unity查找子物体、子节点、获取子节点对象脚本，添加子节点脚本，添加父节点脚本

分享一个代码管理片段的代码，主要是用于查找子物体，控制子物体等等的。

静态代码片段，便于调用。

不做太多的解释，直接上代码，每个方法都有注释。

有任何问题直接留言，看到会回复 QQ群 207019099 备注“CSDN 查找子物体”

	/// <summary>
    /// 查找子物体
    /// </summary>
    /// <param name="parent"></param>
    /// <param name="childName"></param>
    /// <returns></returns>
    public static Transform FindChild(Transform parent, string childName)
    {

        Transform child = parent.Find(childName);

        if (child != null)
            return child;

        for (int i = 0; i < parent.childCount; i++)
        {
            child = FindChild(parent.GetChild(i), childName);

            if (child != null)
                return child;

        }
        return null;

    }
    /// <summary>
    /// 查找子物体
    /// </summary>
    /// <typeparam name="T"></typeparam>
    /// <param name="parent"></param>
    /// <param name="childName"></param>
    /// <returns></returns>
    public static T FindChild<T>(Transform parent, string childName)
    {
        Transform child = FindChild(parent, childName);

        if (null != child)
            return child.GetComponent<T>();
        else
            return default(T);
    }

    /// <summary>
    /// 查找子节点对象
    /// 内部使用“递归算法”
    /// </summary>
    /// <param name="goParent">父对象</param>
    /// <param name="chiildName">查找的子对象名称</param>
    /// <returns></returns>
    public static Transform FindTheChildNode(GameObject goParent, string chiildName)
    {
        Transform searchTrans = null;                   //查找结果

        searchTrans = goParent.transform.Find(chiildName);
        if (searchTrans == null)
        {
            foreach (Transform trans in goParent.transform)
            {
                searchTrans = FindTheChildNode(trans.gameObject, chiildName);
                if (searchTrans != null)
                {
                    return searchTrans;

                }
            }
        }
        return searchTrans;
    }

    /// <summary>
    /// 获取子节点（对象）脚本
    /// </summary>
    /// <typeparam name="T">泛型</typeparam>
    /// <param name="goParent">父对象</param>
    /// <param name="childName">子对象名称</param>
    /// <returns></returns>
    public static T GetTheChildNodeComponetScripts<T>(GameObject goParent, string childName) where T : Component
    {
        Transform searchTranformNode = null;            //查找特定子节点

        searchTranformNode = FindTheChildNode(goParent, childName);
        if (searchTranformNode != null)
        {
            return searchTranformNode.gameObject.GetComponent<T>();
        }
        else
        {
            return null;
        }
    }

    /// <summary>
    /// 给子节点添加脚本
    /// </summary>
    /// <typeparam name="T"></typeparam>
    /// <param name="goParent">父对象</param>
    /// <param name="childName">子对象名称</param>
    /// <returns></returns>
    public static T AddChildNodeCompnent<T>(GameObject goParent, string childName) where T : Component
    {
        Transform searchTranform = null;                //查找特定节点结果

        //查找特定子节点
        searchTranform = FindTheChildNode(goParent, childName);
        //如果查找成功，则考虑如果已经有相同的脚本了，则先删除，否则直接添加。
        if (searchTranform != null)
        {
            //如果已经有相同的脚本了，则先删除
            T[] componentScriptsArray = searchTranform.GetComponents<T>();
            for (int i = 0; i < componentScriptsArray.Length; i++)
            {
                if (componentScriptsArray[i] != null)
                {
                    Destroy(componentScriptsArray[i]);
                }
            }
            return searchTranform.gameObject.AddComponent<T>();
        }
        else
        {
            return null;
        }
        //如果查找不成功，返回Null.
    }

    /// <summary>
    /// 给子节点添加父对象
    /// </summary>
    /// <param name="parents">父对象的方位</param>
    /// <param name="child">子对象的方法</param>
    public static void AddChildNodeToParentNode(Transform parents, Transform child)
    {
        child.SetParent(parents, false);
        child.localPosition = Vector3.zero;
        child.localScale = Vector3.one;
        child.localEulerAngles = Vector3.zero;
    }