/******************************************************************************
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* Spine Runtimes License Agreement
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* Last updated July 28, 2023. Replaces all prior versions.
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*
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* Copyright (c) 2013-2023, Esoteric Software LLC
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*
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* Integration of the Spine Runtimes into software or otherwise creating
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* derivative works of the Spine Runtimes is permitted under the terms and
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* conditions of Section 2 of the Spine Editor License Agreement:
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* http://esotericsoftware.com/spine-editor-license
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*
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* Otherwise, it is permitted to integrate the Spine Runtimes into software or
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* otherwise create derivative works of the Spine Runtimes (collectively,
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* "Products"), provided that each user of the Products must obtain their own
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* Spine Editor license and redistribution of the Products in any form must
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* include this license and copyright notice.
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*
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* THE SPINE RUNTIMES ARE PROVIDED BY ESOTERIC SOFTWARE LLC "AS IS" AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL ESOTERIC SOFTWARE LLC BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES,
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* BUSINESS INTERRUPTION, OR LOSS OF USE, DATA, OR PROFITS) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THE
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* SPINE RUNTIMES, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*****************************************************************************/
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using System;
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using System.Collections.Generic;
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namespace Spine {
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/// <summary>Stores mix (crossfade) durations to be applied when AnimationState animations are changed.</summary>
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public class AnimationStateData {
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internal SkeletonData skeletonData;
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readonly Dictionary<AnimationPair, float> animationToMixTime = new Dictionary<AnimationPair, float>(AnimationPairComparer.Instance);
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internal float defaultMix;
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/// <summary>The SkeletonData to look up animations when they are specified by name.</summary>
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public SkeletonData SkeletonData { get { return skeletonData; } }
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/// <summary>
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/// The mix duration to use when no mix duration has been specifically defined between two animations.</summary>
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public float DefaultMix { get { return defaultMix; } set { defaultMix = value; } }
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public AnimationStateData (SkeletonData skeletonData) {
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if (skeletonData == null) throw new ArgumentException("skeletonData cannot be null.", "skeletonData");
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this.skeletonData = skeletonData;
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}
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/// <summary>Sets a mix duration by animation names.</summary>
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public void SetMix (string fromName, string toName, float duration) {
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Animation from = skeletonData.FindAnimation(fromName);
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if (from == null) throw new ArgumentException("Animation not found: " + fromName, "fromName");
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Animation to = skeletonData.FindAnimation(toName);
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if (to == null) throw new ArgumentException("Animation not found: " + toName, "toName");
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SetMix(from, to, duration);
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}
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/// <summary>Sets a mix duration when changing from the specified animation to the other.
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/// See TrackEntry.MixDuration.</summary>
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public void SetMix (Animation from, Animation to, float duration) {
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if (from == null) throw new ArgumentNullException("from", "from cannot be null.");
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if (to == null) throw new ArgumentNullException("to", "to cannot be null.");
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AnimationPair key = new AnimationPair(from, to);
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animationToMixTime.Remove(key);
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animationToMixTime.Add(key, duration);
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}
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/// <summary>
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/// The mix duration to use when changing from the specified animation to the other,
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/// or the DefaultMix if no mix duration has been set.
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/// </summary>
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public float GetMix (Animation from, Animation to) {
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if (from == null) throw new ArgumentNullException("from", "from cannot be null.");
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if (to == null) throw new ArgumentNullException("to", "to cannot be null.");
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AnimationPair key = new AnimationPair(from, to);
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float duration;
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if (animationToMixTime.TryGetValue(key, out duration)) return duration;
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return defaultMix;
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}
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public struct AnimationPair {
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public readonly Animation a1;
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public readonly Animation a2;
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public AnimationPair (Animation a1, Animation a2) {
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this.a1 = a1;
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this.a2 = a2;
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}
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public override string ToString () {
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return a1.name + "->" + a2.name;
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}
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}
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// Avoids boxing in the dictionary.
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public class AnimationPairComparer : IEqualityComparer<AnimationPair> {
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public static readonly AnimationPairComparer Instance = new AnimationPairComparer();
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bool IEqualityComparer<AnimationPair>.Equals (AnimationPair x, AnimationPair y) {
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return ReferenceEquals(x.a1, y.a1) && ReferenceEquals(x.a2, y.a2);
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}
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int IEqualityComparer<AnimationPair>.GetHashCode (AnimationPair obj) {
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// from Tuple.CombineHashCodes // return (((h1 << 5) + h1) ^ h2);
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int h1 = obj.a1.GetHashCode();
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return (((h1 << 5) + h1) ^ obj.a2.GetHashCode());
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}
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}
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}
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}
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