将animator改为animation

最近由于项目需要，要将以前实现ui动画的animator全部改为animation组件。

思路：（1）获取目标路径内的所有object路径，在场景内生成ui预制体，查找并替换所有animator为animation，删除原prefab，由场景内的gameobject在原文件位置生成同名预制体，保存。

（2）由于animator使用的animationclip的legacy属性为false，不能再animation上使用，又由于手动在debug界面上修改此值，运行一次后会还原，故将所有animationclip使用代码复制一份并设置legacy，删除原clip并在原文件位置保存。

以下为代码：

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using System.IO;
using UnityEditor;

public class Animator2Animation : MonoBehaviour {

	// Use this for initialization
	void Start () {
        Invoke("ChangeClipForAnimation", 3);
	}
	



    /// <summary>
    /// 将目录内所有的animationClip复制一份，将其legacy设置为true，保存同名clip并删除旧的animationclip
    /// </summary>
    public void ChangeClipForAnimation()
    {
        print("change Clip start !!!");
        //获取所有object的路径
        string[] allPath = Directory.GetFiles(Application.dataPath + "/animator2animation", "*", SearchOption.AllDirectories);
        //循环遍历每一个路径，单独加载
        foreach (string strobjPath in allPath)
        {
            if (strobjPath.EndsWith(".anim"))
            {
                //替换路径中的反斜杠为正斜杠       
                string strTempPath = strobjPath.Replace(@"\", "/");
                //截取我们需要的路径
                strTempPath = strTempPath.Substring(strTempPath.IndexOf("Assets"));
                //根据路径加载资源
                Object obj = AssetDatabase.LoadAssetAtPath(@strTempPath, typeof(Object));
                AnimationClip clip = obj as AnimationClip;
                AnimationClip newclip = new AnimationClip();
                newclip.name = clip.name;
                newclip.legacy = true;
                AnimationClipSettings clipSetting = AnimationUtility.GetAnimationClipSettings(clip);//获取AnimationClipSettings

                AnimationUtility.SetAnimationClipSettings(newclip, clipSetting);//设置新clip的AnimationClipSettings

                newclip.frameRate = clip.frameRate;//设置新clip的帧率

                EditorCurveBinding[] curveBindings = AnimationUtility.GetCurveBindings(clip);//获取clip的curveBinds

                for (int i = 0; i < curveBindings.Length; i++)
                {
                    AnimationUtility.SetEditorCurve(newclip, curveBindings[i], AnimationUtility.GetEditorCurve(clip, curveBindings[i]));//设置新clip的curve
                }

                GameObject.DestroyImmediate(clip, true);
                strTempPath = strTempPath.Substring(0, strTempPath.LastIndexOf('/'));
                AssetDatabase.CreateAsset(newclip, strTempPath + "/" + newclip.name + ".anim");
            }
        }
        print("change clip over!!!");
    }

    /// <summary>
    /// 此方法会：（1）将目录内所有的prefab在场景内生成，查找其包含的animator并修改为animation，将原prefab删除并在原位置生成新的同名prefab
    ///           （2）将目录内所有的animationClip复制一份，将其legacy设置为true，保存同名clip并删除旧的animationclip
    /// </summary>
    public void AnimatorTurnToAnimation()
    {
        print("Animator to Animation start !!!");
        //获取所有object的路径
        string[] allPath = Directory.GetFiles(Application.dataPath + "/YLResources/Prefabs/UI", "*", SearchOption.AllDirectories);
        //循环遍历每一个路径，单独加载
        foreach (string strobjPath in allPath)
        {
            if (strobjPath.EndsWith(".prefab"))
            {
                bool needsave = false;
                //替换路径中的反斜杠为正斜杠       
                string strTempPath = strobjPath.Replace(@"\", "/");
                //截取我们需要的路径
                strTempPath = strTempPath.Substring(strTempPath.IndexOf("Assets"));
                //根据路径加载资源
                Object obj = AssetDatabase.LoadAssetAtPath(@strTempPath, typeof(Object));


