Unity在协程（Coroutines）内开启线程（Threading ）

当你计算一些高开销的或长期的操作，线程仍然可以是首选。 这方面的例子有：

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usingSystem.Collectons;usingUnityEngine;
 
class TestScript : MonoBehaviour
{class Config
	{publicstring Version;publicstring AssetsUrl;}
 
	void Start(){
		StartCoroutine(LoadConfig());}
 
	IEnumerator LoadConfig(){// 第一帧加载配置string json = File.ReadAllText("/path/to/config.json");
 
		// 等待直到第二帧yieldreturnnull;
 
		// 在第二帧解析配置
		Config config = JsonUtility.FromJson<Config>(json);
 
		// 等待直到第三帧yieldreturnnull;
 
		// 在第三帧使用配置
		Debug.Log("Version: "+ config.Version+"\nAssets URL: "+ config.AssetsUrl);}}

usingSystem.Collections;usingSystem.IO;usingSystem.Text;usingUnityEngine;
 
publicclass TestScript : MonoBehaviour
{class Config
	{publicstring Version;publicstring AssetsUrl;}
 
	void Start(){
		StartCoroutine(LoadConfig());}
 
	IEnumerator LoadConfig(){// 每帧加载1  Kb 大小，直到加载完成。
		MemoryStream jsonStream =new MemoryStream();byte[] buffer =newbyte[1024];using(FileStream fileStream = File.OpenRead("/path/to/config.json")){while(true){int numBytesRead = fileStream.Read(buffer, 0, buffer.Length);if(numBytesRead ==0){break;}
				jsonStream.Write(buffer, 0, numBytesRead);yieldreturnnull;}}
 
		// 等到下一帧解析字符串yieldreturnnull;string json = Encoding.UTF8.GetString(jsonStream.ToArray());
 
		// 等到下一帧  转成 Config 对象yieldreturnnull;
		Config config = JsonUtility.FromJson<Config>(json);
 
		// 等到下一帧  使用配置yieldreturnnull;
		Debug.Log("Version: "+ config.Version+"\nAssets URL: "+ config.AssetsUrl);}}

usingSystem.Collections;usingSystem.IO;usingSystem.Threading;usingUnityEngine;
 
publicclass TestScript : MonoBehaviour
{class Config
	{publicstring Version;publicstring AssetsUrl;}
 
	void Start(){
		StartCoroutine(LoadConfig());}
 
	IEnumerator LoadConfig(){// 第一帧开启线程
		Config config =null;bool done =false;new Thread(()=>{// 加载和解析Json， 跟Unity的帧无关。string json = File.ReadAllText("/path/to/config.json");
			config = JsonUtility.FromJson<Config>(json);
			done =true;}).Start();
 
		// 每帧都检查线程是否完成while(!done){yieldreturnnull;}
 
		// 线程完成 后的第一帧  使用配置
		Debug.Log("Version: "+ config.Version+"\nAssets URL: "+ config.AssetsUrl);}}

usingSystem.Collections;usingSystem.IO;usingUnityEngine;
 
publicclass TestScript : MonoBehaviour
{class Config
	{publicstring Version;publicstring AssetsUrl;}
 
	void Start(){
		StartCoroutine(LoadConfig());}
 
	IEnumerator LoadConfig(){
		Config config =null;yieldreturnnew WaitForThreadedTask(()=>{string json = File.ReadAllText("/path/to/config.json");
			config = JsonUtility.FromJson<Config>(json);});
		Debug.Log("Version: "+ config.Version+"\nAssets URL: "+ config.AssetsUrl);}}