using System;
using System.Collections.Generic;
using System.Text;

namespace UnityEngine
{
    /// <summary>
    /// GameObject的扩展
    /// </summary>
    public static class GameObjectExtension
    {
        /// <summary>
        /// 获取组件的操作,如果有则直接获取,没有,则添加
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="go"></param>
        /// <returns></returns>
        public static T RequireComponent<T>(this GameObject go) where T:Component
        {
            var cm = go.GetComponent<T>();
            if (cm == null)
            {
                cm = go.AddComponent<T>(); 
            }
            return cm;
        }
    }
}