复制、粘贴一个物体的所有组件

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

public class CopyAllComponent : EditorWindow
{
    static Component[] copiedComponents;
    [MenuItem("GameObject/Copy Current Components",false,10)]
    static void Copy()
    {
        copiedComponents = Selection.activeGameObject.GetComponents<Component>();
    }

    [MenuItem("GameObject/Paste Current Components",false,10)]
    static void Paste()
    {
        foreach (var targetGameObject in Selection.gameObjects)
        {
            if (!targetGameObject || copiedComponents == null) continue;

            var targetComponents = new List<Component>(targetGameObject.GetComponents<Component>());

            foreach (var copiedComponent in copiedComponents)
            {
                if (!copiedComponent) continue;

                var targetComponent = targetComponents.Find((item) => item.GetType() == copiedComponent.GetType());

                UnityEditorInternal.ComponentUtility.CopyComponent(copiedComponent);

                if (targetComponent != null)
                {
                    UnityEditorInternal.ComponentUtility.PasteComponentValues(targetComponent);
                }
                else
                {
                    UnityEditorInternal.ComponentUtility.PasteComponentAsNew(targetGameObject);
                }
            }
        }
    }

}