Unity 自动生成Prefab

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

using System.IO;
using System.Text;

using UnityEditor;
using UnityEditor.Animations;

/// <summary>
/// 自动生成Prefab，只需要资源按照一定的目录规范就可以
/// </summary>
public static class PrefabTools
{
[MenuItem("KTools/Prefab生成", false, 100)]
public static void GenerateCode()
{
// YanLingFaShi假定是每个模型的资源根目录
// 根据选择的目录文件，其中包含了FBX文件，程序生成的controller文件，自动生成prefab，绑定animator
string targetPath = @"Assets\Resources\Prefabs";

Object[] objects = Selection.GetFiltered(typeof(object), SelectionMode.Assets);
if (objects.Length == 0)
{
Debug.LogWarning("请选择资源目录后再进行操作");
return;
}

foreach (var obj in objects)
{
string assetPath = AssetDatabase.GetAssetPath(obj);
string parentName = Path.GetDirectoryName(assetPath);
parentName = Path.GetFileNameWithoutExtension(parentName);

string ctrlName = Path.GetFileNameWithoutExtension(assetPath);
Debug.LogWarning("处理目录：" + assetPath);
//Debug.LogWarning(parentName);
//Debug.LogWarning(ctrlName);

CreatePrefab(assetPath, targetPath + $"/{parentName}/{ctrlName}.prefab");
}

AssetDatabase.Refresh();
AssetDatabase.SaveAssets();
}

/// <summary>
/// 创建模型Prefab，可以对应创建规则内的Materials,绑定贴图等等
/// </summary>
/// <param name="path"></param>
/// <param name="outPath"></param>
public static bool CreatePrefab(string path, string outPath)
{
EditorPathUtils.SaveCreateFolder(Path.GetDirectoryName(outPath));

// 该筛选器字符串可以包含：名称、资产标签(l)和类型（t类名称）的搜索数据
// Mesh AnimationClip Material，等等都在里面
string[] fbxGUIDs = AssetDatabase.FindAssets("t:Object", new string[] { path });
//string[] ctrlGUIDs = AssetDatabase.FindAssets("t:AnimatorController", new string[] { path });

// 提取fbx目录和controller目录
string fbxPath = null;
string ctrlPath = null;
foreach (var v in fbxGUIDs)
{
string path1 = AssetDatabase.GUIDToAssetPath(v);
string fileExt = Path.GetExtension(path1);
if (fileExt.Equals(".fbx", System.StringComparison.CurrentCultureIgnoreCase))
{
fbxPath = path1;
//Debug.Log(path1);
}
else if (fileExt.Equals(".controller", System.StringComparison.CurrentCultureIgnoreCase))
{
ctrlPath = path1;
}
}

if (string.IsNullOrEmpty(fbxPath))
{
Debug.LogWarning("该资源不存在对应的fbx文件，跳过生成， path =" + path);
return false;
}

Object asset = AssetDatabase.LoadAssetAtPath<Object>(fbxPath);

GameObject gobj = (GameObject)GameObject.Instantiate(asset);
//gobj.name = asset.name;

EditorUtility.SetDirty(gobj);
// 如果path对应的目录下有动画控制器文件，那么自动添加animator
if (!string.IsNullOrEmpty(ctrlPath))
{
// 先判断一下，Unity默认有可能会创建这个组件
Animator anim = gobj.GetComponent<Animator>();
if (!anim)
{
anim = gobj.AddComponent<Animator>();
}
AnimatorController ctrl = AssetDatabase.LoadAssetAtPath<AnimatorController>(ctrlPath);
anim.runtimeAnimatorController = ctrl;
}
else
{
Animator anim = gobj.GetComponent<Animator>();
if (null != anim)
{
GameObject.DestroyImmediate(anim);
Debug.LogWarning("该Prefab不应该生成Animator组件，自动删除， path =" + path);
}
}

PrefabUtility.SaveAsPrefabAsset(gobj, outPath);

GameObject.DestroyImmediate(gobj);
return true;
}
}