Resource的使用

一、资源文件位置

位于Resource文件夹下。Resource文件夹的位置没有强制约束。

二、加载Resource文件

1、同步加载文件

//path:不包含拓展名
Resources.Load(path);

2、异步加载文件

ResourceRequest request = Resources.LoadAsync<T>(path);
yield return request;

三、代码

using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Text;
using UnityEngine;
using UnityEngine.Events;
using Net.Realmoon.Singleton;
using Net.Realmoon.Mono;

namespace Net.Realmoon.IO.Resource
{
    /// <summary>
    /// resource工具类
    /// </summary>
    public class ResourceLoadTools : SingletonBase<ResourceLoadTools>
    {
        private Dictionary<string, GameObject> cacheMap;
        protected override void Init()
        {
            base.Init();
            cacheMap = new Dictionary<string, GameObject>();
        }

        #region 同步加载
        /// <summary>
        /// 同步加载资源
        /// </summary>
        /// <param name="path"></param>
        /// <returns></returns>
        public Object Load(string path)
        {
            Object res = Resources.Load(path);
            //gameobject 实例化后再返回
            if (res is GameObject)
            {
                return GameObject.Instantiate(res);
            }
            else
            {
                //不需要实例化的对象
                return res;
            }
        }
        /// <summary>
        /// 同步加载资源
        /// </summary>
        /// <param name="path"></param>
        /// <returns></returns>
        public Object Load(string path, System.Type type)
        {
            Object res = Resources.Load(path, type);
            //gameobject 实例化后再返回
            if (res is GameObject)
            {
                return GameObject.Instantiate(res);
            }
            else
            {
                Debug.Log("同步加载了");
                //不需要实例化的对象
                return res;
            }
        }

        //同步加载资源
        public T Load<T>(string path, bool isCreateGameObject = true) where T : Object
        {
            T res = Resources.Load<T>(path);
            //gameobject 实例化后再返回
            if (res is GameObject && isCreateGameObject)
            {
                return GameObject.Instantiate(res);
            }
            else
            {
                //不需要实例化的对象
                return res;
            }
        }

        //同步加载资源
        public T Load<T>(string path, Transform parent) where T : Object
        {
            T res = Resources.Load<T>(path);
            //gameobject 实例化后再返回
            if (res is GameObject)
            {
                return GameObject.Instantiate(res, parent);
            }
            else
            {
                //不需要实例化的对象
                return res;
            }
        }


        /// <summary>
        /// 读取Resource中的文件
        /// </summary>
        /// <param name="path"></param>
        /// <returns></returns>
        public string ReadResourceFile(string path)
        {
            TextAsset ta = Resources.Load<TextAsset>(path);
            if (ta != null)
            {
                return ta.text;
            }
            else
            {
                return "";
            }
        }

        #endregion


        //资源异步加载
        public void LoadAsync<T>(string path, UnityAction<T> callback) where T : Object
        {
            MonoTools.Instance.StartCoroutine(ReallyLoadAsync<T>(path, callback));
        }

        private IEnumerator ReallyLoadAsync<T>(string path, UnityAction<T> callback) where T : Object
        {
            ResourceRequest request = Resources.LoadAsync<T>(path);
            yield return request;

            if (request.asset is GameObject)
            {
                callback(GameObject.Instantiate(request.asset) as T);
            }
            else
            {
                callback(request.asset as T);
            }
        }
    }
}