                GameObject prefab = obj as GameObject;
                GameObject newprefab = Instantiate(prefab) as GameObject;
                newprefab.name = prefab.name;
                Animator animator = newprefab.GetComponent<Animator>();
                if (animator != null)
                {
                    needsave = true;
                    Change(animator);
                }
                Animator[] animators = newprefab.GetComponentsInChildren<Animator>(true);
                if (animators != null && animators.Length > 0)
                {
                    needsave = true;
                    foreach (Animator item in animators)
                    {
                        Change(item);
                    }
                }
                if (needsave == true)
                {
                    GameObject.DestroyImmediate(prefab, true);
                    strTempPath = strTempPath.Substring(0, strTempPath.LastIndexOf('/'));
                    //AssetDatabase.CreateAsset(newprefab, strTempPath + "/" + newprefab.name + ".prefab");
                    PrefabUtility.CreatePrefab(strTempPath + "/" + newprefab.name + ".prefab", newprefab);
                    LoggerHelper.Debug(strTempPath + "/" + newprefab.name + ".prefab");
                }
                GameObject.DestroyImmediate(newprefab);
            }
        }


        foreach (string strobjPath in allPath)
        {
            if (strobjPath.EndsWith(".anim"))
            {
                //替换路径中的反斜杠为正斜杠       
                string strTempPath = strobjPath.Replace(@"\", "/");
                //截取我们需要的路径
                strTempPath = strTempPath.Substring(strTempPath.IndexOf("Assets"));
                //根据路径加载资源
                Object obj = AssetDatabase.LoadAssetAtPath(@strTempPath, typeof(Object));
                AnimationClip clip = obj as AnimationClip;
                //if (clip.legacy == false)
                //{
                    AnimationClip newclip = new AnimationClip();
                    newclip.name = clip.name;
                    newclip.legacy = true;
                    AnimationClipSettings clipSetting = AnimationUtility.GetAnimationClipSettings(clip);//获取AnimationClipSettings

                    AnimationUtility.SetAnimationClipSettings(newclip, clipSetting);//设置新clip的AnimationClipSettings

                    newclip.frameRate = clip.frameRate;//设置新clip的帧率

                    EditorCurveBinding[] curveBindings = AnimationUtility.GetCurveBindings(clip);//获取clip的curveBinds

                    for (int i = 0; i < curveBindings.Length; i++)
                    {
                        AnimationUtility.SetEditorCurve(newclip, curveBindings[i], AnimationUtility.GetEditorCurve(clip, curveBindings[i]));//设置新clip的curve
                    }

                    GameObject.DestroyImmediate(clip, true);
                    strTempPath = strTempPath.Substring(0, strTempPath.LastIndexOf('/'));
                    AssetDatabase.CreateAsset(newclip, strTempPath + "/" + newclip.name + ".anim");
                //}
            }
        }

        AssetDatabase.SaveAssets();
        AssetDatabase.Refresh();
        print("Animator to Animation end!");
    }

    public static void Change(Animator animator)
    {
        RuntimeAnimatorController ac = animator.runtimeAnimatorController;
        if (ac != null)
        {
            AnimationClip[] tAnimationClips = ac.animationClips;
            if (tAnimationClips != null && tAnimationClips.Length > 0)
            {
                Animation animation = animator.gameObject.GetComponent<Animation>(true);
                foreach (AnimationClip clip in tAnimationClips)
                {
                    //不改成true无法添加到animation组件上，但是改动了以后运行一次又会还原，所以只能代码创建新的同名clip，把数据复制进去同时将此值设为true，再将原clip删除就可以了
                    clip.legacy = true;
                    animation.AddClip(clip, clip.name);
                }
                GameObject.DestroyImmediate(animator, true);
            }
        }
    }
}