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112         private void MakeAnimationCurves(GameObject root, AnimationClip animClip, Animation animation)
113         {
114             acb = new AnimationCurveBuilder();
115
116             //Get a list of all sprites on this GO
117             var allSprites = root.GetComponentsInChildren(true).Select(sr => AnimationUtility.CalculateTransformPath(sr.transform, root.transform));
118
119             //Add a key for all objects on the first frame
120             SetGameObjectForKey(root, animClip, animation.MainlineKeys.First(), 0);
121
122             foreach (var mainlineKey in animation.MainlineKeys)
123             {
124
125                 var visibleSprites = SetGameObjectForKey(root, animClip, mainlineKey);
126                 var hiddenSprites = allSprites.Except(visibleSprites);
127                 HideSprites(root, hiddenSprites, mainlineKey.Time);
128             }
129
130             switch (animation.LoopType)
131             {
132                 case LoopType.True:
133                     //Cycle back to first frame
134                     SetGameObjectForKey(root, animClip, animation.MainlineKeys.First(), animation.Length);
135                     break;
136                 case LoopType.False:
137                     //Duplicate the last key at the end time of the animation
138                     SetGameObjectForKey(root, animClip, animation.MainlineKeys.Last(), animation.Length);
139                     break;
140                 default:
141                     Debug.LogWarning("Unsupported loop type: " + animation.LoopType.ToString());
142                     break;
143             }
144
145             //Add the curves to our animation clip
146             //NOTE: This MUST be done before modifying the settings, thus the double switch statement
147             acb.AddCurves(animClip);
148
149             foreach (var sprite in spriteChangeKeys)
150             {
151                 if (sprite.Value.Count > 0)
152                 {
153                     BuildSpriteChangeCurve(ref animClip, sprite);
154                 }
155             }
156
157             //Set the loop/wrap settings for the animation clip
158             var animSettings = AnimationUtility.GetAnimationClipSettings(animClip);
159             switch(animation.LoopType)
160             {
161                 case LoopType.True:
162                     animClip.wrapMode = WrapMode.Loop;
163                     animSettings.loopTime = true;
164                     break;
165                 case LoopType.False:
166                     animClip.wrapMode = WrapMode.ClampForever;
167                     break;
168                 case LoopType.PingPong:
169                     animClip.wrapMode = WrapMode.PingPong;
170                     animSettings.loopTime = true;
171                     break;
172                 default:
173                     Debug.LogWarning("Unsupported loop type: " + animation.LoopType.ToString());
174                     break;
175             }
176
177             animClip.SetAnimationSettings(animSettings);
178
179             //Debug.Log(string.Format("Setting animation {0} to {1} loop mode (WrapMode:{2} LoopTime:{3}) ", animClip.name, animation.LoopType, animClip.wrapMode, animSettings.loopTime));
180         }

182         private void HideSprites(GameObject root, IEnumerable relativePaths, float time)
183         {
184             foreach(var relativePath in relativePaths)
185             {
186                 //Find the gameObject based on relative path
187                 var transform = root.transform.Find(relativePath);
188                 if (transform == null)
189                 {
190                     Debug.LogError("ERROR: Unable to find GameObject at relative path " + relativePath);
191                     return;
192                 }
193
194                 var gameObject = transform.gameObject;
195                 gameObject.SetActive(false);
196
197                 acb.SetCurveActiveOnly(root.transform, transform, time);
198             }
199         }