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Unity对象的所有组件深拷贝与粘贴

发表于2017-11-11
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下面给大家分享的是在Unity开发中对象的所有组件深拷贝与粘贴，为了让大家可以了解的更明白，会从单个组件拷贝开始介绍，让大家可以一步步的去了解。

一、Unity 单个组件拷贝

Unity中，经常有对象或预制体，但是想要把某个预制体或对象的组件全部都拷贝到某个新的对象上。 
Unity 虽然已经提供了Copy Component这个功能， 
 
这个功能很不错，可以拷贝粘贴，但是面对某个组件上大量的组件和里面的各种参数调整， 
 
对象或预制体的层级结构深，各层的组件多，参数也纷繁复杂，这个就不太灵光了。 

二、当前层所有组件的拷贝与粘贴

方法很简单的，不就是复制和粘贴么，两步走。 
1.拷贝

  static Component[] copiedComponents;
    [MenuItem("GameObject/Copy Current Components #&C")]
    static void Copy()
    ｛
        copiedComponents = Selection.activeGameObject.GetComponents<Component>();
    ｝

一句话，就是获取当前选中的对象的组件，然后存储于变量中。 
2.粘贴

  [MenuItem("GameObject/Paste Current Components #&P")]
    static void Paste()
    ｛
        foreach (var targetGameObject in Selection.gameObjects)
        ｛
            if (!targetGameObject || copiedComponents == null) continue;
            foreach (var copiedComponent in copiedComponents)
            ｛
                if (!copiedComponent) continue;
                UnityEditorInternal.ComponentUtility.CopyComponent(copiedComponent);
                UnityEditorInternal.ComponentUtility.PasteComponentAsNew(targetGameObject);
            ｝
        ｝
    ｝

这里面干了点啥？基本上都是自解释的句子。使用了UnityEditorInternal的ComponentUtility的函数。

CopyComponent
PasteComponentAsNew

然后在编辑器的GameObject下就可以看到Copy Current Components和Paste Current Components两个菜单了，当然还包括他们的快捷键。 
由于担心与其他快捷键重复，所以Ctrl,Shift,Alt都是用上了。当然你可以根据自己喜好来决定。

三、对象组件的深度复制与粘贴

上面的当前层的拷贝，已经把当前拷贝一个层的问题解决了。 
深度拷贝，当然要深入到对象或预制体的所有子对象进行拷贝了。 
1. 
建立了一个链表来解决层级的问题。

public class MyComponentList
    ｛
        public MyComponentList()
        ｛
        ｝
        public List<Component> gameObjList;
        public List<MyComponentList> nextList;
    ｝


2.拷贝对象组件，包括所有子对象组件内容

    static MyComponentList pri_my_list = new MyComponentList();
    private static void GetAllChilds(GameObject transformForSearch, MyComponentList next)
    ｛
        List<Component> childsOfGameobject = new List<Component>();
        next.gameObjList = childsOfGameobject;
        next.nextList = new List<MyComponentList>();
        foreach (var item in transformForSearch.GetComponents<Component>())
        ｛
            childsOfGameobject.Add(item);
        ｝
        foreach (Transform item in transformForSearch.transform)
        ｛
            MyComponentList tmpnext = new MyComponentList();
            GetAllChilds(item.gameObject, tmpnext);
            next.nextList.Add(tmpnext);
        ｝
        return;
    ｝
   [MenuItem("GameObject/Copy All Components #%&C")]
    static void Copy()
    ｛
        GetAllChilds(Selection.activeGameObject,pri_my_list);
    ｝

3.选择新对象粘贴拷贝内容

    private static void PasteChildComponent(GameObject gameObj, MyComponentList next)
    ｛
        if (next.gameObjList != null)
        ｛
            foreach (var copiedComponent in next.gameObjList)
            ｛
                if (!copiedComponent) continue;
                UnityEditorInternal.ComponentUtility.CopyComponent(copiedComponent);
                UnityEditorInternal.ComponentUtility.PasteComponentAsNew(gameObj);
            ｝
        ｝
        if (next.nextList != null)
        ｛
            List<Transform> TmpListTrans = new List<Transform>();
            foreach (Transform item in gameObj.transform)
            ｛
                TmpListTrans.Add(item);
            ｝
            int i = 0;
            foreach (var item in next.nextList)
            ｛
                if (i < TmpListTrans.Count)
                ｛
                    PasteChildComponent(TmpListTrans[i].gameObject, item);
                ｝
                i++;
            ｝
        ｝
    ｝

