Replace Sprites in Animation

gistfile1.cs

	
	public static Sprite GetSpriteWithWordReplaced(Sprite sprite, string word, string replaceBy)
	{
		string assetPath = AssetDatabase.GetAssetPath(sprite);
		string spriteName = sprite.name;
		string newName = spriteName.Replace(word, replaceBy);
		string newPath = assetPath.Replace(word, replaceBy);
		foreach (Object assetObject in AssetDatabase.LoadAllAssetsAtPath(newPath))
		{
			Sprite newSprite = assetObject as Sprite;
			if (newSprite != null)
			{
				if (newSprite.name == newName)
				{
					return newSprite;
				}
			}
		}
		return null;
	}
	
	[MenuItem("Kingdom/Create Queen Animation")]
	static void CreateQueenAnimation()
	{
		foreach (string guid in Selection.assetGUIDs)
		{
			string path = AssetDatabase.GUIDToAssetPath(guid);
			
			AnimationClip clip = (AnimationClip) AssetDatabase.LoadAssetAtPath(path, typeof(AnimationClip));
			if (clip != null)
			{
				string newPath = path.Replace("king", "queen");
				
				AnimationClip newClip = (AnimationClip) AssetDatabase.LoadAssetAtPath(newPath, typeof(AnimationClip));
				if (newClip == null)
				{
					Debug.LogFormat("Please create animation at {0} first.", newPath);
					return;
				}
				newClip.frameRate = clip.frameRate;
				
				foreach (var binding in AnimationUtility.GetObjectReferenceCurveBindings(clip))
				{
					ObjectReferenceKeyframe[] keyframes = AnimationUtility.GetObjectReferenceCurve(clip, binding);
					for (int i = 0; i < keyframes.Length; i++)
					{
						Sprite sprite = keyframes[i].value as Sprite;
						Sprite newSprite = GetSpriteWithWordReplaced(sprite, "king", "queen");
						if (newSprite == null)
						{
							Debug.LogFormat("Counterpart not found for {0}.", sprite);
							return;
						}
						keyframes[i].value = newSprite; 
					}
					AnimationUtility.SetObjectReferenceCurve(newClip, binding, keyframes);
				}
				AssetDatabase.SaveAssets();
			}		
		}
	}