【Unity】生成AB包，加载AB包_业界新闻

发布时间:2024-07-17 23:20

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一、描述

1、Unity中可以将模型、地形、动画、贴图、shader等之类的资源加载成 AssetBundle  2、AssetBundle 是一种资源压缩包 3、使用AB包可以减小安装包的大小，资源可以在进入游戏的初始时进行网络下载或者更新 4、具体的AssetBundle 相关细节知识可百度查询，这里边我只介绍怎么用代码实现生成AB包和加载AB包

二、生成 AssetBundle（AB）包

首先，将模型或者地形拖成prefab，动画、shader、UI等资源不需要拖成prefab
选中需要打包的资源，点击unity菜单栏——Tools——打包工具
弹出打包界面后选择【打包】按钮即可，最终生成.p的AB包，位置在【StreamingAssets/Dabao/】

三、加载 AssetBundle（AB）包

加载AB包之前
如果是本地加载，则可以把需要加载的AB包提前放在指定文件夹中（需要和代码中设置的路径一致）；
如果是远端加载，则可以直接从远端下载到本地，然后再加载
视情况而定，本文用的是直接从本地文件夹中加载

测试脚本【TestLoadModel.cs】

using System.Collections; using System.Collections.Generic; using UnityEngine; using System;  public class TestLoadModel : MonoBehaviour {          /// <summary>     /// 所加载的AB的父物体     /// 可根据自己的项目情况调整     /// </summary>     public GameObject equipParent;          void Start()     {         LoadMode("JDModel",LoadOverStartEvent);         //LoadMode("XXX路", "XXX装备", LoadOverStartEvent);     }      /// <summary>     /// 加载建筑物     /// </summary>     /// <param name="buildName"></param>     /// <param name="finish"></param>     private void LoadMode(string buildName, Action finish)     {         int index = 1;         ResourcesLoadABManager.LoadAssetBundlesAnimAsync(buildName, "", BundleType.Build, (assetBundleObject) =>         {             GameObject obj = null;             if (assetBundleObject != null)             {                 AssetBundle assetBundle = assetBundleObject.assetBundleCreateRequest.assetBundle;                 string[] strs = assetBundleObject.assetBundleCreateRequest.assetBundle.GetAllAssetNames();                 obj = Instantiate(assetBundle.LoadAsset<GameObject>(strs[0]));                 obj.transform.parent = equipParent.transform;                 index--;                 if (index == 0)                 {                     finish?.Invoke();                 }             }         });     }               /// <summary>     /// 加载模型、地形     /// </summary>     /// <param name="terrainName"></param>     /// <param name="equipName"></param>     /// <param name="finish"></param>     private void LoadMode(string terrainName, string equipName, Action finish)     {         int index = 2;         ResourcesLoadABManager.LoadAssetBundlesAnimAsync(terrainName, "", BundleType.Terrain,             (assetBundleObject) =>             {                 Debug.LogError("加载场景中......");                 Debug.LogError("场景名称" + terrainName);                 GameObject obj1 = null;                 if (assetBundleObject != null)                 {                     AssetBundle assetBundle = assetBundleObject.assetBundleCreateRequest.assetBundle;                     string[] strs = assetBundleObject.assetBundleCreateRequest.assetBundle.GetAllAssetNames();                     obj1 = Instantiate(assetBundle.LoadAsset<GameObject>(strs[0]));                     index--;                     if (index == 0)                     {                         finish?.Invoke();                     }                 }             });          ResourcesLoadABManager.LoadAssetBundlesAnimAsync(equipName, "", BundleType.Equip,             (assetBundleObject) =>             {                 Debug.LogError("加载模型中......");                 Debug.LogError("模型名称" + equipName);                 GameObject obj = null;                 if (assetBundleObject != null)                 {                     AssetBundle assetBundle = assetBundleObject.assetBundleCreateRequest.assetBundle;                     string[] strs = assetBundleObject.assetBundleCreateRequest.assetBundle.GetAllAssetNames();                     obj = Instantiate(assetBundle.LoadAsset<GameObject>(strs[0]));                     obj.transform.parent = equipParent.transform;                      Vector3 equip_position = new Vector3(-326.505f, 37.688f, 1875.078f);                     Vector3 rotation = new Vector3(0f, 353.297f, 0f);                                          obj.transform.position = equip_position;                     obj.transform.eulerAngles = rotation;                                          index--;                     if (index == 0)                     {                         finish?.Invoke();                     }                 }             });     }      /// <summary>     /// 加载AB包后开始执行事件     /// </summary>     private void LoadOverStartEvent()     {         Debug.LogError("加载AB包完成，开始事件......");         // TODO...              } }