【Unity】生成AB包，加载AB包_unity ab包

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
1
2
3
4

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...
        
    }
}
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113

相关链接

链接：https://pan.baidu.com/s/1a-dKySaisWP2zDTl9pmFIw?pwd=0q58
提取码：0q58
–来自百度网盘超级会员V7的分享

链接：https://pan.baidu.com/s/1FUJMMUIyfUJPiGOpChUcuw?pwd=g3m4
提取码：g3m4
–来自百度网盘超级会员V7的分享