fungus/Assets/Fungus/Camera/Scripts/Commands/FadeScreen.cs

using UnityEngine;
using System;
using System.Collections;

namespace Fungus
{
	[CommandInfo("Camera", 
	             "Fade Screen", 
	             "Draws a fullscreen texture over the scene to give a fade effect. Setting Target Alpha to 1 will obscure the screen, alpha 0 will reveal the screen. " +
	             "If no Fade Texture is provided then a default flat color texture is used.")]
	[AddComponentMenu("")]
	public class FadeScreen : Command 
	{
		[Tooltip("Time for fade effect to complete")]
		public float duration = 1f;

		[Tooltip("Current target alpha transparency value. The fade gradually adjusts the alpha to approach this target value.")]
		public float targetAlpha = 1f;

		[Tooltip("Wait until the fade has finished before executing next command")]
		public bool waitUntilFinished = true;

		[Tooltip("Color to render fullscreen fade texture with when screen is obscured.")]
		public Color fadeColor = Color.black;

		[Tooltip("Optional texture to use when rendering the fullscreen fade effect.")]
		public Texture2D fadeTexture;
		
		public override void OnEnter()
		{
			CameraController cameraController = CameraController.GetInstance();
			
			if (waitUntilFinished)
			{
				cameraController.waiting = true;
			}
			
			if (fadeTexture)
			{
				cameraController.screenFadeTexture = fadeTexture;
			}
			else
			{
				cameraController.screenFadeTexture = CameraController.CreateColorTexture(fadeColor, 32, 32);
			}
			
			cameraController.Fade(targetAlpha, duration, delegate {	
				if (waitUntilFinished)
				{
					cameraController.waiting = false;
					Continue();
				}
			});
			
			if (!waitUntilFinished)
			{
				Continue();
			}
		}
		
		public override string GetSummary()
		{
			return "Fade to " + targetAlpha + " over " + duration + " seconds";
		}
		
		public override Color GetButtonColor()
		{
			return new Color32(216, 228, 170, 255);
		}
	}
	
}