[as3] Store timeline ids inside set in Animation for O(1) lookup. See #1462.

spine-as3/spine-as3/src/spine/animation/Animation.as

@@ -30,10 +30,12 @@
 package spine.animation {
 	import spine.Event;
 	import spine.Skeleton;
+	import flash.utils.Dictionary;
 
 	public class Animation {
 		internal var _name : String;
 		public var _timelines : Vector.<Timeline>;
+		internal var _timelineIds : Dictionary = new Dictionary();
 		public var duration : Number;
 
 		public function Animation(name : String, timelines : Vector.<Timeline>, duration : Number) {
@@ -41,9 +43,15 @@ package spine.animation {
 			if (timelines == null) throw new ArgumentError("timelines cannot be null.");
 			_name = name;
 			_timelines = timelines;
+			for (var i : Number = 0; i < timelines.length; i++)
+				_timelineIds[timelines[i].getPropertyId()] = true;
 			this.duration = duration;
 		}
 		
+		public function hasTimeline(id: Number) : Boolean {
+			return _timelineIds[id] == true;
+		}
+
 		public function get timelines() : Vector.<Timeline> {
 			return _timelines;
 		}

spine-as3/spine-as3/src/spine/animation/AnimationState.as

@@ -664,11 +664,11 @@ package spine.animation {
 				if (contained != null) {
 					timelineMode[i] = AnimationState.SUBSEQUENT;
 				} else if (to == null || timeline is AttachmentTimeline || timeline is DrawOrderTimeline
-					|| timeline is EventTimeline || !hasTimeline(to, intId)) {
+					|| timeline is EventTimeline || !to.animation.hasTimeline(intId)) {
 					timelineMode[i] = AnimationState.FIRST;
 				} else {
 					for (var next : TrackEntry = to.mixingTo; next != null; next = next.mixingTo) {
-						if (hasTimeline(next, intId)) continue;
+						if (next.animation.hasTimeline(intId)) continue;
 						if (entry.mixDuration > 0) {
 							timelineMode[i] = AnimationState.HOLD_MIX;
 							timelineHoldMix[i] = entry;
@@ -681,13 +681,6 @@ package spine.animation {
 			}
 		}
 
-		private static function hasTimeline (entry: TrackEntry, id : int) : Boolean {
-			var timelines : Vector.<Timeline> = entry.animation.timelines;
-			for (var i : int = 0, n : int = entry.animation.timelines.length; i < n; i++)
-				if (timelines[i].getPropertyId() == id) return true;
-			return false;
-		}
-
 		public function getCurrent(trackIndex : int) : TrackEntry {
 			if (trackIndex >= tracks.length) return null;
 			return tracks[trackIndex];