Added ShowSprite command. Moved mushroom sprites to FungusScript

Assets/Fungus/Sprite/Commands/FadeSprite.cs

@@ -10,7 +10,7 @@ namespace Fungus.Script
 	public class FadeSprite : FungusCommand 
 	{
 		public SpriteRenderer spriteRenderer;
-		public float duration;
+		public float duration = 1f;
 		public Color targetColor = Color.white;
 		public bool waitUntilFinished = true;
 

Assets/Fungus/Sprite/Commands/ShowSprite.cs

@@ -0,0 +1,43 @@
+using UnityEngine;
+using System;
+using System.Collections;
+
+namespace Fungus.Script
+{
+	[CommandInfo("Sprite", 
+	             "Show Sprite", 
+	             "Makes a sprite visible / invisible by setting the color alpha.")]
+	public class ShowSprite : FungusCommand 
+	{
+		public SpriteRenderer spriteRenderer;
+		public bool visible = true;
+
+		public override void OnEnter()
+		{
+			if (spriteRenderer != null)
+			{
+				Color spriteColor = spriteRenderer.color;
+				spriteColor.a = visible ? 1f : 0f;
+				spriteRenderer.color = spriteColor;
+			}
+
+			Continue();
+		}
+
+		public override string GetSummary()
+		{
+			if (spriteRenderer == null)
+			{
+				return "Error: No sprite renderer selected";
+			}
+
+			return spriteRenderer.name + " to " + (visible ? "visible" : "invisible");
+		}
+
+		public override Color GetButtonColor()
+		{
+			return new Color32(221, 184, 169, 255);
+		}
+	}
+
+}

Assets/Fungus/Sprite/Commands/ShowSprite.cs.meta

@@ -0,0 +1,8 @@
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+guid: 10cd462c89cb047158ccfb8a8df3f60a
+MonoImporter:
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: