Unity3D中AsyncOperation实现异步场景加载及进度显示优化技巧

1 using System.Collections;
2 using UnityEngine;
3 using UnityEngine.SceneManagement;
4 using UnityEngine.UI;
5
6 public class LoadAwait : MonoBehaviour
7 {
8 public GameObject loadPanel; //载入面板
9 public Slider slider;//滑动条
10 public Text loadMsg;//载入提示信息
11 public GameObject UI_One;
12 public GameObject UI_Two;
13
14 public void LoadNextScence()
15 {
16 StartCoroutine(LoadScence());
17 }
18
19 IEnumerator LoadScence()
20 {
21 UI_One.gameObject.SetActive(false);//对象UI1,没有可忽视
22 UI_Two.gameObject.SetActive(true);//对象UI界面2,没有可忽视
23
24 //显示载入界面
25 loadPanel.SetActive(true);
26
27 //创建异步操作
28 AsyncOperation op = SceneManager.LoadSceneAsync(SceneManager.GetActiveScene().buildIndex + 1);
29
30 //禁止激活下一个场景
31 op.allowSceneActivation = false;
32
33 //如果没有加载完毕
34 while (!op.isDone)
35 {
36 //赋值0-1
37 slider.value = op.progress;
38
39 //显示百分比
40 loadMsg.text = op.progress * 100 + "%";
41
42 //大于等于0.9表示加载完毕
43 if (op.progress >= 0.9f)
44 {
45 //直接修改值为1,表示100%
46 slider.value = 1;
47
48 //修改提示内容
49 loadMsg.text = "请按下任意按键,进入游戏!";
50
51 //判断按下任意按键时
52 if (Input.anyKeyDown)
53 {
54 //加载下一个场景
55 op.allowSceneActivation = true;
56 }
57
58 }
59
60 //退出,返回空
61 yield return null;
62
63 }
64 }
65 }