Added RemoveAndFadeButton() command

Assets/Fungus/Scripts/Commands.cs

@@ -474,7 +474,7 @@ namespace Fungus
 		}
 
 		/** 
-		 * Makes a sprite stop behaving as a clickable button
+		 * Makes a sprite stop behaving as a clickable button.
 		 */
 		public class RemoveButtonCommand : CommandQueue.Command
 		{
@@ -493,6 +493,7 @@ namespace Fungus
 			
 			public override void Execute(CommandQueue commandQueue, Action onComplete)
 			{
+				// Remove the button component
 				Button button = spriteRenderer.gameObject.GetComponent<Button>();
 				GameObject.Destroy(button);
 

Assets/Fungus/Scripts/GameController.cs

@@ -387,6 +387,21 @@ namespace Fungus
 			commandQueue.AddCommand(new Command.RemoveButtonCommand(spriteRenderer));
 		}
 		
+		/**
+		 * Makes a sprite stop behaving as a clickable button and fades out the button sprite.
+		 * The fade duration is specified in Game.buttonFadeDuration
+		 * This method returns immediately but it queues an asynchronous command for later execution.
+		 * @param spriteRenderer The sprite to be made non-clickable
+		 */
+		public void RemoveAndFadeButton(SpriteRenderer spriteRenderer)
+		{
+			CommandQueue commandQueue = Game.GetInstance().commandQueue;
+			commandQueue.AddCommand(new Command.RemoveButtonCommand(spriteRenderer));
+
+			FadeSprite(spriteRenderer, 0f, Game.GetInstance().buttonFadeDuration);
+		}
+
+
 		/**
 		 * Sets an animator trigger to change the animation state for an animated sprite.
 		 * This is the primary method of controlling Unity animations from a Fungus command sequence.

Assets/FungusExample/Scripts/ButtonRoom.cs

@@ -38,6 +38,9 @@ public class ButtonRoom : Room
 	void OnMusicClicked()
 	{
 		PlaySound(effectClip);
+
+		// Hide this button once the player clicks it
+		RemoveAndFadeButton(musicSprite);
 	}
 
 	void OnQuestionClicked()