/******************************************************************************
 * Spine Runtimes Software License v2.5
 *
 * Copyright (c) 2013-2016, Esoteric Software
 * All rights reserved.
 *
 * You are granted a perpetual, non-exclusive, non-sublicensable, and
 * non-transferable license to use, install, execute, and perform the Spine
 * Runtimes software and derivative works solely for personal or internal
 * use. Without the written permission of Esoteric Software (see Section 2 of
 * the Spine Software License Agreement), you may not (a) modify, translate,
 * adapt, or develop new applications using the Spine Runtimes or otherwise
 * create derivative works or improvements of the Spine Runtimes or (b) remove,
 * delete, alter, or obscure any trademarks or any copyright, trademark, patent,
 * or other intellectual property or proprietary rights notices on or in the
 * Software, including any copy thereof. Redistributions in binary or source
 * form must include this license and terms.
 *
 * THIS SOFTWARE IS PROVIDED BY ESOTERIC SOFTWARE "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 ESOTERIC SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, BUSINESS INTERRUPTION, OR LOSS OF
 * USE, DATA, OR PROFITS) 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.
 *****************************************************************************/

module spine {
	export class AnimationStateData {
		skeletonData: SkeletonData;
		animationToMixTime: Map<number> = { };
		defaultMix = 0;

		constructor (skeletonData: SkeletonData) {
			if (skeletonData == null) throw new Error("skeletonData cannot be null.");
			this.skeletonData = skeletonData;
		}

		setMix (fromName: string, toName: string, duration: number) {
			let from = this.skeletonData.findAnimation(fromName);
			if (from == null) throw new Error("Animation not found: " + fromName);
			let to = this.skeletonData.findAnimation(toName);
			if (to == null) throw new Error("Animation not found: " + toName);
			this.setMixWith(from, to, duration);
		}

		setMixWith (from: Animation, to: Animation, duration: number) {
			if (from == null) throw new Error("from cannot be null.");
			if (to == null) throw new Error("to cannot be null.");
			let key = from.name + to.name;
			this.animationToMixTime[key] = duration;
		}

		getMix (from: Animation, to: Animation) {
			let key = from.name + to.name;
			let value = this.animationToMixTime[key];
			return value === undefined ? this.defaultMix : value;
		}
	}
}