/*******************************************************************************
 * Copyright (c) 2013, Esoteric Software
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * 
 * 1. Redistributions of source code must retain the above copyright notice, this
 *    list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 ******************************************************************************/

using System;
using System.Collections.Generic;

namespace Spine {
	public class AnimationStateData {
		public SkeletonData SkeletonData { get; private set; }
		private Dictionary<KeyValuePair<Animation, Animation>, float> animationToMixTime = new Dictionary<KeyValuePair<Animation, Animation>, float>();

		public AnimationStateData (SkeletonData skeletonData) {
			SkeletonData = skeletonData;
		}

		public void SetMix (String fromName, String toName, float duration) {
			Animation from = SkeletonData.FindAnimation(fromName);
			if (from == null) throw new ArgumentException("Animation not found: " + fromName);
			Animation to = SkeletonData.FindAnimation(toName);
			if (to == null) throw new ArgumentException("Animation not found: " + toName);
			SetMix(from, to, duration);
		}

		public void SetMix (Animation from, Animation to, float duration) {
			if (from == null) throw new ArgumentNullException("from cannot be null.");
			if (to == null) throw new ArgumentNullException("to cannot be null.");
			animationToMixTime.Add(new KeyValuePair<Animation, Animation>(from, to), duration);
		}

		public float GetMix (Animation from, Animation to) {
			KeyValuePair<Animation, Animation> key = new KeyValuePair<Animation, Animation>(from, to);
			float duration;
			animationToMixTime.TryGetValue(key, out duration);
			return duration;
		}
	}
}