unity3d自动生成2D动画

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关于自动生成动画，雨松MOMO有一篇比较完整的文章了，链接在此点击打开链接
生成AnimationClip、Controller以及设置State等都是参考了他提供的代码，这里我主要补充一下如何给2d texture设置锚点。
这里主要看代码吧，值得一提的是，设置自定义锚点必须将spriteAlignment设置为9（customer），否则设置的pivot将不起作用。
    [MenuItem("JyGame/BuildClip")]    static void BuildClip()    {        //AnimationXml xml = ResourceManager.Get        ResourceManager.Init();        List<string> actionList = new List<string>();        foreach(var d in TargetDir.GetDirectories())        {            string animationName = d.Name;            Debug.Log("building " + animationName);            if (ResourceManager.Get<JyGame.AnimationNode>(animationName) == null)            {                Debug.LogWarning("错误, 找不到xml中锚点描述!" + animationName);                continue;            }            //调整锚点            foreach(var f in new DirectoryInfo(d.FullName + "\\rawdata").GetFiles("*.png"))            {                string[] paras = f.Name.Replace(".png","").Split('-');                string animation = paras[0];                string action = paras[1];                int count = int.Parse(paras[2]);                AnimationImage img = null;                try                {                    img = ResourceManager.Get<JyGame.AnimationNode>(animation).GetGroup(action).images[count];                }                catch                {                    Debug.Log("找不到文件对应的描述,删除" + f.FullName);                    File.Delete(f.FullName);                    continue;                }                string path = DataPathToAssetPath(f.FullName);                TextureImporter textureImporter = AssetImporter.GetAtPath(path) as TextureImporter;                TextureImporterSettings tis = new TextureImporterSettings();                textureImporter.ReadTextureSettings(tis);                tis.spriteAlignment = 9; //customer                tis.spritePixelsPerUnit = 1;                tis.mipmapEnabled = false;                tis.spritePivot = new Vector2((float)img.anchorx / img.w, (float)(img.h - img.anchory) / img.h);                textureImporter.SetTextureSettings(tis);                if(!actionList.Contains(action))                {                    actionList.Add(action);                }                AssetDatabase.ImportAsset(path);            }            List<AnimationClip> clips = new List<AnimationClip>();            //创建clip            foreach(var action in actionList)            {                FileInfo[] images = new DirectoryInfo(d.FullName + "\\rawdata").GetFiles(string.Format("*-{0}-*.png",action));                AnimationClip clip = new AnimationClip();                AnimationUtility.SetAnimationType(clip, ModelImporterAnimationType.Generic);                EditorCurveBinding curveBinding = new EditorCurveBinding();                curveBinding.type = typeof(SpriteRenderer);                curveBinding.path = "";                curveBinding.propertyName = "m_Sprite";                ObjectReferenceKeyframe[] keyFrames = new ObjectReferenceKeyframe[images.Length];                float frameTime = 1 / 10f;                if(action == "stand")                {                    frameTime = 1 / 4f;                }                for (int i = 0; i < images.Length; i++)                {                    Sprite sprite = Resources.LoadAssetAtPath<Sprite>(DataPathToAssetPath(images[i].FullName));                    keyFrames[i] = new ObjectReferenceKeyframe();                    keyFrames[i].time = frameTime * i;                    keyFrames[i].value = sprite;                }                                clip.frameRate = 10;                if (action == "stand") clip.frameRate = 4;                if (action != "attack")                {                    //设置idle文件为循环动画                    SerializedObject serializedClip = new SerializedObject(clip);                    AnimationClipSettings clipSettings = new AnimationClipSettings(serializedClip.FindProperty("m_AnimationClipSettings"));                    clipSettings.loopTime = true;                    serializedClip.ApplyModifiedProperties();                }                  AnimationUtility.SetObjectReferenceCurve(clip, curveBinding, keyFrames);                AssetDatabase.CreateAsset(clip, TARGET_DIR + animationName + "\\" + action + ".anim");                clips.Add(clip);                AssetDatabase.SaveAssets();            }            //创建controller            AnimatorController animatorController =                AnimatorController.CreateAnimatorControllerAtPath(TARGET_DIR + animationName + "\\controller.controller");            AnimatorControllerLayer layer = animatorController.GetLayer(0);            UnityEditorInternal.StateMachine sm = layer.stateMachine;            //animatorController.AddParameter("attack", AnimatorControllerParameterType.Trigger);            //animatorController.AddParameter("move", AnimatorControllerParameterType.Trigger);            //animatorController.AddParameter("stand", AnimatorControllerParameterType.Trigger);            State standState = null;            State attackState = null;            State moveState = null;            foreach (AnimationClip newClip in clips)            {                                State state = sm.AddState(newClip.name);                state.SetAnimationClip(newClip, layer);                if (newClip.name == "stand")                {                    sm.defaultState = state;                    standState = state;                }else if(newClip.name =="move")                {                    moveState = state;                }else if(newClip.name == "attack")                {                    attackState = state;                }                Transition trans = sm.AddAnyStateTransition(state);                trans.RemoveCondition(0);            }            if(attackState != null && standState!=null)            {                var trans = sm.AddTransition(attackState, standState);                //var condition = trans.AddCondition();                //condition.mode = TransitionConditionMode.ExitTime;            }            AssetDatabase.SaveAssets();            //生成Prefab 添加一张预览用的Sprite            FileInfo tagImage = new DirectoryInfo(d.FullName + "\\rawdata").GetFiles("*.png")[0];            GameObject go = new GameObject();            go.name = animationName;            SpriteRenderer spriteRender = go.AddComponent<SpriteRenderer>();            spriteRender.sprite = Resources.LoadAssetAtPath<Sprite>(DataPathToAssetPath(tagImage.FullName));            Animator animator = go.AddComponent<Animator>();            animator.runtimeAnimatorController = animatorController;            PrefabUtility.CreatePrefab(TARGET_DIR + animationName + "/sprite.prefab", go);            DestroyImmediate(go);        }    }    public static string DataPathToAssetPath(string path)    {        if (Application.platform == RuntimePlatform.WindowsEditor)            return path.Substring(path.IndexOf("Assets\\"));        else            return path.Substring(path.IndexOf("Assets/"));    }    class AnimationClipSettings    {        SerializedProperty m_Property;        private SerializedProperty Get(string property) { return m_Property.FindPropertyRelative(property); }        public AnimationClipSettings(SerializedProperty prop) { m_Property = prop; }        public float startTime { get { return Get("m_StartTime").floatValue; } set { Get("m_StartTime").floatValue = value; } }        public float stopTime { get { return Get("m_StopTime").floatValue; } set { Get("m_StopTime").floatValue = value; } }        public float orientationOffsetY { get { return Get("m_OrientationOffsetY").floatValue; } set { Get("m_OrientationOffsetY").floatValue = value; } }        public float level { get { return Get("m_Level").floatValue; } set { Get("m_Level").floatValue = value; } }        public float cycleOffset { get { return Get("m_CycleOffset").floatValue; } set { Get("m_CycleOffset").floatValue = value; } }        public bool loopTime { get { return Get("m_LoopTime").boolValue; } set { Get("m_LoopTime").boolValue = value; } }        public bool loopBlend { get { return Get("m_LoopBlend").boolValue; } set { Get("m_LoopBlend").boolValue = value; } }        public bool loopBlendOrientation { get { return Get("m_LoopBlendOrientation").boolValue; } set { Get("m_LoopBlendOrientation").boolValue = value; } }        public bool loopBlendPositionY { get { return Get("m_LoopBlendPositionY").boolValue; } set { Get("m_LoopBlendPositionY").boolValue = value; } }        public bool loopBlendPositionXZ { get { return Get("m_LoopBlendPositionXZ").boolValue; } set { Get("m_LoopBlendPositionXZ").boolValue = value; } }        public bool keepOriginalOrientation { get { return Get("m_KeepOriginalOrientation").boolValue; } set { Get("m_KeepOriginalOrientation").boolValue = value; } }        public bool keepOriginalPositionY { get { return Get("m_KeepOriginalPositionY").boolValue; } set { Get("m_KeepOriginalPositionY").boolValue = value; } }        public bool keepOriginalPositionXZ { get { return Get("m_KeepOriginalPositionXZ").boolValue; } set { Get("m_KeepOriginalPositionXZ").boolValue = value; } }        public bool heightFromFeet { get { return Get("m_HeightFromFeet").boolValue; } set { Get("m_HeightFromFeet").boolValue = value; } }        public bool mirror { get { return Get("m_Mirror").boolValue; } set { Get("m_Mirror").boolValue = value; } }    }
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