpha, EndAlpha, Timer FadingSpeed) ); } if (FadingOut) { renderer.material.color = new Color ( renderer.material.color.r, renderer.material.color.g, renderer.material.color.b, $$anonymous$$athf.Lerp (EndAlpha, StartAlpha, Timer FadingSpeed) ); } // Done fading if (renderer.material.color.a == EndAlpha) { // Stop fading and reset timer Timer = 0.0f; FadingOn = false;

// Do whatever you need to do // i.e.: transition or destroy this object } }

}

Fadeout: using UnityEngine; using System.Collections;

public class FadeOut : $$anonymous$$onoBehaviour { public Transform fadeObject; bool loaded = false; // Use this for initialization IEnumerator Example() { yield return new WaitForSeconds(3); loaded = true; }

// Update is called once per frame void Update () {

if(PlayerCollision.lives < 1 && loaded){ fadeObject.GetComponent().FadeOut(true); Application.LoadLevel("GameOver"); } } } It is fading in then immeadiately fading out. I put in the yield to see if this was being caused by the lives ot loading fast eough. Thanks!

Thanks a lot, that certainly does help me think of much more compact and easier ways of doing things.