稍微罗嗦一下，深度拷贝与粘贴组件都使用了递归调用。 
粘贴的递归过程中，首先粘贴了当前层级的所有组件，方法仍旧使用的是第一种拷贝粘贴的方法。 
然后遍历子对象中的对象，递归调用。 
就是这样。

四、运行截图

五、当前层组件拷贝与粘贴源码

using UnityEngine;
using UnityEditor;
using System.Collections;
public class CopyAllComponent : EditorWindow
｛
    static Component[] copiedComponents;
    [MenuItem("GameObject/Copy Current Components #&C")]
    static void Copy()
    ｛
        copiedComponents = Selection.activeGameObject.GetComponents<Component>();
    ｝
    [MenuItem("GameObject/Paste Current Components #&P")]
    static void Paste()
    ｛
        foreach (var targetGameObject in Selection.gameObjects)
        ｛
            if (!targetGameObject || copiedComponents == null) continue;
            foreach (var copiedComponent in copiedComponents)
            ｛
                if (!copiedComponent) continue;
                UnityEditorInternal.ComponentUtility.CopyComponent(copiedComponent);
                UnityEditorInternal.ComponentUtility.PasteComponentAsNew(targetGameObject);
            ｝
        ｝
    ｝
｝
六、组件的深度拷贝粘贴源码

using UnityEngine;
using UnityEditor;
using System.Collections.Generic;
public class DeepCopyAllComponent : EditorWindow
｛
    [MenuItem("GameObject/Copy All Components #%&C")]
    static void Copy()
    ｛
        GetAllChilds(Selection.activeGameObject,pri_my_list);
    ｝
    [MenuItem("GameObject/Paste All Components #%&P")]
    static void Paste()
    ｛
        GameObject tmpGameObj = Selection.activeGameObject;
        PasteChildComponent(tmpGameObj, pri_my_list);
    ｝
    public class MyComponentList
    ｛
        public MyComponentList()
        ｛
        ｝
        public List<Component> gameObjList;
        public List<MyComponentList> nextList;
    ｝
    private static void PasteChildComponent(GameObject gameObj, MyComponentList next)
    ｛
        if (next.gameObjList != null)
        ｛
            foreach (var copiedComponent in next.gameObjList)
            ｛
                if (!copiedComponent) continue;
                UnityEditorInternal.ComponentUtility.CopyComponent(copiedComponent);
                UnityEditorInternal.ComponentUtility.PasteComponentAsNew(gameObj);
            ｝
        ｝
        if (next.nextList != null)
        ｛
            List<Transform> TmpListTrans = new List<Transform>();
            foreach (Transform item in gameObj.transform)
            ｛
                TmpListTrans.Add(item);
            ｝
            int i = 0;
            foreach (var item in next.nextList)
            ｛
                if (i < TmpListTrans.Count)
                ｛
                    PasteChildComponent(TmpListTrans[i].gameObject, item);
                ｝
                i++;
            ｝
        ｝
    ｝
    static MyComponentList pri_my_list = new MyComponentList();
    private static void GetAllChilds(GameObject transformForSearch, MyComponentList next)
    ｛
        List<Component> childsOfGameobject = new List<Component>();
        next.gameObjList = childsOfGameobject;
        next.nextList = new List<MyComponentList>();
        foreach (var item in transformForSearch.GetComponents<Component>())
        ｛
            childsOfGameobject.Add(item);
        ｝
        foreach (Transform item in transformForSearch.transform)
        ｛
            MyComponentList tmpnext = new MyComponentList();
            GetAllChilds(item.gameObject, tmpnext);
            next.nextList.Add(tmpnext);
        ｝
        return;
    ｝
｝

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